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Waste and Byproducts in Cement-Based Materials

Alkali-activation technology is a process that transforms a solid aluminosilicate precursor(s) into a hardened binder through a reaction that takes place under alkaline …

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A review: Alkali-activated cement and concrete production …

Likewise, re-use of idle equipment from a well-established Portland cement plant shall also be considered. ... Fig. 12 shows an in-situ casting, where blast furnace slag alkali …

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Alkali activation of Australian slag cements

Granulated blast furnace slag supplied by SteelCement Ltd., Australia, was used in the investigation. The compositions of the cement, fly ash, and slag are shown in Table 1.The …

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242-22: Alkali-Activited Cements—Report

This report provides a technical overview of alkali-activated cement (AAC) history; chemistry; and mechanical, physical, and durability properties. It also highlights successful case study …

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Mechanisms of efflorescence of alkali-activated slag

Efflorescence refers to the formation of fluffy white deposits on the surface of materials, such as brick, concrete and stone [1, 2].In Portland cement (PC) systems, the main …

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SUGGESTED SPECIFICATIONS FOR SLAG CEMENT IN …

Slag cement should be used as a pound for pound replacement for portland cement in a concrete mixture. Slag cement is a raw material that is used in a wide variety of commercial and …

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Shrinkage, Cracking, Shrinkage-Reducing and Toughening of Alkali

The flexural strength of alkali slag cement slurry and mortar was reduced by replacing slag powder with fly ash. Content of fine sand less than 20% had little effect on the …

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Repair of ordinary Portland cement concrete using alkali activated slag

The ordinary Portland cement (P.O 42.5) with a specific surface area of 345 m 2 /kg and a density of 3.15 g/cm 3 was used, which was provided by Shijiazhuang Quzhai …

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233R-17: Guide to the Use of Slag Cement in Concrete …

7.10—Reduction of expansion due to alkali-silica reac-tion, p. 15 7.11—Resistance to freezing and thawing, p. 16 7.12—Resistance to deicing chemicals, p. 16 ... of slag cement was …

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Microcracking and strength development of alkali activated slag concrete

The chemical composition and properties of the slag is summarised in Table 1.The term water/binder (w/b) ratio is used instead of the conventional water/cement ratio to describe …

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Alkali-activated Portland blast-furnace slag cement: …

The aim of this article was to study the kinetic, the mechanical development and the microstructure of an alkali-activated blended Portland cement produced from the mixture of a …

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Performance of Slag Cement with Portland‐limestone …

• The alumina in the slag cement can react with more of the finely divided limestone in Type IL cement to form additional carboaluminatehydrates ... Expansion of mortar bars and concrete …

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Accelerated carbonation and structural transformation of …

Alternative cements and production routes are necessary to offset the considerable global CO 2 emissions of Portland cement production. The combination of alkali-activation and …

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Alkali-silica reactivity of lightweight aggregates in alkali …

For alkali-activated slag cement (AAC), an environmentally-friendly material, high-alkalinity activators are normally utilized for activation, which can lead to possible concrete …

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Alkali-Activated Slag Concrete After 5 Years of Alkali

The extent of alkali-silica reaction damage in alkali-activated slag binder systems were investigated and compared to portland cement binder systems. This study continues the …

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Exothermic behavior and drying shrinkage of alkali-activated slag

In cement concrete structures, early-age cracking in the concrete is associated with the release of heat from the cement hydration reaction [10]. According to previous works …

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Greening of Slag Cement Concrete

Hardened concrete containing slag cement can show mottled green or blue-green areas on the surface in the first few days after placement. This temporary condition commonly …

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Freeze–thaw resistance and sorptivity of fine‐grained alkali…

The paper investigates the freeze–thaw resistance and sorptivity behavior of fine-grained alkali-activated concrete cured at ambient temperature. A blended binder system …

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A Low-Autogenous-Shrinkage Alkali-Activated Slag and Fly Ash Concrete

Alkali-activated slag and fly ash (AASF) materials are emerging as promising alternatives to conventional Portland cement. Despite the superior mechanical properties of …

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Characterization of alkali-activated hybrid slag/cement concrete

Therefore, more studies for alkali activated slag concrete are required. In addition, using GBFS with different ratios with OPC in the alkali activated blended cement is needed. …

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Mechanical properties and durability of alkali-activated steel …

Alkali-activated cement (AAC) is either clinker-less or free, and it is also environmentally friendly due to its low carbon footprint and wide range sources. Industrial …

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Development of 3D printable alkali-activated slag-metakaolin concrete

Low-carbon and 3D printable alkali-activated slag-metakaolin cement was developed. ... Digital modeling and intelligent equipment enable the creation of …

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Mechanical properties of alkali-activated slag lightweight …

Test equipment images and diagrams. (a) Test of compressive strength, (b) test of splitting tensile strength, (c) test of flexural strength. 3. ... Morever, Collins stated that there is …

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NewCem | Slag Cement Canada | Slag Concrete | Lafarge …

NewCem® Slag Cement can be used in all concrete applications for increased strength, durability and sustainability. ... consistent chemistry from a reliable source and rapid slag quenching …

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Brief Introduction of Alkali Slag Cement-SinoACA

Alkali slag cement is a chemically activated cementitious material prepared from alkali components and ground water-quenched blast furnace slag as the main raw materials. Slag cement is also called slag portland cement. …

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Use of Alternative Materials in Cement …

The alkali compounds are separately marketed whereas the alkali-free CKD is reused as a component in cement raw feed. Carbonate Sludge Use of a lime-rich sludge from the fertilizer industry in the raw meal of a wet process …

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ALKALI-ACTIVATION KINETICS OF PHOSPHORUS …

Alkali-activation kinetics of phosphorus slag cement using compressive strength data Ceramics – Silikáty 59 (3) 250-260 (2015) 251 3) an accurate measurement of the …

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Influence of environmental stresses on the durability of slag …

Alkali-activated cements have emerged as promising and eco-friendly alternatives to conventional Portland cement (Kinnunen et al., 2019; Komaei et al., 2022).These cement …

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Alkali-activated slag cements: Kinetic studies

This value is 57.6 KJ/mol. AE" value obtained after the induction period for a blast furnace slag, activated with Na^S^ + NaOH at 4%Na20 is the same order ofthat obtained by …

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Sulfate resistance of alkali-activated slag and Portland cement …

A new type of RPC, called as ARPC (Alkali-activated slag based Reactive Powder Concrete), has recently been produced by using alkali activated slag cement (AASC) as an …

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Development of sustainable, high strength slag based alkali …

ABSTRACT. Alkali-activated binder-based composites offer a sustainable alternative to cement-based systems, giving a conservational approach. This research …

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