This paper describes the influence of the specific surface area of blastfurnace slag and the existence of calcium sulfate in blastfurnace slag on the effect of calcium hydroxide powder, which is considered to accelerate the reaction of blastfurnace slag in cement containing blastfurnace slag, for the purpose of improving a characteristic of cement containing blastfurnace slag, in order to ...
Slag cement (also called ground granulated blast furnace slag) is a hydraulic cement produced during the reduction of iron ore to iron in a blast furnace. Molten slag is tapped from a blast furnace, rapidly quenched with water ("granulated"), dried and ground to a fine powder.
Slag is the glasslike byproduct left over after a desired metal has been separated from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide. However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re .
Steel slag, a byproduct of steel making, is produced during the separation of the molten steel from impurities in steelmaking furnaces. The slag occurs as a molten liquid melt and is a complex solution of silicates and oxides that solidifies upon cooling.
Effect of Blast Furnace Slag Powder and Fly Ash on Durability of Concrete Mixed with Seawater. According to the report of the United Nations, it is said that twothird of world population would be influenced by water shortage before 2050. To use fresh water effectively, the usage of seawater in concrete industry seems imperative.
During stable casting, powder feeding rate, powder melting rate and the velocity of slag ﬂ ow in the space between slab and the mould as well as the velocity of slag outﬂ ow from the mould should reach the level ensuring stationary (mould oscillation not taken into account) ﬂ ow of powder .
The iron is used to produce steel, and the molten slag is converted to a cementlike material by rapidly cooling it with water. This rapid cooling, called quenching, creates glassy granules, which are then ground into the fine powder known as slag cement. Slag cement is as old as ironmaking itself.
Metakaolin and slag mixes that with the highest compressive strength results (80% metakaolin and 20% slag in this case) were chosen and incorporated with limestone powder to study its effect on ...
Composite Materials of Aluminium/Granulated Slag and Aluminium/ArcFurnace Dust Prepared by Powder Metallurgy Techniques A. Torres, J. Miranda, J. García, L. Narváez, R. Hernández1 and O. Domínguez Instituto de MetalurgiaUASLP, 550 Sierra Leona CP 78210, San Luis Potosi, SLP/Mexico.
Effects of steel slag powder on the workability and mechanical properties of concrete were investigated by Li YunFeng et al . Mechanical properties can be improved further due to the synergistic effect and mutual activation when compound mineral admixtures with steel slag powder and blast furnace slag powder mixed with concrete, as a result of this study.
Groundgranulated blast furnace slag (GGBS): Groundgranulated blast furnace slag is a byproduct from the blast furnaces used in the iron manufacturing industry. GGBS is obtained by quenching molten iron slag (a byproduct of iron and steel making) in water or steam, to produce granular product then dried and ground into a fine powder.
The results indicate that, with the increasing slag content, the setting time decreases; the compressive strength firstly increases and then decreases after the slag replacement exceeds a critical value. Additionally, an optimum content for limestone powder in the metakaolinslag blends is around 15%.
Hongji vertical mill and trapezium grinder mill are two kinds of commonly used energysaving grinding machines in the slag powder processing plants. They are suitable for grinding granulated blast furnace slag with feeding size not exceeding 7mm.
The invention relates to a preparation method of modified S95grade slag powder, belonging to the technical field of building materials. The modified S95grade slag powder comprises the following raw materials in percentage by weight: 50%85% of S95grade slag powder, 10%40% of superfine slag micropowder and 3%15% of semihydrated gypsum.
The study tries to divide the effect of superfine slag powder into pozzolanic effect and filling effect,using method of specific tenacity analytic and factor of enhancement effect to a analysis results are that: the pozzolanic effect is the main factor and is amount to 80% in the cement,the effect is improved with the increasing of content and the time;the filing effect is weakness ...
for the effects on the strength and durability characteristics. Li Yunfeng, Yao Yan, Wang Liang (2009) investigated effects of steel slag powder on the workability and mechanical properties of concrete. Experimental results show that mechanical properties