Incorporation of Al in CASH gels with various Ca/Si and Al/Si ratio: Microstructural and structural characteristics with DTA/TG, XRD, FTIR and TEM analysis

E Kapeluszna, Ł Kotwica, A Różycka, Ł Gołek - Construction and Building …, 2017 - Elsevier
Abstract Systems of different Ca/Si and Al/Si molar ratios were investigated. Incorporation of
Al increases main basal spacing, amount of bounded water and decreases crystallinity of C …

Influence of molarity and alkali mixture ratio on ambient temperature cured waste cement concrete based geopolymer mortar

SK Das, S Shrivastava - Construction and Building Materials, 2021 - Elsevier
Generation of an enormous amount of construction and demolition (C&D) waste due to rapid
growth in the infrastructure segment globally is a matter of dire concern for the present …

Use of infrared spectroscopy to study geopolymerization of heterogeneous amorphous aluminosilicates

WKW Lee, JSJ Van Deventer - Langmuir, 2003 - ACS Publications
Geopolymerization is a general term to describe all the chemical processes that are involved
in reacting aluminosilicates with aqueous alkaline solutions to produce a new class of …

The effects of inorganic salt contamination on the strength and durability of geopolymers

WKW Lee, JSJ Van Deventer - Colloids and Surfaces A: Physicochemical …, 2002 - Elsevier
Two geopolymer systems were prepared by alkali activation of fly ash and kaolin at room
temperature with alkaline silicate solutions. System I was synthesised using a less …

Structural reorganisation of class F fly ash in alkaline silicate solutions

WKW Lee, JSJ Van Deventer - Colloids and Surfaces A: Physicochemical …, 2002 - Elsevier
Class F fly ash was leached in alkaline solutions (pH∼ 13.95) of varying concentrations of
soluble silicates at 20° C. The elemental compositions of the leached solutions were studied …

Thermal activation of albite for the synthesis of one‐part mix geopolymers

D Feng, JL Provis… - Journal of the American …, 2012 - Wiley Online Library
Precursors for the preparation of one‐part geopolymers are synthesized by thermal
activation of albite with sodium hydroxide and sodium carbonate, then cooling and crushing …

A comparative study of high-and low-Al2O3 fly ash based-geopolymers: The role of mix proportion factors and curing temperature

W Zhou, C Yan, P Duan, Y Liu, Z Zhang, X Qiu, D Li - Materials & Design, 2016 - Elsevier
Developing sustainable and low-CO 2 emission construction materials is of essential
importance for reducing the environmental footprint of cement industry. In this work, ordinary …

Identification of silicooxygen rings in SiO2 based on IR spectra

M Sitarz, M Handke, W Mozgawa - … Acta Part A: Molecular and Biomolecular …, 2000 - Elsevier
In this work application of IR spectra for the determination of silcooxygen ring types in
framework silicates structures has been presented. Results of the spectra interpretation for …

Effect of fly ash characteristics on delayed high-strength development of geopolymers

JG Jang, HK Lee - Construction and Building Materials, 2016 - Elsevier
This paper investigates the effect of fly ash characteristics on the strength development of fly
ash-based geopolymer, and reports an observation of delayed high-strength development of …

The structure of simple silicate glasses in the light of Middle Infrared spectroscopy studies

M Sitarz - Journal of non-crystalline solids, 2011 - Elsevier
The aim of the work is to determine the internal structure of simple silicate glasses based on
structural studies. Due to the absence of the long-range order, the X-ray methods usually …