What is an Ordinary Portland Cement?
Ordinary Portland Cement (OPC) when appropriately batched and mixed with aggregate and water, is capable of producing mortar or concrete of high workability for a sufficient time. After a defined period, this cement attains a specified level of strength and long term volume stability.
What is a Blended Cement?
Blended Cement is a uniform blend of OPC and fine pozzolanic material or slag. It is produced either by inter grinding Portland cement clinker, pozzolanic material or slag and gypsum or by blending OPC and fine pozzolanic material or ground granulated blast furnace slag.
What is the difference between the Ordinary Portland Cement and Blended Cement?
Blended Cements produce les heat of hydration and offer greater resistance to the effect of aggressive environment than Portland Cement. Ordinary Portland Cement mainly constitutes of Clinker 95-100%, while in Blended Cement Pozzolanic consists of 65-79% Clinker, and 21-35% Natural Pozzolana.
How do you control the strength of concrete?
The strength of concrete is dependent on the quantity of cement. The ratio of water to cement in the cement mix affects the strength of the concrete. The higher the ratio the weaker the concrete and vice versa.
What is the difference between cement and concrete?
Concrete is a heterogenous mixture of cement, sand, crushed stone and water combined in large quantities. While the sand and stone aggregates remain inert, the other constituents like cement and water undergo chemical changes. So that the nature of aggregate selected varies with the application of the concrete.
Cement meanwhile, acts as a binding agent keeping together all the elements of concrete. A mix of limestone and clay in small batches, combining mixtures of calcium silicate, calcium aluminate and calcium aluminoferrite to determine the drying time and the color of the cement.
What are the Green Certifications received for INSEE Cement products?
INSEE Sanstha is Sri Lanka’s first cement product to be awarded the green labeling certification by the Green Building Council, and is produced with 7KG less CO2 emissions per bag. INSEE Extra, INSEE Mahaweli Marine Plus and INSEE Rapid Flow Plus received prestigious Gold Awards at the CIOB Green Mark certification awarded by the Ceylon Institute of Builders, Sri Lanka.
These Green certifications were awarded based on five key areas such as, the energy efficiency, water efficiency, resource efficiency, health and pollution control and other requirements such as environment quality management systems and technical performance or innovation of the products, that endorsed an identity for INSEE of being a truly responsible corporate brand.
What is INSEE Ecocycle?
INSEE Ecocycle the waste management arm of INSEE Cement, does waste to energy conversion, through a world-recognized and proven technology named “Co-processing”, where INSEE Ecocycle disposes hazardous wastes without leaving any environmental liability. The technology is approved and endorsed by international institutions such as, WHO, GIZ, the Basel convention, and the Stockholm convention as well as local government agencies, such as CEA, Provincial Environmental Authority of the North Western Province, and Ministry of Environment & Mahaweli Development.
INSEE Ecocycle ensures 100% product security, especially for branded products. Both the pre-processing facility in Katunayake and the co-processing platform at Puttalam are fully equipped with required security measures.
INSEE Ecocycle has established a dedicated analytical laboratory which provides accurate analytical test reports on waste and waste derived materials. Certain analytical testing are accredited for ISO 17025, which is also registered with CEA.
INSEE Ecocycle has co-processed more than 600,000 MT of industrial waste by partnering with over 350 corporates including government institutions in Sri Lanka.
Why is Occupational Health and Safety (OHS) a Critical Success Factor for INSEE?
INSEE places the highest value on ensuring the health and safety of our employees, subcontractors, third parties, and visitors. Yet comparison of our performance with best-of-class companies in similar industries such as mining and heavy manufacturing shows that we have not performed as well in OH&S as they have. We are committed to significant improvements.
We continue our safety initiatives, to develop a safe working culture, by changing behaviors and attitudes, using INSEE OH&S management system. Furthermore, we have carefully analysed the causes of all accidents and have identified the 14 major causes, and are developing directives on fatality prevention to address these causes. Five cardinal rules with regard to safety have been laid down and there is zero tolerance for breaches and a stringent reporting line. Tight performance management via Key Performance Indicators and strict operational discipline will enable INSEE to move toward its goal of ‘zero harm’.
To that end, and to reinforce the message that company leaders must drive continuous improvement, we have set a new OH&S target: to reduce lost time injury frequency rate by atleast 30% per year, until a rate of less than two is achieved. This new target implies that even good performers in the Group must further improve. INSEE makes no compromise regarding safety. Our people are the basis of our success and our most valuable asset – we must protect them.
How has sustainable construction become a priority for INSEE?
We sell cement that others use to build structures that may last for decades, even centuries. Studies have shown that more than 90% of the lifetime environmental impacts of concrete occur during the use of the product. Yet, in most cases, we have little influence over construction methods and processes.
We therefore promote the use of sustainable, eco-efficient products to our customers, such as composite cements containing mineral components – cement constituents that are not derived from clinker production. They include blast furnace slag from steel manufacture, fly ash from coal-fired power generation, and natural pozzolan and limestone. Around 75% of cement types produced by INSEE contain significant amounts of these materials.
We have also established numerous community engagement projects like the MOU between the Vocational Education (EVE) training centre and the National Apprentice and Industrial Training Authority (NAITA) to empower youth in Puttalam with technical skills. Hereby promoting more sustainable choices in construction and to contemplate the role of the cement industry in a more sustainable global future. INSEE hopes to be seen as an opportunity to contribute to sustainable progress beyond the boundaries of our business, and even our industry.
What are the Sustainable Development priorities for INSEE?
INSEE hopes to employ their Innovation and Application (I&A) Centre to collaborates with all stakeholders including architects, engineers, contractors and researchers, introducing green concepts, sustainable concrete solutions, products and technologies. Hereby the I&A Center identifies better ways to build superior, high performance and sustainable living structures and infrastructure in Sri Lanka, realizing the country's vision of transforming into a sustainable ecosystem.
INSEE also hopes to be a pioneer of sustainable construction. The Haritha Sihinaya 2017 was a platform launched for this purpose whereby INSEE strives to minimize environmental damage through optimization of process and project, while also disseminating knowledge and information to a wider audience. The underlying purpose behind these efforts being to promote their brand to a progressive demographic.