scispace - formally typeset
Open AccessJournal ArticleDOI

Effects of an eco-silica source based activator on functional alkali activated lightweight composites

Xu Gao, +1 more
- 10 Aug 2019 - 
- Vol. 215, pp 686-695
TLDR
In this article, an eco-olivine nano-silica is applied to prepare sustainable silicate based activators to replace commercial sodium silicates, and the results show the positive effect of density and Na2O content on strength.
About: 
This article is published in Construction and Building Materials.The article was published on 2019-08-10 and is currently open access. It has received 8 citations till now. The article focuses on the topics: Portland cement.

read more

Figures
Citations
More filters
Journal ArticleDOI

A facile manufacture of highly adsorptive aggregates using steel slag and porous expanded silica for phosphorus removal

Fan Wu, +3 more
- 01 Mar 2021 - 
TL;DR: In this paper, a porous and sustainable adsorptive aggregate combining both chemical and physical adsorption capacities was developed, and the results showed that the bulk density of the resulting aggregates varies from 570 kg/m3 to 882 kg/ m3, with a bulk crushing strength of up to 5.1 MPa.
Journal ArticleDOI

Insulation efficiency of alkali-activated lightweight mortars containing different ratios of binder/expanded perlite fine aggregate

Alaa M. Rashad, +2 more
- 01 Sep 2021 - 
TL;DR: In this paper, an attempt has been made to produce insulating materials based on alkali-activated slag (AAS) mortars, free from any foaming/blowing agent, with a good balance between suitable compressive strength and low thermal conductivity.
Book ChapterDOI

Nonconventional alkaline activating solutions for alkali-activated mortars and concretes

TL;DR: In this article , the authors present an overview of the production, characterization, application, and environmental aspects of alkali-activated mortars and concretes produced using nonconventional alkaline activating solutions.
References
More filters
Journal ArticleDOI

Understanding the relationship between geopolymer composition, microstructure and mechanical properties

Peter Duxson, +5 more
- 01 Nov 2005 - 
TL;DR: In this paper, a mechanistic model accounting for reduced structural reorganization and densification in the microstructure of geopolymer gels with high concentrations of soluble silicon in the activating solution has been proposed.
Journal ArticleDOI

Carbon dioxide equivalent (CO2-e) emissions: A comparison between geopolymer and OPC cement concrete

Louise Turner, +1 more
- 01 Jun 2013 - 
TL;DR: In this article, the authors present the results of comprehensive carbon footprint estimates for both geopolymer and OPC concrete, including energy expending activities associated with mining and transport of raw materials, manufacturing and concrete construction.
Journal ArticleDOI

A review: The comparison between alkali-activated slag (Si + Ca) and metakaolin (Si + Al) cements

Chao Li, +3 more
- 01 Sep 2010 - 
TL;DR: In this article, the authors compare the properties of slag and metakaolin cements, including the general properties of metakaol and slag, hydration products reaction mechanisms, and the role of Ca and Al.
Journal ArticleDOI

Alkali-activated fly ash/slag cements: Strength behaviour and hydration products

Francisca Puertas, +3 more
- 01 Oct 2000 - 
TL;DR: The activation of fly ash/slag pastes with NaOH solutions has been studied in this paper, where the authors established the equations of the models describing the mechanical behaviour of these pastes as a function of the factors and levels considered.
Journal ArticleDOI

The use of thermal analysis in assessing the effect of temperature on a cement paste

Lucia Alarcon-Ruiz, +3 more
- 01 Mar 2005 - 
TL;DR: In this article, the effect of temperature in the mineralogical composition of cement hydration products has been studied using thermogravimetric analysis (TGA) and DTG curves, which can be used to determine fire conditions and the consequent deterioration expected in the cement paste.
Related Papers (5)

Characterization of alkali activated slag–fly ash blends containing nano-silica

X Xu Gao, +2 more
- 15 Nov 2015 - 

Influence of sodium silicate powder silica modulus for mechanical and chemical properties of dry-mix alkali-activated slag mortar

Tero Luukkonen, +7 more
- 10 Feb 2020 - 

Investigation on the roles of solution-based alkali and silica in activated low-calcium fly ash and slag blends

K. Chiranjeevi Reddy, +1 more
- 01 Oct 2021 - 

Properties and characterization of green one-part geopolymer activated by composite activators

Cong Ma, +4 more
- 20 May 2019 - 

Effect of nanosilica-based activators on the performance of an alkali-activated fly ash binder

Erich D. Rodríguez, +5 more
- 01 Jan 2013 - 
Frequently Asked Questions (1)
Q1. What are the contributions in "Effects of an eco-silica source based activator on functional alkali activated lightweight composites" ?

In this paper, alkali activated slag-fly ash lightweight composites with moderate densities between around 1200 and 1500 kg/m are prepared and characterized. The calculation on the carbon footprint shows an evident advantage of using alkali activated materials to replace Portland cement, also the utilization of olivine nano-silica further reduces the carbon emission of the activator by around 25 %.