Khairul Anuar, Shahid and M. F. M., Jaafar and F. M., Yahaya (2014) Self-Healing Behaviour of Pre-Cracked Pofa-Concretes in Different Curing Conditions. Journal of Mechanical Engineering and Sciences (JMES) , 7. pp. 1227-1235. ISSN 2289-4659 (print); 2231-8380 (online). (Published)
|
PDF
Self-Healing Behaviour Of Pre-Cracked Pofa-Concretes In Different Curing Conditions.pdf - Published Version Download (365kB) | Preview |
Abstract
The investigation of the effect of curing conditions on self-healing of pre-cracked concrete containing palm oil fuel ash (POFA)-concrete is presented. Concrete grade 30 was used and POFA cement replaced 10%, 20% and 30% of the total weight of ordinary Portland cement [1].The compressive strength was tested after 7, 28, 60 and 90 days cured in water in order to investigate the strength development of the POFA-concretes. In addition, the pre-crack (hairline crack) concrete was examined under compression load to determine the effectiveness of self-healing POFA-concretes after different curing conditions. Four types of curing condition, namely air, room temperature, wet and dry, and water curing were tested. An ultra-pulse velocity (UPV) test was performed after 7, 28, 60 and 90 days of curing to monitor the self-healing progress in the POFA-concrete. The results show that POFA-concrete witha 20% replacement level recorded the highest compressive strength. It was also revealed that the UPV readings increased significantly with increased curing age. The results showed that the selfhealing ability of pre-cracked POFA-concrete at 10% replacement level increases significantly for the water curing condition. From these findings, the optimum POFA replacement level was recorded at 20% for the strength, while inclusion of a 10% POFA replacement level was appropriate for self-healing concrete
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POFA-concretes; compressive strength; self-healing; curing condition; ultrapulse velocity. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Faculty/Division: | Faculty of Civil Engineering & Earth Resources |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 19 Jun 2015 02:28 |
| Last Modified: | 19 Feb 2018 06:54 |
| URI: | http://umpir.ump.edu.my/id/eprint/8984 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |