portland blast furnace slag cements

À propos de LIL

Blast Furnace Slag Cement – Manufacture,
2018.8.20 Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by
Voir plus
Characteristics of Portland blast-furnace slag cement containing cement ...
2016.9.1 Portland blast-furnace slag cement (PSC) was obtained by mixing of 65% ordinary Portland cement (OPC) with 35% granulated blast-furnace slag (GBFS). Very
Voir plus
碱激发矿渣混凝土的水化特性及微观结构研究进展 - 工
2021.12.10 碱激发矿渣混凝土（alkali-activated slag concrete, AASC）是一种新型的绿色建材，与普通硅酸盐混凝土相比，制备AASC所产生的CO 2 仅为普通硅酸盐混凝土（ordinary Portland cement concrete,
Voir plus
Blast Furnace Slag Cement - an overview ScienceDirect Topics
Blast Furnace Slag Cement. Portland blast furnace slag cement (PBFSC) is obtained by mixing the granulated blast furnace slag and ordinary Portland cement clinker in suitable
Voir plus
Characterization of blast furnace slag-blended Portland
2020.8.1 The leaching behavior of Co 2+ from blast furnace slag-blended cement is investigated. Semi-dynamic leaching test results show that the performance of the
Voir plus
Granulated Blast-Furnace Slag and Coal Fly Ash Ternary Portland Cements ...
2020.7.17 Granulated blast-furnace slag (GBFS) and coal fly ash (CFA) are two well-known constituents in Portland cements. Ternary Portland cements (GBFS-CFA-K)
Voir plus
Properties of Portland Blast Furnace Slag Cements Affecting
2019.8.7 In Japan, Portland blast furnace slag cements that contain 30–60% of blast furnace slag (BFS) are classified in the slag cement class B in JIS R 5211. Even if slag
Voir plus
Portland Blast-Furnace Slag Cement: A Review Semantic
Materials Science, Engineering. 2009. The cementitious performance of a coarse granulated blast furnace slag, 2900 cm 2 /g, was investigated in concretes of 230, 280 and 330 kg
Voir plus
Performance of Ground Granulated Blast-Furnace Slag and
2021.6.11 Ternary Portland cements composed of granulated blast-furnace slag (GBFS), coal fly ash (CFA), and clinker (K) can afford some environmental advantages
Voir plus
Alkali-activated Portland blast furnace slag cement mortars ...
2018.8.10 The material based on 100% Portland Cement (CEM) had the highest susceptibility to alkali-silica attack, followed by the alkali-activated hybrid material (HB) and the blended cement with 80% blast furnace slag (CE), which showed expansion values of 0.14%, 0.09% and −0.02% at 14 days and 0.27%, 0.14% and −0.03% at 30 days of
Voir plus
Blast Furnace Slag Cement - an overview ScienceDirect Topics
Developments in Portland slag cements. Vipin Kant Singh, in The Science and Technology of Cement and Other Hydraulic Binders, 2023. 17.7.5 Chemical resistance of slag cement. The products of hydrations of Portland cement, PBFSC and super sulphated cements are very similar, so the difference in behaviour towards aggressive chemicals arises
Voir plus
Properties of self-compacting portland pozzolana and
2011.2.5 Moreover, the effect of different replacement levels (0–45%) of ground granulated blast furnace slag (GGBFS) with the PPC, PLC, and PC cements on fresh properties (such as slump flow diameter, T 500 slump flow time, V-funnel flow time, L-box height ratio, setting time, and viscosity) and hardened properties (such as compressive
Voir plus
Microscale and macroscale strength behaviors of blast furnace slag ...
2023.5.2 1. Introduction. One of the major byproducts of the steel industry is blast furnace slag (BFS). The massive accumulation of slag solid waste not only brings a heavy economic burden to steel companies, but may also adversely affects the local soil, groundwater and atmosphere, endangering the surrounding environment [1].As a result,
Voir plus
Cement - Slag, Strength, Durability Britannica
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
Voir plus
Experimental study on autogenous shrinkage behaviors of
2020.1.10 In this study, the differences in autogenous shrinkage behaviors among the Portland blast furnace slag (BFS) cements were investigated experimentally. Portland BFS cements that contain 40–45% BFS were collected from eight different plants in Japan and their autogenous shrinkage at early ages were measured with mortar specimens.
