Professor Dr Engineer Thomas .A. Bier has said that according to European legislation, sustainable construction in Germany follows a guideline focusing on the design, construction and use of building materials with emphasis on ecological and economic aspects.
Bier is delivering a lecture on "trends for sustainable construction in Germany and Europe" organised by Pakistan Engineering Council (PEC) on Saturday. He is an eminent engineer and authority on the use of cement based materials.
He said that there is a strong pressure on construction material industry to reduce CO2 emissions. He also said that the production of building materials like cement requires huge energy consumption, which resulted in using new fuels like used oils, trashed tyres, animal bone flour and waste plastics. He said that some factories in Germany using nearly 100 percent waste fuels.
He said modified clinker chemistries, such as rapid setting cements, eco-cements or calcium aluminate cements are being used more frequently than ever before. Such clinkers allow reduction in sintering temperature and results in Co2 emissions.
Another approach, which is called clinker replacement he said could be adopted by using secondary raw materials, which could be inert, latent hydraulic and pozzolanic. In Germany buildings are thermally insulated to reduce energy consumption. He further said that energy also exploits huge natural resources and various materials procedures are used for this purpose. President Pakistan Engineering Council Engineer Husnain Ahmed said that early strength grout systems are used for repairs and construction.
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