1. Before we explain photocatalytic concrete ill review and explain sustainability. READ SLIDE Sustainability should be more than just not using up all the resources, but replenishing them as well. It is important that we fully understand sustainability so that its implementation becomes more predominant and we achieve a sustainable prosperity.

2. As the Vinn diagram show Sustainability is an overlapping balance of three major components, ECONOMIC, SOCIAL, and ECO-LOGICAL. To achieve sustainability, non of the three can jeopardize one or the other

3. To get a better understanding I put it In my own words Sustainability should be defined as allowing all humans to live with their basic needs met but leaving the opportunity to pursue our lives in satisfaction without risking or denying others in the present and future to do the same. To do this, we must be innovative when using resources and allow ourselves room to restore them to full capacity, without furthering the de gradation of the Earth’s systems.

4. As we may already know Concrete has established itself as the most important building material worldwide with a production estimated at 10 billion tons each year.

5. Unfortunately popularity comes with a significant price, and which until recently has been too far overlooked

6. Alone, for the sheer volumes produced each year, concrete has inherited an enormous negative impact on the environment. The concrete industry has become a victim of its own success and therefore is now faced with tremendous challenges.

7. Cemen-titious material properties have not only slowly begun to exhaust many of the earth’s materials but Portland cement is not particularly environmentally friendly material.

8. I find it unfortunate that the principles of sustainable development in concrete were not instilled before its production began to