孔令康1,2,孙 敏1,2
孔令康,孙敏.海水冻融侵蚀下PVA-纳米SiO2混凝土性能试验研究[J].混凝土与水泥制品,2021(1):50-53.
KONG L K,SUN M.Experimental Study on the Performance of PVA-nano-SiO2 Concrete Under the Seawater Freeze-thaw Erosion[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):50-53.
海水冻融侵蚀下PVA-纳米SiO2混凝土性能试验研究
孔令康1,2,孙 敏1,2
孔令康,孙敏.海水冻融侵蚀下PVA-纳米SiO2混凝土性能试验研究[J].混凝土与水泥制品,2021(1):50-53.
KONG L K,SUN M.Experimental Study on the Performance of PVA-nano-SiO2 Concrete Under the Seawater Freeze-thaw Erosion[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):50-53.
摘 要:采用快冻法研究了海水冻融环境下PVA纤维和纳米SiO2对混凝土抗冻性能的影响。结果表明:每25次冻融循环结束后,不同类型混凝土的相对动弹性模量和抗压强度剩余比都有不同程度的下降;PVA纤维和纳米SiO2均能提升混凝土的抗冻性能;单掺PVA纤维或纳米SiO2试验组的抗冻性普遍低于PVA-纳米SiO2混掺试验组;混掺0.1% PVA纤维和1.0%纳米SiO2试验组的抗冻性最好。
Abstract: The effect of PVA fiber and nano-SiO2 on the frost resistance of concrete under the seawater freeze-thaw erosion was studied by the rapid freezing method. The results show that after every 25 freeze-thaw cycles, the relative dynamic elastic modulus and compressive strength residual ratio of various types of concrete decrease to varying degrees. Both PVA fiber and nano-SiO2 can improve the frost resistance of concrete. The frost resistance of the PVA fiber or nano-SiO2 test group is generally lower than that of the PVA-nano-SiO2 mixed test group. The frost resistance of the test group mixed with 0.1% PVA fiber and 1.0% nano-SiO2 is the best.
版权所有:中国混凝土与水泥制品网 苏ICP备10086386号 网站建设:中企动力 苏州