田 竞1,2,苏 骏1,吴 鹏1,2,何 真2,蔡新华2
田竞,苏骏,吴鹏,等.纳米CaCO3对混凝土抗冲磨性能影响试验研究[J]混凝土与水泥制品,2020(6):9-12.
TIAN J,SU J,WU P,et al.Experimental Research on Abrasion Resistance of Concrete Mixed with Nano-CaCO3[J].China Concrete and Cement Products,2020(6):9-12.
纳米CaCO3对混凝土抗冲磨性能影响试验研究
田 竞1,2,苏 骏1,吴 鹏1,2,何 真2,蔡新华2
田竞,苏骏,吴鹏,等.纳米CaCO3对混凝土抗冲磨性能影响试验研究[J]混凝土与水泥制品,2020(6):9-12.
TIAN J,SU J,WU P,et al.Experimental Research on Abrasion Resistance of Concrete Mixed with Nano-CaCO3[J].China Concrete and Cement Products,2020(6):9-12.
摘 要:试验研究了不同掺量纳米CaCO3对混凝土力学性能和抗冲磨性能的影响,并通过水化热测试方法研究了纳米CaCO3对混凝土性能影响的机理。试验结果表明,适量的纳米CaCO3可以提升混凝土的力学性能,提高混凝土的抗压强度、劈裂抗拉强度和抗冲磨性能。当纳米CaCO3的掺量为1.5%时,混凝土抗冲磨强度提高约6倍;纳米CaCO3促进了水泥的水化反应,改善了水泥浆体微观结构,提升了整体的密实性。
Abstract: The effects of Nano-CaCO3 with different content on the mechanical properties and abrasion resistance of concrete were investigated experimentally. The influence mechanism of Nano-CaCO3 on concrete was studied by hydration heat test. The experimental results show that appropriate amount of Nano-CaCO3 (not exceed 1.5%) can improve the mechanical properties of concrete, such as the compressive strength, splitting tensile strength and abrasion resistance of concrete. The compressive strength of concrete with 1.5% Nano-CaCO3 is about 6 times than the one without Nano-CaCO3. The results reveal that Nano-CaCO3 promote hydration reaction, accelerate hydration heat release rate, refine the microstructure of cement paste, and enhance the overall compactness.
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