effect of slag on pumpability concrete

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Materials | Free Full-Text | Effects of Steelmaking Slag

Strain sensors can indicate the conditions of concrete structures, but these sensors are only capable of measuring local behaviors of materials. To solve this problem, researchers have introduced conductive materials that can monitor the overall behavior of concrete structures. Steelmaking slag, which contains large amounts of iron oxide (Fe2O3), is conductive, and researchers have considered

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Plug & abandonment of offshore wells: Ensuring long-term well

Blast Furnace Slag (BFS) Blast Furnace Slag (BFS) is a by-product of steel manufacture during operation of a blast furnace. The BFS is accumulated on top of the molten iron in the furnace, and consists of lime, silica, alumina, magnesia and iron oxides.

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Effects of Ground Granulated Blast Furnace Slag in Portland

of the overall cement matrix. Using slag cement as a replacement material for OPC changes the rate of strength gain because the hydration properties of slag cement are different from OPC. Slag cement is a latent hydraulic material, meaning that with use of this material, the rate of strength gain will be lower when compared to OPC concrete.

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What are the effects of slag powder in mortar?

Since slag powder differs greatly from fly ash and silica fume in the chemical composition and particle morphology, it exhibits different behaviors and plays different roles in cement concrete. Water Demand; It is generally believed that slag powder has little effect on the water demand.

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PDF) Design and Control of Concrete Mixtures

In order to determine the effect of a significant glass cullet content on the properties of concrete, glass powder was used as a filler and 100% glass aggregate. The cement–glass composite has

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Corrosion of Embedded Materials - Portland Cement Association

Pozzolans and slag also increase the concrete resistivity thus reducing the corrosion rate even after it initiates. ACI 318-11, Building Code Requirements for Structural Concrete provides minimum concrete cover requirements that will help protect the embedded metals from corrosive materials. Additional measures to mitigate corrosion of steel

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Ground Granulated Blast Furnace Slag (GGBS) | Chemical

But percentages of 20 to 80 are commonly used. Greater the percentage of GGBS, greater will be the effect of GGBS in concrete. The concrete made with Ground Granulated Blast Furnace Slag cement sets more slowly compared to ordinary Portland cement concrete based on the amount of GGBS in the cementations material.

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Effects of ultra-fine materials on workability and

Strength of AAS concrete increases with increasing slag fineness 10, 11, 12, but at the expense of reduced workability and causing false setting 11, 12. Roy and Silsbee report high early and later strength of AAS pastes containing <4% CSF addition.

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Effect of Cement Content on Durability of Fly Ash-Carbide

The results show that when the optimal cement content is 150kg/m 3 and the fly ash —carbide slag content is 350kg/m 3, the impermeability, the frost resistance, the erosiveness resistance and the wear resistances of residue concrete are obviously improved, which can meet the pavement surface requirements of rural roads in the Three Gorges

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The Effect of Alkaline Solution-to-Slag Ratio on

Permeability of concrete has a direct impact on its durability, so, in this study, a series of tests were arranged to examine the effect of alkaline solution-to-slag ratio on water impermeability, chloride permeability, short-term and total water absorption, and compressive strength of AASC specimens.

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Design and Construction of Auger Cast Piles

In the grout mix, fly ash and slag are often substituted for a portion of the cement for 24% to 30% to produce mixes with higher workability and pumpability , reduced bleeding, and reduced shrinkage. Grout is so fluid that the workability is typically measured using a flow cone. For concrete a pea-gravel size aggregate with around 42% sand

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Effect of Usage of Admixture in Concrete

The use of admixtures offers certain beneficial effects to concrete like improved workability, acceleration or retardation of setting time, reduce water cement ratio, and so on. There are two basic types of admixtures available: chemical & mineral. Admixtures like flyash, silicate fume, slag comes in the category of mineral admixtures.

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Effect of ground granulated blast-furnace slag on the

The hydration process of cement paste blended with ground granulated blast-furnace slag (GGBS) was investigated using calorimetric and electrical methods. The effect of GGBS on early-age hydration was studied by examining electrical resistivity curves, heat of hydration curves and their rate curves.

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GGBS - Ground Granulated Blast Furnace Slag for Concrete!

In the production of high quality-improved slag cement, such as Portland Blast furnace cement (PBFC) and high slag blast furnace cement (HSBFC). In such cements GGBS content ranges typically from 30 to 70%. In the production of ready-mixed concrete or site-batched durable concrete.

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Slag Cement - Lehigh Hanson, Inc

Replacing a portion of portland cement with slag cement – typically from 30% to 50% – significantly lowers the environmental impact of concrete. Slag cement requires nearly 90% less energy to produce than portland cement. According to the Slag Cement Association, substituting 50% slag cement for portland cement reduces greenhouse gas

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Slag cement with fly ash - Slag Cement Association

Pumpability with slag cement and fly ash is generally improved largely due to the addition of fines to the matrix. Finishability is also improved. Hardened Properties. Strength. At 28 days, both slag cement and Class C fly ash will achieve higher strength than Class F fly ash and straight portland cement in concrete mixtures. Permeability. At normally specified replacement levels, concrete made with slag cement will have lower permeability than concrete made with Class F or C fly ash when

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Effect of blast furnace slag powder on compressive strength

Compressive strength of blast furnace slag concrete with different dosage of slag was studied as a partial replacement of cement. From the experimental investigations, it has been observed that, the optimum replacement of Ground Granulated Blast Furnace Slag Powder to cement without changing much the compressive strength is 15%.

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Pump up your concrete strength with slag - Seattle DJC.com

A record 3.5 million metric tons of slag cement was shipped for use in concrete and construction applications in 2004, a 15.5 percent increase over 2002, according to the Slag Cement Association.

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CiteSeerX — Effect of Copper Slag as a Partial Replacement

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Utilization of industrial waste or secondary materials has encouraged in construction industry for the production of concrete because it contribute to reducing the consumption of natural resources. Copper slag is one of the materials that is considered as a industrial waste which can be used in construction Industry.

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Effect of Blast Furnace Slag Powder and Fly Ash on

Jul 24th, 12:00 AM Jul 26th, 12:00 AM. 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 two-third of world population would be influenced by water shortage before 2050.

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UNDERSTANDING THE PUMPABILITY OF CONCRETE

effect of mixture design on pumpability are presented in the paper. The concept of Real Paste Content is brought forward as a tool to help engineers clearly understand the mechanisms taking place during the transport of concrete under pressure. CONCRETE PUMPING The pumpability of concrete is not an easy concept to define and requires the

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