Effect of glass powder/silica fume mixture on durability of concrete under corrosive environment

Abstract

Abstract: Based on the species and contents of corrosive ions in the soil of Golmud area, the composite solutions of Na₂CO₃, NaCl, Na₂SO₄ and MgSO₄ were designed for full immersion test, the influence of glass powder/silica fume mixture on the durability of concrete was studied by the variation of relative quality evaluation parameter (ω₁) and relative dynamic modulus of Elasticity (ω₂) .The influence of glass powder/silica fume mixture on the hydration reaction of cementitious materials under standard curing condition was analysed and the microcosmic mechanism of glass powder/silica fume mixture concrete corroded incompound salt solution was discussed. The service life of concrete corroded by compound salt solution was predicted according to Wiener theory.The results showed that the degradation range of concrete in the corrosion environment of compound salt solution is different with the change of glass powder content. The hydration products of cementitious materials are not affected by the addition of glass powder/silica powder under standard curing condition, and the pozzolanic effect of SiO₂ is still obvious after curing from56 d to 120 d.When the content of glass powder is 10% and silica fume is 6%,the air hole structure of the concrete is improved, so the average air hole diameter of the concrete is smaller than that of the concrete without glass powder and silica fume. The glass powder should not exceed 10% when glass powder/silica powder is added to concrete.

Key words: compound salt solution, glass powder, Wiener theory

CLC Number:

TB30
TU501

WU Duo-ming, WANG Jin-man, WANG Xin, SHI Xu-dong. Effect of glass powder/silica fume mixture on durability of concrete under corrosive environment[J]. Journal of Lanzhou University of Technology, 2022, 48(3): 27-34.

References

[1] 金珊珊,冯致皓.废弃玻璃在混凝土中的应用情况综述 [J].混凝土与水泥制品,2021(9):91-95.
[2] 杨凤玲,嵇银行,李玉寿,等.废玻璃细骨料混凝土的试验研究 [J].混凝土,2011(9):81-83,86.
[3] 戈雪良,曾力,方坤河,等.磷渣粉对水工混凝土性能的影响 [J].水力发电学报,2008,2(27):84-88.
[4] 张文星,苏有文,李娇.玻璃砂和玻璃粉复合对混凝土基本性能的影响 [J].玻璃,2021,48(11):7-11.
[5] 龚建清,杨倩,郭丽,等.碱激发矿渣-玻璃粉基泡沫混凝土性能研究 [J].硅酸盐通报,2022,41(1):226-234.
[6] 王迎斌,宋钰莹,贺行洋,等.超细玻璃粉对水泥浆体反应特性的影响 [J].新型建筑材料,2021,48(10):24-29.
[7] 黄达,高鹏飞,刘光焰,等.玻璃粉混凝土干燥收缩影响效果及作用机理研究 [J].混凝土,2021(2):77-81.
[8] 杨震樱,周长顺.含玻璃粉超高性能混凝土力学性能及微观结构研究 [J].硅酸盐通报,2021,40(12):3956-3963.
[9] 杜渊博,葛勇.偏高岭土、玻璃粉和石灰石粉对水泥石微观结构和性能的影响 [J/OL].建筑材料学报:1-12[2022-01-13].http://kns.cnki.net/kcms/detail/31.1764.TU.20210916.0942.002.html.
[10] FOUAD B,RACHID C,ABDELKRIM T,et al.On the hygrothermal behavior of concrete containing glass powder and silica fume [J].Journal of Cleaner Production,2021,318(10):128647.
[11] 俞宣良.玻璃粉对混凝土的微观性能和力学性能影响的研究 [D].桂林:桂林理工大学,2020.
[12] TANGPAGASIT J,CHEERAROT R,Chai J,et al.Packing effect and pozzolanic reaction of fly ash in mortar [J].Cement & Concrete Research,2005,35(6):1145-1151.
[13] DYER T D,DHIR R K.Chemical reactions of glass cullet used as cement component [J].Journal of Materials in Civil Engineering,2001,13(6):412-417.
[14] RASHIDIAN-DEZFOULI H,AFSHINNIA K,RANGARAJI P R.Efficiency of ground glass fiber as a cementitious material,in mitigation of alkali-silica reaction of glass aggregates in mortars and concrete [J].Journal of Building Engineering,2018,15(1):171-180.
[15] LEE G,LING T C,WONG Y L,et al.Effect of crushed glass cullet sizes,casting methods and pozzolanic materials on ASR of concrete blocks [J].Construction and Building Materials,2011(25):2611-2618.
[16] NASSAR R U D,SOROUSHIAN P.Strength and durability of recycled aggregate concrete containing milled glass as partial replacement for cement [J].Construction and Building Materials,2012(29):368-377.