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Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column

In today's construction industry, there are various types of ground improvement techniques are need due to existence of problematic soil like soft soil. Stone column is one of the ground improvement techniques to improve the soft soil strength. Bottom ash, as a residue of coal combustion from c...

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Main Author: Sharifah Ilya Nur Shuhada , Syed Abdullah
Format: Undergraduates Project Papers
Language:English
Published: 2014
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/10457/1/SHARIFAH%20IYLIA%20NUR%20SHUHADA%20BINTI%20SYED%20ABDULLAH.PDF
http://umpir.ump.edu.my/id/eprint/10457/
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spelling my.ump.umpir.104572021-07-21T03:11:39Z http://umpir.ump.edu.my/id/eprint/10457/ Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column Sharifah Ilya Nur Shuhada , Syed Abdullah TA Engineering (General). Civil engineering (General) In today's construction industry, there are various types of ground improvement techniques are need due to existence of problematic soil like soft soil. Stone column is one of the ground improvement techniques to improve the soft soil strength. Bottom ash, as a residue of coal combustion from coal power plants, has similar properties with sand and potentially use as stone columns. The utilization of the industrial by-products is recognized nowadays due to the continuous dwindling of non-renewable natural materials. Furthermore, the large production of bottom ash from coal burning in Malaysia has results in waste issues. So, by using bottom ash column, the disposal problem for bottom ash could extensively be reduced. This research is to show the improvement level in shear strength of soft clay after being reinforced with single bottom ash column. The first study was to determine the physical and mechanical properties of kaolin and bottom ash. The results show that kaolin can be classified as clayey soil and the bottom ash it has relatively similar characteristics to sand. Next, remoulded specimens of 50mm in diameter and 100mm in height of kaolin are tested under Unconfined Compression Test (UCT). A total 35 specimens of kaolin samples were tested using unconfined compression test to determine the shear strength parameter. It can be concluded that the shear strength parameters were affected by the diameter and the height of the column. Diameter for single bottom ash columns are 6 mm, and 10mm. So, the area ratio between the area of the bottom ash column and area of the specimen (Ac/As) are 1.44% and 4.0%.The heights of single bottom ash column are 24mm, 36mm, 48mm4 40mm, 60mm and 80mm. So, the height penetration ratios between the heights of column with the height of the specimen (Hc/Hs) are 0.24, 0.36, 0.48, 0.40, 0.60 and 0.8 respectively. Hence, the volume ratio between the volume of the bottom ash column and volume of the specimen (Vc/Vs) are 0.35%, 0.52%, 0.69% 1.60%, 2.40%, 3.20%. The presence of bottom ash column really improved the shear strength. Nonetheless, column longer than 80% of the soil length, did not lead to further increment in shear strength. This is considered as the "critical column length" where used as vertical granular column. 2014-07 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10457/1/SHARIFAH%20IYLIA%20NUR%20SHUHADA%20BINTI%20SYED%20ABDULLAH.PDF Sharifah Ilya Nur Shuhada , Syed Abdullah (2014) Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column. Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang.
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Sharifah Ilya Nur Shuhada , Syed Abdullah
Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
description In today's construction industry, there are various types of ground improvement techniques are need due to existence of problematic soil like soft soil. Stone column is one of the ground improvement techniques to improve the soft soil strength. Bottom ash, as a residue of coal combustion from coal power plants, has similar properties with sand and potentially use as stone columns. The utilization of the industrial by-products is recognized nowadays due to the continuous dwindling of non-renewable natural materials. Furthermore, the large production of bottom ash from coal burning in Malaysia has results in waste issues. So, by using bottom ash column, the disposal problem for bottom ash could extensively be reduced. This research is to show the improvement level in shear strength of soft clay after being reinforced with single bottom ash column. The first study was to determine the physical and mechanical properties of kaolin and bottom ash. The results show that kaolin can be classified as clayey soil and the bottom ash it has relatively similar characteristics to sand. Next, remoulded specimens of 50mm in diameter and 100mm in height of kaolin are tested under Unconfined Compression Test (UCT). A total 35 specimens of kaolin samples were tested using unconfined compression test to determine the shear strength parameter. It can be concluded that the shear strength parameters were affected by the diameter and the height of the column. Diameter for single bottom ash columns are 6 mm, and 10mm. So, the area ratio between the area of the bottom ash column and area of the specimen (Ac/As) are 1.44% and 4.0%.The heights of single bottom ash column are 24mm, 36mm, 48mm4 40mm, 60mm and 80mm. So, the height penetration ratios between the heights of column with the height of the specimen (Hc/Hs) are 0.24, 0.36, 0.48, 0.40, 0.60 and 0.8 respectively. Hence, the volume ratio between the volume of the bottom ash column and volume of the specimen (Vc/Vs) are 0.35%, 0.52%, 0.69% 1.60%, 2.40%, 3.20%. The presence of bottom ash column really improved the shear strength. Nonetheless, column longer than 80% of the soil length, did not lead to further increment in shear strength. This is considered as the "critical column length" where used as vertical granular column.
format Undergraduates Project Papers
author Sharifah Ilya Nur Shuhada , Syed Abdullah
author_facet Sharifah Ilya Nur Shuhada , Syed Abdullah
author_sort Sharifah Ilya Nur Shuhada , Syed Abdullah
title Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
title_short Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
title_full Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
title_fullStr Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
title_full_unstemmed Undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
title_sort undrained shear strength of soft clay reinforced with 6mm and 10mm diameter of single bottom ash column
publishDate 2014
url http://umpir.ump.edu.my/id/eprint/10457/1/SHARIFAH%20IYLIA%20NUR%20SHUHADA%20BINTI%20SYED%20ABDULLAH.PDF
http://umpir.ump.edu.my/id/eprint/10457/
_version_ 1706957215347245056
score 13.222552

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