Concrete is a material that is still used in construction. Continued until current, which consists of fine aggregate concrete, cement or sand, coarse aggregate, limestone (water and admixtures. Because of the concrete used in the construction for a long time, to make the old structure. Built with concrete and some degeneration was torn down. Withdraw to create a new waste from the demolition of structures. Concrete such as many garbage such need space to leave as many as well. If you can bring back the old concrete utilization by such leadership. To digest the coarse aggregates obtained from digestion scrap concrete This old used in concrete again, also can reduce the area of the garbage คอนกรีตแล้ว"s conservation. Source of coarse aggregate to use natural how long, however, before the introduction of coarse aggregates obtained from digestion. Old scrap concrete used in concrete again, must have to check the properties of aggregates ดังกล่าวให้ through standard aggregate is suitable for use as a concrete mixture before.
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