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Made with an intimate and uniform blend of ordinary Portland cement and fine Pozzolonic material / Slag, Blended Hydraulic Cement meets stringent conditions for unique environments and construction requirements.

Designed for Aggressive environment & low heat applications, Blended Hydraulic Cement is composed for the use on large constructions, including bridges, dams, etc., as high-level heat generation can cause developing cracks in structures. Also, Blended Hydraulic Cement is chemically robust and underline the property of corrosion resistance, preventing additional reinforcement requirements for more extensive constructions. Also, the corrosion resistance quality and the chlorine attack resistance quality of Blended Hydraulic Cement make it ideal for coastal side and acidic environments such as underground construction. As Blended Hydraulic Cement is fly ash based, it can be used for road construction work, sulphate resistant work and marshy land constructions. It is a highly flowable cement type (50 – 100m), making concrete pumping easier with less cost.

As made for specified constructions and environments, Blended Hydraulic Cement meets the quality requirement specified by Sri Lanka Standard SLS 1247: 2015.

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Product Description:

Product Name : LANWA Sanstha Blended Hydraulic Cement
Designation : Portland Slag Cement
Strength Class : 42.5N
Comply With : SLS 1247:2015

Lanwa Sanstha Portland Slag Cement is a quality assured cement, manufactured in compliance with SLS 1247:2015 product specification, the national standard. The cement is produced using high quality raw material followed by strict quality controlling procedures focusing the high consistency final product to exceed the customers satisfaction.


Lanwa Sanstha Portland Slag Cement is commonly uses for wide range of application including concreting, rendering, plastering and pre cast production.


Lanwa Sanstha Portland Slag Cement manufactured fulfilling the government mandatory requirement published in SLS 1247:2015, by Sri Lanka Standard Institution. In addition, factory management system based on ISO 9001:2015 and supported by ISO 14001:2015, ISO 45001:2018. All the quality assurance and control activities are carried out focusing ISO/IEC 17025:2017 requirements.

Mix Design and Compatibility:

It is strongly recommended to carried out trail mixes based on proper mix design method published by globally recognized technological institution prior to commence the work in order to avoid unexpected circumstances.

The cement is compatible with wide range of admixtures and additives developed to enhance the individual performance of concreting, grouting, rendering and mortar application, but not limited.

Technical Compliance:

Average standard water consistency as per SLS ISO 9597 is 26.0%