矿物掺合料种类对机制砂预拌砂浆性能的影响  

Effect of the type of supplementary cementitious materials on performance of ready-mixed mortar with manufactured sand

作　　者：陈健 黄波 代柱端 周晓阳 CHEN Jian;HUANG Bo;DAI Zhuduan;ZHOU Xiaoyang(Hubei Zhuxuan New Material Co.,Ltd.,Wuhan 430339,China;Wuhan Uchange Technology Co.,Ltd.,Wuhan 430000,China)

机构地区：[1]湖北筑选新材料有限公司,湖北武汉430339 [2]武汉优城科技有限公司,湖北武汉430000

出　　处：《混凝土与水泥制品》2025年第2期97-100,共4页China Concrete and Cement Products

摘　　要：研究了矿物掺合料种类[石灰岩石粉(SH)、花岗岩石粉(HG)、钢渣粉(GZ)、粉煤灰(FA)]对花岗岩机制砂预拌砂浆孔结构、稠度、稠度损失、保水性、表观密度、抗压强度、干燥收缩和吸水率的影响。结果表明:28d时,砂浆孔隙率的大小顺序为:FA组<GZ组<SH组<HG组;砂浆稠度的大小顺序为:FA组>SH组>GZ组>HG组,稠度损失的大小顺序为:HG组>GZ组>SH组>FA组,保水性的大小顺序为:HG组>FA组>SH组>GZ组,表观密度的大小顺序为:GZ组>HG组>SH组>FA组;28d时,砂浆抗压强度的大小顺序为:GZ组≈FA组>SH组>HG组,砂浆干燥收缩值的大小顺序为:FA组<GZ组<SH组<HG组,砂浆吸水率的大小顺序为:FA组<SH组<GZ组<HG组。The effects of the types of supplementary cementitious materials[limestone powder(SH),granite stone powder(HG),steel slag powder(GZ),and fly ash(FA)]on the pore structure,consistency,loss of consistency,water retention,apparent density,compressive strength,drying shrinkage,and water absorption of ready-mixed mortar with granite manufactured sand were studied.The results show that,at 28 d,the order of porosity of mortar is as follows:FA group<GZ group<SH group<HG group.The order of the consistency of the mortar is as follows:FA group>SH group>GZ group>HG group,the order of the loss of consistency is as follows:HG group>GZ group>SH group>FA group,the order of water retention is as follows:HG group>FA group>SH group>GZ group,the order of the apparent density is as follows:GZ group>HG group>SH group>FA group.At 28 d,the order of compressive strength of mortar is as follows:GZ group≈FA group>SH group>HG group,the order of drying shrinkage value of mortar is as follows:FA group<GZ group<SH group<HG group,the order of water absorption of mortar is as follows:FA group<SH group<GZ group<HG group.

关 键 词：预拌砂浆 花岗岩机制砂 孔隙率 工作性 抗压强度 干燥收缩 吸水率 

分 类 号：TU528.0[建筑科学—建筑技术科学]