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Open AccessArticle

A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization

1
Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, 971 87 Lulea, Sweden
2
Civil Engineering Department, University of Babylon, P.O. Box 4 Hilla, Babylon 51001, Iraq
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(23), 5238; https://doi.org/10.3390/app9235238
Received: 17 August 2019 / Revised: 19 November 2019 / Accepted: 27 November 2019 / Published: 2 December 2019
(This article belongs to the Section Civil Engineering)
This study presents a comparison between the effectiveness of adding low binder amounts of industrial by-product Petrit T as well as cement to modify and improve fine-grained soil. Binder amount was added by soil dry weight; cement at 1%, 2%, 4% and 7% and Petrit T at 2%, 4% and 7%. The unconfined compressive strength (UCS) was used as an indicator of soil strength. In addition, the consistency limits, laser particle size analysis, and pH tests were also conducted on the treated soil. The samples were cured at 20 °C for different periods from 7 to 90 days before testing. Results indicate that cement is more effective at improving the physical and engineering properties of the treated soil. Soil plasticity index decreases after treatment and with time. Liquidity index and the water content to plastic limit ratio are introduced as new indices to define the improvement in the workability of treated soil. Soil particle size distribution is changed by reducing the clay size fraction and increasing the silt size fraction after treatment. The findings confirm that adding small binder contents improve soil properties, which subsequently reduce the environmental threats and costs that are associated with using a high amount of binder. View Full-Text
Keywords: Petrit T; cement; secant modulus; workability; soil strength; solidification; pH Petrit T; cement; secant modulus; workability; soil strength; solidification; pH
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MDPI and ACS Style

Al-Jabban, W.; Laue, J.; Knutsson, S.; Al-Ansari, N. A Comparative Evaluation of Cement and By-Product Petrit T in Soil Stabilization. Appl. Sci. 2019, 9, 5238.

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