Concrete mix design methods pdf

Click here to sign up. Download Free PDF. Ofori IET. A short summary of this paper. Required Design Mix Data and Test 2. DOE Design Procedure 3.

Its popularity as basic building material in construction is because of, its economy of use, good durability and ease with which it can be manufactured at site. The ability to mould it into any shape and size, because of its plasticity in green stage and its subsequent hardening to achieve strength, is particularly useful.

Concrete like other engineering materials needs to be designed for properties like strength, durability, workability and cohesion. According to Bansal , Concrete mix design is basically the process of selecting suitable ingredients and determining their relative proportions with the objective of having minimum workability, strength and durability as economically as possible. The proportioning of ingredient of concrete is governed by the required performance of concrete in 2 states, namely the plastic and the hardened states.

If the plastic concrete is not workable, it cannot be properly placed and compacted. The property of workability, therefore, becomes of vital importance. The compressive strength of hardened concrete which is generally considered to be an index of its other properties, depends upon many factors, e.

In fact higher the grade of concrete more are the savings. Lower cement content also results in lower heat of hydration and hence reduces shrinkage cracks. Decorate, n. Related content. Authors: P. Domone , J. Jin , H-W Chai. Content tools. Add to Favorites Cite this Track Citations. Site Tools Sign up for e-alerts.

What is this? Permissions Recommend to library. Related search. By Author A. Long G. Slump and V-B time 2. Max aggregate size 3. These are: a mean day compressive strength measured on standard cubes of 44 MPa which is equivalent to a cylinder strength of 35 MPa ; a slump of 50 mm; uncrushed aggregate with a maximum size of 20 mm; specific gravity of aggregate of 2. Step 1. From Table Through A, we draw a line pa allel to the ea est cu ve u til it i te sects the ordinate corresponding to the specified strength of 44 MPa; this is point B.

Step 2. Step 3. Step 4. From Fig. Step 5. In Fig. Related Papers. Design of normal concrete mixes BRE. By Nor Hazurina Othman. By HonEy ArAin.