Effect of Different Curing on Mechanical Properties of Polymer - Cement Composites

Abstract:

The polymer-cement composites have special specifications, high strength compared to their low density, satisfactory deformability, deterioration resistance, tailored design. This enables the construction of new elements and the structural recovery of the existing parts made of traditional materials. two sets of mixtures were prepared that consist of mortar and polymer to produce the polymer-mortar composites were cured at room temperature and post-cure at 50 ͦ C. The set includes mortar (cement-sand) without water. The polymer was epoxy which is added to the mortar after mixing the hardener with resin. Set consists of the proportion of polymer (15, 20 and 30%).The effect of the polymer was studied on both sets by computing the density also measuring the hardness, compressive strength and flexural strength of specimens. The addition of polymer showed an improvement in these properties and post-cure have improvement properties .the lowest percent of the polymer showed The highest results were density 1133.3 kg/m3, the hardness of composites was 97.28 shore D. the compressive strength was about 100.816 MPa and the value of flexural strength was about 29.418 MPa.

• Periodical: Materials Science Forum (Volume 1002)
• Pages: 627-635
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1002.627
• Online since: July 2020
• Authors: Besma M. Fahad*, Baraa M. Matlik
• Keywords: Epoxy, Polymer-Cement, Post-Cure, Resin

References

[1] Ohama Yoshihiko, Handbook of polymer-modified concrete and mortars: properties and process technology, William Andrew, (1995).

[2] R.u. Wang, P.e.i. Ming Wang, L.i. Xin-Gui, Physical and mechanical properties of styrene–butadiene rubber emulsion modified cement mortars, Cement and concrete research, 35 (2005) 900-906.

DOI: 10.1016/j.cemconres.2004.07.012

[3] M. Khattab, Effect of gamma irradiation on polymer modified white sand cement mortar composites, Journal of Industrial and Engineering Chemistry, 20 ( 2014 ) 1-8.

DOI: 10.1016/j.jiec.2013.04.001

[4] L.K. P.C. Aggarwal, S.R. Thapliyal, Karade , Properties of polymer-modified mortars using epoxy and acrylic emulsions, Construction and Building Materials, 21 (2007) 379-83.

DOI: 10.1016/j.conbuildmat.2005.08.007

[5] B.M. Fahad, Effect of Unsaturated Polyester on Some Properties of Cement Mortar. Journal of Engineering and Sustainable Development. 21(3) (2017) 156-66.

[6] S. Papaioannou, R. Argyropoulou, C. Kalogiannidou, G. Melidis, L. Papadopoulou, I. Evelzaman, M .Argyropoulo, Mechanical and adhesion properties of polymer-modified cement mortars in relation with their microstructure, The Journal of Adhesion, 95 (2019) 126-45.

DOI: 10.1080/00218464.2017.1406348

[7] Iraqi Reference Guide indicative (198) and the Ministry of Planning / Central Agency for Standardization and Quality Control Manual 198/(1990).

[8] ASTM D2240 – 05, Standard Test Method for Rubber Property Durometer Hardness Book of Standards Volume: 09.01. (2010).

[9] ASTM C 109/C 109M , Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens), August (2008).

DOI: 10.1520/c0109_c0109m-20