Strength of Reactive Powder-Ferrocement Slabs under Static Load

Authors

  • Mazin B. Abdulrahman
  • Alyaa A. Al-Attar
  • Muyasser M. Jomaa'h

Abstract

This research aims to investigate experimentally the structural response of ferrocement slabs made with modified reactive powder concrete subjected to concentrated loading. The experimental work consist of casting and testing twelve ferrocement slabs of dimensions (500*500*50) mm made with reactive powder concrete (contains Fly Ash as pozzolanic material) to enhance the strength of the ferrocement slabs. The parametric study adopted in this work includes using of three volumetric percentage ratio (0% , 0.5% and 1%) and the two number of wire mesh layers (2 and 4) as well as two fly ash ratios (0% and 10%). For the different RPC mixes, three cubes (70 mm) and three prisms (40*40*160)mm were cast and tested to determine the compressive strength and modulus of rupture. The comparisons between all specimens are based on first crack load, ultimate load carrying capacity, deflection, crack pattern and mode of failures.

Results showed that the steel fibers, wire meshes and fly ash have a significant effect on the strength capacity of the tested slabs. The minimum slab strength is equal to (12.2 kN) with steel fibers ratio, wire steel mesh layer and fly ash ratio equal to ( 0%, 2 and 0%) respectively , while the maximum slab strength is equal to (45.9kN) with steel fibers ratio, wire steel mesh layer and fly ash ratio equal to (1%, 4 and 10%) respectively. 

Generally, the effect of steel fibers and wire meshes is increased in the presence of fly ash which enhance of the bond between the steel reinforcement (steel fibers and wire meshes) then increase its contribution of slab strength.

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Published

2020-01-07

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Articles