Deformability of Mortars Incorporating Polyurethane Foam Waste under Cyclic Compression Fatigue Tests

Abstract:

An experimental analysis is performed on the fatigue behaviour of composite specimens made with Portland cement, sand, water, and polyurethane foam wastes. Different mixtures were firstly prepared through the substitution of different amounts of sand by equivalent volumes of polyurethane. The test pieces underwent cyclic compression tests, to study the deformability of different strengths of mortars under fatigue. A total of 2,000 cycles of loading and unloading, estimated at between 55% and 65% of the breakage load were applied to each specimen. The experimental results indicate that the elastic properties of the polyurethane mortars remained practically constant in comparison with the standard mortar samples. In addition, a comparative study of the mechanical properties of these mortars was conducted before and after each fatigue test. Their compressive strength showed no reduction in ultimate compressive resistance, indicating good resistance to fatigue.

• Periodical: Advanced Materials Research (Volume 1129)
• Pages: 477-483
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1129.477
• Online since: November 2015
• Authors: C. Junco, A. Rodríguez, J. Gadea, V. Calderón
• Keywords: Cyclic Compression Test, Deformation, Fatigue, Polyurethane Mortar

References

[1] C. Junco, J. Gadea, A. Rodríguez, S. Gutiérrez-González, V. Calderón. Durability of lightweight masonry mortars made with white recycled polyurethane foam. Cem Concr Compos 2012; 34: 1174–1179.

DOI: 10.1016/j.cemconcomp.2012.07.006

[2] S. Gutiérrez-González, J. Gadea, A. Rodríguez, C. Junco, V. Calderón. Lightweight plaster materials with enhanced thermal properties made with polyurethane foam wastes. Constr Build Mater 2012; 28: 653–658.

DOI: 10.1016/j.conbuildmat.2011.10.055

[3] Y. Ohama. Concrete polymer composites. The past, present and future. Proceedings of the 13th International Congress on Polymers in Concrete (ICPIC 2010), In Madeira, Portugal.

[4] EN 197-1. Cement composition, specification and conformity criteria. Part 1. Common cements; (2011).

[5] EN 13139. Aggregates for mortar; (2003).

[6] EN 1015-3. Methods of test for mortar for masonry. Part 3. Determination of consistence of fresh mortar (by flow table); (1999).

DOI: 10.3403/01541440

[7] EN 1015-2. Methods of test for mortar for masonry. Bulk sampling of mortars and preparation of test mortars. (1999).

DOI: 10.3403/01541476

[8] EN 196-1. Methods of testing cement. Determination of strength. (2005).

[9] EN 1015-11. Methods of test for mortar for masonry. Part 11. Determination of flexural and compressive strength of hardened mortar; (2000).

DOI: 10.3403/01905442

[10] EN 998-1. Specification for mortar for masonry. Rendering and plastering mortar; (2010).

DOI: 10.3403/30291085

[11] EN 998-2. Specification for mortar for masonry. Masonry mortar; (2010).