Concrete Archive
When fresh concrete is laid at the site then proper curing of concrete is required, because structures are exposed to the environment and in these conditions if there is no such an arrangement against the environment, then there are many …
Water amount is the most prominent factor that affects the workability of freshly laid concrete. Workability is essentially the measure of how easy fresh concrete flow in between the voids. If concrete workability is more than in the same manner …
With the passage of time after mixing ingredients of concrete with water, workability of concrete starts shrinking. This happens because of fluidity loss from the concrete. Fluidity is the amount of available water in concrete that is being utilized in …
Bleeding in concrete is the movement of water to the surface of the concrete after manipulation. Bleeding is more prominent on the surface of concrete, when water to cement ratio is higher and it occurs when ingredients of concrete are …
A slope of the secant between two points on the curve is known as secant modulus. Secant modulus is applicable when concrete specimen shows non-linearity or where initial tangent modulus not gives too much required information. It is mostly applied …
Elastic modulus of concrete is not easy to determine, because of non-linear behavior of concrete. Concrete is very strong in compression but very weak in tension and this is the main reason for non-linear behavior of concrete. To overcome this …
Poison’s ratio is the ratio between lateral strains and longitudinal strains. Poisson’s ratio, mathematically can be given as: V= – (lateral strain)/(longitudnal strain) When compressive force acts on a specimen then with the increase in force, two types of strains …
Strain is the change in length as compared to original length that is before any variation. Strains in concrete are the reduction in volume of concrete after the application of loading then change in volume with respect to volume of …
Stress is defined as; ” force per unit area.” Stress is the combination of loads like dead loads, live loads, wind loads that will acts on the structure during construction and during service life. Mathematically given as: Stress = force/Area …
Mainly water reducing admixtures are divided into two categories depending upon the amount of dose being use in concrete and in result the decrease in the required weight of water. Low range plasticizers or regular plasticizers High range or super-plasticizers …