نتایج جستجو برای: Geopolymer Paste

تعداد نتایج: 10748  

2012
Kushal Ghosh Partha Ghosh

The objectives of the present research is to appreciate the effect of synthesizing parameters on setting time and workability of Fly ash based geopolymer paste . Locally available low calcium fly ash from a thermal power plant located near Kolkata, India, was used . Fly ash used are lignite coal based and falls under class F category. The broad areas of present research include: Manufacturing o...

2015
N. Bhavanishankar Rao

In this study, the effect of glass powder (GP) and ground granulated blast furnace slag (GGBS) on the compressive strength of Fly ash based geopolymer concrete has been investigated. The mass ratio of fine aggregate (fA) to coarse aggregate (CA) was maintained constant. NaOH flakes dissolved in water was used as activating liquid and mixed with fly ash (FA) to produce geopolymer paste or cement...

2013
Debabrata Dutta Somnath Ghosh

In this paper, synthesis of geopolymer from fly ash with sodium hydroxide as activator was studied. Fly ash was replaced by Lime stone dust in various proportions (10% and 15%) where Fly ash was used as source material for synthesis of geopolymer. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solutions were mixed maintaining a silicate modulus (Na2O / SiO2) at 1. Scanning electron micro...

Geopolymer paste is an innovative construction material which shall be produced by chemical action of inorganic molecules. It is a more environmentally friendly alternative to conventional Portland cement which is abundantly available worldwide. In this study, the influence of different alkaline activators (Na and K) on the mechanical and thermal behaviors of metakaolin-based geopolymer was inv...

2012
Mohd Mustafa Al Bakri Abdullah Liyana Jamaludin Kamarudin Hussin Mohamed Bnhussain Che Mohd Ruzaidi Ghazali Mohd Izzat Ahmad

This paper presents the results of a study on the effect of temperature on geopolymers manufactured using pozzolanic materials (fly ash). In this paper, we report on our investigation of the performance of porous geopolymers made with fly ash after exposure to temperatures from 600 °C up to 1000 °C. The research methodology consisted of pozzolanic materials (fly ash) synthesized with a mixture ...

2013
Xueying Li Xinwei Ma Shoujie Zhang Enzu Zheng

This paper presents workability, compressive strength and microstructure for geopolymer pastes and mortars made of class C fly ash at mass ratios of water-to-fly ash from 0.30 to 0.35. Fluidity was in the range of 145-173 mm for pastes and 131-136 mm for mortars. The highest strengths of paste and mortar were 58 MPa and 85 MPa when they were cured at 70 °C for 24 h. In XRD patterns, unreacted q...

2016
Alberto Strini Giuseppina Roviello Laura Ricciotti Claudio Ferone Francesco Messina Luca Schiavi Davide Corsaro Raffaele Cioffi

This study presents an experimental overview for the development of photocatalytic materials based on geopolymer binders as catalyst support matrices. Particularly, geopolymer matrices obtained from different solid precursors (fly ash and metakaolin), composite systems (siloxane-hybrid, foamed hybrid), and curing temperatures (room temperature and 60 °C) were investigated for the same photocata...

Journal: :Journal of materials research and technology 2022

This paper explores hybrid alkaline cement composites with high content over 50%. Calcium (Ca) accelerates the strength development and improves compressive of geopolymer. However, mixing proportion Ca in geopolymer has been limited because significantly decreases flow fresh study resolves decline issue by a part initial water before adding it into metakaolin-based geopolymer, which is named (H...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Journal: :IOP Conference Series: Materials Science and Engineering 2020

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