SIGNIFICANT LEVELS OF STEEL SLAG CONCRETE PRODUCED WITH VARYING WATER CEMENT RATIOS

This study investigated the significance of steel slag concrete created with varying water cement ratios. Steel slag from Prism Nigeria Limited was used to replace granite (at 0, 40, 50 and 60 %) in concrete. Properties of this modified concrete were examined and its results were exposed to measurable test utilizing Analysis of Variance (ANOVA). The outcome indicated that the compressive and flexural qualities of the concrete increased with increased in slag content but consistently decreased as the water-cement ratios increased. The p-values of the ANOVA test for the models term are significant because they are less than 0.05

EVALUATION OF THE STATISTICAL SIGNIFICANCE OF COMPACTIVE EFFORTS, SLAG AND CEMENT ON THE GEOTECHNICAL FEATURES OF LATERITE SOIL

This study investigated the statistical significance of compactive efforts, steel slag and cement on the geotechnical features of the laterite soil. Steel slag and cement were incorporated into the soil. Some geotechnical tests were performed on slag-cement-soil samples. Findings showed that the liquid limit (LL) and plasticity index (PI) decreased with increasing slag content, while cement addition increased LL and PI. As compactive efforts increased, MDD and CBR increased with a corresponding decrease in OMC. A more significant influence of the compactive effort and steel slag on the geotechnical features of the laterite than that of cement was observed

EVALUATION OF THE STATISTICAL SIGNIFICANCE OF COMPACTIVE EFFORTS, SLAG AND CEMENT ON THE GEOTECHNICAL FEATURES OF LATERITE SOIL

This study investigated the statistical significance of compactive efforts, steel slag and cement on the geotechnical features of the laterite soil. Steel slag and cement were incorporated into the soil. Some geotechnical tests were performed on slag-cement-soil samples. Findings showed that the liquid limit (LL) and plasticity index (PI) decreased with increasing slag content, while cement addition increased LL and PI. As compactive efforts increased, MDD and CBR increased with a corresponding decrease in OMC. A more significant influence of the compactive effort and steel slag on the geotechnical features of the laterite than that of cement was observed

Application of Saw Dust Ash as Partial Replacement for Cement in the Production of Interlocking Paving Stones

As a way of reusing and converting industrial by-products into useful materials for the construction industry, this paper investigated the application of Saw dust ash (SDA) as partial substitute for ordinary Portland cement (OPC) in the production of interlocking paving stones. The study examined the oxide composition of SDA to determine its suitability as a pozzolanic material. Some characteristics of paving stones with SDA as a substitute for OPC were investigated and the results indicated that SDA is a good pozzolan having satisfied the required standards. The compressive strength of the samples, with substitution levels ranging from 5 to 25% cured for 3–56 days, was lower at initial curing period but improved significantly at later days. 5% substitution level showed an increase in strength compared to 0% SDA paving stones regardless of curing period.  Density decreased with increasing ash content, whereas water absorption increased with SDA content. The study therefore indicated that SDA paving stones can gain higher strength than the conventional ones at longer curing periods, which is as a result of its pozzolanic reactions