The limestones are the most important rock groups as a source of aggregates since these rocks can easily found at most places (10 %-by volume-of the sedimentary rocks are of carbonates). These rocks have a variety of uses. The most important uses are in the cement industry, road construction, the building blocks and lime manufacturing industry. The silica ratio of the cement is strongly depend on the silica contents of the limestone used as aggregates [1]. On the other hand Alhozaimy [2] stated that the water absorption capacity of limestone aggregates strictly controls the cement resistance. The grain size of limestone aggregates used in cement also controls the development of cracks system in the produced cement [3]. The biggest drawback in the use of limestone as aggregate for all purposes is the weakness against acid, especially sulfuric acid which widely available in the nature [4]. The main aim of this study is to reveal that some
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.