Development of Self Compacting Concrete Using Industrial Waste As Mineral And Chemical Additives
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 5
Abstract
This paper reports a research that investigated the application of industrial waste materials as mineral and chemical additives in the production of Self Compacting Concrete. The flow characteristics of the Self Compacting Concrete investigated were flowability, passing ability and segregation resistance in slump flow test, V-funnel test, L-box test and J-ring test. Pulverized fuel ash, carbide waste and quarry dust were used in concrete production. Compressive strength test was conducted on the hardened concrete after 28 days curing. Concrete mix ratio of 1:2:4 ( Cement : Sand : Gravel ) was used to produce concrete, using cement partially replaced with 5%, 10%, 15% and 20% pulverized fuel ash, carbide waste and quarry dust. Superplasticizer (Conplast SP 430) used in the mix was kept constant throughout the mixes at 1% of the total volume while water cement ratio of 0.45 was maintained in all mixes. Results of tests shows that the fresh Self Compacting Concrete produced with cement partially replaced with pulverized fuel ash, carbide waste, quarry dust and a combination of pulverized fuel ash and quarry dust satisfied requirements specified for Self Compacting Concrete. Flow ability, passing ability and resistance to segregation increase with pulverized fuel ash, carbide waste and quarry dust content. 28 day compressive strength of self-compacting concrete produced with only cement increased from 31.8 𝑁/𝑚𝑚2 to 37.6 𝑁/𝑚𝑚2 , 35.1 𝑁/𝑚𝑚2 and 43.5 𝑁/𝑚𝑚2 when cement was partially replaced with 20% pulverized fuel ash and a combination of 15% pulverized fuel ash and 15% quarry dust respectively. However, 28-day compressive strength decreased to 18.6 𝑁/𝑚𝑚2 when cement was partially replaced with 20% carbide waste. Optimum 28 day compressive strength value was obtained when cement was replaced with 15% pulverized fuel ash plus 15% quarry dust. Regression analysis was computed on the data obtained from the slump flow test, J ring test, V funnel test and V funnel test using Microsoft Excel software to obtain regression equations for the filling ability, passing ability and segregation resistance.
Authors and Affiliations
Onuegbu. O. Ugwu, C. U. Nwoji, Michael E. Onyia, Atom Gber, Thaddeus T. Tarzomon, Ogbo E. Happiness
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