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effect of slag on pumpability concrete

Effects of Ground Granulated Blast Furnace Slag in

2001 by slag cement manufacturers and the Slag Cement Association, the American Concrete Institute officially reviewed and changed the terminology from GGBFS to slag cement (ACI Committee 233, 2004). The term slag cement will be used throughout this paper when referring to finely-ground granulated blast-furnace slag.

Slag Cement Questions

Slag cement generally improves workability, finishability and pumpability of plastic concrete. It may provide a small decrease in water demand (see SCIC #5). Slag cement will tend to increase time of initial set, which is often a benefit in warm weather.

Pumpability of Blast-Furnace Slag Aggregate Concrete

Concrete with air-cooled blast-furnace slag indicated higher pumping pressure than that with crushed stone due to pressure absorption, while no significant change was

The Effect of Slag and Limestone Filler on Resistivity

Nov 22, 2012 Concrete was tested for compressive strength, sorptivity, resistivity, and water penetration under pressure. The volume of paste in all concrete mixes was the same. Results showed the effect of slag on concrete transport properties. The effect of limestone filler was minimal either admixed solely or in conjunction with slag.

Slag cement with fly ash Slag Cement Association

Concrete made with slag cement can have faster set times than concrete made with fly ash (Figure 2). Pumpability and Finishability. Pumpability with slag cement and fly ash is generally improved largely due to the addition of fines to the matrix. Finishability is also improved.

Effect of slag cement on the properties of ultra-high

Nov 30, 2018 Effect of slag cement on the flowability of UHPC mixes (the measuring cone has a 100-mm bottom diameter; thus 100-mm spread indicates no spread at all). The air content of UHPC mixes was measured in the fresh state using the unit weight method and characterized in the hardened state using the ASTM C457 linear traverse method.

The Effect of Slag and Limestone Filler on Resistivity

Concrete was tested for compressive strength, sorptivity, resistivity, and water penetration under pressure. The volume of paste in all concrete mixes was the same. Results showed the effect of slag on concrete transport properties. The effect of limestone filler was minimal either admixed solely or in conjunction with slag.

Optimizing Concrete Pavement Mixes with Slag Cement

Feb 08, 2015 Effect of Slag Cement on Flexural Strength 0% 20% 40% 60% 80% 100% 120% 140% 728 Flexural Strength, % of 28 day OPC Age, days 100% OPC 50% OPC/50% Slag Cement OPC @28 days = 830 psi (5.7 MPa) Aggregate More Calcium Silicate Hydrate WCPA Annual Concrete Pavement Workshop Bruce Blair Presentation February 12, 2015 26 of 41

Effects of Steel Slag Powder on Workability and Durability

Due to its huge production and hazardous effects due to dumping of slag there is a need to study its effect on concrete with higher replacement ratios. New methods need to be developed so that

Making Concrete Pumpable| Concrete Construction Magazine

Jan 28, 2020 Factors that Impact Pumpability A wide array of factors can impact concrete pumpability, Bui notes, such as the dimension, shape, gradation, and volume of aggregates. Supplementary materials like fly ash, silica fume, slag, and limestone also influence the rheology of the mix and therefore its pumpability.

CONCRETE 101

expanded shale, clay and slag. These are used to produce structural How does high cement content effect pumping (i.e. 3000 PSI Fly ash increases the pumpability of concrete by making it more slippery without adding more water. It’s small, spherical shape is the

The Synergistic Effect of Nano-Silica with Slag on Frost

The frost resistance of concrete is one of the most important factors for its durability. Supplementary cementitious materials could effectively improve the frost resistance of concrete. On this basis, the synergistic effect of nano-silica (NS) with slag on the frost resistance of concrete is better than the single, which was investigated. Nano-silica and slag were employed as a partial

The Effect of Steel Slag Coarse Aggregate on the

This work performs experimental investigations on concrete made with difference replacement percentage of first-class burnt clay brick aggregate (0, 10, 20, 30, 40, 50, 60, 80, and 100%) by steel slag (SS) aggregate. The aim is to evaluate the mechanical properties as well as durability performances, additionally, water absorption porosity test is performed to investigate the influence of

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

Effect of Steam Curing on the Properties of Slag-Cement

Concrete based on BFCSimilar to the two previous cases, at early ages, the steamed concrete is always predominant, beyond it can be said that (Figure 7):-In standard medium: The strength of steamed concrete containing admixture is higher as 11.2%, probably due to the high slag content in BFC, i. e. 40%.-In the marine environment: the strength

The Effect of Alkaline Solution-to-Slag Ratio on

Abstract. This study investigated the effect of alkaline solution-to-slag ratio on permeability of Alkali Activated Slag Concrete (AASC). 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

Effects of steel slag powder on workability and durability

The workability and durability of a type of sustainable concrete made with steel slag powder were investigated. The hydrated products of cement paste with ground granulated blast furnace slag (GGBFS) alone or with a combined admixture of GGBFS-steel slag powder were investigated by X-ray diffraction (XRD). Furthermore, the mechanism of chemically activated steel slag powder was also studied.

