Can slag cement be used 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.

Why is slag added to concrete?

The advantage of slag is its ability to substitute more of cement. Giving savings of up to 9% in cement cost with a 50% slag to cement content ratio. With the combination of both cost savings and strength increase, SCMs such as fly ash and slag should always be considered for certain applications.

Does slag make concrete stronger?

Concrete made with recycled steel slag is 17 percent stronger than traditional concrete. Disposing of slag is a millennia-old problem, but the “waste material” is highly sought in construction. Recycled slag performed 8 percent better in concrete than “raw” slag.

Is Portland slag cement good for concrete?

PSC has been voted as the most suitable cement for concrete pavements, mass concrete applications, high performance or high strength concrete, structures and foundations, pre-cast concrete such as pipe & block, concrete exposed to sea water and marine application.

Which is better slag or fly ash?

1: Slag cement has a more consistent chemical and physical structure than fly ash from source to source and from a single source. What does that mean for your concrete? Because of the more consistent structure of slag cement, it produces cement paste and concrete with more consistent performance results.

What is the purpose of slag?

Slag’s purpose is two-fold. It protects the weld from oxidation and contamination from the atmosphere. It also helps keep the molten weld pool in the joint as it cools, which is especially important for out-of-position welding.

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.

What is the difference between portland cement and slag cement?

When used as part of a portland cement concrete, slag reacts with both the water (latent hydraulic reaction) and the hydrated cement paste (pozzolanic reaction), resulting in a more refined microstructure than that of a plain portland cement.

What is the difference between slag and cement?

IS : 4031 METHODS OF PHYSICAL TESTS FOR HYDRAULIC CEMENT

  • IS : 269 ORDINARY PORTLAND CEMENT,33 GRADE — SPECIFICATION
  • IS : 8112 ORDINARY PORTLAND CEMENT,43 GRADE — SPECIFICATION
  • IS : 12269 SPECIFICATION FOR 53 GRADE ORDINA’RY PORTLAND CEMENT
  • IS : 8041 RAPID HARDENING PORTLAND CEMENT – SPECIFIC4TION
  • IS : 455 PORTLAND SLAG CEMENT- SPECIFICATION

    • Why use fly ash and slag in concrete?

    Workability,concrete is easier to place with less effort.

  • Ease of pumping,pumping requires less energy and longer pumping distances are possible.
  • Improved finishing,concrete is creamier with clear sharp architectural patterns easier to achieve.
  • Reduced bleeding,fewer bleed channels decrease permeability and chemical attack.

    • What are the uses of slag cement?

    Used in ready mix concrete plants.

  • Used for structures meant for water retaining such as retaining wall,rivers,ports,tunnels for improvement in impermeability.
  • Used in mass concreting works such as dams,foundations which require low heat of hydration.

    • What are the requirements of a good slag?

    – Puzzolan, or ordinary slag cement, usually simply called slag cement. – Slag Portland cement, which may be a true Portland cement. – Iron cement or Eisen cement, which is a mixture of slag and ordinary Portland cement. – Several special varieties of cement.

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