The Use of Rice Husk Ash in Low - Cost Sandcrete Block
Journal Title: Leonardo Electronic Journal of Practices and Technologies - Year 2006, Vol 5, Issue 8
Abstract
The compressive strength of some commercial sandcrete blocks in Minna, Nigeria was investigated. Rice Husk Ash (RHA) was prepared using Charcoal from burning firewood. Preliminary analysis of the Constituent materials of the ordinary Portland Cement (OPC) / Rice Husk Ash (RHA) hollow sandcrete blocks were conducted to confirm their suitability for block making. Physical test of the freshly prepared mix was also carried out. 150mm´450mm hollow sandcrete blocks were cast cured and crushed for 1, 3, 7, 14, 21, and 28 days at 0, 10, 20, 30, 40 and 50 percent replacement levels. Test results indicate that most commercial sandcrete blocks in Minna town are below standard. The compressive strength of the OPC/RHA sandcrete blocks increases with age at curing and decreases as the percentage of RHA content increases. The study arrived at an optimum replacement level of 20%.
Authors and Affiliations
E. OYETOLA, M. ABDULLAHI
Keywords
Related Articles
- EP ID EP91236
- DOI -
- Views 104
- Downloads 0
Investigation of the Inhibitive Effect of Pyrazolo [3, 4-b] Pyridine on Corrosion of Stainless Steel in 1 M HCl Solutions
The purpose of this study to investigate the effect of pyrazolo [3-4-b] pyridine on the corrosion inhibition of stainless steel in 1.0M hydrochloric acid (HCl) by using the following methods: the weight loss method, the...
Binomial Distribution Sample Confidence Intervals Estimation 10. Relative Risk Reduction and RRR-like Expressions
In trial, when the results are reported as dichotomies variables, the most important measure of effect are represented by the relative risk reduction, absolute risk reduction and number needed to treat, providing the bas...
Evaluation of Causes of Retaining Wall Failure
Retaining structures are vital geotechnical structure, because the topography of the earth surface is a combination of plain, sloppy and undulating terrain. The retaining wall resists thrust of a bank of earth as well as...
Loco2000. Technical Characteristics
The paper show the function parameters of locomotive components “Loco 2000”, putting accent from their maximal values; the mode who works the force circuit, insisting of modulation technique necessary to obtain a high po...
Testing and Modeling of Petroleum Based Lubricating Oils by an Improvised System
The effect of temperature, pressure and time was tested on the viscosities of ten lubricant samples using 23 factorial designs, also an analysis of variance procedure and subsequently a regression model was carried out f...