Effects of Fine Iron Ore Tailings Sand and Curing Conditions on Mechanical Properties and Microstructure of High-Strength Alkali-Activated Mortar

WANG Min; YAN Shuang; LI Yawei

[3] KAMSEU E, ALZARI V, NUVOLI D, et al. Dependence of the geopolymerization process and end-products to the nature of solid precursors: challenge of the sustainability［J］. Journal of Cleaner Production, 2021, 278: 123587.

[4] CHEN K Y, WU D Z, XIA L L, et al. Geopolymer concrete durability subjected to aggressive environments-a review of influence factors and comparison with ordinary Portland cement［J］. Construction and Building Materials, 2021, 279: 122496.

[5] GLASBY T, DAY J, GENRICH R, et al. EFC geopolymer concrete aircraft pavements at Brisbane West Wellcamp Airport ［C］. Concrete Institute of Australia Conference, 2015, 1-9.

[7] SHETTIMA A U, HUSSIN M W, AHMAD Y, et al. Evaluation of iron ore tailings as replacement for fine aggregate in concrete［J］. Construction and Building Materials, 2016, 120: 72-79.

[8] KURANCHIE F A, SHUKLA S K, HABIBI D. Utilisation of iron ore mine tailings for the production of geopolymer bricks［J］. International Journal of Mining, Reclamation and Environment, 2016, 30(2): 92-114.

[9] KUMAR R, DAS P, BEULAH M, et al. Utilization of iron ore tailings for the production of fly ash—GGBS-based geopolymer bricks［J］. Journal of Advanced Manufacturing Systems, 2017, 16(3): 275-290.

[13] HASNAOUI A, GHORBEL E, WARDEH G. Effect of curing conditions on the performance of geopolymer concrete based on granulated blast furnace slag and metakaolin［J］. Journal of Materials in Civil Engineering, 2021, 33(3): 04020501.

[14] YOUSEFI ODERJI S, CHEN B, JAFFAR S T A. Effects of relative humidity on the properties of fly ash-based geopolymers［J］. Construction and Building Materials, 2017, 153: 268-273.

[15] KHAN M Z N, SHAIKH F U A, HAO Y F, et al. Effects of curing conditions and sand-to-binder ratios on compressive strength development of fly ash geopolymer［J］. Journal of Materials in Civil Engineering, 2018, 30(2): 04017267.

[18] MA C, LONG G C, SHI Y, et al. Preparation of cleaner one-part geopolymer by investigating different types of commercial sodium metasilicate in China［J］. Journal of Cleaner Production, 2018, 201: 636-647.

[19] ASTM International. Standard test method for compressive strength of hydraulic cement mortars (using 2-in. or ［50-mm］ cube specimens): ASTM-C109［S］. America: ASTM International, 2016.

[21] LONGHI M A, ZHANG Z H, RODRGUEZ E D, et al. Efflorescence of alkali-activated cements (geopolymers) and the impacts on material structures: a critical analysis［J］. Frontiers in Materials, 2019, 6: 89.

[22] CHOI S C, LEE W K. Effect of Fe2O3 on the physical property of geopolymer paste［J］. Advanced Materials Research, 2012, 586: 126-129.

[25] LI N, SHI C J, WANG Q, et al. Composition design and performance of alkali-activated cements［J］. Materials and Structures, 2017, 50(3): 178.

[27] GARCIA-LODEIRO I, PALOMO A, FERNNDEZ-JIMNEZ A, et al. Compatibility studies between N-A-S-H and C-A-S-H gels. Study in the ternary diagram Na2O-CaO-Al2O3-SiO2-H2O［J］. Cement and Concrete Research, 2011, 41(9): 923-931.