The Effectiveness of Palm Oil Fuel Ash Cement Paste to Control Degradation in Ammonium Nitrate Solution

T Sadia,A Raudhah,M E Rahman,S I Doh

doi:10.1088/1757-899x/712/1/012024

T Sadia, A Raudhah + Show 2 more

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https://doi.org/10.1088/1757-899x/712/1/012024

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Abstract

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.

Highlights

Concrete is one of the oldest known man-made construction materials used for construction of various structures; such as bridges, dams, tunnels, buildings, sewerage systems, pavement, runways, roads and fertilizer plants
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 aim of this paper is to investigate the effect of using palm oil fuel ash (POFA) as a cement replacement material to control degradation of cement paste in ammonium nitrate environment

Summary

Introduction

Concrete is one of the oldest known man-made construction materials used for construction of various structures; such as bridges, dams, tunnels, buildings, sewerage systems, pavement, runways, roads and fertilizer plants. Over the last few decades, the lifespan of concrete structures has become a primary concern as many structures have collapsed, especially in buildings and transportation sectors. Failure of concrete structure happens due to various reasons. One particular reason is due to aggressive chemical solution attack. Aggressive ammonium nitrate solution can cause failure of concrete structure by causing degradation to it [1]. A small amount of ammonium nitrate solution, approximately 0.5% by weight of cement, is sufficient to causes damage to concrete structures [1]

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