Green Cement - Green Building

Green Cement - Greener Buildings

Wikipedia defines Green cement as a cementitious material that meets or exceeds the functional performance capabilities of ordinary Portland cement ( OPC ) by incorporating and optimizing recycled materials, thereby reducing consumption of natural raw materials, water, and energy, resulting in a more sustainable construction material.

Growing environmental concerns and the increasing cost of fuels of fossil origin have resulted in many countries in a sharp reduction of the resources needed to produce cement.
Rising awareness among consumers about the need for environmental preservation today, have made them conscious of the products they use.

Socially conscious industries, on their part, are working towards making manufacturing processes more sustainable and earth-friendly. Today's real estate developers and engineers are focusing on building green spaces through the use of smart concepts and green raw materials in the construction process. As a consequence, there has been a substantial growth in consumption of green cement.

Nearly 900 kg of CO2 are emitted for every 1000 kg of Portland cement produced.
New manufacturing processes for producing green cement are being researched with the goal to reduce, or even eliminate, the production and release of damaging pollutants and greenhouse gasses, particularly CO2.

The majority of carbon dioxide emissions in the manufacture of Portland cement (approximately 60%) are produced from the chemical decomposition of limestone to lime, an ingredient in Portland cement clinker. These emissions may be reduced by lowering the clinker content of cement. 

PPC Cement or Portland Pozzolana Cement or Blended Cement has in usual ratio anything from 65%-90% of raw cement, the rest being cementitious material. Thus it can be classified as a Green Cement.

PSC Cement or Portland Slag Cement by virtue of its low cement content combined with a high steel slag content is a prime candidate to be classified a Green Cement. PSC has a doube whammy in that it usually has a higher content of Slag than raw cement and plays a two-fold role in environment protection. Firstly, slag is a non-degradeable waste product of steel plants which left unutilized leads to severe environment damage. Secondly, PSC cement contains the least ratio of raw cement among cements, thereby cutting CO2 emmisions per tonne of cement produced.