Acrylamide was selected as a monomer to generate polyacrylamide network in 3D printing mortars via in-situ polymerization, and the effect of in-situ polymerization on the mechanical properties of 3D printing mortars was investigated. The influence mechanism was analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy, mercury intrusion porosimetry, and X-ray computed tomography. The results show that the in-situ polymerization of AM can enhance the fluidity of 3D printing mortars, reduce the generation of macroscopic defects, and improve the printing quality. After AM monomers are polymerized, a “rigid-flexible” composite network structure is formed, in which the organic network and the cement hydration products are intertwined. This structure greatly enhances the flexural strength and relative bonding strength of the 3D printed specimen. The 28 d flexural strength and the relative interfacial bonding strength can be increased by 52.4% and 78.1%, respectively.

The isothermal exposure tests for 270 d at different air pressure (i.e., 101 kPa, 60 kPa, and 20 kPa) and relative humidities (i.e., 43%, and 98%) were carried out for hardened cement pastes. Effect of air pressure on the moisture content and the chemically bound water content in hardened cement pastes was investigated. The moisture transfer characteristics at different low air pressures were analyzed by a proposed numerical model. The results show that a low air pressure promotes the water loss within the hardened cement pastes during the isothermal drying process, resulting in a slight decrease in the chemically bound water content. Under the isothermal wetting condition, the mass of hardened cement paste grows at a logarithmic rule due to the moisture diffusion into the pore network, the decrease of air pressure significantly improve the early-stage mass growth rate and the final mass gain. The numerical approach on the moisture transfer indicates that the increases of water vapor diffusion coefficient, mass transfer coefficient, and intrinsic permeability of hardened cement paste are the main causes of moisture transfer behavior during the isothermal drying and wetting processes.

Pouring fresh mortar on the substrate is a common repair and reinforcement measure. The water exchange occurs when the moisture degree of the new mortar and the old mortar is different, thus changing the mixing ratio of the repair material, and affecting the hydration process, microscopic characteristics, permeability and bonding performance between the repair material and the old mortar. In this paper, the water exchange process among fresh ordinary mortar, strain hardening cementitious composites (SHCC), and old mortar with different moisture degrees (i.e., 0%, 30%, 70% and 100%) was investigated by a weighing method. The influences of the type of fresh repair mortar and the initial moisture degree of the old mortar on the rate of water exchange and the final water-binder ratio of the repair mortar were analyzed. The effect of the water exchange on the bond strength between the repair mortar and the old mortar, the microstructure of the repair mortar and the water absorption properties was investigated via the mechanical tests, low field nuclear magnetic resonance and weighing method. The results show that there is a good linear relationship between the mass of water absorbed per unit area of the unsaturated matrix and the square root of time in the early stage of water exchange. The shear strength between SHCC or ordinary mortar and substrate is maximum at 0% moisture degree of the substrate. The shear strength between SHCC as a repair material and the substrate is greater than that of ordinary mortar. The porosity, micropores volume fraction and capillary absorption coefficient of ordinary mortar gradually increase and the volume fraction of mesopores and large voids gradually decrease as the moisture of old mortar increases. The volume fraction of SHCC porosity, mesopores and large voids gradually decrease as the moisture degree of old mortar increases, and the volume fraction of micropores and capillary absorption coefficient change slightly.

The performance of polycarboxylate (PCE) superplasticizer in concrete with machine-made sand greatly depends on the adsorption behavior on stone powder, which is concerned with the lithology and specific surface area. The workability can be improved via enhancing the adsorption of PCE on stone powder. In this regard, the rheological behavior of cement paste and cement/microcline paste with conventional PCE superplasticizer and phosphate-containing PCE superplasticizer was tested. The incorporation of phosphate group can enhance the adsorption of PCE molecule on the surface of microcline, thus improving the packing density of cement/microcline mixture. The average particle separation distance increases. Therefore, the dispersing performance of PCE superplasticizer in the mixture is obviously improved. The apparent viscosity of paste is reduced. The performance of phosphate-containing superplasticizer is even better when incorporating high content of microcline.

