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!
Q. Time to remove formwork to cater for early thermal movement?
Let's take a circular column as an illustration to explain effect of internal restraint to thick sections.
When temperature is increasing, temperature in the core is higher than outer zone. The inner core would have a higher expansion and exert pressure to the outside. Induced compressive stress will yield the formation of radial cracks near the surface of concrete.
When temperature drops, concrete at outside drops to surrounding temperature whereas the concrete at central region continues to cool down. Contraction associated with inner concrete persuades tensile strains and forms cracks tangential to circular radius.
It is advantageous for thick sections (say >500mm) to have late removal of formwork to decrease early thermal cracking. This is to enable more time for the centre of concrete section to cool down progressively to decrease the risk of thermal cracking. It is effective in controlling thetemperature differential across the cross section of concrete structures and decreasing the potential of internal cracking because of early thermal movement.
what is hydraulic grid line
Q. Write short notes on Impact Test? Impact test for ballast shall be carried out using Impact testing machine. The test sample shall be prepared out of ballast so as to con
Question Is it necessary joints of concrete kerbs be in line with joints in concrete carriageway ? Answer In regular practice, joints are provided in road kerbs to ca
what are the basic assumption of traffic flow model and capacity model used in signal timing design ? discuss
Explain some Important Points for Hazardous Waste The mixture rule prevents dilution of waste for the purposes of escaping RCRA regulation. Mixtures of a listed hazardous w
Sketch a curve showing the relation among dry density and moisture content for Standard Proctor test and indicate the salient features of the curve. Describe why soils are compacte
Describe the features of physical survey phase The Physical Survey (field and laboratory test) for the purpose of determination of physical and engineering properties of the ma
A masonry retaining wall of trapezoidal section with the vertical face on the earth side is 1.5 m wide at the top and 3.5 m wide at the base and is 5.0 m high. It retains a sand fi
composition of cement in cover bag should be written or not/ If written which country uses ?please specify the name ?
Finding distances in tacheometric survey
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