Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads
Forest roads play an important role in forest management, timber transportation and forest protection. However, minimum standards are considered for pavement materials due to the traffic volume and economic situation of forestry projects. Therefore, this paper aims to (a) evaluate the role of Rice H...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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University of Zagreb, Faculty of Forestry
2016-01-01
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| Series: | Croatian Journal of Forest Engineering |
| Online Access: | https://hrcak.srce.hr/file/256594 |
| _version_ | 1818925237392113664 |
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| author | Majid Lotfalian Amir Modarres Wei Wu Mehran Nasiri |
| author_facet | Majid Lotfalian Amir Modarres Wei Wu Mehran Nasiri |
| author_sort | Majid Lotfalian |
| collection | DOAJ |
| description | Forest roads play an important role in forest management, timber transportation and forest protection. However, minimum standards are considered for pavement materials due to the traffic volume and economic situation of forestry projects. Therefore, this paper aims to (a) evaluate the role of Rice Husk Ash (RHA) as a soil stabilizer of sub-base layer to improve the quality of materials and (b) determine the optimum utilization among 10 combinations of soil, lime and RHA regarding the environmental factors. The results of laboratory studies on soil A–6 (AASHTOO classification) indicates a general decrease in the maximum dry density (MDD) and an increase (21.9%) in optimum moisture content (OMC) with increase in RHA content. Adding RHA (9%) causes a decrease (13.3%) in liquid limit and plasticity index (PI) of soil. However, this improving effect is not as much as the influence of lime. The California bearing ratio (CBR) of stabilized soil in both saturated condition and optimum water content was 28% and 37.5% more than the natural soil, respectively. The maximum unconfined compressive strength (UCS) values were recorded for 9% RHA, 237 KN m-2 after 28 days curing time, which was 23 KN m-2 more than the natural soil. According to the results, the combination of Soil+4% Lime+9% RHA could be used as the optimum consumption of materials for stabilization of sub-base layer in construction of forest roads. |
| first_indexed | 2024-12-20T02:38:02Z |
| format | Article |
| id | doaj.art-31c8ed9fc40540e2a542ff23daecdd46 |
| institution | Directory Open Access Journal |
| issn | 1845-5719 1848-9672 |
| language | English |
| last_indexed | 2024-12-20T02:38:02Z |
| publishDate | 2016-01-01 |
| publisher | University of Zagreb, Faculty of Forestry |
| record_format | Article |
| series | Croatian Journal of Forest Engineering |
| spelling | doaj.art-31c8ed9fc40540e2a542ff23daecdd462022-12-21T19:56:23ZengUniversity of Zagreb, Faculty of ForestryCroatian Journal of Forest Engineering1845-57191848-96722016-01-01372333343173833Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest RoadsMajid Lotfalian0Amir Modarres1Wei Wu2Mehran Nasiri3Sari university of agricultural sciences and natural resources Department of Forest engineering P.O Box 576, Badeleh, Sari, Mazandaran IRANBabol University of Technology Department of civil engineering P.O. box 484, Shariati Av., Babol, Mazandaran IRANUniversity of Natural Resources and Life sciences Institute of Geotechnical Engineering P.O. Box 85084, Vienna AUSTRIASari university of agricultural sciences and natural resources Department of Forest engineering P.O Box 576, Badeleh, Sari, Mazandaran IRANForest roads play an important role in forest management, timber transportation and forest protection. However, minimum standards are considered for pavement materials due to the traffic volume and economic situation of forestry projects. Therefore, this paper aims to (a) evaluate the role of Rice Husk Ash (RHA) as a soil stabilizer of sub-base layer to improve the quality of materials and (b) determine the optimum utilization among 10 combinations of soil, lime and RHA regarding the environmental factors. The results of laboratory studies on soil A–6 (AASHTOO classification) indicates a general decrease in the maximum dry density (MDD) and an increase (21.9%) in optimum moisture content (OMC) with increase in RHA content. Adding RHA (9%) causes a decrease (13.3%) in liquid limit and plasticity index (PI) of soil. However, this improving effect is not as much as the influence of lime. The California bearing ratio (CBR) of stabilized soil in both saturated condition and optimum water content was 28% and 37.5% more than the natural soil, respectively. The maximum unconfined compressive strength (UCS) values were recorded for 9% RHA, 237 KN m-2 after 28 days curing time, which was 23 KN m-2 more than the natural soil. According to the results, the combination of Soil+4% Lime+9% RHA could be used as the optimum consumption of materials for stabilization of sub-base layer in construction of forest roads.https://hrcak.srce.hr/file/256594 |
| spellingShingle | Majid Lotfalian Amir Modarres Wei Wu Mehran Nasiri Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads Croatian Journal of Forest Engineering |
| title | Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads |
| title_full | Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads |
| title_fullStr | Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads |
| title_full_unstemmed | Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads |
| title_short | Optimum Utilization of Rice Husk Ash for Stabilization of Sub-base Materials in Construction and Repair Project of Forest Roads |
| title_sort | optimum utilization of rice husk ash for stabilization of sub base materials in construction and repair project of forest roads |
| url | https://hrcak.srce.hr/file/256594 |
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