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...

Particle Size Effect of Ground Granulated Blast Furnace , Ground Granulated Blast Furnace Slag , performance concrete The partial replacement ,characteristics of concrete with partial replacement , A Review on Ground Granulated Blast-Furnace Slag , A Review on Ground Granulated Blast-Furnace Slag ,...

In this study, experimental results on alkali activated slag AAS concrete was assessed to achieve the optimum strength and workability The alkali contents of Na2O to activate slag in concrete were equal to 35, 45, 55, 65 and 75 by mass of slag and silicate moduli of alkali solution varied from 045, 065, 085 and 105 The compressive strength test of concrete specimens over 7, 28 ....

Figure 15 Effect of slag replacement Durability Carbonation The rate of carbonation of slag cement concrete has been reported to be higher than that of Portland cement concrete, especially at high slag replacement valu In all cases, the rate of carbonation is related directly to the compressive strength of concrete ,...

Jun 19, 2017 0183 32 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 ,...

Slag cement does not contain carbon and does not cause instability in the entrained air content Time of Set Time of initial set is influenced by the use of slag cement and fly ash 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 ....

making slag to concrete composite and measuring the effect of slag content on the mechanical behavior of hardened concrete The steel making slag was used in three main phases a as a replacement of sand, b as a replacement of fine aggregate and c as a replacement of course aggregate The percentages of replacement in the...

Effect Of Granulated Slag As Sand Replacement In Concrete effect of granulated slag as sand replacement in concrete use of blast furnace slag sand in concrete as a partial replacement for sand effect of slag on pumpability concrete manufacturer The use of slag cement slag Chat Online Strength and Durability of a 70 Ground Get Price...

Brenno designed a mix with 413 pounds of GGBF slag or a 70 replacement of cement weight based on a MnDOT mix with the next lower minimum anticipated 28-day strength, 3900 psi The new mix also used 177 pounds of Type II cement, 3 air entrainment, and a low-range water-reducer for pumpability The pier stem was poured in 5-foot lifts...

Effects of fly ash and ground granulated blast-furnace slag GGBFS on workability, strength, volume stability and durability of HSC are investigated Results show that fly ash and GGBFS can improve the workability, increase the later strength of high strength concrete HSC remarkably, and reduce the brittleness In addition, the ameliorative effect of GGBFS on HSC brittleness is more remarkable...

They include Portland cement as covered by AASHTO M85 2 , Portland blast furnace slag cement blended cement type IS , and slag cement slag cement type S as per AASHTO M240 3 The use of GGBFS as a partial Portland cement replacement takes advantage of the energy invested in the slag making process and its corresponding benefits with ....

Properties And Effects Of Copper Slag In Concrete 46 PROPERTIES AND EFFECTS OF COPPER SLAG IN CONCRETE M V PATIL Applied Mechanics Department, SV National Institute of Technology, Surat, Gujarat Abstract Copper slag is a by-product obtained during matte smelting and refining of copper This work reports an...

Effect of Blast-furnace Slag as Cement Replacement on Hydration, Microstructure, Strength and Durability of Concrete 2011 n pag Print phdthesis 1196122, abstract = Sustainability is getting more and more attention during the last years...

flexural properties of concrete containing steel slag are compared with that of concrete containing river sand and also 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...

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...

Literature The Concrete Society, Cementitious Materials The effect of ggbs, fly ash, silica fume and limestone fines on the properties of concrete Cementitious materials Referenc US Federal Highway Administration Ground Granulated Blast-Furnace Slag Archived from the original on 2007-01-22 Civil and Marine Company...

Slag cement is often referred to as ground granulated blast-furnace slag GGBFS As requested 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 ,...

effect of slag on pumpability concrete, superplasticizers, setting time , , does affect the resulting concrete , The ultra-fine slag , concrete positively affects its strength More MF 182-6 Properties and Uses of Iron and Steel Slag...

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, Virginia 22161 19 Security Classification of this report 20...

were only slightly higher than that of the air cured sampl 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...

Figure 1 This chart shows the effects of increasing doses of GGBF slag on concrete compressive strengths Concretes made with slags meeting ASTM C 989 Grade 120 requirements achieve higher compressive strengths after seven days than plain portland cement concrete The greatest 28-day strengths can be achieved with blends of 35 to 65...

Although the data are limited, the restrained shrinkage cracking of concrete containing slag appears to be less than that of concrete without slag Cracking was delayed to later ages and resulted in smaller total crack widths The effect of the inclusion of slag on ,...

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...

The American Concrete Institute Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ....

Mar 01, 2017 0183 32 This research studied and examined the effect of substitution of 5 wt , 10 wt , and 15 wt of slag with silica fume in AAS concrete mixture and two method of curing, including water curing and curing under plastic covers, on the permeability of alkali activated slag concrete Tests conducted to evaluate the permeability of AAS concrete samples ....

supplementary cement replacement materials in concrete The combined effect of copper slag and fly ash as a partial replacement of cement on flexural strength of concrete has been , ash also improves the pumpability of concrete by decreasing the friction between the concrete and the pump line Fly ash, as all pozzolanic materials do ....

Research on Ultrahigh Pumpability of C80 HS HP Concrete , In this study, the feasibility of making cement clinker with this kind of demolished concrete was studied The concrete aggregates composed of steel slag, blast furnace slag, coal gangue and fly ash were prepared , The results achieve favorable effect and provide reference for ....

Absorption of air-cooled blast-furnace slag kept in water was 2 to 9 times that of natural gravel, while that under pressure of 20 MPa was 12 to 4 times that kept in water Absorption characteristics of air-cooled blast-furnace slag under pressure varied depending on its porosity and pore size distribution...

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 ....

What are the effects of plasticizers on the pumpability of concrete? , symmetry broken in all case just because of change of sign of their staggered magnetization due to time reversal effect or ....