Answer / manohar cherala

The relation between the strength of concrete at lower age
and 28 day depends on may factors like chemical
composition,fineness of cement and temparature of curing.
Mixes with lower water cement ratio's gains early
strength's more rapidly than that of concrete with higher
water cement ratio's.Because of arrangement of cement
particles more closer in lower water cement ratio's and
formation of continous gel which gives more strength.

In general the 7 day strength is not less than 65% of 28
day strength

Answer / palash

1 day strength - 16%
3 days - 40
7 days - 65
14 days - 90
28 days - 99

Answer / vinaysagar donakanty

The 7 days strength is help you to deshutter the shuttering for slab or beam. According to 7 days results we able co-relate the strength we will achieve the strength at 28 days. The lower W/C higher the strength.

What is the bowing depth after stressing of PSC Girder of various spans and various dia of strands?

0 Answers  

---

What is lever arm distance

1 Answers  

---

sir please send me campus placement questions in civil engineering

0 Answers   Gammon,

---

first wt is reqd. for making a mix design of concrete & the procedure of determining the qty. of material used in concrete.

1 Answers   BirlaSoft,

---

How to increase a bearing capacity of soil?

0 Answers  

---

give me the rate analysis for Bituminous Macadam and SDBC

0 Answers   CCCL, IVRCL,

---

For Beam steel reinforcement detailing, in the End of the beam do the making of L shape in the rebar is essential in all the cases, specially in the ends of the Beam?

2 Answers  

---

how we calculate the vol.of wet concrete..?

0 Answers   SOM,

---

punj loyed and sapurjl palanjl

0 Answers  

---

what is calculation of cement, snd of 1:4 16mm,12mm plastring

2 Answers   Supertech,

---

What does 'M' stands for in M24 bolt ?

2 Answers   Rites,

---

Describe the various methods of concrete curing?

0 Answers  

---