Journal ArticleDOI
Geopolymer technology: the current state of the art
Peter Duxson,Ana Fernández-Jiménez,John L. Provis,Grant C. Lukey,Ángel Palomo,J.S.J. van Deventer +5 more
TLDR
A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali activation of aluminosilicates as mentioned in this paper.Abstract:
A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali-activation of aluminosilicates. The fundamental chemical and structural characteristics of geopolymers derived from metakaolin, fly ash and slag are explored in terms of the effects of raw material selection on the properties of geopolymer composites. It is shown that the raw materials and processing conditions are critical in determining the setting behavior, workability and chemical and physical properties of geopolymeric products. The structural and chemical characteristics that are common to all geopolymeric materials are presented, as well as those that are determined by the specific interactions occurring in different systems, providing the ability for tailored design of geopolymers to specific applications in terms of both technical and commercial requirements.read more
Citations
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Journal ArticleDOI
Mechanical properties and microstructure analysis of fly ash geopolymeric recycled concrete.
TL;DR: Experimental results indicate that using alkali-activated fly ash geopolymer as replacement of ordinary Portland cement (OPC) effectively improved the compressive strength.
Journal ArticleDOI
Preparation of metakaolin based geopolymer coatings on metal substrates as thermal barriers
Jadambaa Temuujin,A. Minjigmaa,William D.A. Rickard,Melissa Lee,Iestyn Williams,Arie van Riessen +5 more
TL;DR: In this paper, metakaolin-based geopolymer coatings on both stainless and mild steel substrates have been prepared, and the adhesive strength was found to be > 3.5 MPa.
Journal ArticleDOI
Geopolymer and Portland cement concretes in simulated fire
R. Zhao,Jay Sanjayan +1 more
TL;DR: In this article, a fire exposure test was conducted on two types of concrete concretes, namely, geopolymer and Portland cement concrete, and no spalling was found in either of them, whereas the companion concrete exhibited spalling.
Journal ArticleDOI
Effect of synthesis parameters on the compressive strength of low-calcium ferronickel slag inorganic polymers.
TL;DR: The potential of inorganic polymer technology as a feasible option for the utilisation of certain potentially hazardous mining and metallurgical wastes towards an increased sustainability of the wider minerals sector is discussed.
Journal ArticleDOI
Synthesis factors affecting mechanical properties, microstructure, and chemical composition of red mud–fly ash based geopolymers
TL;DR: In this article, the influence of synthesis factors, including chemical composition of raw materials and curing conditions, on the microstructure and mechanical properties of geopolymers synthesized from red mud (RM) and class F fly ash (FFA) was investigated.
References
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Journal ArticleDOI
Geopolymers : inorganic polymeric new materials
TL;DR: In the last few years, technological progress has been made in the development of new materials such as "geopolymers" and new techniques, such as ''sol-gel'' as mentioned in this paper, opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry.
Book
High-resolution solid-state NMR of silicates and zeolites
Günter Engelhardt,Dieter Michel +1 more
TL;DR: High-Resolution NMR of Solids and Adsorbed Molecules as mentioned in this paper is a well-known technique for high-resolution NMR for solids and adsorbed molecules.
Journal ArticleDOI
Industrially interesting approaches to “low-CO2” cements ☆
TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.
Journal ArticleDOI
The geopolymerisation of alumino-silicate minerals
Hua Xu,J.S.J. van Deventer +1 more
TL;DR: In this paper, the effect of mineral properties on the compressive strength of the synthesized geopolymer was investigated, and it was shown that a wide range of natural Al-Si minerals could serve as potential source materials for the synthesis of geopolymers.