The Research and Development which transformed the Pressed Concrete Industry – Tech-Dry Masonry

Between 1992 and 1996, Tech-Dry supported the development of KR2, a silane/siloxane emulsion designed to improve the durability of concrete masonry. PhD student Ren Kebao led the research at Victoria University of Technology, with financial backing from Tech-Dry, Dr. Douglas Kagi, and the Australian Government.

KR2: Transforming Concrete Masonry

KR2 introduced a water-repellent admixture that manufacturers could add directly to dry mix concrete blocks and pavers. This innovation addressed long-standing issues such as efflorescence, colour change, and water absorption, factors that had previously damaged the reputation of pressed concrete products.

Before KR2, many architects and builders avoided dry-pressed concrete. They preferred clay alternatives due to moisture-related damage. Tech-Dry’s admixture changed this. It allowed manufacturers to create water-repellent, colour-stable masonry. They no longer needed post-construction coatings, which often increased costs and introduced environmental concerns.

Initial uptake was slow but gained momentum, notably through C & M Bricks (later Adbri) in Victoria. CSIRO and ABSAC approved the technology after successful trials, prompting widespread industry uptake. Tech-Dry also exported the technology to Europe, Japan, Malaysia, and South Africa. The finished products as blocks (bricks) and pavers were known as Tech-Dry Masonry. Architects across Australia continue to specify them under that name.

It is important to note that the use of the “Tech-Dry Masonry” name for products not containing the KR2 admixture is considered misleading and a serious offence under Australian trade practices law, overseen by the ACCC.

Tech-Dry KR2 represents a major advancement in concrete technology, enhancing durability and extending the market viability of pressed concrete masonry products worldwide.

Explore how Tech-Dry KR2 can transform your concrete masonry products with lasting water repellency and colour stability. Contact Tech-Dry for expert guidance, product support, and tailored solutions that meet your manufacturing needs. Future-proof your builds with trusted Australian innovation in admixture technology.