Portland Slag Cement (PSC)
- Improved workability: The right designed concrete mixtures containing slag cement demonstrate improved workability and finishability when compared with 100% ordinary Portland cement concrete system due to its high fineness, as a result we can get segregation free and cohesive Mix.
- Reduced heat of hydration: Due to reduced heat of hydration, plastic shrinkage cracks can be minimised.
- High compressive and flexural strength: Concrete made with Slag Cement provides higher compressive and flexural strength compared with Ordinary Portland cement concrete due to additional calcium silicate hydrate(C-S-H) formation. Silicates in slag cement combine with the calcium hydroxide (CH), a byproduct of hydration and form C-S-H which enhances the both compressive and flexural strength.
- Reduced permeability: The inter connectivity of capillary pores will be discontinued and thus permeably will be reduced.
- Resistance to alkali- silica reaction (ASR): A chemical reaction between the alkalis in Portland cement and certain types of minerals present in aggregate. Use of Slag cement will reduce the potential of ASR occurring by reducing the amount of alkali available in the system that is available for reaction with the aggregate.
- Excellent resistance to sulphate attack: Sulphate attack occurs when concrete comes in contact with water or soil containing sulphates. These sulphates react with hydration products of the tri-calcium aluminate phase of Portland cement and with calcium hydroxide to form an expansive crystalline product called ettringite. Expansion due to ettringite formation causes tensile stress in concrete which leads the concrete begins to crack. Slag does not contain C3A, so its addition in concrete dilutes the total amount of C3A and also reduces the permeability due to which the sulphates do not penetrate in to concrete.
- Resistance to chloride attack: Due to reduced permeability and increased densification the diffusion of chloride ions will be greatly minimised in the concrete contains Slag cement.
- Lighter in colour: An Aesthetic appearance and low heat absorption due to its light colour.
- Reduced life cycle cost: Concrete produced by using slag cement can significantly improve the durability and extends the life of the structure and thus reduce the lifecycle cost of the structure.
- Fire resistance: Structures made with Slag cement resist the high temperature than the structures made with Ordinary Portland cement.
- Resistance to erosion: Concrete made with Slag cement demonstrated the resistance to erosion compared with Ordinary Portland slag cement. The Engineering Consultants and Designers from all over the world are recommending Slag Cement due to its superior engineering properties.
- All Residential, commercial, Industrial Buildings,
- Marine and Irrigation structures, Airports
- Rigid pavements, Pre cast elements, Bridges,
- Pre stressed concrete, Pavement blocks,
- Masonry bricks, Sewage pipe line works,
- Effluent treatment plants etc.
Slag cement is a proven product world wide the following countries are extensively did the research on Slag cement and utilized in their infrastructural projects. Australia, Belgium, China, Canada, Denmark, France, Great Britain & Ireland, Germany, Japan, UK, Sweden, US, Netherlands, Malaysia, South Africa, India etc.
- Milwaukee’s Kilbourn tower(34 story skyscraper), Milwaukee, Wisconsin,
- Slag cement pavements beat ASR in Delaware,US
- 75-Four-Mile Test Section in Michigan,
- The Helena, Manhattan, New York,
- Air TrainJKF Project,
- Charenton canal Bridge in Louisiana,
- The Luas Taney Bridge comprises a 108.5m long cable-stayed bridge linking the LUAS line between Dublin city centre and Sandyford in South County Dublin
- King Fahad Causeway (Saudi Arabia-BahrainCauseway)
- Eastern Scheldt Barrier , built with blast furnace slag cement with a design service life of 200 years
- EURO Tunnel
- 3 Gorges Dam- China
- Thermal Powder Project , Chennai, India
- Library Building parliament of India
- Worli-Bandra sewage outlet pipeline, Mumbai, India
- Bandra Worli sea link, Mumbai, India
- LNG Petronet- Dahej, Gujarat, India and Many More
Conclusion: Use of Portland Slag Cement provides the following technical, commercial and environmental benefits along with sustainability.
- Reduction in CO2 emission, conservation of natural resources, to make durable structures.
- Reduced life cycle cost, enhanced engineering properties, cost economy, low energy consumption etc.
Cargo Handling Infrastructure
It recently replaced the existing Mobile Harbor Cranes with higher capacity cranes as the existing cranes had already completed more than 23,000 hours of operations. The new cranes have better efficiencies and can discharge 40,000 TPD coal.
The Company is also in discussion with Mormugao Port Trust for the installation of in-motion wagon loading systems with ancillary facilities like Conveyers and Silos.
It is planning to increase the capacity of the conveyor system by 20 percent.
Plans to invest in additional mechanical equipment for handling heavier steel coils are also underway.
Connectivity at the Port is likely to improve soon, with the Government of Goa planning and contemplating to double the Vasco-Londa line.
South West Port is conveniently located as it is connected to two National Highways — NH 17 and NH 4A; NH4A connects to the Mumbai-Bengaluru NH 14.
The Government of Goa is considering upgrading the Vasco-Londa state highway.
South West Port also has the unique advantage of a railway connection right at its terminals, with the Southwest Railway rail head entering the harbour to touch the terminal. This makes transportation of goods by rail easy.South West Port is the closest harbour to the industrial belt of northern and central Karnataka, particularly the steel industry cluster of Bellary, Hospet, which houses many steel and cement plants.
The nearest airport is the Goa International Airport, which is 8.4 kms from Mormugao Harbour.
The Zuari and Mandovi rivers provide inland waterway transport facilities, connecting the Mormugao Harbour — and the South West Port — with mines and manufacturing plants in the hinterland.
• Berth 1 for coal handling using 2x2000 TPH ship grab uploaders including covered back-up conveying systems.
• Berth 2 for other bulk, break-bulk cargo using 2 mobile harbor cranes 2x1200 TPH.
• Berth 6A (343 meters) was recently commissioned and will initially berth mini bulk carriers 3x8000 DWT simultaneously for transshipment and can also accommodate Handymax vessels.
• A container yard to accommodate 1500 TEU (twenty foot equivalent unit) with 72 reefer plugins.
• Back-up conveying, storage and dispatch system.
• 40000 kL tank farm to handle molasses and edible oil.
• 105x450 meter covered coal storage that can accommodate around 300,000 metric tons of cargo.
• Adequate covered warehouses that can store
more than 120,000 metric tons of fertilizers and agro commodities at any given point of time.