泡沫掺量对再生细骨料泡沫混凝土性能影响分析  

Analysis of the Effect of Foam Dosage on the Performance of Recycled Fine Aggregate Foamed Concrete

作　　者：蔡燕霞 罗帅 邱伟 郜佳琦 薛晓杰 李立辉 CAI Yanxia;LUO Shuai;QIU Wei;GAO Jiaqi;XUE Xiaojie;LI Lihui(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Beijing Zhonglu Gaoke Highway Technology Co.,Ltd.,Beijing 100088,China;Research Institute of Highway Ministry of Transport,Beijing 100088,China;Guangzhou Expressway Technology Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]河北工程大学土木工程学院,邯郸056038 [2]中路高科(北京)公路技术有限公司,北京100088 [3]交通运输部公路科学研究院,北京100088 [4]广州市高速公路有限公司,广州510000

出　　处：《粉煤灰综合利用》2025年第1期1-6,共6页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金(52178428)。

摘　　要：为实现废旧混凝土再生细骨料的高值化利用,研究了不同泡沫掺量、聚丙烯纤维掺量对再生细骨料泡沫混凝土的湿密度、流动度、抗压强度等工作性能影响,结合多种拟合形式分析了泡沫掺量与抗压强度之间的拟合关系。结果表明:随泡沫掺量的增加,再生细骨料泡沫混凝土的湿密度明显下降、流动度减小、抗压强度降低;对不同泡沫掺量的再生细骨料泡沫混凝土,聚丙烯纤维的掺入会对湿密度与流动度产生不同影响,对抗压强度无明显改善效果;根据有无聚丙烯纤维掺入,再生细骨料泡沫混凝土的泡沫掺量与强度最佳拟合形式分别为指数拟合和多项式拟合。In order to achieve the high-value utilization of recycled fine aggregate from waste concrete,the study investigated the influence of different foam dosages and the presence of polypropylene fibers on the workability properties,such as wet density,flowability,and compressive strength of recycled fine aggregate foamed concrete.By combining various fitting forms,the relationship between foam dosage and compressive strength was analyzed.The research showed that with an increase in foam dosage,the wet density of recycled fine aggregate foamed concrete decreased significantly,while the flowability and compressive strength decreased.The addition of polypropylene fibers had different effects on the wet density and flowability of recycled fine aggregate foamed concrete with different foam dosages,but it did not have a significant improvement effect on compressive strength.According to the presence or absence of polypropylene fibers,the optimal fitting forms for the relationship between foam dosage and strength of recycled fine aggregate foamed concrete were exponential fitting and polynomial fitting,respectively.

关 键 词：再生细骨料 泡沫混凝土 抗压强度 泡沫掺量 聚丙烯纤维 

分 类 号：U414[交通运输工程—道路与铁道工程]