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Effect of Geosynthetic Reinforcement on Strength Behaviour of Subgrade-Aggregate Composite System
https://orcid.org/https://orcid.org/0000-0001-7320-8783
https://orcid.org/https://orcid.org/0000-0002-7773-4489
https://orcid.org/https://orcid.org/0000-0002-4685-5560
Geosynthetics have been the most important innovation in the field of geotechnical engineering. This paper presents the results of laboratory California bearing ratio (CBR) tests that were carried out on unreinforced and reinforced soil–aggregate composite systems. The soil used in these tests is locally available soil which is classified as silty sand (SM) as per the Indian Soil Classification System. The improvement in the strength of subgrade-aggregate composite system was determined through the tests conducted in the standard CBR mould in terms of CBR value. Unreinforced soil–aggregate composite system is prepared by compacting the soil layer in the mould, and placing the aggregates layer above the soil, where the soil represents the existing subgrade and aggregate layers, represents the base course material of an unpaved road. In reinforced soil–aggregate composite system, the reinforcing layer is inserted at the interface of the soil and aggregate layers. The geosynthetics used in the study as reinforcing layers are geotextile, geogrid and geomat. Some more tests were conducted on reinforced soil–aggregate composite system with double layers of reinforcement such that the first reinforcing layer was placed at the interface of the soil and aggregate layers and another reinforcing layer was placed at the middle half of the compacted aggregate layer. Unreinforced and reinforced soil–aggregate composite systems were subjected to standard penetrating load while performing the tests, and the performance of reinforced soil–aggregate composite system was compared with that of the unreinforced systems. The effect of type of reinforcement on the load–penetration curve and the relative performance of various types of geosynthetics have also been investigated.
Effect of Geosynthetic Reinforcement on Strength Behaviour of Subgrade-Aggregate Composite System
https://orcid.org/https://orcid.org/0000-0001-7320-8783
https://orcid.org/https://orcid.org/0000-0002-7773-4489
https://orcid.org/https://orcid.org/0000-0002-4685-5560
Geosynthetics have been the most important innovation in the field of geotechnical engineering. This paper presents the results of laboratory California bearing ratio (CBR) tests that were carried out on unreinforced and reinforced soil–aggregate composite systems. The soil used in these tests is locally available soil which is classified as silty sand (SM) as per the Indian Soil Classification System. The improvement in the strength of subgrade-aggregate composite system was determined through the tests conducted in the standard CBR mould in terms of CBR value. Unreinforced soil–aggregate composite system is prepared by compacting the soil layer in the mould, and placing the aggregates layer above the soil, where the soil represents the existing subgrade and aggregate layers, represents the base course material of an unpaved road. In reinforced soil–aggregate composite system, the reinforcing layer is inserted at the interface of the soil and aggregate layers. The geosynthetics used in the study as reinforcing layers are geotextile, geogrid and geomat. Some more tests were conducted on reinforced soil–aggregate composite system with double layers of reinforcement such that the first reinforcing layer was placed at the interface of the soil and aggregate layers and another reinforcing layer was placed at the middle half of the compacted aggregate layer. Unreinforced and reinforced soil–aggregate composite systems were subjected to standard penetrating load while performing the tests, and the performance of reinforced soil–aggregate composite system was compared with that of the unreinforced systems. The effect of type of reinforcement on the load–penetration curve and the relative performance of various types of geosynthetics have also been investigated.
Effect of Geosynthetic Reinforcement on Strength Behaviour of Subgrade-Aggregate Composite System
https://orcid.org/https://orcid.org/0000-0001-7320-8783
https://orcid.org/https://orcid.org/0000-0002-7773-4489
https://orcid.org/https://orcid.org/0000-0002-4685-5560
Geosynthetics have been the most important innovation in the field of geotechnical engineering. This paper presents the results of laboratory California bearing ratio (CBR) tests that were carried out on unreinforced and reinforced soil–aggregate composite systems. The soil used in these tests is locally available soil which is classified as silty sand (SM) as per the Indian Soil Classification System. The improvement in the strength of subgrade-aggregate composite system was determined through the tests conducted in the standard CBR mould in terms of CBR value. Unreinforced soil–aggregate composite system is prepared by compacting the soil layer in the mould, and placing the aggregates layer above the soil, where the soil represents the existing subgrade and aggregate layers, represents the base course material of an unpaved road. In reinforced soil–aggregate composite system, the reinforcing layer is inserted at the interface of the soil and aggregate layers. The geosynthetics used in the study as reinforcing layers are geotextile, geogrid and geomat. Some more tests were conducted on reinforced soil–aggregate composite system with double layers of reinforcement such that the first reinforcing layer was placed at the interface of the soil and aggregate layers and another reinforcing layer was placed at the middle half of the compacted aggregate layer. Unreinforced and reinforced soil–aggregate composite systems were subjected to standard penetrating load while performing the tests, and the performance of reinforced soil–aggregate composite system was compared with that of the unreinforced systems. The effect of type of reinforcement on the load–penetration curve and the relative performance of various types of geosynthetics have also been investigated.
Effect of Geosynthetic Reinforcement on Strength Behaviour of Subgrade-Aggregate Composite System
Lecture Notes in Civil Engineering
Kanwar, Varinder S. (editor) / Shukla, Sanjay Kumar (editor) / Singh, Meenakshi (author) / Trivedi, Ashutosh (author) / Shukla, Sanjay Kumar (author)
2020-05-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
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