effect of slag on pumpability concrete

Combined Effect of Ground Granulated Blast Furnace Slag ...

Combined Effect of Ground Granulated Blast Furnace Slag and Metakaolin on Mechanical Properties of Self Compacting Concrete J.M.Srishaila1, Basawakiran.B.M2, K.N.Vishwanath3, P.Prakash4 Associate Professor1,3, PG Student2, Professor4 Dayananda Sagar College of Engineering, Bangalore

Effects of Fly Ash and Ground Granulated Blast-Furnaces ...

The experimental results showed the effect of steel slag powder on concrete performance. When compound mineral admixtures with steel slag powder and blast-furnace slag powder are mixed into concrete, the performance of concrete can be improved further due to the synergistic effect …

Ultra-High-Pumpability and High Performance Concrete ...

The fluidity of slag-based geopolymer paste and optimum content of superplasticizer in slag-based geopolymer mortar being as evaluation standard, adaptablities of slag-based geopolymer to naphthalene superplasticizer and melamine superplasticizer were studied.

Effects of Steel Slag Powder on Workability and Durability ...

signifi cant effects on the slumps of concrete. The initial setting time of concrete sample C1 was 17 hours and its nal setting time was 19 hours and 30 fi minutes (Fig.3). Compared to sample C1, the initial and fi nal setting times of concrete made with combined admixture of GGBFS-steel slag powder (samples C2-C5) were a little bit retarded.

Evaluation of Ground Granulated Iron Blast-Furnace Slag ...

AASHTO M 302-00 (Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortars) provide for three grades of GGBFS depending on their mortar strengths when blended with an equal mass of portland cement and compared to the mortar strengths of portland cement alone.

Strength and Durability of a 70% Ground Granulated Blast ...

Ground granulated blast furnace slag, concrete mixes, slag, GGBFS, high range water reducer, HRWR, portland cement, freeze-thaw, compressive strength No restrictions. This document is available to the public through the National Technical Information Center, Springfield, ia 22161 19. Security Classification (of this report) 20.

Sustainable Concrete: The Role of Performance-based ...

Mass Concrete Pumpability Finishability. 5 Energy Comfort Thermal Mass ... Urban Heat Island Effect ... National Laboratory Aesthetics Versatility Color Texture. 7 Portland cement 208 kg/m3 (350 lb/yd3) Slag cement 178 kg/m3 (300 lb/yd3) Concrete Mixtures Slag cement 178 kg/m (300 lb/yd Silica fume 30 kg/m3 (50 lb/yd3) Coarse aggregate 1068 kg ...

Effect of Ground Granulated Blast Furnace Slag as Partial ...

the High Volumes of slag concrete gains appreciable amount of strength at later ages (90 days onwards) and it increases with decrease in water/binder ratios. He found out that the strength of high volume of slag concrete is more at later ages because of slower hydration of slag with Ca(OH) 2 …

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.

Effect of Cementitious Blast-Furnace Slag ... - concrete.org

2. The permeability of concrete containing GGBF slag is less affected by increases in water-cement ratio than concrete containing regular portland cement alone. 3. The detrimental effects of accelerated curing on the permeability of concrete are virtually eliminated with cement blends containing GGBF slag greater than 50%. 4.

Optimizing Concrete Pavement Mixes with Slag Cement

• Slag cement enhances the lightness and brightness of concrete • Lighter concrete • provides greater safety on streets and parking lots due to higher reflectivity • Lighting requirements may be reduced • reflects more light, reducing the "urban heat island"effect • Slag cement reduces efflorescence by reduced permeability and

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

Using Slag to Enhance Concrete Performance

Effects on Fresh Concrete Wo rk a b i l i t y. Many contra c t o r s ... of GGBF slag on concrete compressive strengths. ... Improved uniformity, workability, pumpability, and ability to be consolidated. Reduced water demand. Better finishing properties.

LEHIGH SLAG CEMENT PRODUCT DATA SHEET

Lehigh Slag Cement is featured in a wide range of concrete and geotechnical applications including: ready mixed concrete, pre-cast, tilt-up, bridges, pavements, subbase, pre-stressed concrete members, concrete masonry units, architectural and concrete

Aggregates for Concrete - Department of Civil Engineering

The important characteristics of aggregates for concrete are listed in Table 5-2 and most are discussed in the following ... requirements, workability, pumpability, economy, poros-ity, shrinkage, and durability of concrete. Variations in ... The effect of a collection of various sizes in reducing

CONCRETE 101

CONCRETE 101 A guide to understanding the qualities of ... 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 physical characteristic of …

Fiber-reinforced concrete - Wikipedia

Effect of fibers in concrete. Fibers are usually used in concrete to control cracking due to plastic shrinkage and to drying shrinkage. They also reduce the permeability of concrete and thus reduce bleeding of water. Some types of fibers produce greater impact–, abrasion–, and shatter–resistance in concrete.

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 …

Georgia Chapter ACI Luncheon Benefits of Slag Cement In ...

Benefits of Slag Cement In Concrete October 28, 2015 . Prepared by: Wayne Wilson – LafargeHolcim . ... Slag Cement's Effect On Concrete Typical replacement values Effects on compressive strength Reducing permeability Sulfate attack Mitigation Slag Cement and

Experimental Study of the Effect of the Thermal ...

the EAF slag aggregates can represent up to 30% less conductivity in asphalt concrete or hot mix asphalt. The different levels of depth in the wearing course with slag aggregates will be at lower temperature. This is especially important during the spring, summer and early fall months in the

Effect of Ground Granulated Blast Furnace Slag as Partial ...

the High Volumes of slag concrete gains appreciable amount of strength at later ages (90 days onwards) and it increases with decrease in water/binder ratios. He found out that the strength of high volume of slag concrete is more at later ages because of slower hydration of slag with Ca(OH) 2 and water.

THE EFFECT OF SLAG ON DURABILITY OF LIGHTWEIGHT …

were only slightly higher than that of the air cured samples. The effect of curing condition on GGBS concrete is insignificant. The addition of slag benefits the improvement of the water permeability of concrete and was consistent for concrete under different curing environments and accelerated carbonation conditions.

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.