Table 2 - uploaded by Ode Thankgod
Content may be subject to copyright.
Source publication
ABSTRACT: In this study, the effects of sulfuric acid was investigated on various grades of concrete: M25,
M30 and M40, for a period of 90 days exposure to the acid. Each grade comprised of three mixes: laterite rock
concrete, superplasticized laterite rock concrete and granite or conventional concrete. The concrete cubes were
first cast and cured...
Contexts in source publication
Context 1
... grades of concrete were designed for to achieve a minimum of grade 25 after 28 days. Each grade of concrete had 3 mixes comprising of granite or normal concrete NC as control, laterite rock concrete LRC and laterite rock concrete plus superplasticizer LRC + S. In all, a total of 9 mixes were developed(See Table 2). Thereafter, mixing was done in accordance with BS 5328: 1997 using a 50litre capacity rotary mixer. ...
Context 2
... 90 days (Fig. 12), the average SDF for M25, M30 and M40 were 32.18%, 28.41% and 19.72% respectively. This trend could be ascribed to a decrease in aggregate/cement (A/C) ratio of mixesfrom M25 to M40 (Table 2) leading to stronger and cohesive concrete matrix which then translates to a higher acid resistance. ...
Similar publications
In this paper, an experimental study is carried out to investigate the effect of thermal shock on the mechanical properties of recycled glass concrete exposed to temperatures between 150 °C to 600 °C due to rapid cooling regimes, namely, natural cooling, spraying water, using CO2 fire extinguishers, and immersion in water. The amount of waste glass...
Citations
The strength relationship of metakaolin blended laterite rock concrete (MK-LRC) is studied. The aim is to predict the splitting tensile strength of MK-LRC as a function of compressive strength for design purposes. Various regression analysis was carried out using experimental data. The reliability of the proposed equations were tested using the method of integral absolute error (IAE). Results revealed that a logarithmic function was deemed adequate as it had the least IAE value of 9.95% as well as an acceptable coefficient of determination R2 value of 0.8335. The study also showed that the optimum strength performance of MK-LRC was obtained at 5% MK replacement for fine aggregate. Furthermore, in comparison to other existing concrete models, the splitting tensile strength of MK-LRC is relatively low, owing to the poor physical and mechanical properties of laterite aggregate.
