不同骨料替代率再生PVC塑料混凝土的力学性能和抗冻性研究  

Mechanical Properties and Frost Resistance of Recycled PVC Plastic Concrete with Different Aggregate Substitution Rates

作　　者：赵军[1] 马腾野 崔彦 ZHAO Jun;MA Teng-ye;CUI Yan(School of Civil and Architectural Engineering/Anyang Institute of Technology,Anyang 455000,China;College of Civil Engineering/Hebei Polytechnic Institute,Shijiazhuang 050091,China)

机构地区：[1]安阳工学院土木与建筑工程学院,河南安阳455000 [2]河北工程技术学院土木工程学院,河北石家庄050091

出　　处：《山东农业大学学报(自然科学版)》2025年第1期174-180,共7页Journal of Shandong Agricultural University:Natural Science Edition

基　　金：河南省科技攻关项目“型钢/ECC组合连接装配式剪力墙抗震性能及设计方法研究”(222102320027)。

摘　　要：使用部分再生塑料替代混凝土中的细骨料,达到环保建设的效果。以再生聚氯乙烯(PVC)塑料为原材料,按照20%、25%和30%的骨料替代率制备塑料混凝土,分别测试样本的抗压强度、抗折强度、密度、孔隙率和抗冻性。试验结果显示,20%替代率的再生PVC塑料混凝土的抗压强度为20 MPa~25 MPa;最大韧性为3.78 MPa,最小韧性为2.29 MPa,均高于理想值;密度高于2300 kg/m^(3);孔隙率最大值为13.8%;冻融循环后,整体抗压强度高于20.2 MPa,强度损失率为17.5%。由此证明了20%替代率的再生PVC塑料混凝土力学性能和抗冻性能最佳。Using partially recycled plastic to replace fine aggregates in concrete achieves the effect of environmental protection construction.Using recycled polyvinyl chloride(PVC)plastic as raw material,plastic concrete was prepared at 20%,25%,and 30%aggregate substitution rates.The compressive strength,flexural strength,density,porosity,and frost resistance of the samples were tested separately.The test results show that the compressive strength of recycled PVC plastic concrete with 20%substitution rate is 20 MPa-25 MPa;the maximum toughness is 3.78 MPa,and the minimum toughness is 2.29 MPa,both of which are higher than the ideal value;density is higher than 2300 kg/m^(3);the maximum porosity is 13.8%;after freeze-thaw cycles,the overall compressive strength is higher than 20.2 MPa,with a strength loss rate of 17.5%.This proves that the mechanical properties and frost resistance of recycled PVC plastic concrete with a 20%substitution rate are the best.

关 键 词：聚氯乙烯再生塑料混凝土 力学性能 抗冻性 

分 类 号：TB24[一般工业技术—工程设计测绘]