摘要
为了研究矿物掺合料对RAC界面性能的改善效果,对174组522个活性矿物增强RAC试件进行力学性能试验,分析了矿物掺合料在不同掺量和体积率下对RAC的力学性能和变形性能影响的变化规律。研究结果表明:粉煤灰FA对RAC立方体的早期抗压强度的影响比较大,且随着掺量的增加,立方体抗压强均有不同程度的降低。随减水剂PS掺量的增加,其降幅增大,随硅粉SF含量的增加,相应降幅随之降低,但对于轴心抗压强度、劈拉强度和抗折强度,增强效果较为明显。随FA、PS和SF含量的变化,峰值应变随之降低,而弹性模量随FA、PS含量的增加而增加。
In order to study the mineral admixture on the properties of the RAC interface improvements, the 174 groups of 522 active mineral enhanced RAC mechanics performance test, analyzed the mineral admixture under different content and volume rate on mechanical properties of RAC and changed rule of the influence of the deformation performance, Research results show that the fly ash （FA） on the early compressive strength of RAC cube is larger, with the increase of the content of the cube, the cube compressive strength show different degrees of reduction. With the increase of water reducing agent （PS） and silica fume （SF） , the decline increases. But the axial compressive strength, splitting tensile strength and flexural strength, enhancement effect is more obvious. Along with the change of FA, PS and SF levels, the peak strain decreases. However, the elastic modulus increases with the increase of FA and PS.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2017年第5期1505-1511,共7页
Bulletin of the Chinese Ceramic Society
基金
西京学院校基金(XJ160128)
国家自然科学基金(51178388
51008245
51678480)
陕西省教育厅重点实验室科研计划项目(11JS059
12JS055)
陕西省科技统筹创新工程计划(2013SZS01-Z02
2013SZS01-K01)
陕西省攻关项目(2014K06-34)
关键词
再生混凝土
强度比
高效减水剂
力学性能
recycled concrete
intensity ratio
super plasticity
mechanical property
