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.
Need to know about compressive strength test and tensile strength test of cement
During steady and uniform flow through an open channel of uniform cross section, a person claims that the specific energy of the fluid remains constant. A second person claims that
Discuss Scope and necessity of O.R in industry ?
Supplementary or Untensioned Reinforcement It is that reinforcement, provided in prestressed concrete member, which is not provided in a stretched condition like tendons.
Using Laplace transfom, the following differential equation d y dy dt reduces to the algebraic equation of the form Resolve y(s) into partial fractions
A train starts from rest as A and accelerates at 1,7m/s2 to full speed at which it maintains until the brakes gives it a deceleration of 1,7m/s2 to stop at B. AB=1,6km. determine
Parallel Pipe Systems or Multipath Pipeline Problems Two or more sections of piping (branches) of different diameters, lengths and/or pipe materials originating and terminating
A 30 cm diameter pile penetrates a deposit of soft clay 9 m deep and rests on sand. Compute the skin friction resistance. The clay has unit cohesion of 0.6 kg/cm 2 . Suppose
Road Maintenance: Importance of Road Maintenance Roads deteriorate in their condition due to traffic, rain, snowfall and temperature variations. They requirement to b
Question In soil compaction test , if test result exceeds 100%, should engineers accept result? Answer Soil compaction is method of increasing soil density by re
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