Nowadays in many situations, concrete is placed through pipes. Thus the Engineer in-charge must be acquainted with the pumpable concrete. Pumpable concrete is not a special concrete, but an ordinary concrete which can be pushed through a pipe line is called a pumpable concrete. This concrete should be proportioned in such a way that its friction on the inner walls [...]
For the mix design of concrete following data is required: 1. Characteristic (Targeted) Compressive Strength at 28 days 2. Degree of Workability (Selection of Water-Cement Ratio) 3. Estimation of Entrapped Air 4. Selection of Water-Cement and Fine to Total Aggregate Ratio 5. Calculation of Cement Content 6. Calculation for Aggregate Content and a Few Others. 1. Characteristic Compressive Strength at [...]
The following points highlight the five methods of concrete mix design. The methods are: 1. American Method of Mix Design 2. Graphic Method of Mix Design 3. Mix Design by Indian Standard Method 4. American Concrete Institute Method of Mix Design 5. Rapid Method of Mix Design. 1. American Method of Mix Design: The American Concrete Institute (ACI) method is [...]
The following points highlight the DOE methods of concrete mix design. The methods are: 1. The Department of Environment's Design Method (DOE Method) 2. Concrete Mix Design by DOE Method using Fly Ash. 1. The Department of Environment's Design Method (DOE Method): The DOE method of mix design is an improvement over Road Note No. 4 method. This method of [...]