The force transferring between fiber and matrix is closely related to the interfacial bonding properties of fiber-resin during the loading process of fiber reinforced polymer (FRP) bars. However, its bonding properties are degraded by the diffusion of chloride ions in the pore solution of seawater sea-sand concrete into the interfacial zone of fiber-resin. In this paper, a micro-debonding device was independently designed and combined with the digital image correlation (DIC) technique to track the degradation process of basalt/glass fiber-resin bonding property during the corrosion in chloride solution for 28 d. The results show that the bonding property between glass fiber and resin is better than that of basalt fiber. The interface bonding force of basalt/glass fibers is decreased by 73.9% and 71.8% after the corrosion of 28 d in NaCl solution. Matrix cracking and fiber pulling out are the main failure modes during the pull-out process. The formation of the hydrogen bond is dominated due to the bonding mode between resin and fiber matrix. However, the number of hydrogen bond atoms is reduced by the interaction between the chloride ions and the atoms at the matrix interface, thus accelerating the debonding between the fiber and resin.

Calcium silicate hydrate (C?傆bS?傆bH) gel is a gene of cement-based cementitious materials, and its structural changes are crucial to the development of concrete macroscopic properties. To clarify the modification mechanism of cellulose nanocrystals (CNCs) in cement, C?傆bS?傆bH gels were prepared by a co-precipitation method, and the morphological and nucleation effects of CNCs on the microstructure of C?傆bS?傆bH gels were investigated by X-ray diffraction (XRD), transmission electron microscopy, nanoindentation, and nuclear magnetic resonance. The results show that the hydroxyl groups (-OH) on the surface of CNCs can complex Ca2+ ions, and then react with SiO42- ions in solution to form C?傆bS?傆bH gels that wraps around the CNCs. The CNCs can provide additional nucleation sites for the precipitation and growth of C?傆bS?傆bH gels, promote the reduction of the polymerization degree and the shortening of the chain length of the C?傆bS?傆bH gel, and increase the content of high-density C?傆bS?傆bH gel.

Cement-supplementary cementitious materials (SCM)/graphene oxide (GO) combine a lower carbon footprint with ductility enhancement. Aluminum phase released during the SCM hydration occurs in various forms in C-A-S-H/GO. The effects of bridging Al(Q2b) and interlayer Alinter on the mechanical properties of C-A-S-H/GO were investigated based on the reactive molecular dynamics. It is indicated that Alinter with less than Al(Q2b) redistributes the stress during the fracture of the system, activating load sharing between the layers, and thus triggering a “recovery-reinforcement” mechanism to multiply the mechanical properties. The “recovery-reinforcement” can be explained via analyzing Al's contribution to the reorganization of the interfacial bonding network and the chemical bonding evolution during fracture. The results show that the targeted regulation of Al chemical environment in cement-SCM/GO preparation is a key issue to break the ductility bottleneck.

Cement-based materials are highly hydrophilic, and aggressive substances in service environment often penetrate into the cement-based materials through the transmission of water, resulting in corrosion of steel bars, carbonization of concrete, and other hazards. In this paper, two types of microbe cells were applied to improve the hydrophobic properties of the mortar specimens. The results show that the contact angle of the mortar specimens increases to 122.7° and 112.1° after the addition of Starmerella bombicola CCRC22302 and Bacillus sphaericus LMG22257, respectively. The diffusion rate and absorption rate of water on the fracture surface are obviously slowed down. The capillary water absorption is decreased by 39% in the groups added with 2.5% (in mass) Starmerella bombicola by mass of cement. The bacterial cell improves the hydrophobicity through the combined action of the rough structure and its hydrophobicity. However, it is indicated that the flexural and compressive strengths of the mortar specimens are significantly decreased, thus becoming a challenge for the practical application.

The low atmosphere-pressure in plateau regions will affect the bubble stability, thus affecting the air-void structure and frost resistance of air-entrained concrete. The effect of atmosphere pressure on the pore structure of freshly mixed air-entraining mortar was investigated via constructing a self-built low atmosphere pressure mixing device. The results show that the decrease of atmosphere pressure can decrease the initial air content of air-entrained mortar, increase the bubble spacing coefficient as well as air content loss through time, and deteriorate the pore structure. The mechanism of low atmosphere pressure effect on the pore structure of air-entrained mortar is mainly since the reduced atmosphere pressure accelerates the Ostwald ripening process of the bubble system, which makes the small bubbles smaller until they disappear and the large bubbles larger until they break, and the average pore size of the bubble system increases, thus accelerating the destabilization rate of the bubble system. These findings have important implications for understanding the mechanism of bubble destabilization under a low atmosphere pressure and developing the corresponding bubble stabilization techniques.

