Mechanical, durability and microstructure properties of lightweight concrete using aggregate made from lime-treated sewage sludge and palm oil fuel ash

Lau, P. C. and Teo, DCL and Mohammad, Abdul Mannan (2018) Mechanical, durability and microstructure properties of lightweight concrete using aggregate made from lime-treated sewage sludge and palm oil fuel ash. Construction and Building Materials, 176. pp. 24-34. ISSN 0950-0618

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Abstract

This paper reports the investigation on toxicity characteristics, microstructure, physical and mechanical properties of artificial Posslite lightweight aggregate (LWA) made from lime-treated sewage sludge (SS) and palm oil fuel ash (POFA). The presence of crystals and a dense shell of Posslite LWA enhanced its strength and the rounded shape of LWA enhanced the workability of fresh lightweight aggregate concrete (LWAC). Results showed that mechanical and durability properties of Posslite LWAC were comparable to normal weight aggregate concrete (NWAC). Posslite LWAC possesses compressive strength, VPV, sorptivity, chloride diffusion of 50.4 MPa, 8.7%, 0.0151 mm/s0.5 and 2.12 10�11 m2 /s, respectively.

Item Type: Article
Uncontrolled Keywords: Volume of permeable voids (VPV), Sorptivity, Rapid chloride penetration test (RCPT), Salt ponding, Silver nitrate colourimetric test, Water absorption, X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X-ray (EDX), Toxicity , Characteristics leaching procedure (TCLP), unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, , research, Universiti Malaysia Sarawak.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Depositing User: Gani
Date Deposited: 21 Dec 2018 07:38
Last Modified: 20 Jun 2019 07:13
URI: http://ir.unimas.my/id/eprint/22873

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