Is slag cement good for concrete?

Slag cement is most widely used in concrete, either as a separate cementitious component or as part of a blended cement. It works synergistically with portland cement to increase strength, reduce permeability, improve resistance to chemical attack and inhibit rebar corrosion.

What is slag cement disadvantages?

Disadvantages of Blast-Furnace Slag Cement

Early Strength is low; therefore, it cannot be used in Reinforced Cement Concrete (RCC) works. As the initial setting time is high, this cement is not used for emergency or repair works.

Does slag make concrete stronger?

Concrete made with slag cement provides higher compressive and flexural strengths compared with portland cement concrete. SCIC #14, Compressive and Flexural Strength, examines the factors that effect concrete strength, and explains how slag cement improves both compressive and flexural strength of concrete.

Can you use slag in concrete?

Slag cement, or ground granulated blast furnace slag (GGBFS), has been incorporated into concrete projects in the U.S. for over a century to improve durability and reduce life cycle costs.

What are the advantages of slag cement?

Portland Slag Cement | PSC Application | Advantage | Manufacturing Process | Use of GGBS

Is slag cement cheaper than portland cement?

Fly ash and Slag will typically be 18% cheaper than Portland cement.

What is the difference between portland cement and slag cement?

The content of clinker in slag cement is less than that in Portland cement but the content of granular blast furnace slag is more. Slag cement has the following characteristics compared with Portland cement (see Table 4.6).

What is slag used for?

Granulated blast furnace slag has been used as a raw material for cement production and as an aggregate and insulating material. and granulated slag have also been used as sand blasting shot materials.

What is ground slag used for?

Applications. GGBS is used to make durable concrete structures in combination with ordinary Portland cement and/or other pozzolanic materials.

Is slag a waste?

Slag is a waste product of metallurgical processes. Molten material contains ore impurities, deoxidizers, metal oxides or carbonaceous residues. It is a mass of glassy ash. Depending on how the slag is formed, it has different uses and properties.

Is used for portland slag cement?

JSW - JSW Portland Slag Cement (PSC) Portland Slag Cement, commonly known as PSC, is blended cement. Slag is, essentially, a non-metallic product comprising of more than 90% glass with silicates and alumino-silicates of lime.

Is code slag a cement?

25232940 - Other: Portland slag cement HS Code and Indian Harmonised System Code.

Is slag cement good for plastering?

Best cement for plastering:- Best cement for plastering used in construction is OPC- 43 (Ordinary Portland cement grade 53) and PSC (Portland slag cement) brand of UltraTech Cement, ACC gold water shield, ACC Suraksha power, Ambuja Cement, Sagar cement, Dalmia Cement, Shri cement, Birla cement, etc.

Which cement is best for RCC?

OPC 53 Grade cement is recommended in all RCC structures like footing, column, beam and slabs, where ever initial and ultimate strength is the major structural requirement.

Why is cement called portland cement?

The inventor Joseph Aspdin, of England, patented the basic process in 1824, naming it for the resemblance of the cement when set to portland stone, a limestone from the Isle of Portland.

Is steel slag toxic?

When SSRS compares with ground granulated blast furnace slag (GGBFS) from iron making, steel slag contains toxic ingredients such as nickel, cadmium, chromium and strontium. These compounds could be harmful not only for environment but also for human health [9,10].

What is concrete GGBFS?

GGBS (Ground Granulated Blast-furnace Slag) is a cementitious material whose main use is in concrete and is a by-product from the blast-furnaces used to make iron.

What is the chemical composition of slag?

The primary components of iron and steel slag are limestone (CaO) and silica (SiO₂). Other components of blast furnace slag include alumina (Alsub>2O₃) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).

Is slag good for a driveway?

Steel slag is not just good for driveways, it is also used by homeowners as a landscaping stone in back yards around a pool area or patio. Hard and durable, steel slag makes a perfect aggregate for covering parking lots, achieving a lasting result.

What are the different types of slag?

There are three types of slag: ferrous, ferroalloy, non-ferrous slags, which are produced through different smelting processes.

What is slag worth?

How Much Is Slag Glass Worth? Slag glass antique items can run anywhere in value from a low of $50 to a high of $1,500. Typically slag glass antiques will be vases, dishes, bowls and decorative figurines and picture frames.

Which cement is best slag or PPC?

PPC has a lower heat of hydration and it is prone to fewer cracks compared to OPC. PPC has lower strength than OPC but PPC provides better workability and finishing than OPC. PPC provides greater resistance to chemicals.

Which cement is better OPC or PSC?

PSC has the following advantages over OPC. Due to presence of slag, PSC is usually lighter in colour than OPC. The words Portland Slag Cement is written on all PSC cement bags. Further, due to its improved properties, PSC is generally priced higher than OPC in the market.

Why is portland cement so expensive?

As more areas become industrialized—and as there grows a greater need for durable building materials to withstand severe weather and long-term wear—the demand for concrete has significantly increased. This alone has affected the price of concrete over the years.

What does fly ash do in concrete?

Introduction. The use of fly ash in portland cement concrete (PCC) has many benefits and improves concrete performance in both the fresh and hardened state. Fly ash use in concrete improves the workability of plastic concrete, and the strength and durability of hardened concrete. Fly ash use is also cost effective.