Influence of Dicalcium Silicate and Tricalcium Aluminate Compounds in Different Local Cement Brands on the Compressive Strength of Normal Concrete

Abstract:

The mould-ability of concrete into intricate forms and the versatility of its constituent materials has made concrete to be the most preferred construction material. However, in developing nations such as Nigeria, poor quality of concrete is listed among the common causes of building collapse. Thus, this study investigated the effects of chemical compounds of four commonly used local ordinary Portland cement brands on the compressive strength of normal concrete. The cement was labelled brands A, B, C, and D, respectively, while all the other constituent materials remained constant in this study. The HACH DR 200 direct reading spectrophotometer method was used to analyze the composition of the oxide in each of the cement samples, while the Bogue composition formula was used to estimate the compound compositions of the cement samples. A designed mix proportion of 1:2:4 (cement: sand: granite) at water-cement ratio (w/c) of 0.6 was used to produce the concrete with an expected target strength of 25 N/mm². Also, the initial and final setting time of the cement samples and the workability of the concrete mixes were determined. Forty-Eight (48) numbers cube samples were cast and tested for compressive strength at 3, 7, 14, and 28 curing days, respectively, using a 150 mm concrete cubes. The result shows the setting time of the cement samples to be within an acceptable period. Also, results indicated that the cement brands have a significant percentage of Tricalcium Silicate (C₃S) content and low percentage Dicalcium Silicate (C₂S) content responsible for faster hydration rate and higher early strength gain of the concrete. However, it was observed that a higher percentage of Tricalcium aluminate (C₃A) leads to higher strength gain from 7 to 28 days of curing age.

• Periodical: Solid State Phenomena (Volume 318)
• Pages: 59-69
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.318.59
• Online since: May 2021
• Authors: Anthony N. Ede, Oluwarotimi Michael Olofinnade*, Akpabot Ifiok Akpabot, Solomon O. Oyebisi, David O. Nduka
• Keywords: Bogue Composition, Compressive Strength, Normal Strength Concrete, Portland Cement, Setting Time, Workability

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