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

Document identifier: oai:DiVA.org:ltu-77023
Access full text here:10.3390/app9235238
Keyword: Engineering and Technology, Teknik och teknologier, Civil Engineering, Geotechnical Engineering, Samhällsbyggnadsteknik, Geoteknik, Petrit T, Cement, Secant modulus, Workability, Soil strength, Solidification, PH, Soil Mechanics
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 15 Life on land
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

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.

Authors

Wathiq Al-Jabban

Luleå tekniska universitet; Geoteknologi
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Jan Laue

Luleå tekniska universitet; Geoteknologi
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Sven Knutsson

Luleå tekniska universitet; Geoteknologi
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Nadhir Al-Ansari

Luleå tekniska universitet; Geoteknologi
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