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Grades of Concrete

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 Grades of Concrete Grades of  concrete  with ratio refer to the characteristics strength of concrete which is achieved by mixing adequate proportions of  ingredients of concrete  to achieve the desired strength after 28 days of curing period. The word characteristics of concrete are defined as the 95 percent of test results of concrete are expected to pass the strength specified after 28 days of curing period. As per IS456.2000, the grade of concrete is designated by using the letter “M” before the strength of concrete like M10, M15, M20, etc. Here “M” refers to the Mix of concrete and the number specifies cubical strength in Mega Pascals (Mpa) or N/mm 2  after passing of 28 days of curing period. Grades of Concrete with proportion The proportion of concrete is basically the number of ingredients required to make the grade of concrete. In other words, it can be said that how much cement, fine aggregate, coarse aggregate & water-cement ratio is required...
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How to render a wall with Cement Plaster?

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How to render a wall with cement plaster? This is the question of a basic finishing technique that i s  being applied at every construction site. Cement plaster works are the most extensively used finishing technique for the rough surface of walls or  concrete   structures. Cement plaster is the mixture of fine sand & cement which is mixed together with the inclusion of water. This cement plaster is used to spread over the surface that requires a finished surface. Plaster of pairs is yet another type of plaster. However, in this blog post, we are covering how to plaster a wall with cement. Detailed procedures of cement plaster Surfaces of undercoats shall be well prepared and cleaned to provide a good key for subsequent and/or finishing coats. Screed marks or making good on undercoats shall not show through the finishing coats. All surfaces to be plastered shall first be dashed with a mixture of Portland Cement and Sand (450 kg cement: 1 m3 sand) to form a key. Plaste...
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What is Development Length of Bars?

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What is Development Length of Bars? The development length of a bar can be defined as the minimum length of the bar which shall be projected or embedded into concrete beyond any section to develop its full strength. For a Beam column joint, the portion of the bar that is embedded in the column via beam main bar is termed as development length In the case of axial tension or axial compression, this bar is termed as anchorage length and for flexural tension or flexural compression, we call it development length. Why Development Length is provided?  It develops a safe bond between surfaces of the bar and concrete to ensure that during ultimate loading conditions, any failure due to slippage of the reinforcement bar does not occur. Further, development length is provided for smooth transferring of the stresses developed in any section to the adjoining sections. At beam-column joint, development bars are used to transfer stresses of beams into the column. If you want to learn more about...
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