effect of slag on pumpability concrete

effect of slag on pumpability concrete

effect of slag on pumpability concrete

slag cement equipment – Grinding Mill China. effect of slag on pumpability concrete manufacturer in Shanghai, China. effect of slag on pumpability concrete is manufactured from Shanghai Xuanshi,It is . Read More [greenbuild] Green concrete: fly ash vs. slag cement

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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.

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Pumpability of Blast-Furnace Slag Aggregate Concrete

Title: Pumpability of Blast-Furnace Slag Aggregate Concrete Author(s): Hideo Kasami, Tadashi Ikeda, Shinichi Numata, and Hisamitsu Harada Publication: Symposium Paper Volume: 79 Issue: Appears on pages(s): 1143-1164 Keywords: absorption; aggregates; blast furnace slag; coarse aggregates; compressive strength; field tests; fine aggregates; porosity; pumped concrete; ready-mixed concrete;

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Effect Of Slag On Pumpability Concrete In Nigeria

Effect Of Slag On Pumpability Concrete In Nigeria. We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment. And they are mainly used to crush coarse minerals like gold and copper ...

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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.

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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

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Effect of slag cement on the properties of ultra-high ...

Nov 30, 2018  Abstract. This study investigates the effects of replacing a portion of Portland cement with slag cement (0%, 25%, 50% and 65% by mass) on the properties of plain ultra-high performance concrete (UHPC) mixes. It is observed that slag cement substantially enhances the flowability of the UHPC mixes and reduces the superplasticizer dosage.

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Effects of steel slag powder on workability and durability ...

Aug 05, 2014  高达10%返现  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

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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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Influence of fines content on durability of slag cement ...

May 15, 2016  Blast furnace slag cement (CEM III/B (S) 32.5 N) with slag content of 68% was used in production of the slag cement concretes.The cement complied with BS/EN 197-1. The properties of the cement are presented in Table 3.Two types of chemical admixtures were pretested to determine the optimum type for concrete production; a new generation superplasticizer based on modified

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effect of slag on pumpability concrete

slag cement equipment – Grinding Mill China. effect of slag on pumpability concrete manufacturer in Shanghai, China. effect of slag on pumpability concrete is manufactured from Shanghai Xuanshi,It is . Read More [greenbuild] Green concrete: fly ash vs. slag cement

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Effects of slag addition on bond strength of 3D printed ...

Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental ... concrete printing, owing to its thixotropic property as mentioned in (Tay et al. 2017). In the ... The mix design was aimed to meet the requirement of pumpability during delivery through the

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Effects of steel slag powder on workability and durability ...

Aug 05, 2014  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

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EFFECT OF ULTRA FINE SLAG REPLACEMENT ON DURABILITY

The total pore volume of concrete also decreases as the slag fineness becomes higher6. Slag of 786 m 2/kg fineness has a 50% smaller diffusion coefficient than a normal OPC 6. This coefficient drops more dramatically as the fineness of the slag is improved. In this work, the effect of UFGGBS replacement on the durability and mechanical ...

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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

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On the use of blast-furnace slag in sprayed concrete ...

Sep 10, 2019  1. Introduction. Sprayed concrete is a construction technique used worldwide in underground constructions due to technical and economic advantages over conventional concrete , .Approximately 22.8 million cubic meters of sprayed concrete are expected to be used in the year 2020 and around 37% of that amount will be consumed in tunneling and mining projects in Europe .

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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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Properties of Hardened Concrete with Blast Furnace Slag

Color of concrete incorporating slag Due to light color of blast furnace slag, color of slag concrete is lighter in comparison with conventional concrete. Moreover, deep blue-green color shown by interior part of slag concrete and can be noticed from slag concrete broken parts, for

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Influence of Pumping on Fresh Concrete Properties for SCC

Pumpability of Self Consolidating Concrete Mixing time and mixing speed Lowke, D.; Schießl, P.: Effect of mixing energy on fresh proporties of SCC in: Proceedings of the 4th International RILEM Symposium on Self-Compacting Concrete, Chicago, USA, 2005 Optimum mixing time: SCC. B is longer than SCC. A Chemical additive contents: SCC.

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Differences between fly ash, slag and silica fume - Low ...

Supplementary Cementitious Materials (SCM) are added to concrete mixtures for various reasons including improving durability, decreasing permeability, aiding in pumpability and finishability, mitigating alkali reactivity and improving the overall hardened properties of concrete through hydraulic or pozzolanic activity or both. SCM are added to concrete in addition to or as a partial ...

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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

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Effect Of Granulated Slag As Sand Replacement In Concrete

Effect Of Using Granulated Steel Slag In. Manufactured sand.But in this paper only the effect of using granulated steel slag in concrete mixes as an fine agate on compressive strength and workability is discussed.The properties of steel slag are also verified with the addition of ggbs ground granulated blast furnace slag as a replacement for cement.

