MECHANICAL PROPERTIES OF CONCRETE CONTAINING RECYCLED CONCRETE AGGREGATES SUBJECTED TO DIFFERENT FIRE DURATIONS | ||||
JES. Journal of Engineering Sciences | ||||
Article 5, Volume 39, No 5, September and October 2011, Page 1005-1019 PDF (202.04 K) | ||||
Document Type: Research Paper | ||||
DOI: 10.21608/jesaun.2011.129380 | ||||
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Authors | ||||
Walid Safwat Fahmy1; Erfan Abdel-Latif Heneidy2; Esraa Emam Ali3; Ibrahim Saad Mohammed Agwa4 | ||||
1Faculty of petroleum Engineering and Mining, Suez Canal University, Suez, EGYPT. | ||||
2Civil Engineering Dept., Faculty of Engineering, Suez Canal University, Ismailia, EGYPT | ||||
3Material Dept., Housing and Building National Research Center-Dokki- Cairo, EGYPT | ||||
4Civil Structures Dept., Faculty of Industrial Education, Suez Canal Univ., Suez, EGYPT. | ||||
Abstract | ||||
The amount of construction and demolition waste has increased considerably over the last few years. Crushing concrete to produce coarse aggregate for the production of new concrete is one common means for achieving a more environment-friendly concrete. This experimental study demonstrates the mechanical properties of concrete containing recycled concrete aggregate (RCA) subjected to different fire durations. In the experimental work, the fresh concrete properties (slump < br />test) and the hardened concrete properties, (compressive strength, splitting tensile strength, flexural strength and modulus of elasticity) were carried out. A total of thirty concrete mixes with different cement contents (300, 350, and 400 Kg/m3) at w/c ratio (0.5) were made and the percentage of substitution of natural concrete coarse aggregate by the recycled concrete coarse aggregate subjected to fire durations (1,2 and 3 hours) at fire temperature (600ºC) was (0%, 25%, 50% and 100%). In the process of mixing, equal consistence among all concrete mixes was achieved. The obtained results indicate that the recycled coarse aggregate subjected to fire can successfully be used for making structural concrete. | ||||
Keywords | ||||
Recycled concrete aggregate; fire duration; Compressive strength. Tensile strength; Flexural strength and Modulus of elasticity | ||||
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