The GTC Cements are specifically formulated to reduce the environmental impacts of cementitious binders used in concrete and stabilisation products. GTC Cement uses by-products from industrial waste such as slag and flyash to ensure a significantly lower product life cycle impact; it provides the option of using a binder with significantly less material input, energy input and emission output. A very low embodied energy material can be created.
GTC Cement complements these significant environmental advantages with its superior technical qualities without adverse cost implications.
Life Cycle Analysis (LCA) considers a range of environmental impacts such as resource depletion, energy and water use, greenhouse emissions and waste generation among others. GTC cements perform significantly better than Ordinary Portland Cement (OPC) in all of these LCA categories.
GTC Cement reduces demand for OPC, a product derived from inherent natural resources.
GTC Cement reduces the demand requirements for the burning of fossil fuels used in the energy intensive cement clinker production.
GTC Cement use will displace approximately 700kg of CO2 emissions for each tonne of slag used as an OPC replacement.
GTC Cement uses an industrial by-product as its major blended component - Fly Ash, a by-product of coal, which would otherwise end up in landfill.
Achieving sustainable concrete design with GTC Cement
Sustainable concrete design can be achieved by reducing embodied energy in specified materials; and by increasing durability. Both criteria can be satisfied with the use of GTC Cement.
The GTC Cement LCA illustrates the reduced embodied energy associated with using slag blended cements. Equally important is the quality of construction materials, and longevity contribution to the structure.
Advantages of using GTC Cements
|Environmental benefits||Technical benefits||Economic benefits|
|Reduced CO2 emissions||Higher ultimate strengths||Longer structural life|
|Use of an industrial waste diverted from landfill||Increased durability with higher chloride & sulphate resistance||Reduced structural maintenance cost|
|Reduced demand for virgin limestone resource||Lower heat of hydration||Equivalent or lower initial & secondary cost|
|Energy resources saved, reducing need to burn fossil fuels||Enhanced workability in both concrete & stabilisation products|
|Heat island effects reduced||Protection against AAR|
|Lower embodied energy||Efficient hydration at higher strengths|
|Extended structural life||Self compacting abilities increased|
|Dye & pigments more readily accepted|