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]

[thumbnail of Blended_Cement.pdf] PDF
Blended_Cement.pdf
Restricted to Registered users only

Download (465kB)

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
Research Institutes > Institute for Sustainable Building
Depositing User: Prof. Dr. Khairun Azizi Mohd. Azizli
Date Deposited: 13 Dec 2012 11:39
Last Modified: 19 Jan 2017 08:21
URI: http://scholars.utp.edu.my/id/eprint/8523

Actions (login required)

View Item
View Item