Concrete Slab Details Pdf 11
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Curing of concrete is one of the most important factors in concrete construction as it is related to properties such as characteristic strength, permeability, durability, etc. Further, it is required to do the curing at the right time and a sufficient period of curing is very important to achieve the exact properties of concrete.
In addition, the rise of the core temperature needs to reduce and rising beyond the 70 Celsius, increases the risk of delayed ettringite formation. This reaction increases the internal volume and as a results concrete gets cracking. Core temperature can reduce with an introduction of the internal cooling method which discusses in the latter part of this article.
This method is very useful in dry environments as it is not required to pour the water continuously. All the flat surfaces such as road pavements, slabs, footpaths, etc can cure with this method easily.
The methods discussed under the title water curing can only be used to cure the horizontal surfaces. Vertical surfaces in concrete columns, walls, etc. can cure with this method as indicated in the following figure.
Further, when the transmission of the heat in thick concretes are becoming an issue, formwork curing is used as an alternative. Depending on the heat, peak temperature, temperature gradient and temperature different the thickness of the formwork can be finalized.
Depending on the outcome of the test, formwork material, its thickness, placing temperature of concrete, the measures for reducing the heat of hydration, etc are done. Generally, the test is done for the above conditions and checked whether they are acceptable.
Both the type of the sheet is sued to cure the flat surfaces usually. Polythene sheets are sued to cover the concrete slabs and columns. The sheet can be placed on the slab just after it gets hardened.
Shelter areas are also created by using the polythenes in addition to applying them to the concrete. It allows the concrete to dry naturally. Special occasions less evaporation and concrete not that structurally important, this method can be used.
In addition, the moisture required for the hydration process is not adequate. It causes the reduction of the strength of the concrete and the same can be identified as a factor affecting the durability of concrete.
The designer verifies these tables and details (assemblies) to reflect field conditions, all applicable local codes, N.E.C., Fire Codes, and the most current version of the U.L. Directory. These tables and details (assemblies) are in no way intended to replace good, sound design judgment. They are shown for illustrative purposes only.
The designer must verify these details (assemblies) to reflect field conditions, all applicable local codes, N.E.C., Fire Codes, and the most current version of the U.L. Directory. These details (assemblies) are in no way intended to replace good, sound design judgment. They are shown for illustrative purposes only. 153554b96e
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