What is the difference between OPC and slag cement?
What is the difference between OPC and slag cement?
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.
Where is Portland slag cement used?
Where PSC can be used?
- All types of residential, commercial and industrial projects.
- Dams and other mass concrete works.
- Water retaining structures.
- Concrete roads and flyovers.
- Most suitable for marine constructions.
- Pre-cast concrete products.
- Foundations and piles construction.
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.
What is difference between slag and PPC cement?
The Portland Pozzolana Cement (PPC) is a kind of blended cement which is produced by either inter grinding of OPC clinker along with gypsum and pozzolanic materials in certain proportions. PSC is a blended cement. Slag is a product that is non-metallic and is 90% glass.
What does slag do to concrete?
It typically replaces part of the portland cement in concrete mixes. According to the Slag Cement Association, an industry trade group, incorporating slag cement as a supplement in concrete offers higher strength, reduced permeability and improved resistance to chemical attack.
Can we use PSC cement for slab?
Both OPC and PPC cements are good for construction of concrete slab.
Why Portland slag cement is used?
Portland slag cement is nowadays commonly used in general civil engineering construction works and is mainly preferred for construction of main structures and in coastal areas where excessive amount of chloride and sulphate are present. It is most useful in massive construction projects such as dams.
Why is slag good for concrete?
The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. – Granulated blast-furnace slag (GBFS)—The glassy granular material formed when molten blast-furnace slag is rapidly chilled, as by immersion in water. …
Why is slag used in cement?
The benefits of using slag cement include: Improved workability. Easier placeability and finishabiltiy. Higher long-term compressive and flexural strengths. Reduced permeability.
Which is better PSC or OPC?
OPC takes lesser time to set than PPC. If you are construction near seashore areas, PSC must be chosen over PPC and OPC because of its excellent corrosion resistance properties.
Is slag good for driveways?
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.
Which type of cement is best for slab?
Both OPC and PPC cements are good for construction of concrete slab. OPC is the most commonly used cement in industrial and large construction, PPC is most commonly used for small residential constructions. PPC is used where possibilities of sulphate attack is higher as it has good sulphate resistance compared to OPC.
What is the difference between slag cement and OPC cement?
Slag materials namely fly ash, volcanic ash, are added to the Ordinary Portland Cement (OPC) so that it becomes Portland Slag Cement. Both are eco-friendly materials but Slag Cement uses natural and industrial waste thus reducing the environmental pollution. Slag Cement is cheaper than OPC cement.
What is Portland slag cement (PSC)?
Portland slag cement (PSC) is also known as blast furnace cement. It is manufactured by grinding Portland cement clinker, gypsum and round granulated blast furnace slag. It is generally constituted of 40-45% Portland cement, 40-45% slag and 3-5% gypsum. Slag is a by-product of the manufacture process of pig iron.
What is the use of slag in concrete?
The use of slag in concrete has replaced partially the Ordinary Portland Cement (OPC) called the Portland Slag Cement (PSC) nowadays when demand for green cement is rising with a view to environment friendliness.
What is the composition of PSC cement?
PSC or Portland Slag cement is a kind of blended cement manufactured by either grinding the Portland clinker with gypsum and granulated slag or blending the ground granulated blast furnace slag (GGBS) with Ordinary Portland cement. Normal composition of Portland slag cement is 40 % clinker, 5 % gypsum and 60 % blast furnace granulated slag.