The chloride resistance of blended cementitious materials can be improved by incorporating a high volume of supplementary cementitious materials (SCMs), thereby improving the durability and service life of concrete structures. However, their mechanical properties decrease significantly, especially at early age. To improve the early-age mechanical properties and chloride resistance, the type and addition of cementitious materials in the fine, mid-size, and coarse fractions were optimized based on particle close-packing and pore fillability during hydration. The blended cement pastes with greater chloride binding capacity and pore tortuosity are obtained due to the pore refinement of fine particles and efficient hydration of both clinker and SCMs. In addition, a blended cementitious material with 3-day compressive strength of 27.3 MPa and 28-day chloride diffusion coefficient of 0.36×10-12 m2/s was prepared using only 59% clinker with a size range of 4-55 μm. The results provide a deeper insight in the microstructural optimization and durability improvement of cement-based materials.

To reveal the difference of corrosion mechanism of steel bars in concrete under Cl?傆b and SO42?傆b action, and provide the theoretical basis for the control of concrete corrosion resistance under chloride and sulphate attack, the electrochemical behavior of reinforcement subjected to Cl?傆b and SO42?傆b in concrete pore solutions was investigated, and the competitive adsorptions of corrosive ions (Cl?傆b, SO42?傆b) and passive ions (CaOH+, OH?傆b) on the Fe (100) surface were analyzed by the density functional theory based on the first-principles. The results show that the corrosion potential and polarization resistance of steel reinforcement in concrete pore solution with SO42?傆b both are lower than those in concrete pore solution with Cl?傆b, indicating that the steel reinforcement corrosion occurs more easily in concrete pore solution with SO42?傆b. The inhibition effect of SO42?傆b on the reaction of OH?傆b and iron surface is slightly stronger than that of Cl?傆b. Moreover, SO42?傆b can promote the elongation of Ca-OH bond, and block the interaction of the OH group in CaOH+ and surface Fe atom, showing that the inhibition effect of SO42?傆b on the reaction of CaOH+ and iron is stronger than that of Cl?傆b. The results reveal the corrosion mechanism of steel reinforcement under the attack of Cl?傆b and SO42?傆b in concrete.

To further understand the influence of climate environment on the microstructure of concrete materials in northwestern China, the microstructure characteristics of concrete under different temperature and humidity curing conditions were investigated by a nano-indentation technology. The results show that the lack of curing temperature and humidity leads to the increase of capillary pores and low-density calcium silicate hydrate (C-S-H) gel content in cement mortar. The indentation modulus and hardness of concrete interfacial transition zone (ITZ) under different curing conditions were statistically analyzed. It is indicated that the average thickness of concrete ITZ is increased by 5 μm and 10 μm when the curing conditions are 10 ℃-70% relative humidity (RH) and 3 ℃-50% RH, respectively, compared with that the curing condition is 20 ℃-95% RH.

The orientation of steel fibers has an effect on the mechanical properties of steel fiber reinforced concrete (SFRC). In elements or structures such as slabs, floors and pavements, vertical steel fibers are useless but harmful to the structures. In this case, the optimal distribution of steel fibers is two-dimensional (no vertical, but random in the plane) dispersion. In this paper, the steel fibers were aligned using a rotating uniform magnetic field, and the 2D aligned steel fiber reinforced concrete (2D-SFRC) was prepared to enhance the mechanical properties of SFRC and the efficiency of reinforcement of steel fibers. The splitting tensile performance, flexural behavior of prism and circular plate specimens of 2D-SFRC were tested and compared with those of the specimens with randomly distributed steel fiber reinforced concrete (RD-SFRC). Besides, the mechanism of reinforcement of 2D-SFRC was investigated from the perspective of fiber distribution characteristics and acoustic emission signals. The results show that the mechanical properties of 2D-SFRC are significantly improved, compared with RD-SFRC. The fiber distribution statistics and acoustic emission analysis indicate that the increased amount of steel fibers in the fracture surface and enhanced fiber orientation effective factor are the main reasons for the improved mechanical properties of 2D-SFRC. The 2D-SFRC has the characteristics of high performance and low cost, which is of great significance for improving the engineering quality and reduce the materials consumption.

