再生细骨料对再生混凝土力学性能及耐久性能的影响研究  

Influencement of recycled fine aggregate on mechanical properties and durability of recycled concrete

作　　者：李滢[1] 代大虎[1] 余红发[1] 

机构地区：[1]青海大学土木工程学院,青海西宁810016

出　　处：《混凝土》2016年第12期76-78,共3页Concrete

基　　金：青海省科技厅高新技术研究与发展计划项目(2013-G-209);国家自然科学基金资助项目(71463047)

摘　　要：研究了再生细骨料对再生混凝土的抗压强度、抗冻性能及碳化性能的影响。结果表明,当再生粗骨料取代率为50%时,随着再生细骨料掺量的增加再生混凝土强度并没有明显的下降;当再生粗骨料掺量为100%时,掺加了再生细骨料的混凝土的强度均比未掺加再生细骨料的混凝土的强度要低。随着再生细骨料掺量的增加再生混凝土的抗冻性能变化不大而碳化深度则有增加的趋势。The effect of the recycled fine aggregate on the compressive strength, frost-resistant and anti-carbonation of recycled concrete is studied.The results show that when the replacement ratio of recycled coarse aggregate is 50%, the strength of recycled concrete not decreases visibly with the increase of the content of recycled fine aggregate.When the replacement ratio of recycled coarse aggregate up to 100% ,the strength of recycled concrete with recycled fine aggregate is lower than the recycled concrete with not recycled fine aggregate. And also with the increase of the content of recycled fine aggregate, the frost-resistance of recycled concrete had no obvious change, but the anti-carbonation showed a rising trend.

关 键 词：再生细骨料 再生粗骨料 再生混凝土 抗压强度 耐久性能 

分 类 号：TU528.04[建筑科学—建筑技术科学]