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Effect of fly ash and slag on the fracture characteristics ...

Hence, studies were taken up to investigate the effect of fly ash and slag on the fracture characteristics of HPC. Beam specimens (geometrically similar and single size variable notch) with locally available fly ash (25%) and slag (50%) as cement replacement materials were prepared and tested in a servo-controlled Universal Testing Machine (UTM ...

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What are the Factors Affecting Workability of Concrete?

Silica fume are used as pumping aid for concrete when used as 2 to 3% by mass of cement. The use of slag cement also improves workability but its effect depends on the characteristics of the concrete mixture in which it is used.

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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.

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

the following effects on concrete: • Improved workability, pumpability, slump retention, and finish ability are due in part to the smooth, dense surfaces of GGBFS particles. The slag absorbs little or no water during mixing, resulting in a reduced water demand for the mix.

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EFFECT OF ULTRA FINE SLAG REPLACEMENT ON DURABILITY

The total pore volume of concrete also decreases as the slag fineness becomes higher6. Slag of 786 m 2/kg fineness has a 50% smaller diffusion coefficient than a normal OPC 6. This coefficient drops more dramatically as the fineness of the slag is improved. In this work, the effect of UFGGBS replacement on the durability and mechanical ...

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Effects of High-Volume Ground Slag Powder on the ...

Massive high-strength concrete structures tend to have a high risk of cracking. Ground slag powder (GSP), a sustainable and green industrial waste, is suitable for high-strength concrete. We carried out an experimental study of the effects of GSP with a specific surface area of 659 m2/kg on the hydration, pore structure, compressive strength and chloride ion penetrability resistance of high ...

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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%.

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Effect Of Granulated Slag As Sand Replacement In Concrete

Effect Of Using Granulated Steel Slag In. Manufactured sand.But in this paper only the effect of using granulated steel slag in concrete mixes as an fine agate on compressive strength and workability is discussed.The properties of steel slag are also verified with the addition of ggbs ground granulated blast furnace slag as a replacement for cement.

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

Specifications For Slag Cement ASTM C989 AASTHO M 302 ASTM C595 AASHTO M 240 DOT specifications Slag Cement’s Effect On Concrete Typical replacement values Effects on compressive strength Reducing permeability Sulfate attack Mitigation Slag Cement and Environmental Initiatives LEED v.4 Industry Average EPD LCA of Concrete Mixtures

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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

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slag (GGBF) in slab-on-grade concrete - Structural ...

Jul 28, 2005  Blast-furnace slag blended cement concrete tends to have better pumpability and can be used in mass concrete applications to reduce the peak temperature rise and tendency to crack due to heat development. Suggest you discuss with your ready-mix or blast-furnace slag

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Effects of Aggregate Properties on Concrete - Size, Grading

May 02, 2017  Variation in the size of Aggregates changes the water demand, cement content, micro-cracking (strength) in concrete. It also effects pumpability, and durability of concrete. Grading of aggregates depends on the proportions of coarse and fine aggregate. If grading of aggregate is varied, it also changes cement paste content (cost economy), workability of the mix,

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Factors affecting durability of concrete • Aggregate ...

Jan 27, 2010  Effects of Substances on Concrete and Guide to Protective Treatments discusses the effects of hundreds of chemicals on concrete and provides a list of treatments to help control chemical attack. Resistance to Sulfate Attack: Excessive amounts of sulfates in soil or water can attack and destroy a concrete that is not properly designed.

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Effects of PET Fibers on Pumpability, Shootability, and ...

Nov 28, 2019  Polyethylene terephthalate (PET) fiber from waste plastic bottles is an environmentally friendly fiber that can improve the mechanical properties of wet-mix shotcrete. The main objective of this paper is to investigate the effects of PET fiber parameters on pumpability, shootability, and mechanical properties of wet-mix shotcrete. For this purpose, the orthogonal test based on three

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Effect of fly ash and slag on the fracture characteristics ...

Hence, studies were taken up to investigate the effect of fly ash and slag on the fracture characteristics of HPC. Beam specimens (geometrically similar and single size variable notch) with locally available fly ash (25%) and slag (50%) as cement replacement materials were prepared and tested in a servo-controlled Universal Testing Machine (UTM ...

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fly ash and slag powder differences and Features - Cement Silo

The setting time of concrete mixed with slag powder is shorter than that of concrete mixed with fly ash (Figure 2). Figure 2 Influence of slag powder and fly ash on the initial setting time Pumpability and shine collection: mixing slag powder and fly ash into concrete is equivalent to filling the voids of concrete with fine particles, which can ...

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