slag cement activation ptt

Chemical activation of slag-blended Portland cement

2018.7.1 Chemical activation as one of the most popular methods of activation has been considered for improving hydraulic properties of slags. This work presents chemical activation of blast-furnace slag-blended Portland cement.

Chemical activation of slag-blended Portland cement

2018.7.1 This work presents chemical activation of blast-furnace slag-blended Portland cement. For this purpose, a number of different chemical activators and two

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 摘要碱激发矿渣混凝土（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,

Enhancement of hydraulic activity of slag-blended Portland cement ...

2018.9.4 Abstract. This work investigates the effects of both soluble and insoluble chemical activators and quality improvers on hydraulic activity of ground granulated blast

Reactivity Alteration of Granulated Blast Furnace Slag by

2019.1.12 The hydration behaviour of vibratory milled slag and cement clinker mixtures is studied in an eight channel isothermal conduction calorimeter (ICC) (TAM

Fresh and Hardened Properties of Portland Cement-Slag

2020.12.9 Cement-Slag Concrete Activated Using the By-Product of the Liquid Crystal Display Manufacturing Process Sung Choi 1 and Sukhoon Pyo 2,* ... as a

(PDF) Alkali-Activation of Slag Cements: Activation

2011.7.5 The present paper addresses the alkali activation of Portland cements containing blast furnace slag (20 and 30% of the cement by weight) with a view to the possible use of these materials in...

Hydration and Properties of Slag Cement Activated by Alkali

2017.4.13 In this paper, the results of a study on the influence of sodium hydroxide, calcium hydroxide, aluminum hydroxide, sodium sulfate, calcium sulfate, and calcium

An exploratory study on sodium sulphate-activated slag

2017.8.25 Abstract In this work, the effect of Portland cement (PC) on1 %Na 2Oequivalentofsodiumsulphate-activatedground granulated blast-furnace slag (hereafter

A contribution from ACI Committee 236 Alkali-Activated

2023.11.5 Alkali-activated slag cement concrete (AASCC) is a promising sustainable alternative to portland cement concrete (PCC). AASCC relies on strong alkaline solutions

Preparation of composite micro-slag based on the

2022.3.7 Slag concrete has the advantages of low hydration heat evolution and a low carbon footprint, but the impact of drying shrinkage will increase the risk of cracking concrete components. ... Preparation of Ni–Co ore mining mullock powder based cementing materials by mechano-chemical activation: Performance and Mechanism. 2023, Research Square.

Crystals Free Full-Text Experimental Study on the Effect of

2021.6.10 In this study, activator, metakaolin, and silica fume were used as a compound activator to improve the activity of steel slag powder. The influence of activator, steel slag powder, metakaolin, and silica fume on the resulting strength of steel slag cement mortar was investigated by orthogonal experiments. For four weight fractions of steel

Autogenous Deformation of Alkali-Activated Blast

2018.10.30 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

Ladle Steel Slag in Activated Systems for Construction Use

2020.6.18 The construction industry needs to reduce greenhouse gases, in which cement production is currently responsible for generating between 4% and 6% of the total CO2 released into the atmosphere. Similarly, many industries produce large amounts of solid waste, which often have low value-added applications or are directly taken to

Hydration Products, Morphology and Microstructure of Activated Slag Cement

2014.3.7 This paper reports the physical properties and hydration products of slag cement that was prepared by activating ground granulated blast furnace slag with commercial lime and plaster of Paris (POP) as activators. The consistency, setting times and soundness of various mixes of slag-lime-POP is reported. The hydration products and

The Effect of Activators on the Mechanical Properties and ...

2020.1.20 The raw materials for the test include nickel slag, cement, a solid alkali activator, standard sand, water, citric acid, and water reducer. The particle size of the undisturbed water-quenching nickel slag used in the test was about 3-4 mm. The Blaine surface area and specific gravity are 425 m 2 /kg and 3.02, respectively.

Activation of blast furnace slag by a new method

2009.8.1 Blast furnace slag is usually activated by mixing with Portland cement clinker. At very high pH values (> 13.0) corrosion of the slag particles is enhanced and the reaction of blast furnace slag is accelerated. Alternatively, the use of low pH values (11.8–12.4) was investigated in this study. It has been shown that activation is possible

Phosphorus slag in supplementary cementitious and alkali

2022.10.17 Effect of thermal activation on the properties of PSC and chemically activated phosphorus slag cement (CAPHSC) Temperature is one of the factors that promote the hydration reaction of cement and concrete. If the temperature is too high, the rate of hydration is improved, resulting in higher early age strength but loss of strength at

Using hazardous barium slag as a novel admixture for alkali activated ...

