极寒盐碱化条件下水泥—水玻璃材料性能研究
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摘要
为研究极寒、盐碱化程度高的地区水泥—水玻璃材料的性能变化及各参数之间的关系,选择多组不同配比的材料开展冻融、抗氯盐侵蚀试验。结果表明:在冻融状态下,材料凝结时间增长,28 d抗压强度降低约30%～50%;在氯盐侵蚀状态下,28 d抗压强度降低超过50%。对水泥—水玻璃材料性能产生影响的各因素中,水玻璃模数影响最大,呈正相关;其次是水灰比,呈负相关。优选出水灰比1. 0,体积比1∶1,水玻璃模数1. 2～1. 6的配比较为合理。
In order to study the performance changes of cement-water glass materials and the relationship between various parameters in areas with extremely cold and high salinization,multiple sets of materials with different proportions were selected to carry out freeze-thaw and anti-chlorine salt erosion tests. The results show that: under freezing and thawing conditions,the clotting time of the material increases,the compressive strength at 28 d decreases by about 30% ～ 50%,under the condition of chloride attack,the compressive strength at 28 d decreases by more than50%. Among the factors affecting the performance of cement-water glass materials,the modulus of water glass has the largest influence and is positively correlated,the second is the water-cement ratio,which is negatively correlated. Preferably,the water-cement ratio is 1. 0,the volume ratio is 1∶ 1,and the water glass modulus is 1. 2 ～ 1. 6.
In order to study the performance changes of cement-water glass materials and the relationship between various parameters in areas with extremely cold and high salinization,multiple sets of materials with different proportions were selected to carry out freeze-thaw and anti-chlorine salt erosion tests. The results show that: under freezing and thawing conditions,the clotting time of the material increases,the compressive strength at 28 d decreases by about 30% ～ 50%,under the condition of chloride attack,the compressive strength at 28 d decreases by more than50%. Among the factors affecting the performance of cement-water glass materials,the modulus of water glass has the largest influence and is positively correlated,the second is the water-cement ratio,which is negatively correlated. Preferably,the water-cement ratio is 1. 0,the volume ratio is 1∶ 1,and the water glass modulus is 1. 2 ～ 1. 6.
引文
[1]肖忠明,张大同,陈萍,等.水玻璃对水玻璃型碱矿渣水泥的凝结时间及力学性能的影响[J].水泥·石灰,1994(4):13-15.
[2]青山,罗毅.影响水泥—水玻璃注浆材料特性的关键因素研究[J].煤炭技术,2017,36(11):209-210.
[3]李科,周松,孙连元,等.盾构隧道施工用双液浆强度及其σ-ε特性三轴试验研究[J].铁道建筑,2009(8):71-74.
[4]吴其胜.水玻璃模数对碱矿渣水泥性能的影响[J].水泥工程,1999(5):10-11.
[5] GB/T 749—2008,水泥抗硫酸盐侵蚀试验方法[S].
[6] GB/T 50082—2009,普通混凝土长期性能和耐久性能试验方法标准[S].
[2]青山,罗毅.影响水泥—水玻璃注浆材料特性的关键因素研究[J].煤炭技术,2017,36(11):209-210.
[3]李科,周松,孙连元,等.盾构隧道施工用双液浆强度及其σ-ε特性三轴试验研究[J].铁道建筑,2009(8):71-74.
[4]吴其胜.水玻璃模数对碱矿渣水泥性能的影响[J].水泥工程,1999(5):10-11.
[5] GB/T 749—2008,水泥抗硫酸盐侵蚀试验方法[S].
[6] GB/T 50082—2009,普通混凝土长期性能和耐久性能试验方法标准[S].