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The benefits of using manufactured sand with cement for peat stabilisation: An experimental investigation of physico-chemical and mechanical properties of stabilised peat
- Source :
- Bulletin of Engineering Geology and the Environment. 79:4441-4460
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- The traditional use of cement for soil stabilisation is challenged by peat due to the high organic content in peat and the associated unfavourable environmental and economic impacts. This study explores the potential and benefits of using manufactured sand, an economical, easily accessible and environmentally friendly construction material, with cement for peat stabilisation. Experiments were conducted with a view to investigating the optimal dosage of manufactured sand and cement, as evidenced by the improvement in the physico-chemical and mechanical qualities of stabilised peat. Based on the required strength of 1.00 MPa in engineering practice, an optimal configuration was determined with the ratio of manufactured sand to peat being 5:5, and the cement content 36.15%. At the optimal configuration, the unconfined compressive strength of stabilised peat was 2.33 times greater than the specimens without sand, and the void ratio was reduced from 1.72 of natural peat to less than 0.58. Optimal configuration can reduce cement dosage by 36.36%, hence carbon emissions by 36.36%, and costs by 38.28%. This study established that using manufactured sand with cement offered an economical, efficient and environmentally friendly engineering solution to peat stabilisation.
- Subjects :
- Cement
Peat
Waste management
0211 other engineering and technologies
Geology
02 engineering and technology
010502 geochemistry & geophysics
Geotechnical Engineering and Engineering Geology
01 natural sciences
Environmentally friendly
Compressive strength
Nature Conservation
Greenhouse gas
Environmental science
Organic content
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 14359537 and 14359529
- Volume :
- 79
- Database :
- OpenAIRE
- Journal :
- Bulletin of Engineering Geology and the Environment
- Accession number :
- edsair.doi...........df0e76d441e93b5f878459ed4be9213b