[1] [1] HE Z M, SHEN A Q, GUO Y C, et al. Cement-based materials modified with superabsorbent polymers: a review［J］. Construction and Building Materials, 2019, 225: 569-590.

[2] [2] MIGNON A, SNOECK D, DUBRUEL P, et al. Crack mitigation in concrete: superabsorbent polymers as key to success?［J］. Materials, 2017, 10(3): 237.

[3] [3] JUSTS J, WYRZYKOWSKI M, BAJARE D, et al. Internal curing by superabsorbent polymers in ultra-high performance concrete［J］. Cement and Concrete Research, 2015, 76: 82-90.

[4] [4] LI W G, LUO Z Y, LONG C, et al. Effects of nanoparticle on the dynamic behaviors of recycled aggregate concrete under impact loading［J］. Materials & Design, 2016, 112: 58-66.

[5] [5] HONG G, CHOI S. Modeling rapid self-sealing of cracks in cementitious materials using superabsorbent polymers［J］. Construction and Building Materials, 2018, 164: 570-578.

[6] [6] YANG J, WANG F Z, HE X Y, et al. Pore structure of affected zone around saturated and large superabsorbent polymers in cement paste［J］. Cement and Concrete Composites, 2019, 97: 54-67.

[7] [7] LIU J H, KHAYAT K H, SHI C J. Effect of superabsorbent polymer characteristics on rheology of ultra-high performance concrete［J］. Cement and Concrete Composites, 2020, 112: 103636.

[8] [8] MECHTCHERINE V, SECRIERU E, SCHRFL C. Effect of superabsorbent polymers (SAPs) on rheological properties of fresh cement-based mortars-development of yield stress and plastic viscosity over time［J］. Cement and Concrete Research, 2015, 67: 52-65.

[9] [9] SNOECK D, VELASCO L F, MIGNON A, et al. The effects of superabsorbent polymers on the microstructure of cementitious materials studied by means of sorption experiments［J］. Cement and Concrete Research, 2015, 77: 26-35.

[10] [10] SNOECK D, SCHAUBROECK D, DUBRUEL P, et al. Effect of high amounts of superabsorbent polymers and additional water on the workability, microstructure and strength of mortars with a water-to-cement ratio of 0.50［J］. Construction and Building Materials, 2014, 72: 148-157.

[11] [11] OLAWUYI B J, BOSHOFF W P. Influence of SAP content and curing age on air void distribution of high performance concrete using 3D volume analysis［J］. Construction and Building Materials, 2017, 135: 580-589.

[12] [12] GUO Y L, SUN C Y, KANG Y Q, et al. Numerical simulation analysis of rock mass blasting under high geo-stress［J］. Railway Engineering, 2020, 60(12): 74-77 (in Chinese).

[13] [13] SNOECK D, DE SCHRYVER T, DE BELIE N. Enhanced impact energy absorption in self-healing strain-hardening cementitious materials with superabsorbent polymers［J］. Construction and Building Materials, 2018, 191: 13-22.

[14] [14] DENG Z, CHENG H, WANG Z, et al. Compressive behavior of the cellular concrete utilizing millimeter-size spherical saturated SAP under high strain-rate loading［J］. Construction and Building Materials, 2016, 119: 96-106.

[15] [15] ZHOU J K, JIN S, SUN L. Experimental investigation on the influence of multiscale pores on the static and dynamic splitting tensile strength of cementitious materials based on the virtual pore method［J］. Construction and Building Materials, 2021, 266: 120956.

[16] [16] LEE H X D, WONG H S, BUENFELD N R. Self-sealing of cracks in concrete using superabsorbent polymers［J］. Cement and Concrete Research, 2016, 79: 194-208.

[17] [17] KANG S H, HONG S G, MOON J. Absorption kinetics of superabsorbent polymers (SAP) in various cement-based solutions［J］. Cement and Concrete Research, 2017, 97: 73-83.

[18] [18] ESTEVES L P. Superabsorbent polymers: on their interaction with water and pore fluid［J］. Cement and Concrete Composites, 2011, 33(7): 717-724.

[19] [19] DENG H W, LIAO G Y. Assessment of influence of self-healing behavior on water permeability and mechanical performance of ECC incorporating superabsorbent polymer (SAP) particles［J］. Construction and Building Materials, 2018, 170: 455-465.

[20] [20] SCHRFL C, MECHTCHERINE V, GORGES M. Relation between the molecular structure and the efficiency of superabsorbent polymers (SAP) as concrete admixture to mitigate autogenous shrinkage［J］. Cement and Concrete Research, 2012, 42(6): 865-873.

[21] [21] PANESAR D K, FRANCIS J. Influence of limestone and slag on the pore structure of cement paste based on mercury intrusion porosimetry and water vapour sorption measurements［J］. Construction and Building Materials, 2014, 52: 52-58.

[22] [22] XIAO J Z, LI L, SHEN L M, et al. Compressive behaviour of recycled aggregate concrete under impact loading［J］. Cement and Concrete Research, 2015, 71: 46-55.

[23] [23] JENSEN O M, HANSEN P F. Water-entrained cement-based materials［J］. Cement and Concrete Research, 2001, 31(4): 647-654.

[24] [24] ODLER I, RLER M. Investigations on the relationship between porosity, structure and strength of hydrated Portland cement pastes. II. Effect of pore structure and of degree of hydration［J］. Cement and Concrete Research, 1985, 15(3): 401-410.

[25] [25] MILED K, SAB K, LE ROY R. Particle size effect on EPS lightweight concrete compressive strength: experimental investigation and modelling［J］. Mechanics of Materials, 2007, 39(3): 222-240.

[26] [26] FENG S, ZHOU Y, WANG Y, et al. Experimental research on the dynamic mechanical properties and damage characteristics of lightweight foamed concrete under impact loading［J］. International Journal of Impact Engineering, 2020, 140: 103558.