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
properties of coarse and fine aggregates
finding the mean ,mode and mediam
High temperature in laying bituminous pavement Generally bituminous materials are also broadly categorized into two types viz bitumen McAdamsand hot-rolled asphalts. At the ti
i require a workquestion #Minimum 100 words accepted#
30,000-yd 3 of banked soil from a borrow pit is stockpiled before being trucked to the jobsite. The soil has 28% swell and shrinkage of 18%. The final volume of the compacted so
Function of reinforced concrete infill in marine piling system of steel tubular pile with reinforced concrete infill Reinforced concrete is designed to fill void space inside
In a curved prestressed bridge , how ought to the guided bearings in piers of curved region be oriented with respect to a fixed bearing in abutment?
Define Hardness - Chemical Characteristics of Water Caused by any polyvalent cations (mainly Calcium and Magnesium). Expressed as mg/l as CaCO 3 . Causes precipitates with soap
Define Design Aspects of Pot Bearing? Basic elements of a POT bearing are: - POT or a shallow cylinder - An elastomeric pad - A set of sealing rings - A piston P
A load of 3000 kN is being taken by a square column footing. Side of the column is 3 m, footing rests on a silty soil with a Poisson's ratio = 0.3. Modulus of elasticity of the soi
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd