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!
Joints in Concrete Pavements:
Concrete pavements in India are of the jointed plain (unreinforced type). The following types of joints are needed in them :
(a) Transverse Contraction Joints
(b) Longitudinal Joints
(c) Expansion Joints
Transverse contractions are provided at 3.5-5.0 m spacing for relieving the tensile stress induced when the temperature of the concrete falls below the laying temperature. The modern practice is to lay the slab continuously and cut the transverse joints to a depth of 1/3rd the slab thickness by a joint cutting saw, and allow the crack to travel downwards in due course. A dowel bar is provided to transfer the load. For low volume roads, the dowel bars are omitted and the load transfer takes place by aggregate interlock. A sketch of a contraction joint is given in Figure. The joint is sealed with a sealant.
Figure: Contraction Joint
Longitudinal joints are provided on pavements which are wider than one lane to relieve warping stresses. They are also cut by joint cutting saws. Tie rods are provided to prevent the adjoining slabs from separating. The joints also need to be sealed. A sketch of a longitudinal joint is given in Figure.
Figure: Expansion Joint
Expansion joints are provided to allow for the expansion of slabs. The current practice is to provide expansion joints only at culverts and bridges. A typical expansion joint is shown in Figure.
Figure: Longitudinal Joint with Tie Bar
Q. Use of PFA and GGBS? Both PFA and GGBS are by-products of industry and use of them is ecologically friendly. Most significantly, with PFA and GBS adopted as partial replacem
what is grillege foundation and where are use
isolated footing
Explain Frame Members Effective Lengths a. Effective length is a product of an effective length factor (k) and the actual length of the column. b. k depends on the rel
Enlongations in solids based on elastic constants
What will be the structural weight per meter for IRC class 70r bridge
largest centrifugal pumps
perfect truss
Durability requirements for Concrete Even though the alkaline environment of concrete protects steel, carbonation of hydrated cement may decrease the effective protection. The
Q. Write short notes on Bulking of Sand? Volume of sand fluctuates with variations in moisture content when sand is wet then each particle sets coating of water due to surface
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