ANALYSIS AND COMPARISON OF STRENGTHS AND WORKABILITY OF VIRGIN AND RECYCLED CONCRETE CUBES
Gana A.J& Oladapo E.P.
Department 0f Civil Engineering, Collage of Science and Engineering
Landmark University, Omu-Aran, Kwara state
Emails: doctorgana@yahoo.com, phildebo123@gmail.com
ABSTRACT
This study access the reduction and use of rubble concrete cubes from concrete laboratories, to ensure sustainability which is environmental friendly by concrete recycling which involves the comparison of the strength and workability of virgin and the recycled concrete. Data from developed countries have been obtained and all over developing countries but this report examine the data from North central region of Nigeria specifically Omu Aran, head quarter of Irepodun local government area, Kwara state, Nigeria. Both constructive and destructive tests such as cubes crushing test and Schmidt hammer test are carried out. The slump value for virgin concrete is 280mm and for recycled concrete is 285mm. partially compacted virgin concrete is 11.3kg, fully compacted virgin concrete is 12.5kg and partially compacted recycled concrete is 11.0kg, fully compacted recycled concrete is 12.3kg. Result shows that recycled concrete possess more compressive strength compared to virgin concrete and both are workable as recycled concrete consumes more water to attain desired workability. This study is limited to compressive strength, recommendation for further research is required on the comparison of the flexural strength and workability of virgin and the recycled concrete.
Keywords: Strength, workability, virgin, recycled, concrete, cubes.
