Results 21 to 30 of about 55,242 (253)

Alkali-aggregate reaction in alkali-activated cement concretes [PDF]

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract The paper discloses the results of a study on structure formation processes in the interfacial transition zone “cement stone − aggregate” of the alkali-activated cement concretes. The results indicate the importance of the content of Al2O3 in the cement and aggregate.
P Krivenko   +4 more
openaire   +1 more source

Hydro-mechanical behaviour of alkali-activated binder treated soil [PDF]

open access: yesE3S Web of Conferences, 2020
An experimental investigation on the mechanical improvement induced by alkali-activated binder based on the activation of a fluidal bed combustion fly ash on a clayey soil has been developed.
Vitale Enza   +3 more
doaj   +1 more source

Thermal stability and leaching behavior of alkali-activated slag doped with electric arc furnace dust [PDF]

open access: yesScience of Sintering
The study presented in this paper explores the simultaneous valorization of electric arc furnace slag (EAFS) and electric arc furnace dust (EAFD) through an alkali activation process, as well as the thermal stability of the resulting product.
Tadić Nebojša   +4 more
doaj   +1 more source

Assessment of Chemical Treatment on Hemp Fiber Utilized as Reinforcement in Polymer Composites: Association of Thermal Degradation and Activation Energy of Fiber

open access: yesJournal of Natural Fibers, 2022
The primary purpose of the research is to improve the surface of hemp fibers chemically. The outcome of different chemical treatments of fibers on their chemical, morphological, physical, and thermal properties has been studied.
Priyanka Soni, Shishir Sinha
doaj   +1 more source

Alkali-activated materials [PDF]

open access: yesCement and Concrete Research, 2018
© 2017 Elsevier Ltd.This paper, which forms part of the UNEP White Papers series on Eco-Efficient Cements, provides a brief discussion of the class of cementing materials known as 'alkali-activated binders', which are identified to have potential for utilization as a key component of a sustainable future global construction materials industry.
openaire   +2 more sources

Development of unfired earthen building materials using muscovite rich soils and alkali activators

open access: yesCase Studies in Construction Materials, 2019
Most studies have focused on the alkali activation of thermally activated kaolinitic clays for the production of innovative building materials. Whilst the widespread use of these minerals may be hindered due to geographical availability; a combination of
Emeso Beckley Ojo   +3 more
doaj   +1 more source

Carbonation of Alkali-Activated Materials: A Review

open access: yesMaterials, 2023
This paper presents a literature review on the effects of accelerated carbonation on alkali-activated materials. It attempts to provide a greater understanding of the influence of CO2 curing on the chemical and physical properties of various types of alkali-activated binders used in pastes, mortars, and concrete.
Ghandy Lamaa   +3 more
openaire   +2 more sources

Instantaneous activation energy of alkali activated materials

open access: yesRILEM Technical Letters, 2019
Alkali activated materials (AAM) are generally cured at high temperatures to compensate for the low reaction rate. Higher temperature accelerates the reaction of AAM as in cement-based materials and this effect is generally predicted using Arrhenius ...
Shiju Joseph   +2 more
doaj   +1 more source

Single Alkali Metal Ion-Activated Porous Carbon With Heteroatom Doping for Supercapacitor Electrode

open access: yesFrontiers in Chemistry, 2020
A single alkali metal ion activation method was used to prepare sulfur-doped microporous carbons. A series of alkali metal ions such as Li+, Na+, K+, and Cs+ was used in the polymerization process of 3-hydroxythiophenol and formaldehyde to obtain metal ...
Changshui Wang
doaj   +1 more source

Experimental research on the development of geopolymer materials using Romanian local materials [PDF]

open access: yesConstructii: Journal of Civil Engineering Research, 2018
The demand for concrete and also for the current infrastructure facilities development is experiencing worldwide exponential growth. Environmental issues associated with the production of Portland cement are very well known and therefore they are ...
Adrian LĂZĂRESCU   +4 more
doaj  

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