建筑废弃物再生集料泡沫混凝土的配合比设计研

关键字：建筑废弃物再生集料,泡沫混凝土,正交试验,配合

（广州大学 土木工程学院，广东 广州  510006）
 

    摘要：通过正交试验研究硅酸盐水泥掺量、建筑废弃物再生集料掺量、水灰比3个因素对建筑废弃物再生集料泡沫混凝土强度的影响。结果表明，影响建筑废弃集料泡沫混凝土28 d无侧限抗压强度的主次顺序为：建筑废弃物再生集料掺量>硅酸盐水泥掺量>水灰比，最佳配合比为水泥405 kg/m3，建筑废弃物再生集料607.5 kg/m3，水243 kg/m3，聚羧酸高效减水剂1.22 kg/m3，其28 d无侧限抗压强度为4.85 MPa，流动度为170 mm，性能符合CJJ/T 177—2012《气泡混合轻质土填筑工程技术规程》的要求。
    关键词：建筑废弃物再生集料；泡沫混凝土；正交试验；配合比设计
    中图分类号：TU528.2       文献标识码：A        文章编号：1001-702X（2017）02-0114-03

Study of mix design about the construction waste recycled aggregate foam concrete
LI Jianhua，WU Kuanghuai，CAI Xu
（College of Civil Engineering，Guangzhou University，Guangzhou 510006，China）

    Abstract：Impact of Portland cement dosage，construction waste recycled aggregate- dosage，water cement ratio on strength of recycled aggregate foam concrete was researched by orthogonal test. Results show that the primary and secondary sequence of the influencing factors of the 28 d unconfined compressive strength of the construction waste aggregate foam concrete is：construction waste recycling collection> Portland cement> water cement ratio，optimal mix ratio is：Per cubic meter to join the cement 405 kg，construction waste recycled aggregate 607.5 kg，water 243 kg，polycarboxylate superplasticizer 1.22 kg，the unconfined compressive strength of 28 d is 4.85 MPa，the flow rate is 170 mm. And the above indexes all meet the requirements of the CJJ/T 177—2012"Technical specification for filling engineering of air bubble mixed light soil".
    Key words：construction waste recycled aggregate，foam concrete，orthogonal test，mix design