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Ground granulated blast-furnace slag - Wikipedia

Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.

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Compressive Strength and Microstructure Properties of ...

This study investigates the effect of desulfurization slag (DS) and gypsum (G) on the compressive strength and microstructure properties of blast furnace slag-(BFS-) based alkali-activated systems. DS is produced in a Kambara reactor process of molten iron produced in a steel production process. DS contains CaO, SiO2, Fe2O3, and SO3 and is composed of Ca(OH)2 and 2CaO·SiO2 as main ...

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equipment of the slag alkali cement - francalanzapasta.it

Slag Cement Concrete Durability. SCIC #23, Slag Cement and Life Cycle Prediction Models, examines how slag cement can positively affect some of the properties that increase the useful life of a concrete structure and decrease life cycle cost, including low permeability, increased corrosion resistance, high strength, improved resistance to alkali-silica reactivity and sulfate ...

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NON-PORTLAND CEMENT ACTIVATION OF BLAST …

NON-PORTLAND CEMENT ACTIVATION OF BLAST FURNACE SLAG The purpose of this project was to produce a “greener” cement from granulated ground blast furnace slag (GGBS) using non-Portland cement activation. By eventually developing “greener” cement, the ultimate goal of this research project would be to reduce the amount of Portland cement

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Mechanical Properties of Different Alkali Activated Slag ...

Mechanical properties of different alkali activated slag content 167 yield in different geopolymer strength and properties associated with it. There are few types of geopolymer cement, namely slag based, rock based and fly ash based. The slag based geopolymer cement is …

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Slag | Cement Science

Dec 15, 2014· Since alkali activated slag is indeed a kind of geopolymer cement, it looks logical to consider Geopolymer cement as alkali activated cement. Is it correct? Recently, I read the State of the Art report on alkali activated cement (Alkali Activated Materials State-of-the-Art Report, RILEM TC 224-AAM), finding the description: Low-calcium alkali ...

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Slag Cement Concrete Durability

SCIC #23, Slag Cement and Life Cycle Prediction Models, examines how slag cement can positively affect some of the properties that increase the useful life of a concrete structure and decrease life cycle cost, including low permeability, increased corrosion resistance, high strength, improved resistance to alkali-silica reactivity and sulfate ...

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Carbonation Characteristics of Alkali-Activated Blast ...

Alkali-activated ground granulated blast-slag (AAS) is the most obvious alternative material for ordinary Portland cement (OPC). However, to use it as a structural material requires the assessment and verification of its durability. The most important factor for a durability evaluation is the degree of carbonation resistance, and AAS is known to show lower performance than OPC.

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The Effect of Alkalis on The Properties of Portland Cement

Portland cement (type V), it is found that there is a little difference in the value of the physical properties. Keywords: Alkali, Percent age, Portland cement, Tests and Physical Properties 1. INTRODUCTION. Portland cement is essentially a calcium silicate cement, which is produced by firing to

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15+ Different Types of Cement - Their Definition ...

These types of cement are manufactured by adding additional quantities of calcium sulfate and blast furnace slag in the Portland cement. It is especially useful for mass concrete work especially in sulfate-rich environment and marine conditions. Besides, it is comparatively economical than other types of cement. 13. Low Alkali Cement:

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Characterization of environmentally-friendly alkali ...

Characterization of Environmentally-Friendly Alkali Activated Slag Cements and Ancient Building Materials . A Thesis . Submitted to the Faculty . of . Drexel University . by . Richard Sakulich . in partial fulfillment of the . requirements for the degree . of . Doctor of Philosophy . September 2009

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Effect Of Fly Ash And Polypropylene Fiber On Early ...

The effects of substituting 5-20% fly ash for slag and adding 0.10~0.30% polypropylene fiber on the physical and mechanica1 properties, shrinkage and cracking behaviors, water permeability and porosity of alkali-activated ground granulated blast furnace slag cement paste and mortar are studied.

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Materials | Free Full-Text | A Review of Durability and ...

Alkali-activated slag (AAS) is a promising alternative to ordinary Portland cement (OPC) as sole binder for reinforced concrete structures. OPC is reportedly responsible for over 5% of the global CO2 emission. In addition, slag is an industrial by-product that must be land-filled if not re-used. Therefore, it has been studied by many investigators as environmentally friendly replacement of OPC.

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Slag Grinding Plant - cement plant,ball mill,vertical mill ...

Adding GGBFS during cement production can increase the strength 28D of cement by 15% - 20%, to admix 42.5 grade cement, and during concrete production, slag powder can replace 10 ~ 50% of the cement, to mix C20 ~ C60 concrete, which has become an important measure to reduce the cost of cement in the international cement industry. Piles of slag ...

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Effect of Red Mud Content on Strength and Efflorescence in ...