Effect of admixtures on pumpability for high-strength concrete

In this study, the effects of mineral and chemical admixtures on pumpability of high-strength concrete were investigated through measuring rheological properties of concrete and the lubricating layer.

Effect of blast furnace slag powder on compressive

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%.

slag in concrete Topic

Mar 01, 2021 The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. Various types of slag are produced: Blast-furnace slag—The nonmetallic product, consisting essentially of silicates and aluminosilicates of calcium and of other bases, that is developed in a molten condition simultaneously with iron in a blast

Effects of Steel Slag Powder on Workability and Durability

Due to its huge production and hazardous effects due to dumping of slag there is a need to study its effect on concrete with higher replacement ratios. New methods need to be developed so that

The Synergistic Effect of Nano-Silica with Slag on Frost

The frost resistance of concrete is one of the most important factors for its durability. Supplementary cementitious materials could effectively improve the frost resistance of concrete. On this basis, the synergistic effect of nano-silica (NS) with slag on the frost resistance of concrete is better than the single, which was investigated. Nano-silica and slag were employed as a partial

Fly Ash, Slag, Silica Fume, and Natural Pozzolans, Chapter 3

and the desired effects on the concrete (Helmuth 1987 and ACI 232 1996). SLAG Ground granulated blast-furnace slag (Fig. 3-5), also called slag cement, is made from iron blast-furnace slag; it is a nonmetallic hydraulic cement consisting essentially of sili-cates and aluminosilicates of

CONCRETE 101

expanded shale, clay and slag. These are used to produce structural How does high cement content effect pumping (i.e. 3000 PSI Fly ash increases the pumpability of concrete by making it more slippery without adding more water. It’s small, spherical shape is the

Slag Cement: The Other SCM Institute for Transportation

Apr 08, 2019 Slag cement, previously known as ground-granulated blast-furnace slag \⠀䜀䜀䈀䘀匀尩, has been used in concrete for well over 100 ye\ൡrs \⠀䄀䌀䤀 ㈀ ㄀㄀尩. The first recorded production in the US of blended cement containing both slag and portland cement was in 1896 對\⠀䄀䌀䤀 ㈀ ㄀㄀尩. \

The Effect of Alkaline Solution-to-Slag Ratio on

Abstract. This study investigated the effect of alkaline solution-to-slag ratio on permeability of Alkali Activated Slag Concrete (AASC). 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

The Effect of Steel Slag Coarse Aggregate on the

This work performs experimental investigations on concrete made with difference replacement percentage of first-class burnt clay brick aggregate (0, 10, 20, 30, 40, 50, 60, 80, and 100%) by steel slag (SS) aggregate. The aim is to evaluate the mechanical properties as well as durability performances, additionally, water absorption porosity test is performed to investigate the influence of

LEHIGH SLAG CEMENT PRODUCT DATA SHEET

LEHIGH SLAG CEMENT PRODUCT DESCRIPTION Lehigh Slag Cement conforms to ASTM C989/AASHTO M 302 standard specifications for “Slag Cement as a Constituent in Concrete and Mortars” and CSA A3001 “Cementitious Material for Use in Concrete.” Slag has cementitious properties similar to portland cement.

Effect of Steam Curing on the Properties of Slag-Cement

Concrete based on BFCSimilar to the two previous cases, at early ages, the steamed concrete is always predominant, beyond it can be said that (Figure 7):-In standard medium: The strength of steamed concrete containing admixture is higher as 11.2%, probably due to the high slag content in BFC, i. e. 40%.-In the marine environment: the strength

Effect of blast furnace slag powder on compressive

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%.

Aggregates for Concrete Memphis

blast-furnace slag—produce freshly mixed normal-weight concrete with a density (unit weight) of 2200 to 2400 kg/m. 3 (140 to 150 lb/ft. 3). Aggregates of expanded shale, clay, slate, and slag (Fig. 5-3) are used to produce struc-tural lightweight concrete with a freshly mixed density ranging from about 1350 to 1850 kg/m. 3 (90 to 120 lb/ft. 3).

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.

GGBS Ground Granulated Blast Furnace Slag for Concrete!

Furnace concrete reduces the risk of reinforcement corrosion improved slag cement, such improved slag cement, such improved slag cement, such because of high resistance to chloride ingress, It gives high resistance to the attack by sulphates and other chemicals. Furnace concrete thus ensures higher durability of the structure.