Dry Granulation of Blast Furnace Slag
So, not only the sensible heat of the liquid slag is lost, but it is also necessary to have an upstream slag drying unit for using the granulated BF slag in cement industry. Drying process normally consumes heat energy up to 72Mcal/ton of slag. Dry granulation of liquid BF slag is being developed in many countries along with heat recovery process.
Effect of Slag Cement on Drying Shrinkage of Concrete
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.
Production & Placement - Slag Cement Association
SCIC #5, Producing and Placing Slag Cement Concrete, provides an overview of methods for handling slag cement concrete. Slag cement is stored, batched and transported in a similar manner to that of portland cement. When placing, finishing and curing slag cement concrete, careful planning will result in a successful finished product.
How to Make Cement From Blast-Furnace Slag
The most important method of regulation used with the low-percentage Al2O3 slag cements in the U.S.A. is the Whiting process. This process includes the use of caustic soda, caustic potash, sodium chloride, &c., added either as aqueous solution or in a dry state at some stage of the process of cement …
Properties of Hardened Concrete with Blast Furnace Slag
Drying shrinkage of concrete containing slag. As per the research carried out by Hogan and Meusel, drying shrinkage of slag concrete is larger than drying shrinkage of concrete without slag. Due to low specific gravity of slag that increases volume of concrete paste when slag replaces part of cement on weight basis. Microstructure of GGBS Concrete
The Effect of Ground Granulated Blast Furnace Slag (Slag ...
Oct 01, 2009 · Keywords: drying shrinkage; review; slag cement. Date: 10/1/2009. Abstract: This report details the results of a critical review of the literature on the effect of ground, granulated, blast-furnace slag (slag cement) and slag-blended cements on the drying shrinkage of concrete. Drying shrinkage values from the literature were collected, and ...
(PDF) Effect of Slag Cement on Drying Shrinkage of Concrete
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 ...
Slag Cement Association > About Slag Cement > IS-01
Slag cement, or ground granulated blast-furnace slag (GGBFS), has been used in concrete projects in the United States for over a century. Earlier usage of slag cement in Europe and elsewhere demonstrates that long-term performance is enhanced in many ways.
Blast Furnance Slag - User Guideline - Portland Cement ...
Moisture in blast furnace slag, which occurs in the granulation process or in pelletized slag, should be removed by drying prior to the use of GGBFS as either an additive to Portland cement or a mineral admixture to Portland cement concrete.
(PDF) Short-term experimental data of drying shrinkage of ...
Short-term experimental data of drying shrinkage of ground granulated blast-furnace slag cement concrete
Workability and mechanical properties of alkali activated ...
The dry powdered sodium silicate activator was preblended with the slag in the dry form prior to use for concrete manufacture. The liquid sodium silicate was treated with addition of NaOH to achieve identical stone composition to the dry powdered sodium silicate activator.
Ground granulated blast-furnace slag - Wikipedia
Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.
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 is ...
Slag Dryer - Sunco Machinery
Slag dryer also named slag drying machine. Raw Slag dryer is ideal drying machine for the big moisture and high density materials such as blast furnace slag, limestone, clay, sand, etc. The dried slag can be used into cement industry.
Cement - Wikipedia
Cement is seldom used on its own, but rather to bind sand and gravel together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Cement is the most widely used material in existence and is only behind water as the planets most-consumed resource.
Application of calcium carbide slag in dry cement ...
Cement industry is the best way for calcium carbide residue to be harmless, large dosage, no residue and resource treatment, and calcium carbide residue production cement is the best way for calcium carbide residue cleaning treatment.Because the decomposition heat of calcium carbide slag is much lower than that of limestone, the coal ...
Title No. 112-M28 Effect of Slag Cement on Drying ...
slag cement slightly increased early-age shrinkage (through 30 days), although the ultimate shrinkage (through 1 year) was little affected. Hooton et al. (2009) summarized free shrinkage data for concrete containing slag cement from 21 studies and concluded that the drying shrinkage of concrete containing slag cement, independent of the slag
Autogenous and drying shrinkage of alkali‐activated slag ...
LSS and SH activated slag mortars were found to be more brittle than SC activated slag and PC mortars.Slag mortar made with LSS had a high drying shrinkage, up to six times that of PC mortar.