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 …
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.
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.
The color you describe is caused by complex reactions between sulfide sulfur compounds in the slag cement and portland cement compounds. It usually doesn't occur, but when it does, exposure to air and sunlight will eventually promote oxidation reactions and eliminate the greening. Greening is prolonged (but eventually disappears) if the …
Slag used for this study was reduced to the particle size passing through ASTM standard sieve #100. Concrete specimens containing 10% and 20% replacement of cement by slag were prepared.
The Slag Cement Association has published 30 information sheets in the Slag Cement in Concrete series. These are listed below in numeric order. Click on any of the sheets for …
Slag Cement. A centuries-old material evolves to meet the demands of modern construction. Slag cement, a byproduct of steel-making, enhances the traditional concrete benefits of strength and durability while offering reductions in waste, energy use and greenhouse gas emissions. Slag cement is used in concrete for virtually any …
The setting time of concrete containing slag cement is commonly retarded. The extent of the delay is influenced by several factors such as the curing temperature, slag cement …
Aluminate phases in some supplementary cementitious materials (SCM), such as in some Class C fly ash10, or higher alumina content in slag cement11, can contribute to sulfate attack. Permeability of concrete – Water-soluble sulfates penetrate concrete by a combination of capillary sorption and diffusion. Concrete mixtures with a low w/cm and ...
WI DOT—50% slag- cement concrete pavements tend to be whiter than other concrete pavements. In the figure at right, an adjacent pavement is visible in the distance, for comparison.
The guide covers information on slag cement chemical properties and product types, storage, handling, batching, proportioning, and the effects on properties of fresh and …
2001 by slag cement manufacturers and the Slag Cement Association, the American Concrete Institute officially reviewed and changed the terminology from GGBFS to slag …
This same study purports that the ideal ratio of slag cement is between 25% to 50% given its effect on flowability and strength, finding that in high performance concrete, slag is actually ...
This study investigates the impact of utilizing steel slag (SS) as a partial substitute for cement in high strength concrete (HSC) under high temperat…
This document discusses commonly used cementitious materials for concrete and describes the basic use of these materials. It is targeted at those in the concrete industry not involved in deter-mining the specific mixture proportions of concrete or in measuring the properties of the concrete.
In this study, the effect of curing temperature on the properties of slag cement concrete after high-temperature exposure was studied, and elevated curing temperature (45 ± 2 °C and 95% relative …
This paper explores what place slag, or granulated blast furnace slag has in our changing environment and evaluates how it compares to Portland cement. The purpose of this research is to discern how slag will be applicable in the future of construction and find what place it will have in concrete mixes. Slag is a Supplementary Cementitious Material …
Reading time: 3 minutes. Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to …
Can be used in conjunction with various cement and pozzolan types to achieve required strength. Effective in reducing permeability and increasing durability of concrete Reduces environmental impact of concrete mixtures. Thank You! Slag Cement Association. 38800 Country Club Drive.
All concrete should be mixed thoroughly until it is uniform in appearance and all ingredients are evenly distributed. The same factors afect the set time of concretes made with slag cement as with ordinary portland cement. Generally, the higher the slag cement …
The effect of SAP in concrete depends on the type of Superabsorbent polymer, its particle size, characterization. The speed of swelling of SAP particle is also greatly influenced by the particle size [1]. The specifications of Sodium Polyacrylate are mentioned in the Table 1. Super absorbent polymer used for this research is dry, …
Portland Slag Cement (PSC) is a versatile cement type that offers numerous advantages in construction projects. It provides strength, durability, workability, and cost-effectiveness. PSC finds applications in various sectors, including mass concrete, marine construction, and precast concrete products. While it has some disadvantages such as ...
The tests also included the evaluation of SC setting time and slag activity index. Test results showed that the used slag cement had a high activity index and prolonged initial setting time. SCM demonstrated positive synergistic effects on late compressive strength, enhanced durability against sulfates and acid attacks.
A single ton of ordinary Portland cement (OPC) demands around 4.0 G Joule energy and creates about a ton of CO 2 emission. As part of our effort to preserve the environment, the incorporation of ground granulated blast-furnace slag (GGBFS) or fully replaced by alkali-activated slag (AAS) as an alternative binder to OPC. This concrete is …
The SCA is proud to promote the use of slag cement to ready mix producers and industry professionals who understand the durable and sustainable benefits of slag cement in producing high quality concrete. Professionals agree, where other cementitious materials fail to produce consistent results, slag cement produces a more workable concrete with ...
Therefore, enhancing the utilization ratio of steel slag has become an urgent priority. To address this issue, this paper examines the effect of incorporating steel slag as a …
At high temperatures, slag concrete has shorter setting times than Type I cement concrete. Relationships are presented for setting time as a function of penetration resistance, temperature, and ...
Finally, the extension of slag concrete curing time is based on number of factors including ambient temperature, amount and types of cement, the temperature of utilized cement, and percentage of cement replacement.
Currently, ground granulated blast-furnace slag cements use in cement-based materials is being increasing because perform well in marine and other aggressive environments. However, mortars and concretes made of this type of cement exhibit high carbonation rates, particularly in badly cured cement-based materials and when high …
The "greening effect" refers to hardened concrete containing Granulated Blast-Furnace Slag (GBFS) that displays a vivid blue-green color after removal of formwork. This temporary coloration effect, which fades within a few days to weeks, has raised concerns about its potential impact on the environment.
Carbonation of cement-based materials is a chemical process influenced by the cement type. Based on the experimental results, a number of conclusions can be drawn: •. Carbonation rate increases with increasing ground granulated blast-furnace slag content in mortars and with decreasing wet curing time.
Despite many vast improvements in cost, workability, and environment impact of concrete, fly ash needed a longer setting time compared to portland cement (Bouzoubaa and Foo, 2005).
Slag cement will slow the set time of concrete to a greater degree than straight portland cement mixtures. The amount of slag cement used as a replacement for portland …
This report addresses the use of slag cement as a separate cementi-tious material added along with portland cement in the production of concrete. This report does not address …
Slag Cement University is a central source of educational resources on slag cement use in concrete construction for university professors and students. Professors can easily incorporate the content of Slag Cement University into existing construction management course material.
