Abstract
This work focuses on the 100% replacement of river sand with quarry dust in the production of concrete. Two types of concrete were produced (concrete made with river sand and that made with quarry dust as fine aggregate), the concretes produces were cast into beams and cured for 28 days. The flexural strengths of the concrete beams cast was determine at 28 day strength. At 28 days target strength the maximum flexural strength of concrete made with river sand as fine aggregate is 5.375111N/mm2 and minimum flexural strength is 2.2155N/mm2, for the concrete made with quarry dust as fine aggregate the maximum flexural strength is 2.567 N/mm2. The maximum value of 2.567 N/mm2 for concrete made with quarry dust as fine aggregate is higher than the minimum value of 2.2155N/mm2 for concrete made with river sand as fine aggregate. With this result it shows that quarry dust is a good substitute to river sand in the production of concrete.
Highlights
In recent times African countries especially Nigeria has embarked on massive infrastructural development which involves construction of highways, airport runways, parking lots and playgrounds
The maximum value of 2.567 N/mm[2] for concrete made with quarry dust as fine aggregate is higher than the minimum value of 2.2155N/mm[2] for concrete made with river sand as fine aggregate
The maximum compressive strength is 5.375N/mm[2] at w/c of 0.55 for concrete made with river sand and the maximum compressive strength is 2.57 N/mm[2] at w/c of 0.55 for concrete made with quarry dust as fine aggregate
Summary
In recent times African countries especially Nigeria has embarked on massive infrastructural development which involves construction of highways, airport runways, parking lots and playgrounds. All these aforementioned structures cannot be constructed without taken into consideration their flexural strengths which is the value of their resistant to failure in bending, and a measure of their resistance to deformation under a given load ( Kala 2013). Quarry dust which is a waste material in the quarry industries was used here to replace river sand completely in the production of concrete; Http://www.granthaalayah.com ©International Journal of Research - GRANTHAALAYAH [453]. Comparison is made here between concrete made with river sand and that made with quarry dust based on their flexural strengths
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