Abstract
Mount Merapi is one of the most active volcanoes in the world with eruptions every two to five years. Frequent eruptions, with the resultant volcanic ash, have become an important environmental issue when it is not effectively reduced. In engineering practice, utilization of volcanic ash as substitution material is limited. Indonesia has a large road on soft soil, and volcanic ash can be used as an alternative soil improvement. The objectives focus on the effect of volcanic ash content as substitution material for soil stabilization and also as a new approach, in view of environmental aspects, for soft-soil improvement. Engineering properties of soil mixture, the effect of volcanic ash content and its fines level are discussed. The fineness of volcanic ash (pozzolan) is a primary factor in the stabilization process. Utilization of volcanic ash with a grain size passing sieve number 270 is more effective. The effect of volcanic ash content on soil stabilization can: (1) improve the engineering properties of soft soil; (2) change the grain size distribution curve by decreasing the fine fraction; (3) decrease consistency limits and become non-plastic soil; (4) increase bearing capacity; and, (5) decrease swelling potential. The addition of 35% volcanic ash and 9% lime gives the most significant effect on soil improvement.
| Original language | English |
|---|---|
| Title of host publication | Ground Improvement and Geosynthetics - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress |
| Publisher | American Society of Civil Engineers (ASCE) |
| Pages | 138-147 |
| Number of pages | 10 |
| Edition | 238 GSP |
| ISBN (Print) | 9780784413401 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 2014 GeoShanghai International Congress: Ground Improvement and Geosynthetics - Shanghai, China Duration: May 26 2014 → May 28 2014 |
Other
| Other | 2014 GeoShanghai International Congress: Ground Improvement and Geosynthetics |
|---|---|
| Country | China |
| City | Shanghai |
| Period | 5/26/14 → 5/28/14 |
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All Science Journal Classification (ASJC) codes
- Architecture
- Civil and Structural Engineering
- Building and Construction
- Geotechnical Engineering and Engineering Geology
Cite this
Effect of volcanic ash utilization as substitution material for soil stabilization in view point of geo-environment. / Rifa'I, A.; Yasufuku, Noriyuki.
Ground Improvement and Geosynthetics - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress. 238 GSP. ed. American Society of Civil Engineers (ASCE), 2014. p. 138-147.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effect of volcanic ash utilization as substitution material for soil stabilization in view point of geo-environment
AU - Rifa'I, A.
AU - Yasufuku, Noriyuki
PY - 2014
Y1 - 2014
N2 - Mount Merapi is one of the most active volcanoes in the world with eruptions every two to five years. Frequent eruptions, with the resultant volcanic ash, have become an important environmental issue when it is not effectively reduced. In engineering practice, utilization of volcanic ash as substitution material is limited. Indonesia has a large road on soft soil, and volcanic ash can be used as an alternative soil improvement. The objectives focus on the effect of volcanic ash content as substitution material for soil stabilization and also as a new approach, in view of environmental aspects, for soft-soil improvement. Engineering properties of soil mixture, the effect of volcanic ash content and its fines level are discussed. The fineness of volcanic ash (pozzolan) is a primary factor in the stabilization process. Utilization of volcanic ash with a grain size passing sieve number 270 is more effective. The effect of volcanic ash content on soil stabilization can: (1) improve the engineering properties of soft soil; (2) change the grain size distribution curve by decreasing the fine fraction; (3) decrease consistency limits and become non-plastic soil; (4) increase bearing capacity; and, (5) decrease swelling potential. The addition of 35% volcanic ash and 9% lime gives the most significant effect on soil improvement.
AB - Mount Merapi is one of the most active volcanoes in the world with eruptions every two to five years. Frequent eruptions, with the resultant volcanic ash, have become an important environmental issue when it is not effectively reduced. In engineering practice, utilization of volcanic ash as substitution material is limited. Indonesia has a large road on soft soil, and volcanic ash can be used as an alternative soil improvement. The objectives focus on the effect of volcanic ash content as substitution material for soil stabilization and also as a new approach, in view of environmental aspects, for soft-soil improvement. Engineering properties of soil mixture, the effect of volcanic ash content and its fines level are discussed. The fineness of volcanic ash (pozzolan) is a primary factor in the stabilization process. Utilization of volcanic ash with a grain size passing sieve number 270 is more effective. The effect of volcanic ash content on soil stabilization can: (1) improve the engineering properties of soft soil; (2) change the grain size distribution curve by decreasing the fine fraction; (3) decrease consistency limits and become non-plastic soil; (4) increase bearing capacity; and, (5) decrease swelling potential. The addition of 35% volcanic ash and 9% lime gives the most significant effect on soil improvement.
UR - http://www.scopus.com/inward/record.url?scp=84903287358&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903287358&partnerID=8YFLogxK
U2 - 10.1061/9780784413401.014
DO - 10.1061/9780784413401.014
M3 - Conference contribution
AN - SCOPUS:84903287358
SN - 9780784413401
SP - 138
EP - 147
BT - Ground Improvement and Geosynthetics - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress
PB - American Society of Civil Engineers (ASCE)
ER -