slag cement effect on set time of concrete

A REVIEW STUDY ON THE EFFECT ON PROPERTIES OF …

A REVIEW STUDY ON THE EFFECT ON PROPERTIES OF CONCRETE BY USING RICE HUSK ASH (RHA) AS PARTIAL REPLACEMENT FOR CEMENT IN CONCRETE Aqil Haider Jaisi1, Vineet Kumar Singh2 1M.Tech Scholar in P.K. University, Shivpuri (M.P.) 2Assistant Professor in Civil Engineering, P.K. University, Shivpuri (M.P.)

(PDF) Effect of admixtures on the setting times of high ...

The effect of silica fume (SF), metakaolin (MK), fly ash (FA) and ground granulated blast-furnace slag (GGBS) on the setting times of high-strength concrete has been investigated using the ...

(PDF) Effect of admixtures on the setting times of high ...

While the SRA was found to have negligible effect on the setting times of normal strength concrete, it exhibited a rather significant retarding effect when used in combination with superplasticiser...

Engineering Benefits of GGBS in Concrete – Mastercivilengineer

The initial set of all concretes is extended in cold conditions and the effect of cold temperatures on extending the initial setting time of GGBS concrete is more pronounced. This effect can be 10 to 12 hours depending on conditions, concrete constituents, and the section size of the pour.

The effect of microencapsulated phase change materials on ...

The effect of microencapsulated phase-change materials (MPCM) on the rheological properties of pre-set geopolymer and Portland cement mortars was examined. Microcapsules with hydrophilic and hydrophobic shells were compared. The shear rate dependency of the viscosities fitted well to a double Carreau model.

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

What Is Slag Cement? A fine white powder that can be used as a SCM to enhance the properties of concrete In the presence of moisture exhibits hydraulic properties similar to portland cement What Is Slag Cement? Non-metallic molten material (slag) is diverted from the waste stream of iron ore blast furnace

Corrosion Resistance of Concrete - Portland Cement Association

Unfortunately, C1556 is very time consuming and requires about three months to complete. ASTM C1543 (AASHTO T259), Standard Test Method for Determining the Penetration of Chloride Ion into Concrete by Ponding, has been used for decades by many highway agencies. A concrete slab is cast and moist cured for 14 days, then air cured to 28 days.

Evaluation of Grade 120 Granulated Ground Blast Furnace Slag

This study addresses the amount of the delay in set time and strength gain and the effect on the time between initial and final set as compared to non -GGBFS concrete. ASTM C 989 (Standard Specification for GGBFS for use in Concrete and Mortars), adopted in November 1982, provides for three strength grades of GGBFS depending

Effect of curing time on granulated blast-furnace slag ...

The higher amount of ground granulated blast-furnace slag, the longer final setting time. With regard to the chemical composition, the increase of ground granulated blast-furnace slag in the cement leads to an increase of SiO 2 and Al 2 O 3, and a decrease of …

CiteSeerX — PROPERTIES OF TERNARY CEMENT CONCRETE …

ABSTRACT: Properties of ternary cement concrete, such as set time, strength, datum temperature, and maturity of concrete containing various slag-blended cements and 15% Class C fly ash, were investigated. The slag-blended cements were made of Type I or I/II cement clinker with 20, 25, or 35 % ground granulated blast-furnace slag (GGBFS).

Mineral Slag used as an Alternative of Cement in Concrete

temperature exposure, the first set of concrete specimens were removed from the furnace and allowed to cooldown in the laboratory condition. To maintain the temperature constant for a given time [14], [15], the remaining concrete specimens were left at the same temperature for 2 h.

Ground Granulated Blast Furnace Slag GGBS Concrete

The properties of GGBS concrete mix are similar to the effects of Fly Ash concrete as described in our Fly Ash Concrete post. Effects on setting time, early strength and final strength are similar to Fly Ash mixes. GGBS concrete will set more slowly than ordinary Portland cement concrete and will gain strength more slowly.

Effect of Slag Cement on Drying Shrinkage of Concrete

Abstract: The effect of a partial replacement of cement with slag cement on free shrinkage is evaluated for curing periods between 3 and 28 days. Mixtures include concrete containing different replacement levels of slag cement (30, 60, and 80% by volume) cast with limestone, granite, or quartzite coarse aggregate.

Effect of Fly Ash on Setting Time| Concrete Construction ...

Effect of Fly Ash on Setting Time. ... But many times fly ash is used in concrete as a cement replacement in combination with a water reducer. These concretes may set more slowly than a straight cement mix would. If fly ash is not being used as a cement replacement, but is added just to increase fines, it won't retard setting. ...

Slag in the mix design - Concrete Engineering general ...

Slag cement is a wonderful material to work with, from 4,000 psi concrete to 15,000 psi concrete. I've used 50% in 13,000 psi concrete and it works beautifully. Don't be afraid to use 30% or 40%, you won't be sorry. Unfortunity, slag is not available in all areas, especially hard to find in the West.

Effect of blended steel slag–GBFS mineral admixture on ...

The experimental study here presented compares the effects of steel slag and GBFS on some properties of cement to put forward the theoretical basis of using steel slag and GBFS as a blended mineral admixture for concrete. Steel slag has a negative effect on the early strength as well as the late-age strength.

Effect of a Retarding Admixture on the Setting Time of ...

concrete from the adverse effects of hot weather, admixtures are usually incorporated in it. The objective of this paper is to investigate the effects of a retarding admixture (ASTM C 494 Type D) on setting time of cement pastes. The setting time tests were performed under three different curing conditions (temperature & relative humidity).

Effect of blast furnace slag powder on compressive ...

