Answer / rakesh kumar

characteristic compressive strength is strength of concrete, if group of samples are tested, 95% of samples have strength above it.
But compressive strength is strength of sample under axially compression loaded sample.

Answer / sandeep badwal

The difference is only in the manner of expression. Both the terms give us an idea of the strength of the material.
Consider concrete as an example. Concrete serves us well here since the characteristic strength of concrete is the parameter widely used to analyze and define the strength
For a cube of concrete, the compressive strength would be the resistance of that particular cube (or sample) to compressive load. It is measured by applying a certain compressive load and noting the load it can take before failure.
Characteristic strength of concrete would also give us the compressive strength of a particuar mix of concrete. However, determining the characteristic strength would involve testing a number of samples in the manner mentioned above and finding the compressive load that more than 95% of the samples can take.
Thus, while compressive strength gives us the strength of a single sample, characteristic strength would give us the probable strength based on a number of samples, which would be a more realistic assessment. It takes into account the variations due to improper mixing and distribution of the constituents of concrete.
The units used to express both the parameters are the same.

Calculate the quantity of concrete for the following. 2 Under-reamed cast in situ pile of 300 mm dia. of 10.00 m length.

13 Answers  

---

) Design a gussetted base for a column section consisting of one sc 250 with two cover plates 300 x 25 mm carrying an axial load of 2500 KN. The S.B.C. of soil is 250 KN/m2 and the permissible bearing pressure on concrete is 4000 KN.

0 Answers  

---

what is flashing?

0 Answers  

---

How many bags required for 1cum grouting?

6 Answers   Shine, Wockhardt,

---

in block masonry l=10',b=0.5',H=10',Calculate cement ,sand and no.Of blocks?

0 Answers   azan,

---

---

Why beam breadth smaller than depth

4 Answers   Shanthi Builders,

---

why shear is not considered in limit state of serviceability??

1 Answers  

---

why canot DBM is continue as surface coarse insted of BC? what is dieefrence between DBM & BC?

1 Answers  

---

what is westage % for steel, concrete,tiles,pains as per indian staderd code?

6 Answers   DLF, Engineering, Lodha, Tata Steel Limited,

---

01. a. Diagram of a slump cone…………… 1 b. Size of Slump Cone…………… 1 c. Volume of a slump cone by av. Dia method…………… 1 d. Volume of a slump cone by av. area method…………… 1 e. Volume of a slump cone by frustrum method …………… 1 f. Angles of slump cone …………… 1 g. Slump measured by slump cone due to…………… 1 h. Slump does not measured by cylinder / cube due to …………… 1 i) ii) i. Slump cone is to be filled in……………………..Layers.

0 Answers  

---

for gravel roads in India to get 1feet height how much height we have to fill

0 Answers   Sunrise,

---

How to calculate dry of volume of concrete constant?How it comes 1.54 or 1.57

0 Answers   Apex,

---