Engineering properties and carbon footprint of ground granulated blast-furnace slag-palm oil fuel ash-based structural geopolymer concrete

Mortar salah satu material yang memiliki manfaat yang beraneka ragam dalam konstruksi bangunan. Sejauh ini, mortar konvensional digunakan sebagai bahan plester atau coating pada bangunan. Bahan pengikat utama mortar pada dasarnya masih mengandalkan semen. Pemanfaatan Batu bara pada pembangkit listrik tenaga uap masih menjadi salah satu arus utama sebagai pendukung kebutuhan energi listrik. Penumpukan hasil sisa pembakaran batu bara seperti fly ash dan bottom ash berpotensi mengganggu stabilitas Ekosistem lingkungan. Alkali-Activated mortar dengan mengandalkan larutan alkali activator yang direaksikan dengan material pozzolanic seperti fly ash, Ground Granulated Blast Furnace Slag (GGBFS), Palm Oil Fuel Ash (POFA)ldan lain-lain dapat menjadi salah satu solusi dalam mengurangi limbah fly-ash yang menumpuk. Dalam beberapa riset riset terdahulu idealnya kontrol mutu dari Alkali Activated mortar dapat ditinjiau pada kekuatan mekanisnya seperti kuat tekan dan lentur Dalam artikel ini akan ditinjau bagaimana kekuatan mekanis pada beberapa jenis Alkali-Activated Mortar. Dari studi-studi yang akan dibahas tersebut akan ditarik sebuah kesimpulan berdasarkan data-data pengujian mekanis yan pada akhirnya dapat memberi rekomendasi tentang bagaimana performa mekanis pada Alkali-Activated mortar.

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Strength and Microstructural Performance of Nano-SiO2 Gel (NSG) Infused Alkaline Activated Ground Blast Furnace Slag-Ultrafine Palm Oil Fuel Ash (AAGU) Based Mortar

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.856.280 ◽

2013 ◽

Vol 856 ◽

pp. 280-284 ◽

Cited By ~ 7

Author(s):

Moruf Olalekan Yusuf ◽

Megat Azmi Megat Johari ◽

Zainal Arifin Ahmad ◽

Mohammed Maslehuddin

Keyword(s):

Compressive Strength ◽

Blast Furnace ◽

Palm Oil ◽

Blast Furnace Slag ◽

Microstructural Characterization ◽

Palm Oil Fuel Ash ◽

Fuel Ash ◽

Product Homogeneity ◽

Oil Fuel ◽

Furnace Slag

The aim of this paper is to study the performance of infused nanoSiO2gel (NSG) on the developed alkaline activated binary blending of ground blast furnace slag (GBFS) and ultrafine palm oil fuel ash (UPOFA) based mortar (AAGU) using the constant mass of combined activators (10 M NaOHaq+Na2SiO3aq(Ms = SiO2/Na2O=3.3)). The methods include using the 3-day compressive strength results and microstructural characterization (SEM+EDX and FTIR). The finding revealed that the compressive strength of the mortar increased with NSG and the maximum strength achieved was 57.3 MPa signifying 21% strength gain compared to NSG-free sample. The NSG also played the role of microcracks and pore fillings, increased the product homogeneity and reduced its amorphousity due to silicate re-organization but has no effects on Si-Al substitution.

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Strength and microstructure of alkali-activated binary blended binder containing palm oil fuel ash and ground blast-furnace slag

Construction and Building Materials ◽

10.1016/j.conbuildmat.2013.11.012 ◽

2014 ◽

Vol 52 ◽

pp. 504-510 ◽

Cited By ~ 66

Author(s):

Moruf Olalekan Yusuf ◽

Megat Azmi Megat Johari ◽

Zainal Arifin Ahmad ◽

Mohammed Maslehuddin

Keyword(s):

Blast Furnace ◽

Palm Oil ◽

Blast Furnace Slag ◽

Palm Oil Fuel Ash ◽

Fuel Ash ◽

Oil Fuel ◽

Furnace Slag ◽

Alkali Activated

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Effects of H2O/Na2O molar ratio on the strength of alkaline activated ground blast furnace slag-ultrafine palm oil fuel ash based concrete

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.09.078 ◽

2014 ◽

Vol 56 ◽

pp. 158-164 ◽

Cited By ~ 37

Author(s):

Moruf Olalekan Yusuf ◽

Megat Azmi Megat Johari ◽

Zainal Arifin Ahmad ◽

Mohammed Maslehuddin

Keyword(s):

Blast Furnace ◽

Palm Oil ◽

Blast Furnace Slag ◽

Molar Ratio ◽

Palm Oil Fuel Ash ◽

Fuel Ash ◽

Oil Fuel ◽

Furnace Slag

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Influence of Molarity and Chemical Composition on the Development of Compressive Strength in POFA Based Geopolymer Mortar

Advances in Materials Science and Engineering ◽

10.1155/2015/647071 ◽

2015 ◽

Vol 2015 ◽

pp. 1-15 ◽

Cited By ~ 19

Author(s):

S. M. Alamgir Kabir ◽

U. Johnson Alengaram ◽

Mohd Zamin Jumaat ◽

Afia Sharmin ◽

Azizul Islam

Keyword(s):

Compressive Strength ◽

Blast Furnace Slag ◽

Palm Oil Fuel Ash ◽

Manufactured Sand ◽

Granulated Blast Furnace Slag ◽

Mix Proportion ◽

Geopolymer Matrix ◽

Fuel Ash ◽

Oil Fuel ◽

Furnace Slag

The investigation concerns the use of the optimum mix proportion of two locally available pozzolanic waste materials, namely, ground granulated blast furnace slag (GGBS) and palm oil fuel ash (POFA), together with metakaolin (MK) as binders. In addition, another local waste material, manufactured sand (M-sand), was used as a replacement for conventional sand in the development of green geopolymer mortar. Twenty-four mortar mixtures were designed with varying binder contents and alkaline activators. The oven dry curing was also kept consistent for all the mix proportions at a temperature of 65°C for 24 hours. The highest 28-day compressive strength of about 48 MPa was obtained for the mortar containing 20% of MK, 35% of GGBS, and 45% of POFA. The increment of MK beyond 20% leads to reduction of the compressive strength. The GGBS replacement beyond 35% also reduced the compressive strength. The entire specimen achieved average 80% of the 28-day strength at the age of 3 days. The density decreased with the increase of POFA percentage. The finding of this research by using the combination of MK, GGBS, and POFA as binders to wholly replace conventional ordinary Portland cement would lead to alternate eco-friendly geopolymer matrix.

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