纳米纤维改性橡胶混凝土的性能试验

Performance Test of Nanofiber Modified Rubber Concrete

为改进传统橡胶混凝土的抗压强度,采用在橡胶混凝土中同时掺入纳米钢纤维和纳米SiO_(2)的方法进行改性,并从抗压强度和粘结强度两个方面对改性后的橡胶混凝土性能进行表征。结果表明,在纳米钢纤维和纳米SiO_(2)掺量为1%时,得到的橡胶混凝土在抗压强度和劈裂抗拉强度方面都表现出良好的性能,且混凝土自由端滑移值显著增大,说明粘结强度大大提高。由此得出结论,通过纳米钢纤维和纳米SiO_(2)的改性,可提高橡胶混凝土的性能。

In order to improve the compressive strength of traditional rubber concrete,the method of adding nano-steel fiber and nano-SiO_(2)into the rubber concrete is used to modify it,and the properties of modified rubber concrete are characterized from two aspects of compressive strength and bonding strength.The results show that when the content of nano-steel fiber and nano-SiO_(2)is 1%,the rubber concrete obtained shows good performances in compression strength and splitting tensile strength,and the free end slipping value of concrete is significantly increased,which indicates that the bonding strength is greatly improved.It is concluded that the performance of rubber concrete can be improved by the modification with nano-steel fiber and nano-SiO_(2).