Investigation of mineral hydraulic binders based on the slag-cement system obtained with the use of vortex electromagnetic homogenization

2021 ◽  
Vol 1 (2) ◽  
pp. 45-50
Author(s):  
B. B. Khaidarov ◽  
D. S. Suvorov ◽  
D. V. Lysov ◽  
G. G. Luchnikova ◽  
M. E. Druzhinina ◽  
...  
Keyword(s):  
Slag Cement ◽  
Cement System

Из гранулированных доменных шлаков и портландцемента М500 с применением вихревой электромагнитной гомогенизации получены образцы минерального гидравлического вяжущего и искусственного камня на его основе. Исследованы физико-химические характеристики минеральных порошков: фазовый и химический состав, удельная поверхность, гранулометрический состав, механические свойства искусственного камня на основе вяжущих системы шлак‒цемент. Показано, что при введении в состав разрабатываемых материалов от 10 до 50 мас. % портландцемента предел прочности при сжатии образцов варьируется от 50 до 90 МПа, плотность ― от 2,1 до 2,5 г/см3. Данные материалы имеют низкую стоимость за счет использования доменного шлака в качестве сырья, а также благодаря применению энергоэффективной методики помола.

The Effect of Surfactant and Alkali on the Surface Tension of Simulated Solutions of Alkali Activated Slag Cement System

2011 ◽  
Vol 399-401 ◽  
pp. 1246-1250
Author(s):  
Xian Feng Liu ◽  
Jia Hui Peng ◽  
Chang Hui Yang ◽  
Yu Yan Shu ◽  
Da Chang Wu
Keyword(s):  
Surface Tension ◽  
Water Glass ◽  
High Viscosity ◽  
Heat Of Hydration ◽  
Slag Cement ◽  
Alkali Activated Slag ◽  
Cement System ◽  
Cement And Concrete ◽  
Activated Slag ◽  
Alkali Activated

Alkali activated slag cement and concrete are high strength, rapid hardening, low heat of hydration, good durability and so on. Whereas, too high viscosity and bad workability of the fresh mixture is the crux of the matter to embarrass application of alkali-activated slag cement and concrete. Development of special superplasticizer for alkali activated slag cement and concrete is a worth exploring way to solve the problem, and the study on the surface tension of simulated solutions of alkali activated slag cement system is one of the basic researches about the special superplasticizer. In this paper, the surface tension of surfactant-alkali-water was studied by Wilhelmy method. The results showed, first, water-glass had the best efficacity of several alkali activators, when the modulus of water-glass was 1.5 and dosage of water-glass by Na2O was 8%, the surface tension was reduced by 33 mN/m and reduced to 39.9mN/m; second, [CH3(CH2)9]2N(CH3)2Cl had the best efficacity of several surfactants, when the concentration of [CH3(CH2)9]2N(CH3)2Cl was 50g/L, the surface tension was reduced by 35.3 mN/m and reduced to 32.5 mN/m; finally, the effect of surfactant and alkali together on the surface tension of water was complex, surfactants had hardly effective in water glass.

Interaction between Slag and Clinker during Cement Hydration Process

2013 ◽  
Vol 857 ◽  
pp. 70-74
Author(s):  
Sheng Bo Zhou ◽  
Ai Qin Shen ◽  
Geng Fei Li
Keyword(s):  
Water Content ◽  
Calcium Hydroxide ◽  
Cement Hydration ◽  
Hydration Process ◽  
Slag Cement ◽  
Cement System ◽  
Two Stages

In order to investigate the activity of different original slags and the coupled relation between the slag and the clinker, the simplified slag cement system was designed in the experiment, in which clinker was replaced by lime.The reactional degree of slag in cement was determined through using chemical combined water content method, and the hydration processs were determined through using DSC-TGA. The results showed that for the different original slags, the destruction and rebuilding process of their microstructure were important to distinguish the activity of slags. And the process of slag hydration mainly experienced two stages, including microstructure destruction at early ages and microstucture rebuilding at later ages. And the variation of Calcium hydroxide content in cement indicated the interaction between the slag and clinker, and slag may improve the clinker hydration velocity.