It is essential to ensure the concrete construction quality of high arch dam via comprehensively collecting multi-source heterogeneous information in the concrete vibration construction and timely and objectively analyzing vibration quality. For incomplete information perception and undesirable data quality in current space-ground perception technology during concrete vibration construction, an intelligent sensing scheme with space-air-ground integration for concrete vibrating construction information was established to realize the stereoscopic perception of multi-source, multi-modal and multi-scale construction information in the concrete pouring process. On this basis, the Kalman-based denoising method for positioning data of Global Navigation Satellite System (GNSS), improved Faster R-CNN-based video analysis method and DebrGAN-v2-based surface image deblurring method were proposed, respectively, for numerical type, video stream, and image information. Taking Yangfanggou hydropower station as an example, the intelligent analysis and monitoring of concrete vibration quality can be realized by the proposed space-air-ground integration sensing method.

Anti-thermal cracking is one of key issues for construction quality control of mass concrete. This paper introduced an intelligent monitoring technology of anti-thermal cracking for mass concrete. The temperature cooling process was optimized by thermal stress tests conducted on the temperature-stress testing machine. The real-time evaluation and prediction models targeting on adequate concrete temperature were established based on the real-time collected information at different stages of mixing, casting, cooling and insulation. The models can achieve precise index monitoring and dynamic warning of concrete temperature, and control concrete parameters such as temperature automatically and intelligently. The technology shows a good application effect on the mass concrete temperature control optimization and real-time monitoring, and it can be popularized in the similar projects.

Carbonatable binder is a developed type of cementitious material that reacts with CO2 and is capable of binding other ingredients to form a monolith with mechanical strength. Manufacturing carbonatable binder-based carbonated products is an important route for the utilization of CO2 as a research hotspot. This review elucidated the definition of carbonatable binder and its mineral composition, analyzed the carbonation reaction mechanism, microstructure evolution and the mechanical performance along with the multi-species transport mechanism, and introduced the three main categories of carbonatable binders and their applications. In addition, the future research areas and the application prospects were also given.

The ultra-high performance concrete materials (UHPC) are developed rapidly and are widely used in bridge engineering and other fields. The corresponding advantages involve the reducing dead weight, simplifying reinforcement details, shortening construction period, and improving durability. The comprehensive economic and technical benefits are achieved. This review represented recent development on the UHPC building structures. The characteristics of UHPC structure and the current engineering application were summarized, and the basic design principles and methods were analyzed. Recent studies on the UHPC building structural components and joints were introduced, including lightweight thermal insulation sandwich roof panels, sandwich floor/wall panel-based prefabricated structures, two-way waffle slabs, post-poured beam-column joint in precast reinforced concrete frame, prefabricated frames based on the UHPC connections, etc.. Some methods and benefits of UHPC application in building structures were concluded. In addition, the future research aspects of UHPC building structure were also given to promote the application of UHPC in building structure and improve its comprehensive performance and quality.

As a key mineral of low carbon and high corrosion resistant cement clinker, ferrite phase plays an important role in improving the burnability of cement raw meal, the formation and hydration of clinker, and the ability of cement to corrosion resistance. This review represented recent work on the physicochemical properties of ferrite phase and the influence of ferrite phase on Portland cement and calcium sulphoaluminate cement. The effect of ferrite phase on the mineral formation, hydration rate and hydration product, mechanics and corrosion resistance of two cement clinker was emphatically discussed. In addition, some issues that need to be solved urgently and the application prospect of low-carbon high corrosion resistant cement were also represented.

Based on the local resonance theory, a structural model of a new type of vibration reduction material-metaconcrete was proposed, and the band gap number of the metaconcrete cell was increased by increasing the type of resonant aggregates in the matrix. Firstly, the energy band structure, eigenmodes and attenuation characteristics of single, double, and three resonant aggregate metaconcrete cell were calculated by the finite element method. Secondly, the generation mechanism and the influence law of band gap were studied. Finally, the band gap estimation formula was derived base on the effective mass theory. The results showed that the metaconcrete cell exhibited band gap properties, and with the increase of the types of resonant aggregates in the matrix, the band gap number increases but each band gap width decreases. Moreover, there is a one-to-one correspondence between the types of resonant aggregates and the band gaps. The starting frequency of the band gap was determined by the translational vibration of the corresponding primitive cell scatterers, while the cut-off frequency was determined by the reverse vibration between the corresponding primary cell scatterers and other units. By properly configuring the material and geometric parameters of the primitive cell, the position and width of the corresponding band gap can be optimized. The band gap calculations from the effective mass theory agreed well with the finite element method, and it can be used to obtain the band gap of the multiple resonant aggregates metaconcrete cell.

