废弃泥陶粒掺碎石制备植生混凝土性能研究

（1.南京工业大学 城市建设学院，江苏 南京 211816；2.中国电建集团华东勘测设计研究院有限公司，浙江 杭州  311122）

    摘要：以由清淤海泥、市政污泥为原料制备的陶粒及碎石为组合骨料，考虑5组不同的骨料配比制备植生混凝土进行性能比较分析。结果表明，V（陶粒）∶V（碎石）=1∶1时试件的28 d抗压强度可达到10.5 MPa；5组试样植生效果均较好，其中配置陶粒骨料的4个试验组发芽率均高于单一碎石骨料的试验组；5组试样对TN、TP和CODcr均有较好的去除效果，总体上配置陶粒后植生混凝土水质净化效果更优，以骨料中V（陶粒）∶V（碎石）=3∶1植生混凝土的综合性能最优；控制同一降雨强度（0.8 mm/min）条件下，试件滞蓄雨水能力随着骨料中陶粒占比增大而增大。

    关键词：植生混凝土；废弃泥陶粒；抗压强度；水质净化；雨水滞蓄 

    中图分类号：TU528.2        文献标识码：A        文章编号：1001-702X（2018）09-00

 

Study on the properties of plant-based concrete prepared with abandoned mud ceramsite and crushed stone

ZHAO Jikui1，XIA Ting1，PENG Hui1，LI Yue1，JIANG Yuxin1，SHENG Sheng2

（1.School of Urban Construction，Nanjing Tech University，Nanjing 211816，China；

 2.Powerchina Huadong Engineering Coporation Limited，Hangzhou 311122，China）

    Abstract：Taking ceramsite and crushed stone prepared from dredged sea mud and municipal sludge as raw materials，the composite aggregate was considered. The performance of plant-based concrete with 5 different types of aggregate mix ratio was compared and analyzed. The experimental results show that the compressive strength of V（ceramsite）∶V（crushed stone）=1∶1 28 d can reach about 10.5 MPa，and the results of 5 experimental groups are all good. Among them，the germination rate of the 4 experimental groups with ceramisite was higher than that of the experimental group with the single aggregates of gravel；the five experimental groups had a good removal effect on TN，TP and CODcr，the overall water-purification effect of the plant-based concrete with ceramsite is better，and the overall performance is the best under the condition of V（ceramsite）∶V（crushed stone）=3∶1. The rainfall storage ability of the specimens improves with the increase of ceramic proportion under the same rainwater intensity （0.8 mm/min）.

    Key words：plant-based concrete，abandoned mud ceramsite，compressive strength，water quality purification，rainwater storage