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Portland cement - Wikipedia
Portland cement, blast furnace slag or fly ash and pozzolana * Constituents that are permitted in portland-composite cements are artificial pozzolans (blast furnace slag (in fact a latent hydraulic binder), silica fume, and fly ashes), or natural pozzolans (siliceous or siliceous aluminous materials such as volcanic ash glasses, calcined clays ...
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Strength and Durability of Concretes with Slag-Fly Ash
Composite cements, based on ternary blends of portland cement, fly ash, and ground granulated blast-furnace slag, may be produced, in agreement with the European Standard EN 197/1(1), with a slag + fly ash content up to 60% (CEM V/A) or 80% by mass (CEM V/B). However, in Europe composite cements are not widely used in practice.
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Curriculum Vitae: Professor Ir. Dr. Ubagaram Johnson Alengaram
The development of compressive strength of ground granulated blast furnace slag-palm oil fuel ash-fly ash based geopolymer mortar. Materials & Design, 56, 833-841. doi: 10.1016/j.matdes.2013.11.080 (WoS)
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GGBS Concrete - CSMA - The Cementitious Slag Makers Association
Typically the 7-day strength of a ggbs concrete will be 55-65% of the 28-day strength compared to 70-80% for a similar CEM I Portland cement concrete. The reduction in early-strength will be more noticeable at high GGBS levels and low temperatures. Similarly low cement content concrete, kerb backing etc, the reduction will be magnified.
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Full article: Immobilization of antimony waste slag by applying ...
The As leaching levels from those samples ranged between 0.001 and 0.036 mg/L. Four of the samples yielded higher As leaching than the initial leaching from the AWS. These samples were those containing fly ash + Portland cement + blast furnace slag, fly ash + clay + gypsum, Portland cement + clay + gypsum, and fly ash + clay + blast furnace slag.
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SP-079: Fly Ash, Silica Fume, Slag and Other Mineral By ... - CivilNode
Pozzolanic and Cementitious Byproducts as Mineral Admixtures for Concrete - A Critical Review Twenty-Five Years' Experience Using Fly Ash in Concrete Durability of Fly Ash Concrete Shrinkage and Creep of Mass Concrete Containing Fly Ash Effect of Fly Ash on the Air-Void Stability of Concrete The Use of Fly Ash in Concrete-Australian Experience Studies into the use of fly ash in concrete for ...
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Composite Cement Material | PDF | Fly Ash | Cement - Scribd
Composite/Blended cement is an old component of concrete mixtures. Pozzolanic cement was standardised in Italy in 1929. Blast-furnace slag cements were produced in Germany, France, Luxembourg and Belgium for more than a century. Cements containing fly ash appeared in France in 1950.
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Contributions of fly ash and ground granulated blast-furnace slag to ...
Hydration heat evolutions and non-evaporable water contents of binders and reaction degrees of fly ash and ground granulated blast-furnace slag (GGBS) were tested to investigate the contributions of fly ash and GGBS to the early hydration heat of composite binders at 25°C and 50°C. Results show that fly ash makes a very small contribution to the early hydration heat of composite binder at 25 ...
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Prediction of Mechanical Properties of Fly-Ash/Slag-Based Geopolymer ...
May 12, 2022Thus, the fly-ash-to-NaOH ratio, Na 2 SiO 3-to-NaOH ratio, workability, fly-ash-to-sand ratio, molarity, and alkaline ratio affect the strength of concrete [25,26,27]. Ukritnukun et al. [ 28 ] observed that the blast-furnace slag concentration, curing temperature, and silicate modulus all had a beneficial effect.
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2 capture capacity for the construction industry Alkali-activated blast ...
Alkali-activated blast-furnace slag cements with high compressive strength and CO2 capture capacity for the construction industry Authors: Tania-Ariadna García-Mejíaa, Efraín Ovando-Shelleya, Rosa-María Ramírez-Zamorab* Affiliations: a Instituto de Ingeniería, Coordinación de Geotecnia, Universidad Nacional Autónoma de México. UNAM, México City, México.
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Article Granulated Blast-Furnace Slag and Coal Fly Ash Ternary Portland ...
composite cements, CEM V, which contains 40-64% of clinker, 18-30% of blast-furnace slag (S) and 18-30% of coal fly ash (V) and/or natural pozzolan (P) and/or calcined pozzolan (Q) in the case of CEM V/A. For the composite cement CEM V/B, these ranges are 20-38%, 31-50% and 31-50%, respectively. This standard is currently under ...
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blast furnace slag: Topics by Science.gov - OSTI.GOV
Studies on the corrosion resistance of reinforced steel in concrete with ground granulated blast-furnace slag--An overview.. PubMed. Song, Ha-Won; Saraswathy, Velu. 2006-11-16. The partial replacement of clinker, the main constituent of ordinary Portland cement by pozzolanic or latent hydraulic industrial by-products such as ground granulated blast furnace slag (GGBFS), effectively lowers the ...
