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Comparative analysis of strength characteristics of concrete produced from different coarse aggregates sourced in Aba, Abia state

 Department: Building Technology  
 By: usericon samadchuks  

 Project ID: 5532
   Rating:  (3.3) votes: 6
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This study is aimed at establishing the qualities of coarse aggregate sourced within Aba Abia State. Primary and secondary data were used for this study. Samples from the laboratory experiment were obtained from quarry sites at Owerrinta and Umunneochi. Sieve analysis, Slump test and Cube (crushing strength) were performed using each of the samples. The study observed that the crushing strength and/or compressive strength of the samples at 7 day are between 20-29N/mm2'' with Umunneochi samples having the highest compressive strength of 31.70N/mm2. Thus, at 7 days, the two samples tested have attained the minimum strength of concrete (i.e. 13N/mm2''). For workability test, the GF study observed that the percentage of slump for the samples ranges from 21.5– 41%. For sieve analysis, the researchers observed that the samples were fairly graded. The percentage of the grains passing through 12mm diameters is between 64.3– 84.0%. The study ended with the following recommendations that coarse aggregate should be properly graded using machines rather than hand breaking. Also coarse aggregate should be properly washed before using them since most of them are coated with impurities and other clayey substances and mud which may interfere with the process of bonding. ...
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