Abstract
The world production of cement has greatly increased in the past 10 years. This trend is the most significant factor affecting technological development and the updating of manufacturing facilities in the cement industry. Existing technology for the production of cement clinker is ecologically damaging; it consumes much energy and natural resources and also emits pollutants. A new approach to the production of blended or high-volume mineral additive (HVMA) cement helps to improve its ecological compatibility. HVMA cement technology is based on the intergrinding of portland cement clinker, gypsum, mineral additives, and a special complex admixture. This new method increases the compressive strength of ordinary cement, improves durability of the cement-based materials, and - at the same time - uses inexpensive natural mineral additives or industrial by-products. This improvement leads to a reduction of energy consumption per unit of the cement produced. Higher strength, better durability, reduction of pollution at the clinker production stage, and decrease of landfill area occupied by industrial by-products, all provide ecological advantages for HVMA cement.
Highlights
According to Cembureau’s report[1], the world production of cement has increased by about 50% in the past 10 years (Fig. 1)
In this way high-volume mineral additive (HVMA) cement contributes to the reduction of CO2 and other emissions at source; industrial by-products and waste (IBPW) materials that would be otherwise transported to landfill sites are used economically
Due to its better ecocompatibility, the market share of HVMA cements will increase in the future
Summary
According to Cembureau’s report[1], the world production of cement has increased by about 50% in the past 10 years (Fig. 1). If the production of cement is further expanded based on the existing technologies, products of the same performance will be obtained, but at a cost of increasing the consumption of raw materials and energy. Production of more durable cement-based materials with a significantly prolonged service life and reduced cost of maintenance
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