AWAM International Conference on Civil Engineering 2019 (AICCE'19) - Nibong Tebal - Malaysia (2019-08-21)

Economic Construction After Disasters by Using Recycled Aggregate Concrete
This paper aims at finding economic methods to reconstruct the destroyed cities after disasters and reduce the cost of reconstruction material in Iraq. One of these methods is the use of recycled fine aggregate (RFA) or (FRA) instead of natural fine aggregate (NFA). Recycled aggregate concrete is resulting from many of the buildings destroyed as a result of natural or man-made disasters. The methodology of this research includes two parts, the first part includes the theoretical aspect where the data was collected about (RFA), especially the physical and mechanical properties, collected the information about the cost of building material in Iraq, and the information about the types and cost of stone crusher. Selected the best concrete mix containing (RFA), that its physical and mechanical properties are better or closer to normal mix properties. The second part of the research includes the practical side using the building information modeling (BIM) technique. A small destroyed city was modeled and it included various models of buildings. The amount of concrete used in ceiling and beams construction was calculated, extracting the volume of fine aggregate and its cost in the case of normal construction, and calculation of cost in the case of the use (RFA) instead of (NFA), which is processed at the work site by a stone crusher can reduce the cost of building materials. The conclusions from this study is the total cost required for the purchase of building materials that used for the construction of ceilings and beams only can be reduced by 18.38%.
Mrs. Zahraa Ali