搅拌工艺对自密实水泥砂浆强度和扩展度的影响

doi:10.13229/j.cnki.jdxbgxb.20230918

Abstract

Abstract:

The effect of mixing speed， time， and low speed mixing process after placing defoamer on strength and slump of self-compacting cement mortar were investigated. Test results show that slump of cement mortar mixed by continuously variable transmission （CVT） mixer is larger than that mixed by conventional cement mortar mixer under the same mix proportions. Compared with mixing process with low speed and short time， slump and strength of cement mortar corresponding to mixing process with high speed and longer time increase 10% and 7%， respectively. Process of low speeding mixing after placing defoamer has an appreciable increase in compressive strength， which make the 7 d strength of cement mortar is larger than 28 d strength of cement mortar without this process， when their previous mixing process are the same.

Key words: self compacting cement mortar, mixing speed, mixing time, defoamer, strength, slump

Jing LI,Zheng-hui LI,Chong-xiao GUO,Jian-sheng HU. Effect of mixing process on strength and slump of self compacting cement mortar[J].Journal of Jilin University(Engineering and Technology Edition), 2024, 54(12): 3552-3557.

Figures/Tables 6

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Effect of mixing process on strength and slump of self compacting cement mortar

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