At present, the compatibility of cement and flash setting admixture often appears in the application of accelerator, and the evaluation of the compatibility of cement and flash setting admixture and its influencing factors becomes a necessity. In this work, the macro-performance and early hydration heat of different cement-accelerator systems were analyzed. The macro-performance and micro-indicators were organically combined to calculate and compare the compatibility of different cement-accelerator systems by a comprehensive method for quantitative evaluation of compatibility, i.e., the multi-factor comprehensive index (f(a) value) evaluation method. The results show that the alkaline flash setting admixture has an optimum compatibility for the Reference cement with the maximum transition phase content, and the maximum f(a) value is 74. Alkali-free flash setting admixture has an optimum compatibility for the Jidong cement with the maximum C3A and C3S contents, and the f(a) values are greater than 80.

To provide a theoretical reference for reducing the shrinkage and cracking of concrete and promoting the development and application of the shrinkage-reducing polycarboxylate superplasticizer, a shrinkage-reducing polycarboxylate superplasticizer (SR-PCE) with dispersion and shrinkage reducing properties was synthesized via free radical polymerization with isopentenyl polyoxyethylene ether (IPEG), acrylic acid (AA), butyl acrylate (BA) and other monomers. The molecular structure of SR-PCE was characterized by gel permeation chromatography and Fourier transform infrared spectroscopy, and its shrinkage reduction mechanism was analyzed. The results show that the molecular structure of SR-PCE is a designed structure. The optimum shrinkage reducing performance of the synthesized PCE can be obtained at a molar ratio of IPEG:AA:BA of 1:5:4. The mechanism of SR-PCE with the optimum shrinkage reducing performance mainly is since SR-PCE can further reduce the surface tension of the solution rather than ordinary PCE, SR-PCE can reduce the evaporation rate of the pore solution of cement paste and improve the pore water retention.

The failure mechanism and damage form of unsaturated cement-based materials are rather different under freeze-thaw environment. In this paper, the water absorption characteristics of unsaturated cement paste at different freezing temperatures were investigated in four freeze-thaw cycle regimes, i.e. ?傆b10 ℃?傆b4 ℃, ?傆b20 ℃?傆b4 ℃, ?傆b30 ℃?傆b4 ℃ and ?傆b40 ℃?傆b4 ℃. The single surface immersed unsaturated cement paste was subjected to 23 freeze-thaw cycles at ?傆b40 ℃. The microstructures of the samples at different heights from the water surface were analyzed. The results show that the water absorption of unsaturated cement paste can increase with the increase of the number of freeze-thaw cycles. The lower the freezing temperature is, the greater the water absorption will be, indicating the greater cold absorption. After the same number of freeze-thaw cycles, the closer the site to the water surface is, the larger the porosity and the greater the volume fraction of microcracks will be. The smaller the content of small pores is, the larger the content of large pores will be, that is, the closer the site to the water surface is, the more serious the freeze-thaw damage will be.

To investigate the binding capacity and mechanism of AFm and C3AH6 with Cl- ions, high purity AFm and C3AH6 were synthesized with C3A. The mineralogy and morphology of the products after reaction of AFm or C3AH6 with premixed and ingress Cl- ions, and the corresponding binding capacities were characterized. The results show that C3AH6 has a higher Cl- ions binding ability (i.e., up to 75%) with premixed Cl- ions than AFm (i.e., 17%), especially at a relatively low content of premixed Cl- ions. A reaction between Cl- ions and C3AH6 is faster than that between Cl- ions and AFm. The binding product generated by C3AH6 is Friedel’s salt, while those by AFm are Hc, Kuzel’s salt, Friedel’s salt and AFt, which depends on Cl- ions concentration and its introduced manners, via premixed or ingress Cl- ions.

