摘要
废弃混凝土在建筑垃圾中占有很大比例,一般达到55%~65%,对废弃混凝土循环再利用进行研究,不仅可以保护环境、节约土地,还可以降低建设成本。通过试验,研究水灰比0.55时再生粗骨料不同取代率下的混凝土抗压强度的特征及分布规律。分析试验结果表明:在水灰比0.55条件下,再生混凝土抗压强度随着废弃料粗骨料取代率的增大呈现先增大后减小的趋势;当粗骨料取代率50%时,再生混凝土的抗压强度最接近普通混凝土。
Waste concrete for construction waste occupies a large proportion, generally 55% to 65%. The article is based on studying waste concrete recycling, not only can protect the environment, save the land, but also can reduce construction costs. Through the experiment, the characteristics and distribution regularity of concrete compressive strength under different substitution rates of recycled coarse aggregate at 0.55 were studied. The results show that the compressive strength of recycled concrete increases with the increase of the ratio of coarse aggregate of waste material under the condition of water-cement ratio of 0.55. When the ratio of coarse aggregate is 50%.The compressive strength of recycled concrete is closest to ordinary concrete.
出处
《陕西水利》
2017年第4期57-59,共3页
Shaanxi Water Resources
关键词
循环利用
再生粗骨料
取代率
抗压强度
特征规律
Recycling utilization, recycled coarse aggregate, substitution rate, compressive strength and characteristics and reguahion