Voir plus
Properties of Portland Blast Furnace Slag Cements Affecting
2019.8.7 In Japan, Portland blast furnace slag cements that contain 30–60% of blast furnace slag (BFS) are classified in the slag cement class B in JIS R 5211. Even if slag cements are classified in a category, different autogenous shrinkage behaviors are observed among them. In this study, class B slag cements are collected from eight different ...
Voir plus
Materials Free Full-Text Chloride Diffusion in Concrete
2022.12.13 Ternary Portland cement usage with a high amount of cement constituents different from clinker can afford great climate change advantages by lowering the Portland cement clinker content in the final product. This will contribute to cutting greenhouse gas emissions to close to zero by 2050. Such ternary Portland cements can
Voir plus
Ettringite instability analysis in the hydration process of the ...
2021.8.5 The search for new materials to replace Portland cement (PC) has increased due to the high release of carbon dioxide (CO2) and the exploration of raw materials for its production. In this case, supersulfated cement (SSC) appears as an option. SSC consists of up to 90% blast furnace slag and small percentages of calcium sulfate
Voir plus
Performance of Ground Granulated Blast-Furnace Slag and
2021.6.11 Ternary cements prepared for this study were manufactured by blending of coal fly ash (V), ground granulated blast-furnace slag (S), and Portland cement (CEM I 42.5 R) in the percentages presented in Table 4 to form eight different ternary cements. The Portland cement was utilized as reference (100%).
Voir plus
Standard SpeciÞcation for Blended Hydraulic Cements 1
2023.6.12 3.2.2 slag, nÑ the term slag is used within this speciÞcation to denote either slag cement or granulated blast-furnace slag. 3.2.3 ternary blended cement, nÑ a blended hydraulic ce-ment consisting of portland cement with either a combination of two different pozzolans, slag and a pozzolan, a pozzolan and a limestone, or a slag and a
Voir plus
Portland cement-blast furnace slag mortars activated using waterglass ...
2014.9.15 Mortars of portland cement with 50% of blast furnace slag were alkali activated with 0–10%Na 2 O using waterglass and cured at 10–40 °C. The presence of the slag reduced the strength of 0%Na 2 O blends and the alkaline activation with 4%Na 2 O resulted in even lower values; 6%Na 2 O gave similar results as 0%Na 2 O and 10%Na 2
Voir plus
Phase transformations and mechanical strength of OPC/Slag
2007.5.25 Ground granulated blast furnace slag (GGBFS or “slag”) is a by product of the steel industry and is often used in combination with ordinary Portland cement (OPC) as a binder in concrete. When concrete is exposed to high temperatures, physical and chemical transformations lead to significant loss of mechanical strength. Past studies have
Voir plus
Frontiers Environmental and Mechanical Evaluation of Blended Cements ...
The four cements in Series D showed similar trends: 1) compressive strength at 3 days was higher than ternary blast furnace slag and limestone filler (Series B) or fly ash and limestone filler (Series C) cements, due to the insertion of calcined clay, which, in the presence of limestone filler, contributes to the rapid hydration reactions; and ...
Voir plus
Composite Cement: A Sustainable Binding Material for Real
2022.3.13 The extraction of lime stone for the manufacturing of cement is a highly energy consuming process that demands high embodied energy. Consumption of supplementary cementitious materials (SCMs) like fly ash (FA) and granulated blast furnace slag (GBFS) results in reduction in energy and carbon emission.
Voir plus
Enhancement of hydraulic activity of slag-blended Portland
2018.9.4 This work investigates the effects of both soluble and insoluble chemical activators and quality improvers on hydraulic activity of ground granulated blast-furnace slag-blended Portland cement. An optimum mix consisting of 48% Portland cement, 43% slag and 9% insoluble chemical activator was firstly opted based on 28-, 60- and 120-day
Voir plus
Sulfate resistance of plain and blended cement - ScienceDirect
2006.1.1 Abstract. This paper presents a laboratory study on the sulfate resistance of blended cement combination of reference Portland cement with high volume ground granulated blast-furnace slag (GGBS) and natural pozzolan (NP). The exposure solutions were tap water containing 5% magnesium sulfate solution and 5% sodium sulfate solution.
Voir plus
(PDF) Phase Evolution of Hybrid Alkali Sulfate-Activated
2023.12.1 In the present study, three hybrid cements based on ground granulated blast furnace slag, fly ash, Portland clinker and sodium sulfate, and an alkali-activated slag/fly ash blend were cured at 10 ...
