Study of Fly Ash (FA) and Palm Oil Fuel Ash (POFA) Geopolymer Mortar Resistance in Acidic Peat Environment

Olivia, Monita; Wulandari, Chrisfela; Sitompul, Iskandar Romey; Darmayanti, Lita; Djauhari, Zulfikar

doi:10.4028/www.scientific.net/msf.841.126

Cited by 11 publications

(4 citation statements)

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“…Moreover, fly ash-based geopolymer mortar showed a very high resistance to acidic peat water, compared to the geopolymer mortar that was incorporated with POFA [379]. Further, the findings of Sreevidya et al [380] monitored the resistance of geopolymer mortar against muriatic and nitric acids and compared a compressive strength value before and after immersion in acid solutions.…”

Section: Acid Resistancementioning

confidence: 99%

A Comprehensive Review on Fly Ash-Based Geopolymer

Luhar

2022

J. Compos. Sci.

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The discovery of an innovative category of inorganic geopolymer composites has generated extensive scientific attention and the kaleidoscopic development of their applications. The escalating concerns over global warming owing to emissions of carbon dioxide (CO2), a primary greenhouse gas, from the ordinary Portland cement industry, may hopefully be mitigated by the development of geopolymer construction composites with a lower carbon footprint. The current manuscript comprehensively reviews the rheological, strength and durability properties of geopolymer composites, along with shedding light on their recent key advancements viz., micro-structures, state-of-the-art applications such as the immobilization of toxic or radioactive wastes, digital geopolymer concrete, 3D-printed fly ash-based geopolymers, hot-pressed and foam geopolymers, etc. They have a crystal-clear role to play in offering a sustainable prospect to the construction industry, as part of the accessible toolkit of building materials—binders, cements, mortars, concretes, etc. Consequently, the present scientometric review manuscript is grist for the mill and aims to contribute as a single key note document assessing exhaustive research findings for establishing the viability of fly ash-based geopolymer composites as the most promising, durable, sustainable, affordable, user and eco-benevolent building materials for the future.

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Section: Acid Resistancementioning

confidence: 99%

A Comprehensive Review on Fly Ash-Based Geopolymer

Luhar

2022

J. Compos. Sci.

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“…The study revealed a better durability performance in comparison to OPC concrete. Another work into the acid resistance of POFA-based alkali-activated mortar was undertaken by Monita et al (Olivia et al 2016) where acid resistance comparison was drawn between fly ash (FA)-based and POFA-based alkali-activated mortar for 180 days. The exposure environment for the mortar specimens was an organic acid water in swampy peat soil, which consists of humic acid that is potentially corrosive to concrete and metal structures.…”

Section: Introductionmentioning

confidence: 99%

POFA-Engineered Alkali-activated Cementitious Composite Performance in Acid Environment

Salami

Johari

Ahmad

et al. 2017

ACT

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The durability performance of palm oil fuel ash engineered alkali-activated cementitious composite (POFA-EACC) mortar exposed to different acid solutions is assessed in this study. 50 mm cubic specimens used for the study were prepared from 100% POFA, alkali-activator (Na 2 SiO 3(aq) /NaOH (aq) ) ratios of 2.5, different molarities (10, 12 and 14 M) of NaOH (aq) and 2% volume fraction of polyvinyl alcohol (PVA) fibres. Specimens were exposed to 10% H 2 SO 4(aq) , 10% HNO 3(aq) and 10% HCl (aq) at pH of 0.56, 0.52 and 0.42 respectively for 3, 6 and 9 months, with unexposed specimens as control. Small changes in compressive strength were identified with POFA mortar specimens during exposure to H 2 SO 4(aq) , while exposure to HNO 3(aq) and HCl (aq) greatly reduced the strength of the POFA mortar specimens. The results were supported through microstructural examinations using SEM, while the characterization was done using XRD and FTIR. The high resistance of POFA-EACC mortar to H 2 SO 4(aq) is the contribution received through the formation of gypsum, which hinders the infiltration of more acids into the matrix microstructure.

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“…Fly Ash [26,27] FA Bottom Ash [28] BA Palm Oil Fuel Ash [29] POFA Volcanic Ash [30] VA Rice Husk Ash [31] RHA Limbah Industri Ground Granulated blast Furnace Slag [32] GGBFS Limbah Industri Metakaolin [33] -Clay [34] -Beberapa faktor seperti Fase kaca, morfologi partikel, kehalusan, struktur mineral, kimia komposisi kimia bahan penyusun memiliki pengaruh yang signifikan terhadap aktivitas terbentuknya senyawa aluminosilikat [35]. Alkali Aktivator yang dapat digunakan ialah natrium silikat (Na2SiO3), natrium hidroksida, dan potassium hydroxide (NaOH and KOH) [36].…”

Section: Klasifikasiunclassified

Kajian Kuat Mekanis Alkali-Activated Mortar (AAM)

Sofyan

2021

kilat

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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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Study of Fly Ash (FA) and Palm Oil Fuel Ash (POFA) Geopolymer Mortar Resistance in Acidic Peat Environment

Cited by 11 publications

References 0 publications

A Comprehensive Review on Fly Ash-Based Geopolymer

A Comprehensive Review on Fly Ash-Based Geopolymer

POFA-Engineered Alkali-activated Cementitious Composite Performance in Acid Environment

Kajian Kuat Mekanis Alkali-Activated Mortar (AAM)

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