摘要
为研究机制砂MB值对干混砂浆性能的影响,将泥粉按0、15%、30%、45%和60%的用量等量替机制砂中的石粉,从而配制出不同MB值的机制砂。利用不同MB值的机制砂制备M10抹灰砂浆,并测试各组砂浆的标准稠度用水量、密度、2 h稠度损失率、砂浆保水率、7 d及28 d抗压强度,从而研究机制砂MB值对干混砂浆性能的影响规律。研究结果表明,随着机制砂MB值的提高,砂浆的密度无明显变化,但标准稠度用水量,2 h稠度损失率增加,砂浆保水率及7 d和28 d强度有所下降。
In order to study the impact of the performance of sand MB values on the performance of dry mix mortar,the amount of mud is replaced by 0,15%,30%,45%and 60%sand.Use the mechanism of different MB values to prepare the M10 plastering mortar,and test the standard consistency,density,2h consistency loss rate,mortar water preservation rate,7 d and 28 d compression intensity of each group of mortar.The influence of mixed mortar performance.The results of the study show that with the increase of mechanism sand MB value,the density of the mortar has not changed significantly,but the standard consistency is used,the consistency loss rate of 2 h has increased,the mortar water retention rate and 7 d and 28 d intensity have decreased.
作者
王青发
Wang Qingfa(Jiangxi building materials research and Design Institute Co.Ltd,Nanchang,Jiangxi 330001)
出处
《江西建材》
2023年第9期23-24,共2页
Jiangxi Building Materials
基金
2022年度省国资委科技创新专项项目《水泥基材料绿色高性能化和智能功能化共性关键技术及应用》。
关键词
机制砂
MB值
干混砂浆
抗压强度
保水率
2
h稠度损失率
Mechanical sand
MB value
Dry mixed mortar
Compressive strength
Water preservation rate
2 h consistency loss rate