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CiteSeerX — Citation Query Use of blast furnace slag cement for the ...
In the present study, 48 concrete cylinders, 100 mm diameter and 100 mm high, were made with Portland cement, and various combinations of slag, fly ash and silica fume. Each has a reinforcing steel bar embedded in it. 24 cylinders are half immersed in sodium sulfate (20,000 ppm SO42-) and also subjected to hydrogen sulfide gas (1,000 ppm H2S).
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Survey on Fly Ash Based Geopolymer Concrete - academia.edu
Survey on Fly Ash Based Geopolymer Concrete. Geetanjali Sawant. 2020, Journal of emerging technologies and innovative research. Continue Reading. Download Free PDF.
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Study on fly ash and GGBS based oven cured geopolymer concrete
In recent years, the cement production has been growing very rapidly. It is the third-largest carbon emission source after petroleum products and land-use change. In this investigation, the concrete is substituted by Fly Ash and Ground Granulated Blast Furnace Slag (GGBS) which has nearly a similar molecule size as concrete.
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Blast furnace slag or fly ash filled rigid polyurethane composite foams ...
Ground granulated blast furnace slag (BFS) and fly ash (FA) are iron-making industry and power plant byproducts, respectively. Although their use in concrete is quite common, investigation of the effects of these inorganic compounds on polymer properties is quite new, and their use as fillers in polymer composites has not yet been really explored.
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Effect of Alkali Concentration on Mechanical Properties, Microstructure ...
A study has been made on Fly-ash- blast furnace slag blended geopolymer composite. Formation of an alumino silicate hydrate gel in presence of fly ash requires an activator solution of higher pH but formation of calcium silicate hydrate gel in presence of blast furnace slag requires an environment of lower pH.
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The Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated ...
Blast furnace slag and high-temperature fly ash were used as raw materials. Their chemical composition is shown in Table 1. The mixture of NaOH and Na-silicate (weight ratio SiO 2:Na 2 O—3.1; wt % SiO 2 —27.3) was used as the alkaline activator. Heavy metals were used in the form of Ba(NO 3) 2 p. a., Pb(NO 3) 2 p. a., and CuCl 2 ∙2H 2 O p ...
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Blended cements: Binary and ternary cements were obtained by replacement by weight of CPN by granulated blast furnace slag and silica fume. A central composite experimental design was adopted to evaluate the blended cements as a system with interrelated variables and the replacement levels are derived from this selection.In this design, the two experimental variables were the percentages ...
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External sulfate attack on alkali-activated fly ash-blast furnace slag ...
properties of alkali-activated binder based on fly ash and blast furnace slag (FA-BFS) composite. The influ-ence of Na 2SO 4 solution was investigated during the period of 180 days and estimated by comparison with the reference samples simultaneously cured in a humid chamber and with the benchmark material CEM II.
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Compressive Strength of Sandy Soils Stabilized with Alkali-Activated ...
This paper considered volcanic ash (VA) and ground granulated blast furnace slag (GGBFS) in different percentages (0%, 3%, 7%, and 10%) as a replacement for the conventionally used portland cement to stabilize sandy soils.
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(PDF) Optimizing blended binders with slag or fly ash for improved ...
Slag (ground gran ulated blast furnace slag, G G BS) and fly ash (low calc ium, type V according to cement standard EN 197 -1 [3]) are recognized f or being able to increas e 8
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Blast furnace slag or fly ash filled rigid polyurethane composite foams ...
Ground granulated blast furnace slag (BFS) and fly ash (FA) are iron‐making industry and power plant byproducts, respectively. Although their use in concrete is quite common, investigation of the effects of these inorganic compounds on polymer properties is quite new, and their use as fillers in polymer composites has not yet been really explored.
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blast furnace slag cement - Traduction en français - exemples anglais ...
a slag cement includes ground granulated blast furnace slag and ground limestone combined in a predetermined weight ratio. un ciment de laitier comprenant du laitier granulaire de haut fourneau et de la pierre à chaux broyée, combinés selon un rapport pondéral prédéterminé. the invention relates to a slag cement having an improved early ...
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Influence of ground granulated blast furnace slag on the early ...
Alkali-activated materials are low-environmental-impact binders that can be obtained from the alkaline activation of industrial wastes. In this study, converter steel slag as the major raw material and ground granulated blast furnace slag (GBFS) as the modified material were activated by water glass with a modulus of 1.5 and a Na2O dosage of 4%. The hydration process, microstructure and ...
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Experimental Investigation On Self-Healing Performance of ... - Scribd
fly ash and ground granulated blast furnace slag can heal and seal the micro cracks that caused by. low frost damage concrete structure. 3 1.2 World trend of self-healing ability In 2005, RILEM Technical Committee 221 (Chairman Prof. E Schlangen) was established. regarding self-healing phenomena in cement-based materials.
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Fly Ash/Blast Furnace Slag-Based Geopolymer as a Potential Binder for ...
