Displaying items by tag: AAC

UK: Quinn Building Products has fitted a waste heat recovery (WHR) plant into the aircrete block production process at its Quinn Lite Plant in Fermanagh. The installation will pump thermal energy from excess heated water back into the pre-curing chamber to sustain the chemical processes by which the blocks are aerated. Quinn Lite production manager Kieran McGorman said that the upgrade ‘forms part of a larger, company-wide drive to minimise the impact of our operations on the environment and to maximise efficiencies wherever possible.’

Nepal: The Nepalese government has implemented new cement regulations specifying the minimum compressive strength of 33MPa. The Republica newspaper has reported that this will follow the 1997 Cement Standard in restricting magnesia (MgO) content to 5% and insoluble residues to 2%. Two higher grades will designate cement with compressive strengths of 44MPa and 55MPa.

The government also introduced regulations governing the compression strength, insulation and density of autoclaved aerated concrete (AAC) blocks.