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探究纳米SiO_2复掺粉煤灰之后代替水泥,并配备出强度等级不相同的C35普通混凝土及C60的高强混凝土,对混凝土开展性能测试。试验结果表明,当龄期为28 d时立方体的抗压强度以及轴心抗压强度最大,并且在对等级为C35的普通混凝土与C60的高强混凝土进行力学性能探究的结果表明,混凝土的工作性往往会伴随着纳米SiO_2的增加而呈现出降低的趋势,并且所掺入的混凝土等级为C35的普通混凝土的坍落度以及拓展度的下降速度要快于C60高强度混凝土。此外,对于混凝土的抗渗性能所遵循的原则是依据纳米SiO_2的掺入数量而不断增加,且强度较低的混凝土抗渗能力的提高幅度会比强度较高的混凝土提升速度要快。
Explore the nano-SiO2 mixed with fly ash instead of cement, and equipped with a different intensity levels of C35 ordinary concrete and C60 high-strength concrete, concrete performance testing. The test results show that when the age of 28 d cube compressive strength and axial compressive strength of the largest, and in the C35 ordinary concrete and C60 high-strength concrete mechanical properties of the results show that the work of concrete Tends to decrease along with the increase of nano-SiO 2, and the slump and extension degree of conventional concrete mixed with C35 is faster than that of C60 high-strength concrete. In addition, the principle that the impermeability of concrete follows is that the impermeability of concrete with lower strength will increase faster than that of concrete with higher strength, according to the amount of nano-SiO2 incorporated.