Improvement of clay brick masonry bonding using polyurethane foam mortars with blended cement

Iman Kattoof Harith; Ahmed Mousa Abdulhadi; Ali Majdi

doi:10.22712/susb.20230005

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General Article

Improvement of clay brick masonry bonding using polyurethane foam mortars with blended cement

31 March 2023. pp. 46-62

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Abstract

Masonry is a composite material generally used in construction. It displays numerous advantages, involving significant compressive strength, thermal inertia, and aesthetic beauty. Poor bond and low bond strength are major problems of brick masonry and this aspect is fundamental in seismic regions. In this study, the improvement of brick masonry bond and shear strength using polyurethane foam mortars with blended cement has been investigated. Toward this objective, fly ash class F and nano silica were utilized in mortars by 30% and 2%, as partial cement replacement respectively. The properties of components were performed, followed by compressive strength tests on polyurethane foam mortars. Moreover, a comparison of the behaviour of the polyurethane foam mortar prisms, triplets and couplets under compressive, shear and bond tests with respect to the reference cement mortar masonry was carried out. A significant increase in shear and bond strength was achieved by using polyurethane mortar reaching up to 79% and 160% respectively at 28-day for mortar made with polyurethane foam and 30% fly ash and 2% nano silica. Results provide indications on which polyurethane foam mortars have to be used for masonry buildings in regions that are subjected to seismic hazards.

Keywords

polyurethane mortar

bond strength

shear strength

triplets

couplets

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Information

Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
Publisher(Ko) :건설구조물 내구성혁신 연구센터
Journal Title :International Journal of Sustainable Building Technology and Urban Development
Volume : 14
No :1
Pages :46-62
Received Date : 2022-12-12
Accepted Date : 2023-01-16
DOI :https://doi.org/10.22712/susb.20230005

International Journal of Sustainable Building Technology and Urban Development ISSN:2093-761X(Print) 2093-7628(Online)

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