Study On Pozzolanic Reaction And Fluidity Of Blended Cement Containing Treated Palm Oil Fuel Ash As Mineral Admixture

Simple item page
dc.contributor.authorChea, Chandara
dc.date.accessioned2018-08-28T08:17:23Z
dc.date.available2018-08-28T08:17:23Z
dc.date.issued2011-06
dc.description.abstractThe aim of this work is to study on pozzolanic reaction and fluidity of blended cement containing treated palm oil fuel ash as mineral admixture. Palm oil fuel ash (POFA) was ground in a ball mill to produce ground palm oil fuel ash (GPOFA), and further treated at 500 °C for 1 hour to remove the unburned carbon, namely treated ground palm oil fuel ash (TGPOFA). Raw materials have been characterized in terms of chemical composition, carbon content, mineral composition, morphology and physical properties. The fluidity, heat of hydration and pozzolanic reactivity of blended cement containing GPOFA and TGPOFA as well as pozzolanic reactivity in GPOFA/TGPOFA lime system were investigated, while the mechanical properties of blended cement such as standard consistency, setting time and mortar’s strength were also studied. The results show that the heat treatment has reduced unburned carbon content from 6.01% to 0.07% with the increase in glassy phases from 67.22% to 73.89%, without causing the agglomeration of particles, improving the fluidity and pozzolanic reactivity of TGPOFA in blended cement. The fluidity of blended cement pastes containing TGPOFA (10%-40%) are approaching the fluidity of OPC paste without superplasticizer (SP), when SP at dosage of 0.2% is added to blended cement pastes. TGPOFA has low pozzolanic reactivity at the early stage of hydration with low total heat of hydration at 7 days. To achieve compressive strength of mortar higher than 75% of OPC mortar at the age of 28 and 91 days (long term), as specified by ASTM C 618, TGPOFA can be used as mineral admixture in blended cement up to the replacement ratio of 20% and 40%, respectively. It can be concluded that the removal of unburned carbon results in the improvement of fluidity and pozzolanic reaction of blended cement containing TGPOFA as mineral admixture.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6443
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPozzolanic reaction and fluidity of blended cementen_US
dc.subjectcontaining treated palm oil fuel ashen_US
dc.titleStudy On Pozzolanic Reaction And Fluidity Of Blended Cement Containing Treated Palm Oil Fuel Ash As Mineral Admixtureen_US
dc.typeThesisen_US
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral - Tesis