6\\" T&G or CMU (Cement Masonry Unit Either T&G or standard CMU 6\\" walls can save you some money over the price of an 8\\" wall and as long as you keep them 6 feet high or shorter, you can feel confident, that when properly built they can last the duration of your mortgage and beyond - depending on trees, planters and Type in the brick wall’s length and height or its total area. If not, redesign the mix with proper adjustments until required strength of cube occurs.50 meters x 1.
Test that cubes and verify whether the required strength is gained or not.
CONCRETE MIX DESIGN CALCULATOR FREE DOWNLOAD TRIAL
Step 8: Trial Mixes for Testing Concrete Mix Design Strengthīased on the values obtained above, conduct a trail test by making at least 3 cubes of 150mm size as per above standards. Mass of fine aggregate is calculated from below formula Similarly, mass of coarse aggregate is calculated from below formula.į.A & C.A = masses of fine and coarse aggregates Alternatively, there are some formulae to find the volume of fine and coarse aggregates as follows. So, it is very easy that, 1 – volume of coarse aggregate will give the volume of fine aggregate. We already determine the coarse aggregate volume ratio in the total aggregate volume. Step 7: Calculation of Aggregate Content for Concrete Ratio of volume of coarse aggregate and volume of total aggregate for different zones of fine aggregate The greater of the two values is decided as quantity of cement content.įor the given nominal maximum size of aggregate, we can calculate the ratio of volumes of coarse aggregate and volume of total aggregates for different zones of fine aggregates from the below table. But, the value obtained should satisfy the minimum conditions as given in the below table. So, we can easily calculate the quantity of cement from these two conditions. Water – cement ratio is determined in step2 and quantity of water is determined in step -4. Step 5: Selection of Cement Content for Concrete If the shape of aggregate or slump value is differing from above, then some adjustments are required as follows. Below table will give the entrapped air content in percentage of volume of concrete. Water Cement Ratio Step 3: Determination of Aggregate Air contentĪir content in the concrete mix is determined by the nominal maximum size of aggregate used. Which is observed from the below graph.įig: Concrete Compressive Strength vs. Similarly, we can determine the water-cement ration from the 7-day concrete strength, the curves are divided on the basis of strength from water cement ratio is decided. Water cement ratio is selected from the below curve for 28 days characteristic compressive strength of concrete.įig: Selection of Water-Cement Ratio for Concrete Mix Design It is the important consideration in concrete mix design to make the concrete workable. Ratio of the weight of water to weight of cement in the concrete mix is water-cement ratio.
Standard deviation can be taken from below table Target strength is denoted by f t which is obtained by characteristic compressive strength of concrete at 28 days (f ck) and value of standard deviation (s) Step 1: Calculation of Target Strength of Concrete
Step 7: Calculation of Aggregate Content for Concrete.Step 5: Selection of Cement Content for Concrete.Step 4: Selection of Water Content for Concrete.Step 3: Determination of Aggregate Air content.Step 2: Selection of Water-Cement Ratio.Step 1: Calculation of Target Strength of Concrete.Concrete Mix Design Procedure as per is 10262 – 2009.
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