Improving elastic properties of bricks by polyurethane matrices mean

[摘要] The usage of polyurethane was considered in order to obtain an innovative brick (polyurethane brick) for the envelope of reinforced concrete frame structures and also for partition walls. The following properties were studied: self-weight, compression strength and bending strength. In order to increase its mechanical properties, polyurethane materials can be reinforced with recycled or organic materials, reducing costs in this manner (crashed glass, straw, chopped rubber). Using these innovative infill materials, the heating costs are reduced and the execution time is decrease. The polyurethane bricks are easily adapted to any climatic condition and allow water vapour transfer from inside to the exterior side of the masonry, preventing condensation. Compressive strength, flexural strength and split tensile strength were experimentally determined. From the laboratory results it was observed that an increase of 32.6% occurred for the compressive strength for the sample with glass pieces. Overall improvements of the mechanical properties were noticed for the samples with smeared reinforcement.

[发布机构] Gheorghe Asachi Technical University of Jassy, Faculty of Civil Engineering, Building Services, Department of Structural Mechanics, Str. Prof. Dr. Doc.Dimitrie Mangeron, nr. 1, 700050, Romania^1;Gheorghe Asachi Technical University of Jassy, Faculty of Civil Eng., Building Services, Department of Concrete Structures, Building Materials, Technology and Management, Str. Prof. Dr. Doc.Dimitrie Mangeron, nr. 1, 700050, Romania^2;Gheorghe Asachi Technical University of Jassy, Faculty of Chemical Engineering and Environmental Protection, Department of Chemical Engineering, Str. Prof. Dr. Doc.Dimitrie Mangeron, nr. 73, 700050, Romania^3

[学科分类] 土木及结构工程学

[关键词] Climatic conditions;Compression strength;Elastic properties;Infill materials;Organic materials;Polyurethane materials;Reinforced concrete frame structures;Smeared reinforcements