Long Term Performance of Alkali Activated Slag Concrete

centration level of Na2O is 5% by slag mass in the AAS mix. The design for each mix was for a 28-day strength of 40 + 10 MPa. A water binder ratio (w/b) and water solid ratio (w/s) of 52% and 46% were used to prepare the AASC1 respectively. As comparison, the data of alkali activated slag concrete (AASC2) and Portland Cement concrete (Control) from

Flexural Fatigue Life Reliability of Alkali-Activated Slag ...

Studying the application of alkali-activated slag concrete for roads in cold areas is of great significance for promoting and developing green building materials. In this study, the effect of freeze-thaw damage on the flexural fatigue properties of alkali-activated slag concrete was studied and the fatigue life of alkali-activated slag concrete with various degrees of damage …

Autogenous Deformation of Alkali-Activated Blast Furnace ...

Deformations of alkali-activated slag concrete (AASC) with high MgO and Al 2 O 3 content, subjected to variable curing temperature were studied. Sodium silicate and sodium carbonate were used as alkali activators. The obtained results showed development of deformations consisting of both shrinkage and expansion. Shrinkage appeared not to be …

pakistan alkali activated slag cement processing …

slag processing equipment manufacturers. STEEL MILL SERVICES Slag Levy has specialized in slag handling and processing since the company Molten slag is subjected to jet streams of water or air Get Price And Support Online slag grinder manufacturer wildpeppersf pakistan alkali activated slag cement processing equipment 21 Apr 2015 Slag Grinding Machine …

Professor John L Provis | Materials Science and ...

Myers RJ, Bernal Lopez S & Provis JL A thermodynamic model for use in the CaO-(Na2O, Al2O3)-SiO2-H2O and alkali-activated slag cement systems: CNASH_ss. 34th Annual Conference on Cement and Concrete Science, Sheffield. Sheffield, UK, 14 September 2014 - 16 September 2014.

Frontiers | Alkali-Activated Binders From Waste ...

In view of creating low-impact materials for the building industry, the fostering of alkali-activated binder gains high importance. Metakaolin can successfully be activated with alkalis at room temperature, but the contemporary use of wastes to create mixed binders can further increase the environmental benefits. Bottom ashes obtained from the incineration of …

An overview of the chemistry of alkali-activated cement ...

2.1. Introduction: alkaline cements. Portland cement is the construction material par excellence. Its manufacture, however, is energy-intensive (requiring kiln temperatures of 1450–1550 °C) and has other significant environmental consequences (Taylor, 1990; Habert, 2103).Generating nearly one tonne of CO 2 for each tonne of Portland cement produced, this …

Thermal degradation of potassium-activated ternary slag ...

1. Introduction. Alkali-activated binders (AAB) are attracting increasing attention in academia and industry as a promising alternative to ordinary Portland cement (OPC) owing to their excellent mechanical and durability performance, as well as remarkable thermal and fire resistance,, .Moreover, the comparatively low energy consumption and carbon emission in the …

Effect of Sodium Aluminate Dosage as a Solid Alkaline ...

Extensive research into alkali-activated slag as a green gel material to substitute for cement has been done because of the advantages of low-carbon dioxide emissions and recycling of industrial solid waste. Alkali-activated slag usually has good mechanical properties, but the too fast setting time restricted its application and promotion. Changing the composition of alkaline …

Alkali activated aerogels

Alkali activated materials, especially Geopolymers, are mechanically the antithesis of the clay aerogel. These materials exhibit much higher densities and mechanical properties similar to portland cement. Alkali activated materials were used as far back as ancient Egypt for casting small statues and vases [4].

Hydration Products, Morphology and Microstructure of ...

Activated slag cement (ASC) is an attractive alternative to Portland cement. Activated slag cement is a mixture of pozzolana and activator. The activation of slag is normally achieved by mixing it with either compounds of alkalis or alkaline earth materials. The calcination is not required in the manufacturing process, thus burning of fossil ...

Autogenous Deformation of Alkali-Activated Blast Furnace ...

Portland cement. Activated slag cement is a mixture of poz-zolana and activator. The activation of slag is normally achieved by mixing it with either compounds of alkalis or alkaline earth materials. The calcination is not required in the manufacturing process, thus burning of …

Alkali-activated slag concrete with paper industry waste

Rapid setting time of alkali-activated slag cement mixes and a quick loss of slump if the mix is not in motion is a known issue (Wang et al., 1994). The use of Ca(OH) 2 was suggested to lengthen the setting time of alkali-activated slag cement mixes (Douglas et al., 1991); this was observed for KOH mixes with PSA. The benefits in terms of ...

Life-Cycle Assessment of Alkali-Activated Materials ...

Accordingly, alkali-activated materials (AAM) composed primarily of industrial byproducts have emerged as more desirable alternatives to ordinary Portland cement (OPC)-based concrete. Hence, this study investigates the cradle-to-gate life-cycle assessment (LCA) of ternary blended alkali-activated mortars made with industrial byproducts.

Vol.8, , pp.61–68, March 2014 DOI 10.1007/s40069 …

Portland cement. Activated slag cement is a mixture of poz-zolana and activator. The activation of slag is normally achieved by mixing it with either compounds of alkalis or alkaline earth materials. The calcination is not required in the manufacturing process, thus burning of …

Mitigation of autogenous shrinkage in alkali activated ...

Abstract Alkali activated slag shows considerable promise as an environmentally friendly alternative to binders produced from ordinary portland cement. The shrinkage behavior of alkali activated slags, however, is not well understood, and is a hurdle to widespread adoption. The use of pre-wetted lightweight aggre-

Lightweight Cellular Concrete - LightBUILD

LightBUILD™ Cellular Lightweight Concrete (CLC, or ed concrete) is a mixture of cement or cement and aggregates with a multitude of micro/macroscopic discrete air cells uniformly distributed throughout the mixture. The manufacturing process in general consists of two stages: the production and the mixing a pre-manufactured ...

Alkali-activated slag concrete with paper industry waste

Alkali-activated slag concrete with paper industry waste Maria Mavroulidou1 and Shamil Shah1,2 Abstract Pulp and paper manufacturing and recycling industries are a resource-intensive sector, generating 25–40% of the annual municipal solid waste worldwide.

Types of Cement in Pakistan: Uses, Composition & More ...

Slag-Lime Cement. Slag-lime cement is yet another interesting type of cement in Pakistan. It is produced from a mixture of ground granulated blast furnace slag and activated by adding alkaline, such as lime. This particular type of cement is almost similar to pozzolan-lime cement. Calcium Aluminate Cement

Mitigation of autogenous shrinkage in alkali activated ...

Alkali activated slag shows considerable promise as an environmentally friendly alternative to binders produced from ordinary portland cement. The shrinkage behavior of alkali activated slags, however, is not well understood, and is a hurdle to widespread adoption. The use of pre-wetted lightweight aggregate-based internal curing to mitigate shrinkage in slags …

Solidia Technologies - Cement industry news from Global …

Solidia Cement is intended to be a sustainable replacement for Ordinary Portland Cement (OPC). It uses the same manufacturing process, equipment and raw materials used by the cement industry while consuming less energy and generating less greenhouse gases.

(PDF) AMR.897.280 - ResearchGate

"expanded perlite- alkali activated slag cement" showed the increased concentration of Na and K in a layer up to 50 µ m from the apparent line of t he contact towards the cement stone (Fig.1).