4 research outputs found
Strength and Durability of Sand Cement Brick Containing Recycled Concrete Aggregate (RCA) and Waste Fired Clayed Brick (FCB) As Partial Sand Replacement Materials
The use of burnt clayed brick (FCB) and recycled coarse aggregate (RCA) in cementitious materials aids in the reuse of clay brick waste from construction and demolition works. In fact, concrete manufacturing expanded in lockstep with the Malaysian economy’s expansion. The purpose of this study is to determine the strength and durability of sand cement brick containing recycled concrete aggregate (RCA) and waste fired clayed brick (FCB) as partial sand replacement materials. According to the findings, a brick containing 0% RCA and 2% FCB has the best compressive strength, while a brick containing 15% RCA and 6% FCB has the lowest water absorption when compared to other mix designs and is the best mix design for water absorption. Lastly, it is steadily applicable the RCA and FCB as second sources of natural coarse aggregate and can reduce waste of concrete aggregate and FCB
Durability of coconut shell powder (CSP) concrete
The rising cost of construction in developing countries like Malaysia has led
concrete experts to explore alternative materials such as coconut shells which are renewable
and possess high potential to be used as construction material. Coconut shell powder in varying
percentages of1%, 3% and 5% was used as filler material in concrete grade 30 and evaluated
after a curing period of 7 days and 28days respectively. Compressive strength, water
absorption and carbonation tests were conducted to evaluate the strength and durability of CSP
concrete in comparison with normal concrete. The test results revealed that 1%, 3% and 5% of
CSP concrete achieved a compressive strength of 47.65MPa, 45.6MPa and 40.55%
respectively. The rate of water absorption of CSP concrete was recorded as 3.21%, 2.47%, and
2.73% for 1%, 3% and 5% of CSP concrete respectively. Although CSP contained a carbon
composition of 47%, the carbonation test showed that CSP no signs of carbon were detected
inside the concrete. To conclude, CSP offers great prospects as it demonstrated relatively high
durability as a construction material