Answer Posted / ravi pratap singh tomar

Concrete Mix Design is the name of procedure...it can be performed by BIS or ASTM standerds.
things to be known/assumed:-
1.compressive strength of 28days
2.maximum size and type of aggegate
3.degree of qulity of controll,workability and
4. type of exposure/type of cement etc
procedure:-
1. find target mean strength-by Ft=Fck+1.65*s(s-std deviation ,varries w.r.t grade of conc.)
2. water cement ratio- this find with the help of a graph W/C ratio Vs Fck.approximate air contant s found by another table wrt aggre gates s max size.(genrally-0.6to .35)
3.find workabiliti den multiply by 0.8follow a table to find zone nd % of sand .
4.now cement ,voids sand water are known along with total aggregate then finally using a specific formula given in BIS course and fine aggregates r also estimated.

pls tell me , what is the water content

1668

---

how can calculate the compressive strength of concrete cylinder by water cement ratio ?

1231

---

Describe Briefly The Various Methods Of Concrete Curing?

671

---

What in your past experience or education prepares you for the position for which you are applying

1697

---

what is the anchorage length of reinforcement.

1297

---

---

How to make a c++ program that converts any base to base 10?

1614

---

what is the minimum cement content for M20 & M25 as per is code -456(2000).

2703

---

what is the difference between replacement of cement by groundnut shell ash

2506

---

if we use 1.25 bag of cement 3 pharma metal and 2 pharma crush sand what is the strenghtexpected for RCC column

1612

---

Explain what is structural frames or systems?

656

---

how to calculate the material from ratio of work PCC, RRM,POINTING, RCC

1882

---

how we check the thickness and line of ceiling plaster.

2221

---

it is possiblee to produce concrete with out cracks...

1472

---

What are the different softwares used for cad?

718

---

how many kg cement & fine sand reqird in one sq meter 1:6 mortar ratio?

1982

---