Concrete Aggregates

Care should be taken in chosing the aggregates for a good concrete mix. Some of the below listed recommendations are,Size of Aggregates :* The bigger the size of the aggregate, the less is the surface area and hence less amount of water is required for wetting the surface and less matrix or paste is required for lubricating the surface to reduce internal friction. * For a given quantity of water and paste, bigger size of aggregates...

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Concrete Admixtures

Types of Concrete Admixturesare, Plasticizers Superplasticizers Retarders and Retarding Plasticizers Accelerators and Accelerating Plasticizers Air-entraining Admixtures Pozzolanic or Mineral Admixtures Damp-proofing and Waterproofing Admixtures Gas forming Admixtures Air-detraining Admixtures Alkali-aggregate Expansion Inhibiting Admixtures Workability Admixtures Grouting Admixtures Corrosion Inhibiting Admixtures Bonding Admixtures Fungicidal,...

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How is Water Added to Concrete Mix in Mixing Process?

We all know the amount of water is very important to have perfect hydration of cement and water/cement ratio is one of the most important factors to controlstrength of concretewithout influencing economy of mix. So the amount of water added to mix should be accurate and no loss of water is expected to have soundconcrete mix. Graduate bucket is the way in which water is added to concrete in liters. But now-a-days use of graduate bucket...

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