The weight of concrete and their mix design | weight of concrete per m3 | weight of plain cement concrete (pcc) | the weight of reinforced cement concrete.
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1)what is concrete and its types and properties
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Concrete is a mixture of several natural constiuents like Binder as cement, water, sand, crushed stone and aggregate (coarse sand), it is also used for precast concrete masonary unit or CMU, known as concrete block and concrete cube.
Cement is fine, adhesive material act as binder for othersr constituents which are mixed in concrete, which hardens in the presence of water due to form calcium hydrate.
Concrete masonry unit in short form represented as CMU made of concrete, mixture of cement, sand and water. There is a form of concrete masonry unit concrete block, concrete bricks, hollow concrete block, solid concrete block, lintel block, concrete stretcher block, concrete pillar blocks, partition concrete block, corner concrete block, concrete pillar block.
Water is required for the cement to harden and in order to lay it. We should mix required quantity of water in the mix to get desirable strength, however, care is necessary as too much water reduces the strength and durability of the concrete.
Aggregate or coarse sand is important part of concrete, it varies in size from sand to gravel, which forms the main skeleton of the concrete. Besides this, some additives material like fly ash required, they modify the properties of the concrete depending on their nature.
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The weight of concrete and their mix design
To formulate the mix design of concrete, it is firstly necessary to select type of aggregate or crushed stone and the size of the particles. Then the type of cement, there is a large variety of types of cement with different characteristics and performances.
In General we use 1:2:4 mix ratio by volume, in which one part is cement 2 part is sand and 4 part is aggregate and water cement ratio is 0.4.
In general, weight of concrete per m3 is 2400kg, if steel is provided in concrete, then, for 1 cubic metre, the weight of reinforced concrete or rcc is generally taken as 2500kg, and however, if steel is absent from concrete, then, for 1 cubic metre, the weight of plain cement concrete or pcc is generally taken as 2400 kg.
In general, for mix design, typically, one cubic metre of concrete weight is 2.4MT, and its ingredient consists of approx 350 Kg of cement, 700kg sand or fine crushed stone, 1200kg of aggregate or chipping material mixed with on average 150 Litres of water.
