Concrete Archive
Definition: f’c is the specified compressive strength of concrete using standard cylinders of six inches diameter and twelve inches height. Usually this is prescribed at the age of 28 days. f’c Explanation The word specified means here usually a set of …
Column members of a building goes under combined axial and flexure loads when they are eccentrically loaded. In the picture above, the pressure distribution at the base of the column under eccentric load has been discussed. Depending upon the magnitude …
The cracking phenomena usually start at ITZ- level. This level is considered to be a very thin region having access water and less cement. When water is consumed due to hydration of any other kind of purpose than it leaves …
A composite material usually consists of a matrix, a binder and reinforcement. Considering concrete as one material and reinforcement as another material with different properties, than it should be kept in mind that before any internal cracking the reinforcement usually …
Water proofing admixtures specialized in preventing concrete from water penetration. Concrete absorbs water, because there are capillary suctions within the hydrated cement paste that form due to surface tension in the capillary pores. How active water proofing admixtures are? It …
Concrete admixtures are not the essential component of the mix, but nowadays their use in concrete is increasing very rapidly and their importance is becoming more valuable. A concrete mix without admixtures is an exception in this real world and …
Concrete under water is a very delicate operation because inaccurately carried out concreting creates very serious problems. That’s the reason, experienced persons are required for under water concreting. There are following tips for better placement and for better results of …
Water to cement ratio is ratio between the weight of water and the weight of cement that is used in a fresh concrete mix. Water to cement ratio is one the largest single factor on which strength of compacted concrete …
Vibration of concrete is carried out for the sake of consolidation. The main objective of vibration is to compact the concrete and to achieve the maximum possible density of concrete. Almost 5 to 8% by volume of freshly placed concrete …
Anti bacterial admixtures are used against organisms like insects, fungi or bacteria that affects the property of concrete. Bacterial affect is not minor effect to concrete, but they affects very adversely. Organisms release corrosive chemicals through their metabolic action on …
