Different species of bacteria have been reported to precipitate Calcite, produce endospores, survive concrete production and multiply in hydrating Mortar and Concrete body, precipitating calcite in voids/pores / microcracks resulting in autogenous repair in-situ or… Read More »Investigations on Strength and Durability aspects of Bacterial Mortars & Concrete
Jarosite is a by-product generated by the Zinc industry during the hydrometallurgical process, contains predominantly Fe2O3, SO3 and alkalis with small amount of ZnO. Mineralogical evaluation indicate predominance of Natrojarosite [NaFe3(SO4)2(OH)6] along with gypsum [CaSO4.2H2O]… Read More »Use of Jarosite in Cements – Effects on Cement Properties .
The Concrete has been traditionally made with use of Natural / River sand as fine aggregate. As sand contributes to around 25 to 35% of total concrete along with coarse aggregates, cement & water, the… Read More »Use of Crushed Stone sand & its impact on Concrete Performance
Over the last decade the cement and concrete industry has been gradually shifting towards high performance concrete durable and sustainable construction. Construction practices in the country have accepted the blended Cements or Blended concrete as… Read More »Composite cement: Option for sustainable construction
In India as per the Guidelines issued by MoEF on SOx emissions, the allowance limits for SOx emissions for cement Plants with co-processing of wastes would be 100, 700 and 1000 mg/Nm3, for the pyritic sulphur… Read More »Innovative Rapid method for determination of Pyritic Sulphur in Limestone & Process samples