Answer / raghuram

2/3 OF THE 28 DAYS STRENGTH IS THE STRENGTH OF 7 DAYS .
RELATION WILL NEVER GET ALTERED DUE TO VARIOUS WATER CEMENT
RATIOS . IF THE WATER CEMENT RATIO CHANGES 28 DAYS STRENGTH
ALSO CHANGES ......................FINALLY AGAIN 7 DAYS
STRENGHT IS 2/3 OF THE FINAL 28 DAYS STRENGTH AFTER THE
WATER -CEMENT RATIO IS ALTERED

Answer / ramir v. agustin

In concrete testing samples aged in seven days should yield
70 percent of the specified strengt requirment and 28 days
sample should yield 100 percent of the compressive strength
required.Water cement ratio and amount of cement plays a
very important role in the production of good concrete.The
stregth of concrete depends on its water cement ratio

what is the proedure to do soundness test in cement? What is the maening of soundness? Why we do it for cement?

1 Answers  

---

what type of waterproofing and procedure using in building?

1 Answers   Tulip,

---

Cost control in civil construction as well as Quality control

11 Answers   Reliance,

---

please i wont to know the full meaning of P V C

6 Answers   DLEA,

---

"Gates of the dams are generally designed of curved shape". Why?

0 Answers  

---

What is special features of RGS Rebar detaling software?

4 Answers  

---

how to find out compressive strength of concrete

1 Answers   Adarsh Group,

---

Why the name is "partial safety factor" why not "safety factor"?

0 Answers   Engineers India Limited,

---

which type of test carrying on the cement & why

1 Answers   LG Soft,

---

whats the concrete mix design ratio for M 35

1 Answers   Rahman Industries, SPRRG,

---

pl.may i place dry mix in casting of drain bed partialy filled with water?if no pl explain.

3 Answers   KMC,

---

How to find concrete quantity for a circular column ?

2 Answers  

---