The effectiveness of palm oil fuel ash cement paste to control degradation in ammonium nitrate solution

• Main Authors: Tasnim, Sadia, M. E, Rahman, A, Raudhah, Doh, Shu Ing
• Format: Conference or Workshop Item
• Language: English
• Published: IOP Publishing 2020
• Subjects: TA Engineering (General). Civil engineering (General); TH Building construction
• Online Access: http://umpir.ump.edu.my/id/eprint/29946/1/2020%20The%20Effectiveness%20of%20Palm%20Oil%20Fuel%20Ash%20Cement%20Paste%20to%20Control%20Degradation%20in%20Ammonium%20Nitrate%20Solution.pdf; http://umpir.ump.edu.my/id/eprint/29946/; https://doi.org/10.1088/1757-899X/712/1/012024
• Institution: Universiti Malaysia Pahang

This paper presents the use of treated palm oil fuel ash (POFA) as a pozzolanic material in modified cement paste to control degradation in ammonium nitrate environment. The POFA used in this study had a mean diameter of 8.7μm. The treated POFA was used to replace cement in different percentage of 0%, 10%, 20% and 30% with a constant water to cement ratio of 0.4. 50mm cement cubes was prepared for mechanical, durability and micro-structural test. Mechanical test consisted of the compression strength test and durability test consisted of the Volume of Permeable Voids Test (VPV). Meanwhile, micro-structural test consisted of the Thermo-gravimetric analysis (TGA). After 28 days of full water curing, the 50mm cubes samples were immersed in 20% ammonium nitrate solution until 90 days. Based on the test results, it was observed that, cement cubes replaced with 20% POFA had good resistance against ammonium nitrate solution. However, in order to improve the current study, a number of recommendations had been suggested.