Cement concrete mix: The cement concrete mix was prepared as per the procedure given in the relevant IS 10262:2009 .For optimal dosage selection of blast furnace slag powder in the concrete mix, modified cubes (% ranging from 5 % to30 % Ta-ble 5) are prepared and compared with plain cement concrete cubes.

EFFECTIVENESS OF USING OF LIMESTONE AS CEMENT …

slag cement: (Ezziane et al., 2010); silica fume: (Gulbandilar & Kocak, 2013); metakaolin: (Snelson et al., 2011)) on the setting time of fresh concrete. The increase in the replacement of Portland cement by fly ash, slag cement, silica fume or metakaolin clearly increases the initial setting time of concrete relative to the control mix.

INFLUENCE OF SODIUM SILICATE AMOUNT ON THE SETTING TIME ...

influence of sodium silicate amount on the setting time and exo temperature of a complex binder consisting of high-aluminate cement, liquid glass and metallurgical slag The use of industrial wastes for concrete makes it possible not only to improve major characteristics of cement and concrete but also to solve some environmental problems as well.

Properties of Hardened Concrete with Blast Furnace Slag

By and large, compressive strength of slag concrete gradually increases from 1-5 days and lower than that of concrete without slag, but slag concrete strength matches strength of controlled concrete from 7-28 days. Moreover, slag concrete compressive strength surpasses strength of …

Frontiers | The Effect of Blast Furnace Slag/Fly Ash Ratio ...

The aim of this study was to determine the effects of partial fly ash substitution in to a series of alkali-activated concrete based on a high-MgO blast furnace slag BFS. Mixes were activated with various amounts of sodium silicate at alkali modulus (mass ratio SiO2/Na2O) values of 1.0, 0.5, and 0.25. The results showed that, an increase in the fly ash content extended the initial setting time ...

Effect of Temperature on the Setting Behavior of Concrete ...

The effects of fluctuating temperatures on the setting times of concrete mixtures made with different water-to-cement ratios, supplementary cementing materials (SCMs), and SCM dosages are ...

Properties of Hardened Concrete with Blast Furnace Slag

At 7 days and beyond, the flexural strength of slag concrete is equal or exceeds controlled concrete flexural strength. The larger flexural strength of blast furnace slag concrete is the result of the stronger bond which is achieved in cement-slag-aggregate system due to slag particle shape and surface texture. Figure-4 shows slag particles.

How Long Does It Take Concrete To Dry, Set, Cure?

Temperature affects setting time, with concrete setting up more quickly the warmer the air and ground temperature. At 100°F it can take less than 2 hours to set, 4 hours at 80°F, 8 hours at 60°F, and up to 19 hours at 30°F. In colder temperatures, it will take longer for concrete to set.

Influence of Curing Time on the Drying Shrinkage of ...

Plain cement concrete, ground granulated blast furnace slag (GGBS) concrete, and fly ash concrete were designed. Three wet curing periods were employed, which were 2, 5, and 8 days. The drying shrinkage values of the concretes were measured within 1 year after wet curing. The results show that the increasing rate of the drying shrinkage of concrete containing a mineral admixture at late age …

Activ Slag - Ieaust transactions

77. Collins F, Sanjayan JG. Workability and me- chanical properties alkali activated slag concrete. Cement and Concrete, 1999a;29(3):455-458. 78. Collins F, Sanjayan JG. Effects of ultra fine ma- terials on workability and strength of concrete containing alkali activated slag as the binder. Cement and Concrete Research, 1999b;29(3):459- 462. 79.

Slag set time in cold weather - Structural engineering ...

RE: Slag set time in cold weather. concretemasonry (Structural) 13 Dec 07 15:50. No question about the retarding effects or slow strength gain when you are using fly ash and slag. The cool weather temperatures magnify the effects, no matter what the concrete temperature at placement. Even though you may get a 28 day cylinder strengths specified ...

What is slag cement

For example, the addition of slag cement usually results in reduced need for water, faster time of set, improved pumpability and finishability, higher 28-day strength, lower permeability, resistance to sulfate attack and alkali-silica reactivity (ASR), and lighter color. View View Download Blended Cements - SCIC #21

Fly ash and Blast Furnace Slag for Cement Manufacturing

Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnaces. When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition. GBFS is said to increase durability of concrete due to an increased setting time, which reduces

Concrete Set Time - Slag Cement Association

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.

Blended Cements: Improving Concrete Properties

ternary cement concrete can achieve the same flowability as OPC concrete. o Fly ash replacement in binary cements generally increases paste/concrete set time when compared with OPC concrete. o Slag replacement in ternary cements can either increase or decrease the set time, depending on the type of clinker used when compared with binary cement ...

233R-17: Guide to the Use of Slag Cement in Concrete and ...

Mg air-cooled. According to the Slag Cement Associa-tion, 2,500,000 Mg of slag cement and 540,000 Mg of slag blended cement were used in concrete and other construc-tion applications (some of which used imported granules).

Effects of Different Content of Phosphorus Slag Composite ...

Phosphorus slag (PS) and limestone (LS) composite (PLC) were prepared with a mass ratio of 1:1. The effects of the content of PLC and the water/binder ratio on the mechanical properties, durability and dry shrinkage of concrete were studied via compressive strength, electric flux, sulfate dry/wet cycle method, saturated drainage method, isothermal calorimeter, adiabatic temperature rise ...

Slag Cement: The Other SCM

Time of Set – typically increases with increasing slag cement contents (above 25%) • Depends on temperature and the specific portland cement • 30 – 60 minutes @ 50% replacement, 73 ºF • Minimal change above 85 ºF Source: ACI 233.R - 17 Guide to the Use of Slag Cement in Concrete …

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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