In order to investigate the effect of oyster shell powder on the shear strength and pH value of acidic red clay, acidic red clay with pH value of 3.1 was used as the object of study, and oyster shell powder with particle sizes of <0.5 mm, 0.5 - 2 mm, and 2 - 5 mm were added into acidic red clay at the mixing amounts of 0%, 3%, 6%, and 9%, respectively, and the changes in shear strength and pH value were analyzed before and after the modification through the straight shear test and the pH value measurement, respectively. The test results show that oyster shell powder can effectively improve the soil shear performance index, and the soil cohesion reaches the maximum value and the internal friction angle appears to be the minimum value when the dosage of oyster shell powder is 6%. The dosage of oyster shells obviously enhances the pH value of the soil, and the increase of pH value gradually becomes slower with the increase of the dosage of oyster shells.
Cite this paper
Zhou, B. , Jiang, Y. , Liu, Y. , Yuan, H. and Yang, B. (2024). Shear Strength and pH of Acidic Red Clay Amended with Oyster Shell Powder. Open Access Library Journal, 11, e1974. doi: http://dx.doi.org/10.4236/oalib.1111974.
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