掺加nano-SiO2的水泥稳定冷再生基层材料性能研究  

Study on the Properties of Cement Stabilized Cold Recycling Base Material Mixed with Nano-SiO2

作　　者：冯纪兵 董硕硕 FENG Ji-bing;DONG Shuo-shuo(School of Civil Engineering and Communication,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Zhengzhou Design Institute of China Railway Engineering Consulting Group Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]华北水利水电大学土木与交通学院,郑州450045 [2]中铁工程设计咨询集团有限公司郑州设计院,郑州450001

出　　处：《价值工程》2020年第8期105-107,共3页Value Engineering

摘　　要：为研究掺入nano-SiO2的水泥稳定冷再生基层材料性能的变化规律,将合成级配优化后,设计6种掺量配比以研究nanoSiO2对水稳冷再生基层混合料力学性能的影响。试验结果表明,掺加nano-SiO2的水稳冷再生混合料的7d、28d、90d无侧限抗压强度和90d劈裂强度均有提升,其中7d无侧限抗压强度、90d劈裂强度提升最为明显,28d、90d抗压强度也有所提升,但提升效果有限。In order to study the change law of the properties of cement stabilized cold recycling base materials with nano-SiO2,after optimizing the synthesis grading,six mixing ratios were designed to study the effect of nano-SiO2 on the mechanical properties of cement stabilized cold recycling base materials.The test results show that the 7d,28d and 90d unconfined compressive strength and 90d splitting strength of the cement stabilized cold recycling mixture with nano-SiO2 are all improved.Among them,the improvement of 7d unconfined compressive strength and the 90d splitting strength were the most obvious,and the 28d and 90d compressive strength also improved,but the improvement effect was limited.

关 键 词：道路工程 冷再生基层 NANO-SIO2 力学性能 水泥稳定 

分 类 号：U414[交通运输工程—道路与铁道工程]