Ans 1- A badly mix cement concrete results bleeding mainly... becoz if the water is more then the there will be laitance and the concrete will segregate... so bleeding is the cause of segregation... mainly bleeding happen and the component of concrete disparts and that cause segregation...... Ans 2- In 28 days concrete should achieve minimum compressive strength may be 15,35,50 etc etc... So in 28 days it gots it minimum compressive strength and 100% achieve for many more years
ans. 1= D bcoz bleading by over water and high vibration
ReplyDeletesgrgtion by high vibration and spreading from high hight
hony cmbng by low vibration
Ans 2= N/A.....concrete got 70% in 7 days , 99% in 28 days but contious getting its strength for many years
Ans 1- A badly mix cement concrete results bleeding mainly... becoz if the water is more then the there will be laitance and the concrete will segregate... so bleeding is the cause of segregation... mainly bleeding happen and the component of concrete disparts and that cause segregation......
ReplyDeleteAns 2- In 28 days concrete should achieve minimum compressive strength may be 15,35,50 etc etc... So in 28 days it gots it minimum compressive strength and 100% achieve for many more years
1. segregation
ReplyDelete2. 3years
thanx to all
ReplyDelete