Effect of Polypropylene Fibers on Properties of Mortar Containing Crushed Brick as Aggregate
Engineering and Technology Journal,
2008, Volume 26, Issue 12, Pages 1508-1523
AbstractMore recently there has been a great attention towards converting waste
materials by- products into useful materials as aggregate in concrete industry.
It is thus aimed in this study to investigate the possibility of using waste brick
as suitable materials and alternative to the natural aggregate in the production
of lightweight mortar.
The essential objective of this work is to study the mechanical properties of
lightweight mortar containing different percentages of polypropylene fiber
with high range water reducing agent. The effective synergy of this admixture
on the properties of mortars is also investigated. Compressive strength,
splitting tensile strength, thermal conductivity and drying shrinkage tests were
conducted on reference and polypropylene fiber reinforced mortar specimens
at various ages of curing (7, 14, 28, 60 and 90 days) respectively.
The results show a significant increasing in splitting tensile strength with
the increment of fibers content. Although, a considerable reduction in
workability is recorded as increasing the fiber content. Which is controlled by
using high range water reducing admixture. All mixes show acceptable values
for thermal insulation with regards to ACI 213-87 thermal insulation
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