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.

how to identify different types of soils in field?

2 Answers  

---

Whats the standard thickness of 20'/30' wide rcc service road and what will be the estimated cost per cubit feet

0 Answers   Jain Associates,

---

How much cement is require in one sqft area in a G+3 residential construction.

0 Answers  

---

How to calculate water cement ratio in mix desion

2 Answers   Delta,

---

What is the Compressive strength of concrete C40/20 at 7days

1 Answers  

---

---

how to check and keep control on the wastage of material at site

0 Answers   Aashray Design Consultants, ABC Infra, Jain Group,

---

How to calculate the shuttering materials i.e MS sheet,Props,Acrow Spans,2'x3' Runner,4'x3' Runner & beam plywood bottom, sides in thumb rules in slab area

1 Answers   TATA,

---

WHAT IS THE CAUSES OF RUTTING ON FLEXIBLE PAVEMENT?

0 Answers   Ace Info, Anil Group,

---

What is meant by Rolling Margin? & which material will effect in this ?

2 Answers   Construction, L&T,

---

how much quantity of blocks, cement and sand is required to complete 1sq.m of CC Hollow blockwork. Size-16"x8"x8". Also what is the cement sand ration commonly used?

10 Answers   ACC, CCCL, L&T, MFAR, Shoba Devlopers, SLS Developers,

---

cement quantity in 1 M3 pcc

2 Answers  

---

how to calculate detail quantity of bricks and mortar for 500 cu.ft masonry work. consider wall thickness 9 inches

0 Answers  

---