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Heat of hydration of blended cement containing treated ground palm oil fuel ash

Chandara, Chea and Mohd Azizli, Khairun Azizi and Ahmad, Zainal Arifin and Saiyid Hashim, Syed Fuad and Etsuo , Sakai (2012) Heat of hydration of blended cement containing treated ground palm oil fuel ash. [Citation Index Journal]

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Abstract

The aim of this paper is to study the heat of hydration of blended cement containing ground palm oil fuel ash and treated ground palm oil fuel ash (without unburned carbon), with and without superplasticizer (SP). The palm oil fuel ash (POFA) was ground in a ball mill to produce ground POFA (GPOFA). Unburned carbon, which is a major part of unburned residue in GPOFA, was removed by heat treatment at 500 C for 1 h, producing treated GPOFA (TGPOFA). This result shows that the total heat of hydration of blended cement pastes containing GPOFA and TGPOFA are lower than OPC paste, proving that GPOFA and TGPOFA are good pozzolanic materials which can be used in massive concrete for preventing volume change and micro-cracks (caused by thermal stresses). Also, GPOFA and TGPOFA have low pozzolanic reactivity at the early hydration. However, TGPOFA has better pozzolanic reactivity than GPOFA due to its higher content of glassy phases. The hydration peak is retarded when SP is added into cement paste, but the total heat of hydration at the age of 7 days is no different even with the addition of SP. 2011 Elsevier Ltd. All rights reserved.

Item Type:Citation Index Journal
Subjects:T Technology > T Technology (General)
Departments / MOR / COE:Departments > Chemical Engineering
Mission Oriented Research > Sustainable Development
ID Code:8523
Deposited By: Prof. Dr. Khairun Azizi Mohd. Azizli
Deposited On:13 Dec 2012 11:39
Last Modified:19 Jan 2017 08:21

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