Performance of High-Efficiency Liquid Cement Setting Accelerator with Alkali-Free and its Acceleration Mechanism

Yan Wang; Jun Wang; Shu Heng Qiu; Fei Gao; Rui Gu

doi:10.4028/www.scientific.net/AMM.377.69

Paper Titles

Thermal Properties of PVA-Fiber Reinforced Cement Composites at High Temperatures
p.45

Effects of Fly Ash/Slag Ratio and Liquid/Binder Ratio on Strength of Alkali-Activated Fly Ash/Slag Mortars
p.50

High Temperature Testing of Cement Mortar Containing MSWI Bottom Ash
p.55

Compressive Strength of Cement Mortar Using Sebha Clay, Treated by Sonication Method
p.60

Performance of High-Efficiency Liquid Cement Setting Accelerator with Alkali-Free and its Acceleration Mechanism
p.69

Influence of Fly Ash on Thaumasite Form of Sulfate Attack in Cement-Based Materials
p.74

Application of Ultrafine Fly Ash in Commercial Concrete
p.80

Ring Test for the Measurement of Restrained Shrinkage of Concrete
p.86

Prediction Model and Relationship of Compressive and Tensile Strengths for High Performance Concrete
p.92

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 377Performance of High-Efficiency Liquid Cement...

Performance of High-Efficiency Liquid Cement Setting Accelerator with Alkali-Free and its Acceleration Mechanism

Abstract:

A kind of non-alkali high efficiency liquid cement setting accelerator named ZJ-NSA was developed by regulating the chemical composition of polymerized aluminum sulfate in this paper. The results show that the initial setting time and the final setting time are sharply shortened to 2 minutes 48 seconds and 4 minutes 37 seconds respectively, and the 1 d-aged compressive strength reach to 8.6MPa when it is mixed into P.O42.5 Portland cement with 5% addition; meanwhile, its compressive strength and bending strength retention at the age of 1d and 28d reach to 79.63%, 81.89% and 78.13%, 97.89% respectively. Phase characteristics on the hydrated cement specimens by means of x-ray diffraction (XRD) and differential scanning calorimeter (DSC) were analyzed and the acceleration mechanism was discussed.

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Periodical:

Applied Mechanics and Materials (Volume 377)

Pages:

69-73

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.377.69

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Online since:

August 2013

Authors:

Yan Wang, Jun Wang, Shu Heng Qiu, Fei Gao, Rui Gu

Keywords:

Acceleration Mechanism, Compressive Strength, Setting Accelerator, Setting Time

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References

[1] L.K. Chen, in: Spray concrete, edtied by China Building Industry Press, Beijing (1990), pp.9-10 (in Chinese).

Google Scholar

[2] F.G. Li, Z.H. Pan, X.X. Fu, D.L. Zhou: Performance of high-efficiency liquid cement setting accelerator with low alkali and study on its acceleration mechanism, Mine Construction Technology Vol. 29(6)(2008), pp.18-20 (in Chinese).

Google Scholar

[3] P. Lu, in: Cement introduction to materials science, edtied by Tongji University press, Shanghai (1991), pp.18-20 (in Chinese).

Google Scholar

[4] J. Kim, J. Ryu, R.D. Hooton: Evaluation of strength and set behavior of mortar containing shotcrete set accelerators, Canadian Journal of Civil Engineering Vol. 35(4)(2008), pp.400-407 (in Chinese).

DOI: 10.1139/l07-115

Google Scholar

[5] Y. Kang, H.X. Li and X.T. Yu: Study on the conductive character of cement paste at early age and setting time relativity, Journal of Guangxi University (Natural science edition) Vol. 31(6)(2006), pp.173-176 (in Chinese).

Google Scholar