搅拌工艺对高掺量丁苯乳液改性硫铝酸盐水泥性能的影响

doi:10.11896/cldb.22110286

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Abstract The effects of mixing speed and mixing time on the homogeneity, air content, rheological properties and early strength of high dosage SBR latex modified sulphoaluminate cement (SAC) mortar were studied. The hydration degree and pore characteristics of hardened mortar were investigated by TGA and BET tests. The results show that the homogeneity and mechanical strength of mortar can be improved by prolonging the mixing time and increasing the mixing speed. However, when the mixing speed is up to 176 r/min, increasing the mixing time will increase the air content of fresh mortar, and lead to the improvement of the porosity of hardened mortar. Prolonging the mixing time and increasing the mixing speed hinder the flocculation of mortar and destroy the bridging of particles, significantly reducing the structural build-up rate. Prolonging the mixing time reduces the yield stress and plastic viscosity of mortar. Optimizing the mixing technique is helpful to provide important parameters for the formulation of mixing specifications for filling layer repair mortar.

Key words： sulphoaluminate cement mixing technique styrene-butadiene rubber latex rheological property porosity

Published: 10 May 2024 Online: 2024-05-13

CLC number:

TU528.41

Fund:National Key R & D Program of China (2022YFB2603305) and the National Natural Science Foundation of China (52108261).

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	Articles by authors
	YUAN Qiang
	ZHONG Fuwen
	YAO Hao
	ZUO Shenghao
	XIE Zonglin
	JIANG Mengjie

Cite this article:

YUAN Qiang,ZHONG Fuwen,YAO Hao, et al. Effect of Mixing Technique on Performance of High Dosage Styrene-Butadiene Rubber Latex Modified Sulphoaluminate Cement[J]. Materials Reports, 2024, 38(9): 22110286-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22110286 OR http://www.mater-rep.com/EN/Y2024/V38/I9/22110286

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