再生细骨料纤维砂浆力学性能正交试验研究  

Study on orthogonal experiment of recycled fine aggregate fiber mortar

作　　者：李家俊 金宝宏[1] 卢科周 梁少阳[1] 

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021

出　　处：《混凝土》2018年第1期121-123,共3页Concrete

基　　金：国家自然科学基金资助项目(11162015);宁夏回族自治区大学生创新实验项目(201610749076)

摘　　要：将C30废弃混凝土破碎后得到0.16~4.75 mm粒径的再生细骨料,通过正交试验研究水胶比、再生细骨料取代率、粉煤灰取代率和玄武岩纤维掺量对砂浆性能的影响,得出再生细骨料纤维砂浆的最佳配合比。结果表明:水胶比和再生细骨料取代率是影响再生骨料纤维砂浆力学性能的主要因素;粉煤灰对再生细骨料纤维砂浆的强度具有劣化作用;玄武岩纤维掺量达到0.13%时,抗压、抗折强度最高。It focus on the recycled fine aggregate of 0.16-4.75 mm particle size obtained by crushing C30 waste concrete.The effects of water to binder ratio, replacement ratio of recycled fine aggregate, fly ash replacement ratio and basalt fiber dosage on the properties of mortar were studied.Through orthogonal analysis, the optimal mix ratio of recycled mortar was obtained.The results show that the water to binder ratio and the replacement ratio of recycled fine aggregate are the main affect factors for properties of recycled aggregate fiber mortar.The increase of fly ash replacement rate has a great effect on the strength of recycled mortar.When the basalt fiber dosage is 0.13%, compressive strength, bending strength reached the maximum.

关 键 词：再生细骨料 正交试验 玄武岩纤维 

分 类 号：TU528.01[建筑科学—建筑技术科学]