2022.1.1 Barium slag (BS) is a hazardous industrial solid waste formed during the production of barium carbonate from barite. BS contains a lot of soluble barium ions (Ba 2+) with a leaching concentration 2–20 times higher than the regulation limit of hazardous waste in China (GB 5085.3–2007) [1]. In addition, the leaching rate of Ba 2+ in BS can ...

Slag Cement - an overview ScienceDirect Topics

Portland slag cement, which is most commonly used in the region, was used for the study complying with IS 455 [21].Its specific gravity was 2.87 having initial and final setting times of 70 minutes and 480 minutes, respectively.For fine aggregate, natural sand was used, having a maximum size of 4.75 mm.Its specific gravity was 2.72, conforming to Zone-III, and

Hydration and Properties of Slag Cement Activated by Alkali

2017.9.1 Alkali-activated slag cement and concrete: a review of properties and problems. Shao-dong Wang X. Pu K. Scrivener P. L. Pratt. Materials Science. 1995. This paper summarizes the advantageous and disadvantageous properties of alkali-activated slag cement and concrete by reviewing previously published work in English, Russian

An exploratory study on sodium sulfate activated slag

2014.11.18 In this work, the effect of different contents of Portland cement (PC) on the heat of hydration, pH value, compressive strength and drying shrinkage of 1 % Na2O equivalent of Na2SO4 activated ground granulated blast-furnace slag (hereafter referred as slag) has been investigated and compared to slag activated with other common

Hydration and Properties of Slag Cement Activated by Alkali

2017.4.13 The sulfate ions from sulfates would react with Ca 2 + from slag cement and form the reaction product ettringite. However, the addition of sodium hydroxide seems ineffective in activating the slag cement. ... W., and Roy, D. M. (1990). “Early activation and properties of slag cement.” Cem. Concr. Res., 20(6), 961–974. Crossref. Google ...

Utilization of flue gas desulfurization gypsum as an activation

2018.12.20 Section snippets Materials. P.O 42.5 (Chinese standard GB175-2007) ordinary Portland cement was employed as the test material. Slag from Nanjing Meishan Steel Company was used as mineral admixture, with a specific surface area of 408 m 2 /kg and a density of 2900 kg/m 3.The chemical compositions of the cement and slag are

Materials Free Full-Text Research Progress on Controlled

2022.1.19 The final hydration product after slag activation is similar to the cement C-S-H, but the Ca/Si ratio of the slag hydration product is lower. Therefore, the activation rate and strength of slag significantly differ compared with those of ordinary Portland cement . 2.1.4. Properties and Mechanism of Slag CLSM

Pore solution in alkali-activated slag cement pastes. Relation

2004.1.1 In this work, the relationship between the composition of pore solution in alkali-activated slag cement (AAS) pastes activated with different alkaline activator, and the composition and structure of the main reaction products, has been studied.Pore solution was extracted from hardened AAS pastes. The analysis of the liquids was performed through

Calorimetric Studies of Alkali-Activated Blast-Furnace Slag

2021.10.7 In the hydration process of inorganic cements, the analysis of calorimetric measurements is one of the possible ways to better understand hydration processes and to keep these processes under control. This study contains data from the study of thermokinetic processes in alkali-activated blast-furnace slag cements compared to

Activated slag as partial replacement of cement mortars:

2019.8.20 This paper, from the perspective of the precast industry, reports on a study into the activation of mortar mixes with ground granulated blast furnace slag (GGBS) (0, 30, 50, 70%) and cement (CEM I 42.5R) using temperature (ambient (20 °C) and moderate (35 °C)) and accelerating admixtures (a novel chloride free activator and a commercial

Investigating the effect of alkali-activated slag on the

2021.11.29 Ordinary Portland cement and lime are two traditional admixtures that account for 6% of all CO2 emissions, thus making them the leading causes of global warming. Alkali-activated slag types of cement are new environmentally friendly cement types that could improve soil quality. This study presented a mathematical approach to

Sodium carbonate activated slag as cement replacement in

2017.6.1 Autoclaved aerated concrete (AAC), a lightweight porous material, has been widely used in the building field because of its energy savings. A solid waste called carbide slag with a high Ca(OH) 2 content is a potential substitution for CaO to prepare AAC. In this study, carbide slag was used to replace quicklime to prepare carbide slag-based