Influences of Mixing Procedure on Properties of Fresh Latex Modified Cement Paste(I)

Abstract:

Article Preview

In this study, influences of mixing procedure on the latex adsorption behavior, slurry fluidity and setting time of latex modified cement paste (LMCP) mixed with polycarboxylate (PC) as superplasticizer were analyzed. There were three kinds of mixing procedure: LMCP added latex later than PC (LMCP-L), LMCP added latex before PC (LMCP-B), LMCP added latex and PC simultaneously (LMCP-S). The results show that, the adsorption isotherm of SAE latex by cement grains fits the Langmiur type, and the presence of PC can affect the adsorption behavior. Regardless of the mlatex/mcement (4% or10%), LMCP-B had the highest amount of adsorbed latex and slurry fluidity while LMCP-L had the lowest. And, the LMCP-B also had the longest initial and final setting times, while the setting times of LMCP-L and LMCP-S were comparable.

Info:

Periodical:

Edited by:

Wong Sook Fun, Tan Kang Hai and Ong Khim Chye Gary

Pages:

530-537

Citation:

D. D. Han et al., "Influences of Mixing Procedure on Properties of Fresh Latex Modified Cement Paste(I)", Advanced Materials Research, Vol. 1129, pp. 530-537, 2015

Online since:

November 2015

Export:

Price:

$41.00

* - Corresponding Author

[1] Y. Ohama, Polymer-based Admixtures, J. Cement and Concrete Composites. (1998) 189-212.

DOI: https://doi.org/10.1016/s0958-9465(97)00065-6

[2] J. Li, S. Zhong, C. Zhang, Influence of superplasticizer and mixing procedure on properties of styrene-acrylic ester latex modified mortars, J. Magazine of Concrete Research. 64(2012)411-417.

DOI: https://doi.org/10.1680/macr.10.00170

[3] S. Zhong, J. Li, K. Ni, D. Han, Influences of HPMC on adsorption of styrene-acrylic ester latex particles on cement grains, J. Construction and Building Materials. 38 (2013)567-574.

DOI: https://doi.org/10.1016/j.conbuildmat.2012.08.051

[4] Sakai E, Okudaira R, Sugiyama T, et al, Adsorption of polymer particles on cement in polymer modified cement,C. In: Kyu-Seok Yeon, eds. Proceedings of 12th International Congress on Polymers in Concrete. Korea. (2007)233-238.

[5] J. Plank, M. Gretz, Study on the interaction between anionic and cationic latex particles and Portland cement, J. Colloids and Surfaces A: Physicochemical. Engineering Aspects. 330(2008)227-233.

DOI: https://doi.org/10.1016/j.colsurfa.2008.08.005

[6] J. Li, Influence of Polymer Adsprption on properties and structure of modified cement-based material,D. Shanghai: Tongji University. (2012)30-37.

[7] S. Zhong, J. Li, D. Han, etal, Influence of superplasticizer and latex on zeta potential of cement pastes, J. Journal of Building Materials. 16(2013)106-110.

[8] R. Wang, X. Li, P. Wang, Influence of polymer on cement hydration in SBR-modified cement pastes, J. Cement and Concrete Research. 36(2006) 1744-1751.

DOI: https://doi.org/10.1016/j.cemconres.2006.05.020

[9] D. Han, J. Li, W. Chen and S. Zhong, Influences of superplasticizer on the interaction between latex particles and cement grain, C. International Congress on Polymers in Concrete, Shanghai, China. (2013)335-340.

[10] A. Dimmig-Osburg, Microstructure of PCC-Effects of Polymer Components and Additives,C. Proceedings of 12th International Congress on Polymers in Concrete, Chuncheon, Korea. (2007)239-247.

[11] A. Dimmig-Osburg, I. Pietsch, J. Pakusch, Polymer additives and their influence on the cement microstructure in the early stages of hardening, J. ZKG International. 59 (2006) 72 - 83.