废渣粉掺量对混凝土流动性、粘聚性、强度影响试验研究  

Experimental Study on the Effects of Waste Slag Powder on the Flowability,Cohesiveness and Strength of Concrete

作　　者：段登辉 陈嘉健 徐堔圳 刘凌飞 汪文学[2] DUAN Denghui;CHEN Jiajian;XU Shenzhen;LIU Lingfei;WANG Wenxue(School of Transportation,Civil Engineering&Architecture,Foshan University,Foshan,China 528000;Research Institute for Applied Mechanics,Kyushu University,Fukuoka,Japan 819-0395)

机构地区：[1]佛山科学技术学院交通与土木建筑学院,广东佛山528000 [2]九州大学应用力学研究所,日本福冈819-0395

出　　处：《温州大学学报（自然科学版）》2024年第2期58-66,共9页Journal of Wenzhou University(Natural Science Edition)

基　　金：广东省基础与应用基础研究基金(2022A1515010404)。

摘　　要：将工业废渣粉代替部分水泥或骨料制备废渣粉混凝土是一种环保且经济的处理工业废渣粉的方案.研究了不同废渣粉掺量对混凝土流动性、粘聚性、抗压强度影响的作用机理,研究结果表明,废渣粉等体积置换骨料使混凝土的浆膜厚度显著提高,而浆膜厚度是混凝土流动性、粘聚性和抗压强度的关键影响因素之一;随着废渣粉置换量增加,混凝土流动性增强、粘聚性变差、28 d抗压强度先增加后降低;当废渣粉置换骨料量为10%时,混凝土28 d抗压强度达到最大,因此在实际工程中应用废渣粉时,要注意置换骨料量控制在10%左右,这样既能保证混凝土强度,又能实现废渣粉废物利用.Replacing part of cement or combining aggregate with waste industrial slag powder to produce concrete is an environmentally friendly and economical way to consume industrial slag powder.This paper studies the mechanism of the effects of waste slag powder on the flowability,cohesiveness and compressive strength of concrete.The results show that the film thickness of concrete can be significantly increased by equal volume replacement of the aggregate by the waste slag powder,and the film thickness is one of the key factors affecting the flowability,cohesiveness and compressive strength of concrete.With the increasing amount of the waste slag powder,the flowability of concrete increases,the cohesiveness decreases,and the 28 d compressive strength first increases and then decreases.When the waste slag powder replaces 10%of the aggregate,the 28 d compressive strength of concrete reaches the maximum.Therefore,when the waste slag powder is applied as a replacement for the aggregate in real project,attention should be paid to limit the replacement amount below 10%.This not only ensures the strength of concrete,but also realizes the waste utilization of slag powder.

关 键 词：废渣粉混凝土 骨料置换量 流动性 粘聚性 强度 浆膜厚度 

分 类 号：TU528.45[建筑科学—建筑技术科学]