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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Zainab Aamer Shamsulddin1 and Rafaa Zair Jassim2
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DOI:10.17265/1934-7359/2016.11.006
Affiliation(s)
1. College of Engineering, Al-Iraqia University, Baghdad 10001, Iraq
2. Iraq Geological Survey (retired), Baghdad 10001, Iraq
ABSTRACT
The main purpose of this
research is to study the properties of re-use different types of construction
materials such as PVC (polyvinylchloride) scraps, clay brick and recycled concrete as a partial
replacement of coarse aggregate. Different proportions (1%, 3%, 5% and 7%) by weight were used for PVC. scrap, (10%, 20%, 30%, and 40%) by weight were used for recycled
concrete and (5%, 10%, 15%, and 20%) by weight were used for clay brick.
Mechanical tests such as compressive and tensile strength tests and physical
tests such as ultrasonic pulse velocity, bulk density, porosity, specific
gravity and water absorption tests were done to the samples after curing in
normal water for 28 days. Test results showed slightly degradation in
mechanical and physical engineering properties of concrete specimens that used
partial replacement of recycled concrete coarse aggregate, degradation
increased with increasing of replacement but test results still closely to
reference samples. Use of polyvinyl chloride in proportions not more than 5% as
a partial replacement of coarse aggregates given acceptable results in
comparison with reference samples but all test results degraded at 7%
replacements. Test results of partial replacement of crushed brick coarse
aggregates unacceptable and the range of degradation are wide because of
increased (water: cement)
ratio to improve the concrete workability.
KEYWORDS
Recycled concrete, PVC. chips, clay brick, environment benefits, coarse aggregate replacements.
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