Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question
Why do BS8007 specify permissible crack width of water retaining structure as 0.2mm for severe, extremely severe exposure?
Answer
For break width less than 0.2mm, it is thought that mechanism of autogenous healing will take place in which crack will routinely seal up and this would not cause problem of leakage and reinforcement corrosion in water retaining organization. When cracks are in inactive state anywhere no movement takes spaces, autogenous healing occurs in presence of water. Still, when there is a continuous flow of water from side to side from these cracks, autogenous healing would not acquire place since flow removes the lime. One of mechanisms of autogenous healing is that calcium hydroxide in concrete cement reacts with carbon dioxide in atmosphere, resulting in formation of calcium carbonate crystals. Slowly these crystals build up and grow in these tiny breaks and form bonding so that cracks are sealed. Because first documented discovery of autogenous healing by French Academy of Science in 1836, there have been numerous preceding proofs that crack be sealed up naturally by autogenous healing. Since of its self-sealing property, designers normally bound crack width to 0.2mm for water retain arrangement.
how can we post tension a raft foundation? what design procedure should we follow to post tension raft foundation in order to decrease the concrete and steel volume and increase th
What are the various methods of recording measurements? List five items each for various methods of recoding measurements?
Define Reactivity - Hazardous Waste - Undergoes violent Change w/o detonating - reacts violently with water - Forms potentially explosive mixtures with water - generat
how to convewrt wcb into rcb
Resultant Force on a Given Area of a Horizontal Plane By equation, the total vertical force applied to an area A on the plane is: Resultant Force R = ΡA = (lb/ft 2 )(ft 2 )
Uses of Stones Stones are used in the following civil engineering constructions are described: (i) Stone masonry which is used for the construction of foundations, , columns
State the term - Failure Due to Strain In most of the cases of pre-stressed concrete construction, the failure of underreinforced and lightly reinforced members shall take pla
Operation in chain surveying
How the Bursting Tensile Forces produced These are tensile forces produced due to concentrated longitudinally applied prestressing forces in the end zone of a post-tensioned co
I have to draw the IL for the shear at a roller support and am not sure how it should look
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd