Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover
Chemical oxygen demand; Compaction; Compressive strength; Granular materials; Gypsum; Leachate treatment; Mixtures; Sewage sludge; Column test; Compaction degree; Constant head; Degree conditions; Degree of compaction; Landfill covers; Property; Red gypsum; Unconfined compressive strength; Wastes re...
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2023
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my.uniten.dspace-261322023-05-29T17:07:04Z Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover Rosli N.A. Aziz H.A. Selamat M.R. Lim L.L.P. Zawawi M.H. 57209705073 7005960760 8860497200 28567885800 39162217600 Chemical oxygen demand; Compaction; Compressive strength; Granular materials; Gypsum; Leachate treatment; Mixtures; Sewage sludge; Column test; Compaction degree; Constant head; Degree conditions; Degree of compaction; Landfill covers; Property; Red gypsum; Unconfined compressive strength; Wastes recycling; Hydraulic conductivity This paper investigates the response of sewage sludge and red gypsum mixture under different compaction degree conditions in terms of hydraulic conductivity and unconfined compressive strength (UCS). The UCS and hydraulic conductivity assessments were undertaken using UCS machine and column test using the constant head method, respectively. Five samples were compacted to various degree of compaction (60, 70, 75, 80 and 85%) and percolated with distilled water for six months. The leachate samples from the column test were collected and analyzed at pre-determined days of 1, 3, 7, 14, 28, 42, 56, 75, 90, 120, 150 and 180. The UCS of samples increased with increasing degree of compaction, attributed to the increased number of contact and interparticle interaction between the particles. The degree of compaction appears to affect the initial hydraulic conductivity for the first three days of the experiment, however, gradually stabilize at 10-6 cm/s after 75 days for all samples. The concentration of leached metals and chemical oxygen demand (COD) is below the regulated limit that could affect the environment. The recommended degree of compaction is beyond 80% to achieve the required compressive strength of 345 kPa. � 2021 Elsevier Ltd Final 2023-05-29T09:07:03Z 2023-05-29T09:07:03Z 2021 Article 10.1016/j.conbuildmat.2021.123153 2-s2.0-85103792270 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103792270&doi=10.1016%2fj.conbuildmat.2021.123153&partnerID=40&md5=0bd0ac3e80965f27cfdbc529cd775c31 https://irepository.uniten.edu.my/handle/123456789/26132 289 123153 Elsevier Ltd Scopus |
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Chemical oxygen demand; Compaction; Compressive strength; Granular materials; Gypsum; Leachate treatment; Mixtures; Sewage sludge; Column test; Compaction degree; Constant head; Degree conditions; Degree of compaction; Landfill covers; Property; Red gypsum; Unconfined compressive strength; Wastes recycling; Hydraulic conductivity |
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57209705073 |
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57209705073 Rosli N.A. Aziz H.A. Selamat M.R. Lim L.L.P. Zawawi M.H. |
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Article |
| author |
Rosli N.A. Aziz H.A. Selamat M.R. Lim L.L.P. Zawawi M.H. |
| spellingShingle |
Rosli N.A. Aziz H.A. Selamat M.R. Lim L.L.P. Zawawi M.H. Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| author_sort |
Rosli N.A. |
| title |
Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| title_short |
Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| title_full |
Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| title_fullStr |
Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| title_full_unstemmed |
Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| title_sort |
effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
| _version_ |
1806428503452680192 |
| score |
13.214268 |