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Effect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill cover

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dc.citedby2
dc.contributor.authorRosli N.A.en_US
dc.contributor.authorAziz H.A.en_US
dc.contributor.authorSelamat M.R.en_US
dc.contributor.authorLim L.L.P.en_US
dc.contributor.authorZawawi M.H.en_US
dc.contributor.authorid57209705073en_US
dc.contributor.authorid7005960760en_US
dc.contributor.authorid8860497200en_US
dc.contributor.authorid28567885800en_US
dc.contributor.authorid39162217600en_US
dc.date.accessioned2023-05-29T09:07:03Z
dc.date.available2023-05-29T09:07:03Z
dc.date.issued2021
dc.descriptionChemical 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 conductivityen_US
dc.description.abstractThis 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 Ltden_US
dc.description.natureFinalen_US
dc.identifier.ArtNo123153
dc.identifier.doi10.1016/j.conbuildmat.2021.123153
dc.identifier.scopus2-s2.0-85103792270
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85103792270&doi=10.1016%2fj.conbuildmat.2021.123153&partnerID=40&md5=0bd0ac3e80965f27cfdbc529cd775c31
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/26132
dc.identifier.volume289
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleConstruction and Building Materials
dc.titleEffect of compaction on physical properties of a sewage sludge and red gypsum mixture as intermediate landfill coveren_US
dc.typeArticleen_US
dspace.entity.typePublication
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