外加剂对湿拌砂浆工作性能的影响研究  

Study on the Influence of Admixture on the Workability of Wet-mixed Mortar

作　　者：李殿权 

机构地区：[1]重庆建研科之杰新材料有限公司,重庆402760

出　　处：《混凝土世界》2024年第10期82-85,共4页China Concrete

摘　　要：研究了引气剂、保水剂、稳泡剂和超缓释剂对湿拌砂浆工作性能的影响,试验结果表明:引气剂掺量超过饱和点后对湿拌砂浆的24 h工作性能影响较小,同时引气剂种类会显著影响湿拌砂浆的初始及24 h工作性能;保水剂仅影响湿拌砂浆的分层度和保水率;稳泡剂掺量超过0.5%时,显著改善了湿拌砂浆的24 h工作性能,当稳泡剂掺量为0.9%时,湿拌砂浆的24 h稠度损失率仅7.8%;随着超缓释剂掺量的增加,湿拌砂浆的24 h工作性能不断增加,当其掺量达到2.5%时,湿拌砂浆的各项24 h指标均与初始相当。This paper studies the influence of air-entraining agent,water-retaining agent,foam stabilizer and ultraslow release agent on the working performance of wet-mixed mortar.The results show that the amount of airentraining agent exceeds the saturation point,it has little effect on the 24 h working performance of wet-mixed mortar,and the type of air entraining agent significantly affects the initial and 24 h working performance of wetmixed mortar.Water-retaining agent only affects the stratification degree and water retention rate of wet mixed mortar.When the amount of foam stabilizer is more than 0.5%,the 24 h working performance of wet-mixed mortar is significantly improved,and the amount reaches 0.9%,the 24 h consistency loss rate of wet-mixed mortar is only 7.8%.With the increase of the dosage of ultra-slow release agent,the 24 h working performance of wet-mixed mortar increases continuously,and the dosage reaches 2.5%,the 24 h working performance indicators of wet mixed mortar are equivalent to the initial ones.

关 键 词：湿拌砂浆 工作性能 工作性能损失 外加剂 

分 类 号：TU578.1[建筑科学—建筑技术科学]