Abstract
The article deals with lightweight concrete with non-conventional reinforcement and its application in thin-walled structures. As part of experimental research, several sets of thin-walled slab and complementary specimen were made to determine the material characteristics of lightweight concrete. The porous aggregate Liapor was used in the recipe. Two-dimensional carbon and 3D glass textiles were used as reinforcement. The impact study of different casting technologies and recipe on the material characteristics of lightweight concrete was included in the research. Fresh concrete for the slab production was placed in special wooden molds. The slabs were concreted in vertical and horizontal position. The casting method has a significant impact on the element material characteristics. Reinforced specimens have shown high strength, even in thin-walled structures with low bulk density.
Highlights
At present, the demand for concrete with special characteristics is growing
To compare textile reinforced lightweight concrete (TRLC) specimen behaviour, several reinforced and non-reinforced slabs and accompanying test specimens were produced to determine the strength characteristics of composite according to the standard. 2D carbon and 3D glass meshes were used for slab reinforcing (Figure 2)
Replacing natural aggregate by porous aggregate is one of the ways to reduce the weight of the concrete element
Summary
The demand for concrete with special characteristics is growing. physical-mechanical and aesthetical characteristics are desired. The structure can be efficiently lightened by reducing the concrete matrix weight itself. This can be realized by partial or full replacement of the natural aggregate by a porous aggregate. As compared with standard concrete reinforcement, offer an interesting alternative in making complex and thinner structures with a high load bearing capacity. Research on LC with special reinforcement, which takes place at the Faculty of Civil Engineering of the CTU in Prague, deals with the possibilities of applications, technologies and material characteristics of TRLC. Lightweight concrete is classified as a concrete with a dry bulk density of more than 800 kg/m3 and less than 2,000 kg/m3
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