It is important for the accurate identification of cracks of engineered cementitious composites (ECC) to investigate the mechanical properties and durability of ECC. To solve the problems like the large number and density of ECC cracks and heavy noise interference, this study adopted the U-NET model suitable for biological image recognition, and optimized part of ResNet network layer structure based on the deep learning method. This study also used the neural network model and combined with the created data suitable for the ECC, and performed the semantic segmentation to obtain the crack pixels. For crack parameter extraction, this study used the bone extraction method and combined with digital image processing process, and used the CLAHE filter and half-peak full-width concept to obtain the crack width. The crack identification and parameter extraction method was applied to detect the cracks on hybrid-fiber ECC dog bone specimen and ECC link slab. The results show that the error range between the ECC crack identification and intelligent detection established by the deep learning method and the actual manual measurement is within 0.6 mm. The results of this study can provide an accurate, effective and high-throughput analysis for the ECC crack inspection and feature quantitative identification.

The massive waste carbon fibers in modern industry need to be recycled and reused. In this work, the effect of recycled carbon fibers (RCF) on the fluidity, mechanical property and electrical conductivity of high-strength cement-based material (HSCBM) was investigated using waste carbon fibers with the HSCBM. The results indicate that the incorporation of RCF reduces the fluidity of HSCBM, while the fluidity can be increased by 7.74% if RCF is modified by NaOH solution and HNO3 solution. Incorporating unmodified and modified RCF at different water-to-binder ratios can reduce the compressive strength of HSCBM. However, the flexural strength of HSCBM after modification of RCF with NaOH solution and HNO3 solution is improved, and the flexural strength of HSCBM can be increased by 30.61% and 24.46%, respectively. The RCF/HSCBM has no conductivity when the water-binder ratio is rather low (i.e., 0.20). When the water-binder ratio increases to 0.25, adding RCF can improve the conductivity of HSCBM, but its strength greatly reduces. After RCF is treated with NaOH solution and HNO3 solution, the conductivity of HSCBM is further improved. The 7 d and 28 d resistivity can be decreased by 81.41%?傆b82.23% and 94.88%?傆b96.15%, respectively, when the RCF amount reaches a percolation threshold (i.e., 0.6%). The research results can provide a new idea for the functional properties of HSCBM and RCF recycling.

Wet-dry cycles of fly ash (FA) and cellulose fiber double-doped concrete with sulphate in Nazi Gorge water conservancy pivot project were investigated. The durability value (D), a durability index that can comprehensively reflect the mass, compressive strength and splitting strength of concrete were established based on an entropy weight method. The effects of sulphate mass fraction and fly ash admixture on the D were analyzed. A grey model-back propagation (GM-BP) neural network was constructed to reveal the time-varying law of the D. The results show that the D can reflect the effects of sodium sulphate mass fraction and fly ash admixture on the durability of concrete. At 180 day, the D loss is proportional to sodium sulphate solution mass fraction within 10% (mass fraction). The GM-BP neural network can predict the time-varying law of the D under salt intrusion-wet and dry cycles more accurately than the GM.

Lightweight and high ductility cementitious composite was developed as a fire-resistive coating (FR-ECC) with domestic raw materials. The feasibility of FR-ECC as fire-resistive coating was demonstrated. The mechanical properties of FR-ECC with different proportions were investigated via axial tensile test and compressive test. The cooperative deformation performance of FR-ECC and steel member was determined via four-point bending beam test. The results indicate that FR-ECC with three proportions has the characteristics of multi-cracking and strain-hardening with an average tensile strength of 1.30 MPa and an average strain capacity of 1.93%. The results of compressive test show a high compressive deformation capacity of FR-ECC with an average strength of 3.99 MPa. The tensile and compressive properties can be enhanced by increasing the fiber content. According to the results of the four-point bending beam test, FR-ECC can adapt to a larger bending deformation as the coating thickness decreases. When the coating thickness is no more than 10 mm, FR-ECC can produce some fine cracks with the deformation of the steel beam instead of delaminating or falling off. FR-ECC has a capability of cooperative deformation with steel member under a complex stress.

Cement-based wave absorbing materials can effectively alleviate the impact of electromagnetic radiation in daily life. However, the conventional absorbent cannot be widely used in engineering due to its narrow effective band, low absorption efficiency and heavy mass. Nano-absorbers have the unique characteristics of quantum size effect, macroscopic quantum tunneling effect and interface effect. Therefore, the use of nano-absorbers cement-based modified wave absorbing materials can provide an effective approach for electromagnetic radiation protection. This review summarized recent studies on carbon nanotube cement-based wave absorbing materials, graphene cement-based wave absorbing materials and magnetic nano-metal cement based wave absorbing materials. In addition, the future research direction in this field was also discussed.