Alkali-Activated Fly Ash-Slag Cement Based Nuclear Waste Forms

1992 ◽  
Vol 294 ◽  
Author(s):  
W. Jiang ◽  
X. Wu ◽  
D.M. Roy
Keyword(s):  
Fly Ash ◽  
Nuclear Waste ◽  
Freezing And Thawing ◽  
Slag Cement ◽  
Chemical Corrosion ◽  
Cement System ◽  
Main Components ◽  
High Ultimate Strength ◽  
Nuclear Waste Forms ◽  
Alkali Activated

ABSTRACTThis paper is based on the results of an in-progress research project on Alkali-Activated Cement System at MRL. The objective of this research is to establish the potential for large volume use of fly ash and slag as main components of the cement system. Alkali-activated Fly ash-slag Cement (AFC) was studied as a matrix for immobilization of nuclear waste. AFC is characterized by high early strength, high ultimate strength, low porosity, lower solubilities of the hydrates, and high resistance to chemical corrosion as well as to freezing and thawing. All these advanced properties are particularly favorable to the immobilization the nuclear wastes.

Influence of New Type Water Reducer Agent YC on Properties of Alkali-Activated Slag Cement Mortar

2011 ◽  
Vol 374-377 ◽  
pp. 1357-1360
Author(s):  
Ke Chen ◽  
Chang Hui Yang ◽  
Ze Dong Yu ◽  
Qun Pan ◽  
Shuang Zhao
Keyword(s):  
Cement Mortar ◽  
Reduction Rate ◽  
Slag Cement ◽  
Alkali Activated Slag ◽  
Cement System ◽  
Influence Of Water ◽  
New Type ◽  
Type Water ◽  
Activated Slag ◽  
Alkali Activated

Through test on influence of water reducer agent YC on properties of alkali activated slag cement mortar, it is shown that water reducer agent YC has favorable plasticizing effect on alkali activated slag cement. When the alkali component is NaOH, the water reducer agent YC gives a water reduction rate of 22.0% to the alkali activated slag cement mortar and the flow ability loss with time is small. The water reducer agent can be adsorbed on the surface of slag and enhance theξpotential of the alkali activated slag cement system.

Kinetics of Copper Ion Leaching from Cement-Solidified Body of Blast Furnace Slag Adsorbing Copper Ion

2021 ◽  
Vol 1035 ◽  
pp. 1036-1042
Author(s):  
Ya Li Wang ◽  
Zi Mo Li ◽  
Ning Yang ◽  
Qi Wei ◽  
Li Wei Hao
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Heavy Metal Ions ◽  
Copper Ions ◽  
Copper Ion ◽  
Slag Cement ◽  
Cement System ◽  
Kinetics Of ◽  
Furnace Slag ◽  
Solidified Body

Blast furnace slag has good adsorption performance and can be used to adsorb heavy metal ions in waste liquid. It’s worth studying whether the blast furnace slag absorbing heavy metal ions will pose a potential threat to the environment during the process when used in cement-based materials.This paper has studied the leaching amount of copper ions in the blast furnace slag-cement system was analyzed, and analyzed the leaching kinetics of copper ions. The results showed that the leaching amount of copper ions in the blast furnace slag-cement system that adsorbed copper ions basically met the national standard, and the solidified body age was 28 days,blast furnace slag content 30% is the smallest condition for the amount of copper ion leaching.The leaching model of copper ions in the blast furnace slag-cement system is the Elovich equation, which is a heterogeneous diffusion process. The longer the curing age is the slower the leaching process is completed and do not cause environmental pollution during long-term use.

Investigation of Mineral Hydraulic Binders Based on the Slag-Cement System Obtained with the Use of Vortex Electromagnetic Homogenization

2021 ◽  
Author(s):  
B. B. Khaidarov ◽  
D. S. Suvorov ◽  
D. V. Lysov ◽  
G. G. Luchnikova ◽  
M. E. Druzhinina ◽  
...  
Keyword(s):  
Slag Cement ◽  
Cement System

ON THE USE OF SLAG CEMENT COMPOSITIONS IN THE CONSTRUCTION OF WELLS

2017 ◽  
pp. 80-85
Author(s):  
V. P. Ovchinnikov ◽  
O. V. Rozhkova ◽  
N. A. Aksenova ◽  
P. V. Ovchinnikov
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Elevated Temperatures ◽  
Cement Mortar ◽  
Setting Time ◽  
Rheological Parameters ◽  
Slag Cement ◽  
Furnace Slag

In the article studies of oil-filled compositions with the addition of blast-furnace slag for strength at elevated temperatures are presented. The rheological parameters of the slag cement slag cement mortar, as well as the setting time, were studied. Conclusions are drawn about the prospects of further study of slag cementcontaining compositions.

Influence of hydrated lime on mechanical and shrinkage properties of alkali-activated slag cement

2021 ◽  
Vol 289 ◽  
pp. 123201
Author(s):  
Juan He ◽  
Wenbin Bai ◽  
Weihao Zheng ◽  
Junhong He ◽  
Guochen Sang
Keyword(s):  
Hydrated Lime ◽  
Slag Cement ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated
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