
Concrete is a construction
material which is composed of
Cement (generally Portland cement),
coarse aggregate (gravel, limestone, or granite), fine aggregate
(such as sand) and water. Concrete is required to be workable,
finishable, durable, strong, watertight and wear resistant to be
used a structural material. Generally these are obtained by proper
selection of materials
Sometimes
admixtures are also added
to concrete to give it special properties required to meet
certain conditions.
Recycled materials are also being used
as concrete ingredients and getting popularity as it helps in
pollution control and clean
environment.
Fly ash which is a
byeproduct of coalfired power plants has a cementitious property
which when added to concrete, reduces the cement content required to
produce a concrete of desired strength. 
Featured Links
RC Beam Calculator^{New}
Calculate the strength of reinforced concrete beams
Bending Moment
calculator^{New}
Calculate Bending moments for simply supported beams
CE QUIZ^{New}
A collection of quiz in different areas of civil
engineering
CE Horizon^{New}
Online Civil Engineering Journal and Magazine
Profile of Civil Engineers^{New}
Get to know about distinguished civil engineers

Concrete becomes solid mass after cement
mix with water which is a chemical reaction known as hydration of
cement. The
process of solidifying concrete is known as setting of concrete
which depends on the type of cement used in the concrete mix.
Concrete is a brittle material which is
strengthened by using steel reinforcement bars (rebar), plates or
fibers; such a concrete is termed as
reinforced concrete.
Proper selection of materials in
appropriate proportions is very important to get the desired
properties of concrete. This is covered in concrete mix design.
There are different methods for mix design. Absolute volume method
developed by American Concrete Institute (ACI) is one of the most
commonly adopted methods.
Problem Solver^{New}
A collection of illustrated solved examples for civil
engineers.
Deflection Calculator^{New}
Easy to use calculator for different loads on beams 
Moment
Distribution Calculator^{New}
Easy to use calculator for solving Indeterminate beams with
different load
Overhanging
Beam Calculator^{New}
Bending Moment & Shear Force Calculation
for Overhanging beam with different loads
Fixed Beam Calculator
Shear force and bending moment calculations for different loading
cases of Fixed beam
RC Beam Calculator^{New}
Calculate the strength of reinforced concrete beams 