Abstract
This research describes a study on the effect of chemical (cement and lime) admixtures on the index and engineering properties (compaction and unconfined strength) of tropical peat soils. The ordinary Portland cement and hydrated lime were used. The amounts cement and lime added to the peat soil sample, as a percentage of the dry soil mass was in the range of 5-15% and 5-25%, respectively. The results of the study show that the addition of the chemical admixture, cement and lime, can improve the engineering properties of tropical peat soils. The soil liquid limit is found to decrease with an increase in the cement and lime content. The soil maximum dry density is found to increase while the optimum water content is found to decrease with an increase in the cement and lime content. The unconfined compressive strength of the soil is found to increase significantly with increase in cement and lime content, especially after a long curing period. However it is also found that higher organic content of the soil negate the positive effect of the cement and lime in altering (improving) the mechanical properties of the soil. When comparing the performance of the cement and lime as a chemical admixture for the tropical peat soil, the ordinary Portland cement appears to perform better than the hydrated lime.
Highlights
Peat and organic soil represent the extreme form of soft soil
The amounts cement and lime added to the peat soil sample, as a percentage of the dry soil mass, were in the range of 5-15% and 5-25%, respectively
Effect on liquid limit: Figure 4 shows the effect of cement on the liquid limit of the peat soil sample after a
Summary
Peat and organic soil represent the extreme form of soft soil. They are subject to instability such as localized sinking and slope failure and massive primary and long-term settlement when subjected to even moderate load increase [1]. The results of a study on the effect of cement and lime admixture on the index and engineering properties (compaction and unconfined strength) of tropical peat soils are presented. For a particular soil-cement mixed, there is a bigger reduction in liquid limit when more water is made available for the chemical reaction to take place.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
