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Title |
Effect of Volume Fraction of Fibers on the Mechanical Properties of a Lightweight Aggregate Concrete Reinforced with Polypropylene Fibers
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Keywords |
lightweight aggregate concrete ; foam agent ; optimal volume fraction of fibers ; compressive strength and flexural strength tests ; fiber reinforcing effect |
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Abstract |
This paper presents results of an experimental study conducted to investigate the effect of volume fraction of fibers on the mechanical properties of a fiber-reinforced, lightweight aggregate concrete(FRLAC) that was produced without an autoclave process. The FRLAC enhanced the strength of lightweight, cellular concrete by adding polypropylene fibers and lightweight aggregates. To investigate the effect of volume fraction of fibers on the mechanical behavior of FRLAC and to determine the optimal volume fraction of fibers, a series of compression and flexural strength tests on FRLAC and to determine the optimal volume fraction of fibers, a series of compression and flexural strength tests on FRLAC specimens with various fiber volume fractions(0%, 0.10%, 0.25%, 0.50%) were conducted. It was observed from the tests that a 0.25% volume fraction of fibers maximized the increase in the strength of FRLAC and fibers controlled cracking in FRLAC.
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