High volume mineral additive for eco-cement

This paper presents a new approach to the production of High Volume Mineral Additive (HVMA) cement. HVMA cement technology is based on the intergrinding of portland cement clinker, gypsum, mineral additives, and a special complex admixture, Supersilica. This new method increases the compressive strength of ordinary cement to 140 MPa and also permits the utilization of a high volume (up to 60%) of inexpensive indigenous mineral additives in the cement. The research results demonstrate that a high volume of natural materials (alumosilicates, limestone, sand, natural pozzolans) and industrial by-products (granulated blast furnace slag, fly ash) and waste (chemical wastes, broken glass and ceramic) can be used as mineral additives in HVMA cement. The maximum quantity of mineral additives in HVMA cement depends on the type of mineral admixtures and its desired strength/durability level. The optimization of the composition of HVMA cement allows the production of a cement with maximal strength and at minimal cost