[2] FARHAN N A, SHEIKH M N, HADI M N S. Investigation of engineering properties of normal and high strength fly ash based geopolymer and alkali-activated slag concrete compared to ordinary Portland cement concrete［J］. Construction and Building Materials, 2019, 196: 26-42.

[3] SARKER P K, HAQUE R, RAMGOLAM K V. Fracture behaviour of heat cured fly ash based geopolymer concrete［J］. Materials & Design, 2013, 44: 580-586.

[4] OHNO M, LI V C. A feasibility study of strain hardening fiber reinforced fly ash-based geopolymer composites［J］. Construction and Building Materials, 2014, 57: 163-168.

[7] BALAPOUR M, JOSHAGHANI A, ALTHOEY F. Nano-SiO2 contribution to mechanical, durability, fresh and microstructural characteristics of concrete: a review［J］. Construction and Building Materials, 2018, 181: 27-41.

[8] RONG Z D, SUN W, XIAO H J, et al. Effects of nano-SiO2 particles on the mechanical and microstructural properties of ultra-high performance cementitious composites［J］. Cement and Concrete Composites, 2015, 56: 25-31.

[9] YU J, ZHANG M, LI G Y, et al. Using nano-silica to improve mechanical and fracture properties of fiber-reinforced high-volume fly ash cement mortar［J］. Construction and Building Materials, 2020, 239: 117853.

[13] DING C, GUO L P, CHEN B, et al. Micromechanics theory guidelines and method exploration for surface treatment of PVA fibers used in high-ductility cementitious composites［J］. Construction and Building Materials, 2019, 196: 154-165.

[16] LU Z Y, YIN R, YAO J, et al. Surface modification of polyethylene fiber by ozonation and its influence on the mechanical properties of strain-hardening cementitious composites［J］. Composites Part B: Engineering, 2019, 177: 107446.