Abstract
No-fine concrete (NFC) is cellular concrete and it’s light weight concrete produced with the exclusion of sand from the concrete. This study includes the mechanical properties of lightweight reinforced by steel fiber, containing different proportions of steel fiber. This study was done using number of tests. These tests were density, compressive strength, flexural strength and absorption. These tests of the molds at different curing time. The results of tests that implication of fiber to No. fine concrete did not affect significantly on the compressive strength, While the flexural strength were gets better. Results explained that, the flexural strength of (1%) fiber No- fine concrete molds are four times that of the reference molds in age 28 days. The growing in flexural strength for fiber reinforced mixes with fiber by vol. (0.5%, 0.75%, 1%) were (78%, 132%, 286%) respectively at age of 28 days.
Highlights
IntroductionASTM C330 2017 this covers light weight aggregate intended for use in structure concrete in which prime considerations are reducing the density while maintaining the compressive strength of the concrete
Density: Results show that the reference concrete mixes without fiber have lower density than fiber reinforced concrete mixes containing (1%) steel fiber because addition steel fiber to concrete
The ratio increase in density for steel mixes with fiber by volume (0.5%, 0.75%, 1%) were (0.5%, 1%, 1.25%) respectively at age 28 days
Summary
ASTM C330 2017 this covers light weight aggregate intended for use in structure concrete in which prime considerations are reducing the density while maintaining the compressive strength of the concrete. Procedures covered in this specification are not intended for job control of concrete. Light weight aggregate shall be tested, and should not contain excessive amounts of deleterious substances, and should conform to the specified values of organic impurities, aggregate staining, aggregate loss of ignition, clay lumps and friable particles, loose bulk density, compressive strength, drying shrinkage, and resistance to freezing and thawing. No-fine concrete are low cost materials, somewhat higher thermal insulating values, lower shrinkage and lower unit weight. Low cost because of low cement, high insulation of no fine
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