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
Example for Productivity Analysis and Improvement An excavator with a bucket capacity of 3-yd 3 has a standard production rate of 2,160-yd 3 for an 8-hour day. The job site
Explain the term - Characteristic Strength The strength of a material below which not more than 5 percent results are expected to fall is considered as the characteristic stre
When a dam is to be built, a diversion tunnel is usually bored by solid rock next to the dam site to bypass the dam construction site. The dam is built while the river flows by the
given A,B,C,and D are four plotted points at 2 centimeter apart and their ground reduced levels are 57.5 meter 63.2 meter 68.2 meter and 59.2 respectively.it is required to draw co
slope deflection with settlement
Snow weight In spatial trusses, Snow load is much more important than building. As in buildings snow load is only a small proportion of the overall weight of the building, it w
spiral curves?
A partially saturated soil from an earth fill has a natural water content of 19% and a bulk unit weight of 19.33 kN/m 3 . Suppose the specific gravity of soil solids as 2.7, comput
A retaining wall with a smooth vertical back, 4.5 m high, retains a dry cohesionless backfill level with the top of the wall. γ = 18.6 kN/m 3 and φ = 30°. The backfill carries a u
Ductile iron pipes vs. mild steel pipes as pressurized pipelines For water main pipe size less than 600mm, ductile iron is generally used since internal welding for steel pipe
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