Experimental Investigation on Mix Design and Mechanical Properties of Polymer (Latex) Modified Concrete

Abstract:

This paper presents the experimental investigation to enhance the mechanical properties of Polymer Modified Concrete (PMC) incorporating Styrene Butadiene Rubber (SBR) and describes the potential of using PMC as a structural material. PMC has been used for many years as an over layer in the bridges deck or for the repairing the defected concrete structures subjected to marine environment. But, because of low compressive strength due to foaming phenomenon, PMC has not been considered as a structural concrete. In this study, a range of investigations including sensitivity of PMC to water cement ratio, the effect of SBR proportion on compressive strength and modulus of rupture, selection of the proper antifoaming agent, the effect of various curing methods on compressive strength, proper mix design of PMC to achieve medium to high compressive strength are carried out. Also, the instructions for casting PMC are composed which can be stated as a standard for mixing and curing procedure of PMC. Results show that increasing the proportion of latex in PMC causes the strength reduction. But, using appropriate antifoaming agent (defoamer) and proper curing method, the mechanical properties can be recovered remarkably.

• Periodical: Advanced Materials Research (Volume 687)
• Pages: 112-117
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.687.112
• Online since: April 2013
• Authors: Farhad Nabavi, Shami Nejadi, Bijan Samali
• Keywords: Antifoaming Agent, Latex Modified Concrete, Polymer Modified Concrete, Polymer-Concrete Composites

References

[1] Su, Z., J.M.J.M. Bijen, and J.A. Larbi, The influence of polymer modification on the adhesion of cement pastes to aggregates, Cement and Concrete Research. 21(1991) 727-736.

DOI: 10.1016/0008-8846(91)90167-g

[2] Çolak, A., Properties of plain and latex modified Portland cement pastes and concretes with and without superplasticizer, Cement and Concrete Research. 35(2005) 1510-1521.

DOI: 10.1016/j.cemconres.2004.11.012

[3] Fowler, D.W., Polymers in concrete: a vision for the 21st century, Cement and Concrete Composites. 21(1999) 449-452.

DOI: 10.1016/s0958-9465(99)00032-3

[4] Barluenga, G. , F. Hernández-Olivares, SBR latex modified mortar rheology and mechanical behaviour, Cement and Concrete Research. 34(2004) 527-535.

DOI: 10.1016/j.cemconres.2003.09.006

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

DOI: 10.1016/j.cemconres.2006.05.020

[6] Ohama, Y., et al., Pore size distribution and oxygen diffusion resistance of polymer-modified mortars, Cement and Concrete Research. 21(1991) 309-315.

DOI: 10.1016/0008-8846(91)90012-7

[7] Ohama, Y., Polymer-based admixtures, Cement and Concrete Composites. 20(1998) 189-212.

DOI: 10.1016/s0958-9465(97)00065-6

[8] Ohama, Y., Recent progress in concrete-polymer composites, Advanced Cement Based Materials. 5(1997) 31-40.

DOI: 10.1016/s1065-7355(96)00005-3

[9] Wu, K.R., D. Zhang, and J.M. Song, Properties of polymer-modified cement mortar using pre-enveloping method, Cement and Concrete Research. 32(2002) 425-429.

DOI: 10.1016/s0008-8846(01)00697-4

[10] Lewis, W.J. and G. Lewis, The influence of polymer latex modifiers on the properties of concrete, Composites. 21(1990) 487-494.

DOI: 10.1016/0010-4361(90)90421-r