3D打印再生细骨料混凝土配合比设计研究  

Research on Mix Proportion Design of 3D Printed Recycled Fine Aggregate Concrete

作　　者：张自荣[1] 苏建东 周红林 刘海峰 杨光 ZHANG Zirong;SU Jiandong;ZHOU Honglin;LIU Haifeng;YANG Guang(School of Civil Engineering,Changchun Institute of Technology,Changchun 130012,China)

机构地区：[1]长春工程学院土木工程学院,长春130012

出　　处：《长春工程学院学报(自然科学版)》2025年第1期6-11,共6页Journal of Changchun Institute of Technology:Natural Sciences Edition

摘　　要：采用再生细骨料等质量取代天然砂,以再生砂取代率、水灰比和增稠剂掺量为影响因素,研究各因素对3D打印再生细骨料混凝土流动度和抗压强度的影响,进行再生细骨料混凝土最佳配合比设计。结果表明:混凝土的流动度和抗压强度会随着再生砂取代率的增加而降低;水灰比增加,混凝土流动度变大,抗压强度降低;增稠剂掺量的提高会导致混凝土的泌水性降低,混凝土的流动度和抗压强度降低。It utilizes recycled fine aggregate as an equal mass replacement for natural sand,with the replacement ratio of recycled sand,water-cement ratio,and thickener dosage as influencing factors,to investigate their effects on the fluidity and compressive strength of 3D printed recycled fine aggregate concrete,aiming to design an optimal mix proportion.The results demonstrate that both the fluidity and compressive strength of concrete decrease with increasing recycled sand replacement ratio.An increase in water-cement ratio enhances concrete fluidity but reduces compressive strength.Higher thickener dosage leads to reduced bleeding,accompanied by decreases in both fluidity and compressive strength of the concrete.

关 键 词：3D打印混凝土 配合比设计 再生细骨料混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]