Investigation of Mechanical and Physical Properties of No-Fines Concrete

Research Area: Volume 4,Issue 6, Nov. 2015 Year: 2015
Type of Publication: Article Keywords: Porous Concrete No-Fines Concrete, Compressive Strength, Porosity, Void Ratio, Permeability
Authors:
  • Amjad A. Yasin
Journal: IJEIR Volume: 4
Number: 6 Pages: 799-802
Month: November
Abstract:
The paper presents investigation on the mechanical and physical properties of no-fines aggregate concrete through laboratory testing. The concrete employ locally available coarser aggregates with no fine aggregates, where aggregate-to-aggregate bond is achieved through water-cement paste resulting in significantly lightweight concrete. Laboratory tests were conducted on twenty four standardcubes (150x150x150) mm, with different mix proportions to estimate the basic mechanical property i.e. compressive strength, and the physical properties including permeability, porosity and void ratio. The effect of water-cement ratio and aggregate-cement ratio is also investigated for essential optimization. It was found that the strength of no-fines concrete is lower than that of normal weight concrete and in the range of (0.8to8.0) MPa, but appears to be sufficiently enough for specialized construction works where compressive stress demand is not very high. A maximum measured value of permeability was 9.4m/hr. (2.6mm/sec). Porosity for the tested specimens was in the range of (10 to 17)%, and void ratio was measured in the range of (12 to 20) %.

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