Abstract
This paper provides a summary of strength properties of basalt fibre reinforced concrete. It contains short discrete fibres that uniformly distributed and randomly oriented. Basalt fibres are in increasing demand as they improve the tensile resistance and ductile performance of plain concrete, thus reducing cracking and leading to improve durability of reinforced concrete structure. The main objective is to investigate the mechanical properties of basalt fibre reinforced concrete containing met kaolin as partial replacement of cement. The fibres were placed in concrete by 0.3%, 0.4% and 0.5% of its total volume of concrete, for each mix 10% of cement is replaced by met kaolin. Three sets of cubes, cylinders and prisms for each mix of M20 grade concrete were casted and tested after 28 days of curing. Experimental results showed that the addition of basalt fibres up to 0.4% fibre volume together with mineral admixtures improved the strength properties of concrete.
Highlights
The amount of fibres added to a concrete mix is expressed as a percentage of the total volume of composite termed "volume fraction" ranges from 0.1 to 3%
This paper provides a summary of strength properties of basalt fibre reinforced concrete
The main objective is to investigate the mechanical properties of basalt fibre reinforced concrete containing met kaolin as partial replacement of cement
Summary
The amount of fibres added to a concrete mix is expressed as a percentage of the total volume of composite termed "volume fraction" ranges from 0.1 to 3%. The aspect ratio (l/d) is calculated by dividing fibre length by its diameter. Fibres with a non-circular cross section use an equivalent diameter for the calculation of aspect ratio. If the fibre's modulus of elasticity is higher than the matrix, they help to carry the load by increasing the tensile strength of the material. Increasing the aspect ratio of the fibre usually segments the flexural strength and toughness of the matrix. Fibres that are too long tend to ball in the mix and create workability problems. Glass, basalt, polypropylene, nylon etc are used to improve the properties of concrete
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