Voir plus
Carbon dioxide uptake by pure Portland and blended
2021.9.1 The differences found in blended cements compared to pure Portland cements have made necessary a study on the role played by the blending constituents into the carbonation process. ... In the case of ground granulated blast-furnace slag cements the DoC resulted higher of 100% going from 79.27% for CEM III/A to 388.80% for CEM III/C.
Voir plus
Optimization of gypsum and slag contents in blended cement containing slag
2020.9.1 1. Introduction. Ground granulated blast furnace slag (GGBS) is a by-product of the blast furnaces in production of iron. GGBS can be used as a supplementary cementitious material to decrease the overall energy usage and carbon dioxide emissions in cement industry [1, 2].It is expected that more slag could replace the clinker to make the
Voir plus
Slag Cement - an overview ScienceDirect Topics
Portland blast furnace cement (simply called slag cement) refers to the hydraulic binding material ground by mixing Portland cement clinker, granular blast furnace slag, and appropriate amount of gypsum, code-named P • S. The mixed amount of granular blast furnace slag in cement is 20% ~ 70% by weight.
Voir plus
Hydration of quaternary Portland cement blends containing blast-furnace ...
2015.1.1 In this study the hydration of quaternary Portland cements containing blast-furnace slag, type V fly ash and limestone and the relationship between the types and contents of supplementary cementitious materials and the hydrate assemblage were investigated at ages of up to 182 days using X-ray diffraction and thermogravimetric
Voir plus
General hydration model for portland cement and blast furnace slag ...
1995.4.1 Based on isothermal and adiabatic hydration tests a new general hydration model is developed, valid both for portland cement and blast furnace slag cement. This hydration model enables the calculation of the heat production rate as a function of the actual temperature and the degree of hydration. Pergamon Cement and Concrete
Voir plus
The effect of temperature on the early hydration of Portland
2000.7.1 The effect of temperature, in the range 10–60°C, on the early hydration of two Portland cements from Mexico and three blended cements has been investigated by means of isothermal conduction calorimetry. The blended cements were based on the two Portland cements with partial replacement by ground granulated blast furnace slag,
Voir plus
Durability of Portland blast-furnace slag cement concrete
1999.1.1 With the exception of the plain Portland cement concrete which had the lowest, but reasonable, strength of 67.5 MPa at 7.5 years the slag cement concretes were very high strength and in the range of 82.5-105 MPa at the same age, clearly demonstrating the benefical longer term effect of slag. 2,2.2.5.
Voir plus
Portland slag and composites cement concretes: engineering and ...
2016.1.20 The effect of up to 30–50% of ground granulated blast-furnace slag (GGBS) and its' combination with the silica fume (SF) and fly ash (FA) -within the BS EN 197-1 permitted limits-on fresh, ... In order to promote wider use of Portland-slag and composite cements concrete, a range of BS EN 197-1 cement types with limited data on
Voir plus
Influence of limestone addition on sodium sulphate activated blast ...
2022.12.19 The sodium sulfate activated slag cements in this study - with or without limestone addition - developed a refined pore structure (i.e. a shift in the cumulative pore volume towards smaller pore entry diameters with narrow range of size distribution) compared to that typically identified in Portland and blended Portland cements [94], [95].
Voir plus
Sulfate resistance of plain and blended cement - ScienceDirect
2006.1.1 This paper presents a laboratory study on the sulfate resistance of blended cement combination of reference Portland cement with high volume ground granulated blast-furnace slag (GGBS) and natural pozzolan (NP). The exposure solutions were tap water containing 5% magnesium sulfate solution and 5% sodium sulfate solution.Two types of
Voir plus
Study of the hydration of Portland cement blended with blast-furnace ...
2010.5.11 The hydration of ordinary Portland cement (OPC) blended with blast-furnace slag (BFS) is a complex process since both materials have their own reactions which are, however, influenced by each other. Moreover, the effect of the slag on the hydration process is still not entirely known and little research concerning the separation
Voir plus
Calorimetric Studies of Alkali-Activated Blast-Furnace Slag Cements
2021.10.7 This study contains data from the study of thermokinetic processes in alkali-activated blast-furnace slag cements compared to ordinary Portland cement (OPC). The obtained results show that, in contrast to OPC, the heat release values cannot be considered as a characteristic of the activity of alkali-activated blast-furnace slag cements.
Voir plus