| Summary: | Concrete structure is made up of cement, aggregate and water. In building
construction the aggregates commonly used are limestone and granite. Three
quarters of concrete is made up from aggregate, thus the selection of aggregate
should be in the prime condition. To produce a good, strength and high quality
concrete the materials used should be in accordance to standard specification.
JKR standard specification for building works mentioned that the use of limestone
is limited to super structure only whereas for substructure granite aggregate
should be used. Due to this problem statement this study is carried out to
investigate whether chemical attack in limestone aggregate is the source of
problem for sub structure (concrete structure below ground level). This study
involved in testing of limestone and granite aggregates. The scope of study
includes the investigation on the strength, bonding and chemical attack in the
concrete. The main objective of the research is to study the properties of lime
stone related to strength and its performances. The method of study to be carried
out is through the appropriate test. The types of testing required are sieve analysis,
flaky and elongation index test, cube test and aggregate crushing value test. All
the tests have been carried out and the results had been recorded in appropriate
table and graph. Discussion on the analysis of the results is explained to provide
more information about the effect of chemical and the behavior of concrete
properties. Lastly the conclusion had been done and one recommendation had
been introduced for future work.
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