PELCON has the needed understanding and experience from the improving of numerous concrete compositions, sometimes triggered by changes of apparent minute details. Our strategy comprises:
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A well workable concrete ensuring compaction, bonding to reinforcement and form filling
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Where possible including the application of SCC
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Robustness, ensuring that minor batching variations are not detrimental
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Selection of aggregate gradation and grain characteristics that ensures a uniform distribution within the in-situ concrete, hence reducing the risk of local shrinkage and crack problems
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Composition and content of cement paste ensuring internal bonding, no internal bleeding and segregation
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Relatively low amount of cement to reduce risk of thermo cracks and hydration shrinkage cracks
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Possible addition of pozzolans to reduce risk of cracks and increase the chemical resistance.
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The incorporation of an air void system of small and evenly dispersed air bubbles having a positive influence on several of the above issues