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
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Experimental and Numerical Analysis of Thermal and Hygrometric Characteristics of Building Structures Employing Recycled Plastic Aggregates and Geopolymer Concrete
TL;DR: In this article, a 3D thermal bridge is used to simulate the thermal and hygrometric transient behavior of a typical 3D building structure, employing plastic waste in different percentages and geopolymer concrete.
Journal ArticleDOI
Damping and microstructure of fly ash-based geopolymers
Zhu Pan,Kenan Feng,Kai Gong,Bo Zou,Asghar Habibnejad Korayem,Jay Sanjayan,Wenhui Duan,Francis Gerard Collins +7 more
TL;DR: In this paper, the traditional logarithmic decrement technique was used to measure the damping value of geopolymers, which is the main parameter in relation to vibration reduction in railway sleepers and multi-flue chimneys.
Journal ArticleDOI
Crystallization behavior and mechanical properties of high open porosity dolomite hollow microspheres filled hybrid geopolymer foams
TL;DR: In this paper, a hybrid geopolymer cellular composite foam (DM/KGP) with multi-scale pores was produced by adding dolomite hollow microspheres into geopolymeric matrix via hydrogen peroxide.
Journal ArticleDOI
Study of alkali activated slag as alternative pavement binder
Zengqing Sun,Xiaochen Lin,Xiaochen Lin,Pengfei Liu,Dawei Wang,Dawei Wang,Anya Vollpracht,Markus Oeser +7 more
TL;DR: In this paper, a clinker-free cementitious binder was synthesized through an alkali activation of ground granulated blast furnace slag, and the flexural and compressive strength of the resulting alkali activated slag (AAS) were measured and compared with ordinary Portland cement (OPC) The Aachen Polishing Machine (APM) equipped with real vehicle tires and a British pendulum tester was applied to assess the skid resistance of AAS and OPC after polishing Reaction products were documented using the X-ray Diffraction (XRD)
Journal ArticleDOI
Bond behaviour of reinforcing bars embedded in steel fibre reinforced geopolymer concrete
TL;DR: In this paper, an experimental investigation was carried out to study the influence of steel fibres on the bond strength of geopolymer concrete (GPC), and pull-out tests under monotonic loading were carried out.
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.