Orders | Contact Us | Client Login
888.840.2488
 Greencraft Design   Greencraft Building Systems   Greencraft Concrete Infrastructure   Sustainability & Energy Efficiency   About Greencraft   Media Room   Upcoming Events 
    Research & Results Sustainability Energy Efficiency
 

Sustainability and Energy Efficiency

Staying true to the promise of being environmentally responsible, all Greencraft products and systems have been designed to minimize the impact on the environment while maximizing the use of post industrial and post consumer recycled materials. Additionally, all Greencraft systems are highly energy efficient.

The challenge to the concrete industry has been to achieve these desired environmentally conscious results without adversely affecting the compressive strength, or other desirable properties, of the finished concrete.

/
Prior to the Greencraft technology, products and solutions, these results have been extremely difficult to achieve.

Greencraft has developed proven solutions for concrete composites that employ relatively high amounts of the recycled materials, such as Fly Ash, Slag cement and Recycled Glass, while significantly reducing the amount of Portland cement used. Thus, Greencraft has created a high performance concrete that is denser, less permeable, with higher early and ultimate compressive and flexural strength. This patent pending technology is pioneering “green technology” for today and the future.

Greencraft Smarter Building Systems™ are highly insulated and reduce energy loss though the building envelope. Greencraft buildings have reduced energy consumption; therefore, saving money right from the start. Greencraft buildings are resilient and long lasting with minimum maintenance costs. By improving the concrete lifecycle, the overall cost of construction can be amortized over a longer period. The cost of natural disaster damage repair and rebuild is skyrocketing. Greencraft buildings are safer and more disaster proof, thereby reducing the human and financial toll that natural disasters take each year.

Greencraft Architectural Finishes and Systems use recycled post consumer glass and aggregate. Discarded glass comes from a variety of sources and collectively, bottles, containers and sheet glass can account for as much as 30% of municipal waste streams by weight. Every metric ton (1,000 kg) of waste glass recycled into new structures saves 315 kilograms (690 lb) of carbon dioxide from being released into the atmosphere.

Greencraft’s concrete products use a low percentage of Portland cement and a relatively high percentage of recycled cementitious material while producing a stronger concrete than conventional Portland cement concrete. The production of one ton of Portland cement releases one ton of carbon dioxide (CO2) into the atmosphere, accounting for 5% - 7% or more of the world’s carbon dioxide emissions.

Greencraft Concrete is made with recycled cementitious materials, such as Fly Ash and Slag Cement. Fly Ash is a by-product of the combustion of pulverized coal in electric power generation plants. Of the 70 million tons of Fly Ash produced in the U.S. each year, only 30 million tons is reused and the balance of the 40 million tons is being dumped in landfills. Slag Cement is a by-product of iron or steel production. While some Slag is also reused, most slag sits in landfills near the iron furnace plants.

Visit:
Greencraft Smarter Building Systems™ 
Greencraft Concrete Infrastructure

More on Fly Ash
Fly Ash is a by-product of the combustion of pulverized coal in electric power generation plants. When pulverized coal is ignited in a combustion chamber of a power plant, the carbon and volatile materials are burned off. However, some of the mineral impurities of clay, shale, etc. are fused in suspension and carried out of the combustion chamber in the exhaust gases. As the exhaust gases cool, the fused materials solidify into spherical glassy particles called Fly Ash. When mixed with lime and water Fly Ash forms a compound similar to Portland cement. In the past, Fly Ash produced from coal combustion was simply entrained in flue gases and dispersed into the atmosphere. This created environmental and health concerns that prompted laws which have reduced Fly Ash emissions to less than 1% of ash production. 

The recycling of Fly Ash has become an environmental topic of concern in recent years due to increasing landfill costs and current interest in sustainable development. In the U.S. coal-fired power plants reported produce 70 million tons of Fly Ash per year with less than 30 million tons being reused in various applications. Worldwide the production of Fly Ash is more than 300 million tons per year with more than 65% being disposed of in landfills and ash ponds. If only the 40+ million tons of unused Fly Ash in the U.S. were recycled, it would significantly reduce the need for more than 25,000 acres of landfill space. Other benefits of using Fly Ash include reducing the demand for virgin material from quarries, and substituting material that may be energy-intensive to create, such as Portland cement.

More on Slag
Slag Cement (also known as ground granulated blast furnace slag) is a by-product of iron or steel production, generally consisting of silicon, calcium, aluminum, magnesium and oxygen. Some Slag is used for roadbeds and other filler application, but most Slag sits in landfills close to the iron furnace plants.

When iron is manufactured using a blast furnace, two products collect in the hearth – molten iron and slag. The Slag floats on top of the iron, and is skimmed off and fed to a granulator. The molten slag is rapidly quenched with water, resulting in glassy granules. Some Slag is used for roadbeds and other filler application. However, most Slag sits in landfills near the iron furnace plants.

Concrete made with Slag Cement has higher compressive and flexural strength over the lifetime of the concrete compared with conventional Portland cement concrete mixes.

More on Recycled Glass
Ever wondered why we don’t recycle more glass? Discarded glass comes from a variety of sources and collectively, bottles, containers and sheet glass account for as much as 30% of municipal waste streams by weight. That is a lot of material, but only a fraction of the total is recycled at present. With the right information, and with the right equipment, recycled glass cullet can become an enormous resource with huge potential for reducing our dependence on virgin materials in a wide variety of products and processes. 

Every metric ton (1,000 kg) of waste glass recycled into new items saves 315 kilograms (690 lb) of carbon dioxide from being released into the atmosphere. 

So why aren’t we recycling more?

Greencraft is committed to using the maximum amount of post-industrial and post consumer recycled materials, thereby removing them from landfills and incorporating them into a wide range of new, beautiful, exciting and useful building products.