scispace - formally typeset
Search or ask a question
Topic

Geopolymer

About: Geopolymer is a research topic. Over the lifetime, 6776 publications have been published within this topic receiving 157991 citations. The topic is also known as: geopolymers.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, metakaolin-based geopolymers have been prepared and a water-soluble polymer, polyethylene glycol (PEG), has been added in different percentages to obtain organic-inorganic hybrid polymers.
Abstract: Geopolymers are aluminosilicate inorganic polymers, obtained from the alkali activation of powders containing SiO2+Al2O3>80wt%, mainly proposed as environmentally friendly building materials. In this work, metakaolin-based geopolymers have been prepared and a water-soluble polymer, polyethylene glycol (PEG), has been added in different percentages to obtain organic-inorganic hybrid geopolymers. The influence of both the polymer amount and aging time on the structure and the mechanical behavior of the materials were investigated. FTIR spectroscopy allowed us to follow the evolution of the aluminosilicate framework during the geopolymerization process. This analysis revealed that PEG leads to a network which is rich in Al-O-Si bonds and forms H-bonds with the inorganic phase. SEM microscope showed that the two phases are interpenetrated on micrometric scales. Traction and bending tests have been carried out on appropriate samples to investigate the mechanical behavior of the obtained hybrids, showing that both PEG content and aging time affect the material behavior.

64 citations

Journal ArticleDOI
TL;DR: In this paper, metakaolin was used to synthesize metaka-based polyopolymers for hardening and burning and the phase transformation after burning was measured by X-ray diffraction and quantified.

64 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of activator on the interaction mechanisms between slag and low-calcium fly ash (FA-F) during alkaline activation was investigated by means of X-ray diffraction with Rietveld analysis, scanning electron microscopy, and energy-dispersive spectroscopy (SEM/EDS).

64 citations

Patent
30 Jan 2004
TL;DR: Cementitious materials including stainless steel slag and geopolymer can be added to conventional cement compositions, such as Portland cement, as a partial or total replacement for conventional cement materials as discussed by the authors.
Abstract: Cementitious materials including stainless steel slag and geopolymer can be added to conventional cement compositions, such as Portland cement, as a partial or total replacement for conventional cement materials The stainless steel slag may comprise silicates and/or oxides of calcium, silicon, magnesium, iron, aluminum, manganese, titanium, sulfur, chromium and/or nickel The geopolymer may comprise aluminum silicate and/or magnesium silicate In a preferred embodiment, curing of concrete materials by the action of water on the cementitious materials is enhanced with the addition of an activator component selected from calcium bromide, calcium nitrate, calcium nitrite, calcium chloride, calcium oxide, and sodium bromide

64 citations

Journal ArticleDOI
TL;DR: In this article, the characterization of the behavior of inorganic foams in aqueous media is defined as a function of various parameters (initial pH value of the solution, alkaline element and aging of the foam).

64 citations


Network Information
Related Topics (5)
Microstructure
148.6K papers, 2.2M citations
80% related
Ultimate tensile strength
129.2K papers, 2.1M citations
79% related
Nanocomposite
71.3K papers, 1.9M citations
78% related
Corrosion
152.8K papers, 1.9M citations
75% related
Alloy
171.8K papers, 1.7M citations
74% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,059
20221,744
2021990
2020891
2019752
2018658