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
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.
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|
|Strength Class :||42.5N/R|
|British Standard:||BS EN 197 CEM II-B/M|
|PROPERTY||SLS 1697 : 2021|
|INSEE EXTRA PLUS|
|Compressive Strength (2 days)||≥ 10 N/mm2||≥ 20 N/mm2|
|Compressive Strength (28 days)||42.5 – 62.5 N/mm2||52 N/mm2|
|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|
|SO3||≤ 3.0 %||<2.8 %|
|Chloride||≤ 0.1 %||<0.05 %|
|LOI||Not specified in standard||<3.0 %|
While OPC undergoes one reaction to form calcium-silicate hydrate gel (C-S-H) – the glue that holds concrete together – INSEE PCC CEMENT undergoes THREE reactions with INSEE’s trademarked SmartActTM Technology, promoting refinement of the pore structure of matured concrete. INSEE PCC CEMENT first undergoes the hydration reaction. This is followed by the pozzolanic reaction. A third nucleation reaction unique to INSEE PCC CEMENT further accelerates the hydration and formation of additional carbonate aluminate hydrate (C-A-H) growing between the capillarity pores, resulting in a denser microstructure as well as higher strength and durability at each level of maturity.
The very dense microstructure and low porosity makes INSEE PCC CEMENT the ideal product to be used in constructions in aggressive environments that contain sulphate in ground water or soils, salts and acids or any other exposure conditions.
Fly ash and slag as cementitious constituents used in INSEE PCC CEMENT reduces the alkali aggregate reaction (AAR) by bonding chemically the soluble alkalis in the cement
Featuring low heat of hydration development at early age, INSEE PCC CEMENT is highly recommended for mass concrete works, and the preferred solutions in hot weather conditions especially in tropical countries.
the new INSEE PCC contains up to 35% less clinker in its composition. INSEE PCC CEMENT also has an optimum particle size distribution with a high packing density which results in superior fresh and hardened concrete properties with high water retention, thus reducing the required mixing water to achieve the desirable workability with potential mix design and cost optimisation.
The finely engineered particles of high-grade calcium carbonate (CaCO3), finely blended slag, and spherical fly ash particles all act as lubricant, reducing water demand for the mixture while also increasing the fluidity and workability of the cement.
Rainwater enters concrete through open pores and capillary voids. The new INSEE PCC CEMENT formulation results in a very dense and impermeable concrete microstructure with very less voids and connected capillary pores. The optimal particle size distribution also means maximum packing density of the concrete, offering complete protection against water penetration and infiltration.
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.