The Durability Properties And Mechanical Strength Performance Of Coal Ash Hybrid Geopolymeric Composite

Chung , Kok Yaw (2016) The Durability Properties And Mechanical Strength Performance Of Coal Ash Hybrid Geopolymeric Composite. Masters thesis, Universiti Sains Malaysia.

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    Abstract

    Pengunaan Portland simen dalam penghasilan konkrit semakin meningkat dalam industri pembinaan. Pada masa yang sama, prestasi simen juga menghadapi pelbagai cabaran seperti memerlukan kekuatan yang tinggi, ketahanan yang baik dan sebagainya. Oleh itu, bahan binaan geopolimer telah digunakan untuk mengatasi caraban-cabaran teknikal ini. Kajian eksperimen ini dijalankan untuk mengaji sifat-sifat fizikal dan kimia seperti prestasi ketahanlasakan dan kekuatan mekanikal mortar yang mengandungi Bahan binaan seperti sanga daripada penghasilan besi iaitu GGBS dan sisa habuk daripada pembakaran arang batu iaitu PFA bersamaan aktivasi beralkali daripada simen Portland yang mengandungi batu kapur yang tinggi. Dengan proses aktivasi penggilingan selama 2 jam di antara PFA dan GGBS dalam pengisar bola besi selama dua jam, keputusan kajian ini menunjukan sebanyak 50-60% kandungan simen Portland batu kapur dicampurkan dalam penghasilan mortar, prestasi mortar dari segi mekanikal and ketahanan dapat dipertingkatkan sekiranya berbanding dengan sampel mortar kawalan iaitu mortar yang mengandungi 100% simen Portland dan mortar yang mengandungi 100% bahan hibridan sanga dan abu arang batu. Penyelidikan ini menunjukkan bahawa mortar yang mengandungi 60% simen Portland batu kapur, 32% GGBS dan 8% PFA dapat menunjukkan kekuatan sebanyak 19% pada 7 hari and 34% pada 90 hari lebih tinggi dalam kekuatan mekanik sekiranya berbanding dengan sampel mortar kawalan 100% simen Portland batu kapur. The utilization of Portland cement in concrete production is increasing. At the same time, the performance of Portland cement poses different kind of challenges such as high mechanical strength and good durability performance. Thus, geopolymeric material has been incorporated to overcome these technical challenges. The experimental investigation was conducted to characterize physical and chemical properties of hybrid geopolymer binder material which consist of ground granulated blast furnace slag (GGBS) and pulverised fuel ash (PFA) with the activation of Portland limestone cement (PLC) in different aspect such mechanical strength, durability performance and dimensional stability. By the process inter-grinding of 2 hours duration, it shows that with the inclusion of 50-60% of PLC in the production of mortar, the mechanical and durability performance of mortar mix was found to be exceptionally better as compared to both control mortar mixes produced using 100% PLC and 100% of geopolymeric binder material. The hybrid matrix of cement and geopolymer with the ratio of 60% PLC, 32% of GGBS and 8% of PFA shows improvement of 19% at 7 days and up to 34% at 90 days of increment in compressive strength as compared to control mix with only PLC.

    Item Type: Thesis (Masters)
    Subjects: T Technology > TH Building construction > TH1-9745 Building construction
    Divisions: Pusat Pengajian Perumahan, Bangunan & Perancangan (School of Housing, Building & Planning) > Thesis
    Depositing User: Mr Noorazilan Noordin
    Date Deposited: 20 Feb 2017 12:59
    Last Modified: 22 Mar 2017 09:44
    URI: http://eprints.usm.my/id/eprint/32138

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