Efflorescence which severely occurs in alkali-activated slag cement can cause reduction of strength and durability due to calcium leaching. In the work, efflorescence characteristics in pavement containing red mud which can be affected by strong alkaline were investigated through various tests such as compressive strength, porosity, absorption ...

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Alkali Activated Materials are NOT Geopolymers - YouTube

Jul 16, 2014· In a second part, on hand of the industrialization of Slag/fly ash-based geopolymer cement/concrete implemented by the company Wagners, Australia, he …

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Alkali Content of Concrete Mix Water and Aggregates

Alkali Content of Concrete Mix Water and Aggregates Introduction Alkali silica reaction (ASR) is a chemical reaction between some types of aggregate and the highly alkaline pore water present in all Portland cement concretes. When the concrete contains sufficient moisture, alkalis and reactive aggregate the reaction produces

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Alkali-Activated Blast furnace Slag as a Green ...

Alkali-activated blast furnace slag may be considered as an alternate binder to ordinary Portland cement. Alkali-activated binders are receiving much attention because of their high strength, durability and low environmental impact [5]. The greenhouse gas savings achievable through the use

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Geopolymer cement - Wikipedia

The first geopolymer cement developed in the 1980s was of the type (K,Na,Ca)-poly(sialate) (or slag-based geopolymer cement) and resulted from the research developments carried out by Joseph Davidovits and J.L. Sawyer at Lone Star Industries, USA and yielded the invention of Pyrament® cement. The American patent application was filed in 1984 ...

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ALKALI-ACTIVATION KINETICS OF PHOSPHORUS SLAG …

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 amount of products and non-reacted materials in specified time intervals is difficult, can be addressed. Owing to these constraints, researchers consider the

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Cement - Slag cements | Britannica.com

Cement - Slag cements: The granulated slag made by the rapid chilling of suitable molten slags from blast furnaces forms the basis of another group of constructional cements. A mixture of portland cement and granulated slag, containing up to 65 percent slag, is known in the English-speaking countries as portland blast-furnace (slag) cement. The German Eisenportlandzement and Hochofenzement ...

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Characteristics and applications of iron and steel slag ...

There is no risk of alkali-aggregate reaction, and this slag contains no clay or organic impurities. As a result, it is also used as a concrete aggregate in the same way as natural aggregate. Granulated blast furnace slag Just like air-cooled blast furnace slag, this slag has a hydraulic property and there is no risk of alkali-aggregate reaction.

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Activation of slag in blended cement | Cement Science

2 thoughts on “ Activation of slag in blended cement ” Alon Raz July 31, 2013 at 9:19 AM. Very usefule, well written and summarized article. Looking for similar articles regarding Fly Ash activation methods or mixtures of Fly Ash and Slag in blended cement.

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Ground Granulated Blast Furnace Slag (GGBS) - Online ...

Jun 08, 2019· Ground granulated blast furnace slag (GGBS) What is GGBS and How it is Manufactured? Ground granulated blast furnace slag (GGBS) is a by-product from the blast-furnaces used to make iron. furnaces are fed with a controlled mixture of iron-ore, coke and limestone, and operated at a temperature of about 1,500°C.The granulated slag is further processed by drying and …

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Resistance of alkali-activated slag concrete to alkali ...

This paper presents an investigation into durability of alkali-activated slag (AAS) concrete exposed to alkali–aggregate reaction (AAR). In the concrete prism test method (ASTM C 1293), reactive ...

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Mitigating Alkali-Silica Reaction - Slag Cement

In this standard practice, the minimum level of slag is determined by consideration of aggregate reactivity, alkali availability, the exposure conditions, and the size and type of the concrete structure. Slag cement contains a small amount of alkalis.Typically, the amount of alkali is similar to that of low- to-moderate-alkali portland cement ...

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Alkali-Aggregate Reaction - cement.org

Alkali-silica reaction (ASR) is of more concern because aggregates containing reactive silica materials are more common. In ASR, aggregates containing certain forms of silica will react with alkali hydroxide in concrete to form a gel that swells as it adsorbs water from the surrounding cement …

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Geopolymer concrete - A commercial reality - Cement

Alkali-activated 'geopolymer' concrete has been commercialised in Australia under the trade name E-Crete (TM) and is now finding acceptance among the end-user community and from regulatory authorities. E-Crete is derived from fly ash and blast furnace slag with proprietary alkali activators and is available in both precast and pre-mix forms.

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ASTM C1567 - 13 Standard Test Method for Determining the ...

4.1 This test method provides a means for evaluating the ability of pozzolans and ground granulated blast-furnace slag to control deleterious internal expansion due to alkali-silica reaction when used with an aggregate intended for use in concrete.

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performance of manganese slag cement based concrete

a study on complex alkali-slag environmental concrete - Iowa State ... titanium-containing slag, manganese slag, basic cupola furnace slag, aqueous slag from power ... is also called as alkali activated cementitious material or cement. ..... “Experimental Study on Structural Performance of Alkali-slag (JK) Concrete.

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