Hydrochloric Acid Aggression in Groundnut Shell Ash (GSA)-Rice Husk Ash (RHA) Modified Concrete
Journal Title: Scholars Journal of Engineering and Technology - Year 2015, Vol 3, Issue 2
Abstract
This paper presents the findings of an investigation on the resistance of Groundnut Shell Ash (GSA)-Rice Husk Ash (RHA) modified concrete to hydrochloric acid aggression and a regression model of the concrete resistance to hydrochloric acid environment. The GSA and RHA used were obtained by controlled burning of groundnut shell and rice husk, respectively in a kiln to a temperature of 600 oC, and after allowing cooling, sieved through sieve 75 µm and characterized. A total of fifteen 100 mm cubes of GSA-RHA-Concrete grade 20 mixes at replacement levels of 0, 10, 20, 30 and 40 %, respectively by weight of cement were cast, cured in water for 28 days and exposed to attack from 10 % concentration of diluted solution of hydrochloric acid (HCl) and the concrete resistance was also modeled using Minitab statistical software to establish regression model. The results of the investigations showed that the resistance of OPC concrete against HCl aggression was better than that of blended GSA-RHA concrete. The weight loss of OPC concrete after 28 days of exposure was 18.5 % as opposed to an average loss of 36.8 % for GSA-RHA concrete. The regression model of GSA-RHA-Concrete resistance against hydrochloric acid was developed with R2 value of 0.683 and was adequate for prediction of the sensitivities of pozzolanic activity of GSA-RHA in hydrochloric acid environment.. Keywords: Concrete, GSA-RHA, Hydrochloric acid, Model, Resistance
Authors and Affiliations
Egbe-Ngu Ntui Ogork, Okorie Austine Uche, Augustine Uche Elinwa
Keywords
Related Articles
- EP ID EP384691
- DOI -
- Views 89
- Downloads 0
The Application of the Art Design Method in the Appearance Improved of Pumping Unit
The appearance of the pumping unit was improved by the industrial design methods in the paper, so it belongs to the combination of the petroleum machinery and industrial design field The appearance of the pumping unit wa...
Application of Particle Swam Optimization (PSO) in Oil and Gas Pipeline under Spatially Varying Corrosion Defects
This paper proposes the application of particle swarm optimization (PSO) technique to oil and gas pipeline under spatially varying corrosion defects. The PSO results show that to keep the oil flowing in the pipe and stil...
Method of Balanced Shared Explicit Reservation for Multicast Routing in Network
A given work proposes a method of balanced shared explicit reservation for multicast routing in communication network. A mathematical model for multicast routing supporting shared explicit reservation of link resource wa...
Lattice Points on the Homogeneous Cone
The ternary quadratic homogeneous equation representing homogeneous cone given by by is analyzed for its non-zero distinct integer points on it. Three different patterns of integer points satisfying the cone under consi...
Effectiveness of Palm Kernel Shells as Packings for Biogas Chemical Scrubbing at Ambient Conditions
Bio-methane is a flammable renewable energy resource processed an-aerobically from biomass which includes municipal wastes, farm animal wastes, and vegetable/food wastes among others. The raw bio-methane produced contain...