Answer / senthil473

after 28 days 99% of characteristics compressive strength will be achieved( rate of hydration is faster). after 28 days in a long course of time, say 1 year, the balance 1% strength will be achieved( rate of hydration is very slower). it is not desirable to keep the cube for 1 or 2 years and test , if the full strength is achieved. so we test after 28 days.

Answer / amr

The strength of a mix is described by its strength after 28 days from casting. if a concrete of M50; the compresive strength 50 unit achieve only after 28 days from casting

Answer / mr

In general concrete avmchieves it's maximum strength on 28 days , Thad why concrete cylinders are tested after 28 days to check whether the concrete has achieved the required strength

what is meant by pqc

2 Answers   APCO, Sunil Hitech Engineers,

---

Explain moment of inertia and its importance.

0 Answers  

---

What is the difference between absorption & adsorption and sorption?

0 Answers  

---

how many blocks required for 100sqft 8" blocks

2 Answers   NCC,

---

how to calculate number of bricks

3 Answers   Cognizant,

---

---

what is called fck

3 Answers  

---

draw the sfd and bmd of catilever beam subjected to point load and udl. plot graphically the difference in deflection pattern of simply supported and cantilever beam subjected to point load.

2 Answers   Microsoft, TCS,

---

yet i am not got any hallticket from aai junior excequtive exam.any one got application form from aai.

2 Answers   AAI Airports Authority Of India,

---

the distrubution system in water supplies is designed on the basis of avg daily demand peak hourly demand coincident of draft greater of B & C

0 Answers  

---

Reinforced concrete: suppose you are doing rough estimate for purchase of rebar for reinforced concrete slab for single stores residential building. You know total concrete volume will be 100 m3. How many tons rebar 6, 10 and 12mm will you require for the project?

1 Answers  

---

In reclamation works what are the importance of geotextiles and sand?

0 Answers  

---

Dear I would like discuss in deep beams problem in design and serviceability. please contribute to prepare a comprehensive discussion. first deep beam definition:

1 Answers  

---