Matches in SemOpenAlex for { <https://semopenalex.org/work/W2278696603> ?p ?o ?g. }
- W2278696603 abstract "The effect of ingress of Cl and SO4 on compressive strength development and the ions diffusivity in selected Ordinary Portland Cement (OPC) was investigated. The aggressive media used included sea water (SW) and waste water from leather industry (WLI). Three brands of commonly used cements of OPC in Kenya were used. Mortar prisms were prepared for each brand of cement at different water to cement ratio; (w/c) of 0.5, 0.6, 0.65 and 0.7 and allowed to cure for 28 days in a highly humid environment. The aggressive ions ingress in the mortar prisms was accelerated using a potential difference of 12V ± 0.1V DC power source. Analysis of diffusivity and diffusion coefficient of Cl and SO4 was finally done. Compressive strength analysis was done before (at the 2, 7, 14 and 28 day) and after exposure to the aggressive ions. The diffusivity of chlorides was more pronounced than that of sulphates. Diffusivity was observed to be higher at higher w/c for all cement categories. The apparent diffusion coefficients (Dapp) of chlorides were found to be higher than those of sulphates. Dapp values for chlorides were found to be in the range of 1.730 x 10 m/s to 4.683 x 10m/s and for sulphates within 1.0610 x 10 m/s to 6.2240 x 10 m/s. The Dapp values were approximated from solutions to Fick’s 2 law using the error function. Cement A at all w/c showed lower Dapp values than both cements B and C. Compressive strength increased with curing age with the highest observed at 28 days. Cement A was generally found to have the highest compressive strength for all w/c ratios. The compressive strength was observed to increase after the mortar prisms were" @default.
- W2278696603 created "2016-06-24" @default.
- W2278696603 creator A5000524613 @default.
- W2278696603 date "2014-08-19" @default.
- W2278696603 modified "2023-09-23" @default.
- W2278696603 title "Sulphate and Chloride Ingress and The Effect in Selected Cements Mortar Prisms Immersed in Sea Water and Leather Industry Effluent" @default.
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