Results 91 to 100 of about 15,071 (234)

A Modular Reactor for Thermochemical Energy Storage Examination of Ettringite-Based Materials

open access: yesProceedings, 2019
More attention on renewable energy has been attracted after the achievement of Paris Agreement against climate change. Solar-based technology is supposed to be one of the most promising green energy technologies for residential buildings since its wide ...
Bao Chen   +5 more
doaj   +1 more source

Co-precipitation of ettringite of rapid and slow formation. Consequence: Expansive Synergic Effect. Its demonstration by mortars and concretes

open access: yesMateriales de Construccion, 2011
Several prior papers have shown that enough pozzolans can bring about rapid formation ettringite (from its Al2O3r-). It has likewise been found that the formation rate of this ettringite is higher than the of slower forming ettringite originating from ...
R. Talero
doaj   +1 more source

On the durability of Portland limestone cement: Effect of pH on the thaumasite formation

open access: yesHBRC Journal, 2018
The mechanism of thaumasite formation is studied in a solution of sodium silicate and ettringite stored for 12 months at 7 °C. After 7 months, the mix was carbonated by bubbling CO2 gas and the pH decreased from 11 to 9.5; at the 9th month the pH was ...
Hanaa Y. Ghorab   +3 more
doaj   +1 more source

Environmentally Friendly Pervious Concrete for Treating Deicer-Laden Stormwater: Phase II [PDF]

open access: yes, 2018
In Phase I of this project, graphene oxide (GO)-modified pervious concrete was developed using coal fly ash as the sole binder. The primary objectives of Phase II of this project were (1) to evaluate the stormwater infiltration capacity of GO-modified ...
Shi, Xianming, Xu, Gang
core  

Accelerated swell testing of artificial sulfate bearing lime stabilised cohesive soils [PDF]

open access: yes, 2014
This paper reports on the physico-chemical response of two lime stabilised sulfate bearing artificial soils subject to the European Accelerated Volumetric Swell Test (EN13286-49).
A Bauer   +29 more
core   +2 more sources

Determination of the degree of reaction of fly ash in blended cement pastes [PDF]

open access: yes, 2015
This paper gives a review over methods to determine the degree of reaction for supplementary cementitious materials (SCMs) with focus on Portland cement - fly ash blends only and summarizes and highlights the most important findings which are detailed in
De Belie, Nele   +7 more
core  

Use of Fluidized Bed Combustion Residues and Alumina Powder as Components of Ettringite-Based Aerated Building Elements

open access: yesChemical Engineering Transactions, 2015
The use of industrial wastes and by-products for making construction materials unequivocally gives a pronounced environment-friendly character to their manufacturing process.
A. Telesca   +4 more
doaj   +1 more source

The Effects of Prehydration on Cement Performance

open access: yes, 2010
This study investigated the effects of cement prehydration on cement’s engineering properties. Anhydrous cement was exposed over a saturated KCl solution to maintain 85% RH, for 7 and 28 days.
Black, L   +3 more
core  

Current knowledge of external sulfate attack [PDF]

open access: yes, 2015
This paper offers an update of the current understanding of sulfate attack, with emphasis on the sulfates present in an external water source percolating through, and potentially reacting with, the cement matrix.
ASTM   +26 more
core   +1 more source

Clinkering of calcium sulfoaluminate clinkers: polymorphism of ye'elimite [PDF]

open access: yes, 2018
The manufacture of CSA cements is more environmentally friendly than that of OPC as it releases less CO2. This reduction depends on CSA composition and is due to three factors: i) less emissions from decarbonation in the kilns; ii) lower clinkering ...
Cuesta-Garcia, Ana Maria   +7 more
core  

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