INSEE SANSTHA PORTLAND COMPOSITE CEMENT is the result of years of research and development, engineered with INSEE’s trademarked newly introduced SmartActTM Complex Organo-Mineral Technology. It is a unique superior blended cement with up to 35% clinker replaced with a composition of more than one cementitious mineral addition under the newly established
Sri Lanka Standard SLS 1697:2021 Specification for Portland-Composite Cement (PCC). INSEE SANSTHA PORTLAND COMPOSITE CEMENT is produced as two variants; a ternary composition
Combining of either fly ash or slag with high-grade calcium carbonate.
Producing compressive strength equivalent to that of OPC among other characteristics, INSEE SANSTHA PORTLAND COMPOSITE CEMENT comes strongly recommended for projects that require strength development at all ages. The dense microstructure and low porosity of INSEE SANSTHA PORTLAND COMPOSITE CEMENT guarantees high resistance suitable for all concrete exposure conditions across Sri Lanka, especially coastal regions. Its low heat of hydration is ideal for mass concreting, piling and foundations, while its resistance to alkali aggregate reaction (AAR) is well suited for strategic infrastructure such as dams, bridges and power plants. Optimum particle size distribution and high packing density of INSEE SANSTHA PORTLAND COMPOSITE CEMENT ensures the consumption of less mixing water, while its reduced clinker percentage results in the reduction of the carbon footprint of the cement product, making INSEE SANSTHA PORTLAND COMPOSITE CEMENT more environmentally friendly than OPC.
| Name : | INSEE Sanstha |
| Type : | Portland-Composite Cement |
| Sri Lankan Standard : | SLS 1697:2021 |
| Strength Class : | 42.5N/R |
| British Standard : | BS EN 197 CEM II-B/M |
| PROPERTY | SLS 1697:2021 Requirement | INSEE SANSTHA PORTLAND COMPOSITE CEMENT Average |
| PHYSICAL PROPERTIES | ||
| Compressive Strength (2 days) | ≥ 10 N/mm2 | ≥ 20 N/mm2 |
| Compressive Strength (28 days) | 42.5 – 62.5 N/mm2 | 52 N/mm2 |
| Initial Setting Time | ≥ 60 minutes | 130 – 150 Minutes |
| Fineness | Not Specified in Standard | 400 – 420 m2/kg |
| Soundness | < 10 mm | < 1 mm |
| Relative Density | Not specified in standard | 2.96 |
| CHEMICAL PROPERTIES | ||
| SO3 | ≤ 3.0 % | < 2.8 % |
| Chloride | ≤ 0.1 % | < 0.05 % |
| LOI | Not Specified in Standard | < 3.0 % |
INSEE SANSTHA is compatible with:
INSEE SANSTHA is used for:
The limestone particles used in the manufacturing of INSEE SANSTHA have enhanced fineness and act as a lubricant in the mix, while also retaining water effectively, thereby producing highly workable concrete. These same limestone particles enhance the overall particle packing in the mix due to their engineered fineness, resulting in the augmented density of the concrete and minimized corrosion of reinforcements, making structures extremely durable.
The engineered limestone particles in INSEE SANSTHA show increased strength development in concrete due to three factors; the rapid chemical
reaction of calcium carbonate with aluminate compounds in the cement resulting in durable carboaluminate crystals, the increased rate of cement
hydration, and the improved particle packing and overall concrete density, resulting in highly compact, superior strength concrete.
The finer blended INSEE SANSTHA cement also allows for the concrete mix to be more flowable and moldable due to its increased cohesiveness, producing superior and aesthetic cement surface finishes.
With enhanced particle packing of limestone due to their nature results in less space for water between the solid grains due to reduction in the connectivity of pores in the mix. This result of enhanced particle packing and increased mix density makes the resulting concrete extremely watertight.
A wide range of tests and equipment to assess fresh and hardened concrete properties
A wide range of tests and equipment to assess and ensure your aggregate grade meets the demand and requirement of your concrete.
A range of tests to assess properties of fresh concrete that go beyond the traditional ‘slump test’, improving the quality and consistency of concrete.
Advanced testing with durability indicators to optimize structural performance and extend the service life of concrete structures exposed to severe environments.