Results 1 to 10 of about 1,616 (166)

Investigating the retarding effect of CAC in alkali-activated cements

open access: yesFrontiers in Materials, 2023
This paper discusses the design of hybrid alkali-activated binders at ambient temperature, specifically the development of mixes based on ground granulated blast-furnace slag (GGBFS) with calcium aluminate cement (CAC) as an additive, aiming to obtain ...
Brant Walkley   +2 more
exaly   +3 more sources

Alkali-activated bentonite clay-limestone cements

open access: yesMagazine of Civil Engineering, 2023
The development of sustainable cements requires the expansion and optimization of the mineral resources base. In this study, the medium-grade bentonite clay and limestone as a promising, available, low carbon, and abundant starting materials, were ...
Rakhimova Nailia   +2 more
doaj   +1 more source

A review: Alkali-activated cement and concrete production technologies available in the industry

open access: yesHeliyon, 2023
A growing interest in alternative cements has emerged with the sole purpose of reducing the environmental footprint associated with cement production. One of the promising alternatives is to use non-carbonate materials such as alkali-activated materials.
Isabel Pol Segura   +5 more
doaj   +1 more source

Assessment of the Corrosion of Steel Embedded in an Alkali-Activated Hybrid Concrete Exposed to Chlorides

open access: yesMolecules, 2022
Hybrid alkali-activated cements (HAACs), also known as cements with high percentages of alkali-activated supplementary materials, are alternative cements that combine the advantages of ordinary Portland cement (OPC) and alkali-activated systems.
William Valencia-Saavedra   +2 more
doaj   +1 more source

The influence of curing temperature on the strength and phase assemblage of hybrid cements based on GGBFS/FA blends

open access: yesFrontiers in Materials, 2022
Hybrid cements are composites made of Portland cement or Portland clinker and one or more supplementary cementitious materials like slag, fly ash or metakaolin, activated with an alkali salt.
Ricky Henning   +6 more
doaj   +1 more source

Relationship between Chloride Migration, Bulk Electrical Conductivity and Formation Factor of Blended Cement Pastes

open access: yesNordic Concrete Research, 2023
This study investigates the links between the non-steady-state chloride migration coefficient, the bulk electrical conductivity and the formation factor of blended cement paste specimens.
Ranger Maxime, Hasholt Marianne Tange
doaj   +1 more source

Composite Cements Using Ground Granulated Blast Furnace Slag, Fly Ash, and Geothermal Silica with Alkali Activation

open access: yesBuildings, 2023
In recent decades, alkali activated and blended cements have attracted great interest worldwide due to their advantages of low energy cost, high strength, and good durability.
Andres Salas Montoya   +4 more
doaj   +1 more source

Geopolymer Cement Based on Alkali Activated SlagGeopolymer Cement Based on Alkali Activated Slag

open access: yes, 2021
The aim of this investigation is to prepare geopolymer cement by mixing various amounts of granulated blast furnace slag (GBFS) with Fly ash (FA) and cement kiln dust (CKD). Seven blends are prepared using 100 % slag , 95% slag+5% CKD or fly ash , 90% slag + 10% CKD or Fly ash and 85% slag + 15% CKD or Fly ash .
Nabil, Nourhan   +2 more
openaire   +1 more source

Alkali-Activated Hybrid Cement from Mineral Wool Fiber Waste and OPC

open access: yesBuildings, 2023
Cements to replace ordinary portland cement (OPC) are currently being studied due to the high environmental costs of OPC production. One viable alternative is alkali-activated cements, which can be made from pozzolanic materials such as stone wool fiber ...
Diego A. Gutiérrez-Orrego   +2 more
doaj   +1 more source

Reaction products, structure and properties of alkali-activated metakaolin cements incorporated with supplementary materials – a review

open access: yesJournal of Materials Research and Technology, 2019
Incorporation of mineral blending and/or modifying additions which are single- or multi-component materials is one of the main trends in the development of both Portland clinker-based and non-clinker cements.
Nailia R. Rakhimova, Ravil Z. Rakhimov
doaj   +1 more source

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