Materials used in this research are blast furnace slag (BFS) and fly ash (FA), obtained from Jinfeng Materials Co., Ltd in Henan, China, with a specific gravity of 2.84 and 2.37, respectively. The chemical compositions of BFS and FA are presented in Table 1.
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slag processing services india
slag mill slag grinding machine slag processing plant. Slag is mainly used for the production of cement either as a cement mixture can also be made non clinker cement After fine grinding blast furnace slag can be used as the main raw material for the production of slag powder It can replace silicon bath soil insulation packing and save cost
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The use of ternary cements to reduce the environmental impact of concrete
This paper presents some effects of newly developed ternary cements on concrete. The use of composite cements is a compelling solution to reduce the environmental impact of concrete but it is necessary to always assess their suitability in concrete. ... replacing clinker with by-products such as fly ash and blast-furnace slag is technically ...
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The effects of ZrO2 nanoparticles on properties of concrete using ...
The effects of ZrO2 nanoparticles on properties of concrete using ground granulated blast furnace slag as binder. Webinars; ... My Account; EN English . The effects of ZrO2 nanoparticles on properties of concrete using ground granulated blast furnace slag as binder Published 2012 ... Improvements of nano-SiO2 on sludge/fly ash mortar ...
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A Review on Potential of Graphene Reinforced Geopolymer Composites ...
1 day agoGeopolymers belong to a new class of aluminosilicate composites which serves to be an alternative to cement-based composites, was conceptualized by Joseph Davidovits, and has drawn increasing worldwide attention in a short span due to low cost, high compressive strength, outstanding thermal properties, environmentally friendly nature [1, 2].The constituents for geopolymer composites include a ...
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Properties of modified engineered geopolymer composites incorporating ...
Progress in molten blast furnace slag treatment using dry centrifugal granulation technology Experimental Study on The Properties of Geopolymer Concrete Using Fly Ash and Ground Granulated Blast Furnace Slag (Part 9: Carbonation Resistance)
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Properties of mortars made by uncalcined FGD gypsum-fly ash-ground ...
A series of novel mortars were developed from composite binder of uncalcined FGD gypsum, fly ash (FA) and ground granulated blast furnace slag (GGBFS) for the good utilization of flue gas desulphurization (FGD) gypsum. At a fixed ratio (20%) of GGBFS to the composite binder, keeping consistency of t .
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Standard formula (SF) datasets - Europa
blast-furnace slag, silica fume, fly ash, pozzolan, burnt shale, limestone] 483edb07-d156-469d-90e6-d4dd63a2fada Cement Standard Formula - 17 [Composite cement Portland cements with four main constituents: clinker, slag, siliceous fly ash and natural or natural calcined pozzolan] 0671d4eb-52d1-4028-addd-0f66abf50504
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Cement with silica fume and granulated blast-furnace slag: strength ...
This paper analyses the influence of portland cement replacement by silica fume (up to 10%) and/or granulated blast furnace slag (up to 70%) on the hydration cement (XRD, heat of hydration, non evaporable water content and calcium hydroxide content) curing under sealed conditions and their effect on the mechanical strength. The obtained results indicate that binary cements containing silica ...
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Effects of Granulated Blast Furnace Slag and Fly Ash on Concrete ...
Feb 28, 2021The GBFS is a byproduct of iron and steel making industry, obtained by slaking of molten iron slag from a blast furnace in water or steam to produce a glassy granular product that is then dried and...
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A composite of binder for yellowish soil concrete as eco-friendly non ...
The present invention relates to an eco-friendly cementless red clay concrete binding material composition in which a binding material containing blast furnace slag, fluidized-bed boiler fly ash, and sodium silicofluoride is used so that a red clay material lacking hardening characteristics can be provided with hardening characteristics.
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blast furnace tuyeres: Topics by Science.gov
The investigation was carried out to explore the advantages of the Bismuth-Ground granulated blast furnace slag (Bi-GGBFS) concrete in different radiation shielding applications. Ternary Blends of High Aluminate Cement, Fly ash and Blast-furnace slag for Sewerage Lining Mortar. NASA Astrophysics Data System (ADS) Chao, L. C.; Kuo, C. P. 2018-01-01
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The Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated ...
Blast furnace slag and high-temperature fly ash were used as raw materials. Their chemical composition is shown in Table 1. The mixture of NaOH and Na-silicate (weight ratio SiO 2 :Na 2 O—3.1; wt % SiO 2 —27.3) was used as the alkaline activator. Heavy metals were used in the form of Ba (NO 3) 2 p. a., Pb (NO 3) 2 p. a., and CuCl 2 ∙2H 2 O p. a.
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Effect of Curing Temperature and Silicate Concentration on Fly-Ash ...
The development of the pore structure of geopolymers synthesized from class F fly ash was studied using electron microscopy and porosimetry. Fly-ash-based geopolymer can be classified as a mesoporous aluminosilicate material, with a Si/Al composition varying from 1.51 to 2.24. The Si/Al composition and pore structure of fly-ash-based geopolymer vary depending on the curing temperature and the ...
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