Activated pozzolanic material cements and resulting products are comprised of up to 95 percent green sustainable industrial waste stream materials, primarily fly ash. They are manufactured via a low energy, powder blending process. Key to green cement development was creating a material matrix that has a very dense crystal structure. This green cement technology possesses excellent performance and durability characteristics, including high early strengths and 28-day strengths over 70 MPa (10,000 psi). Moreover, they can be placed effectively with ambient temperatures ranging from -1°C to 49°C (30°F to 120°F).