Cement Replacing Materials
Summary
Cement Replacing Materials - Materials which can slightly alter and improve the properties of concrete. Most cement replacing materials are categorised as pozzolans.
Technical Information
Using cement replacing materials in concrete can alter the following properties of concrete:
- Early strength
- Ultimate Strength
- Workability
- Sulphate resistance
- Heat of hydration
Chloride diffusivity Some examples of cement replacing materials are:
- Pulverised fuel ash (PFA)
- Ground granulated blast furnace slag (GGBFS)
- Silica fume (SF)
- Metakaolin
- Limestone fines
As a lot of cement replacing materials are by-products of other industries; they can be cheaper and more environmentally friendly to use than 100% Portland cement. Overall proportioning must be checked to ensure that there are no unintended adverse side effects from additional cementitious materials.
Related Definitions
Concrete Rheology , Permeability , Thermal Cracking , Ground Granulated Blast Furnace Slag (GGBFS) , AdmixtureResources
Portland Cement Association. "Chapter 3 Fly Ash,Slag,Silica Fume,and Natural Pozzolans" MAXWELL - Study of the Mineralogical Changes of Clay Due to Cement and LimeAddition Using X Ray Diffraction Technique The Concrete Society – Technical Report No. 74 – Cementitious Materials
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