Concrete structure be entirely free of expansion joints, Civil Engineering

Assignment Help:

Question
Would a concrete structure be entirely free of expansion joints and contraction?

Answer
Consider that concrete structure is not subject to problem of disparity settlement. For contraction joints, it might be possible designing a concrete structure without contraction joints. Using sufficient steel reinforcement to spread equally crack width over span length of structure, it might achieve requirement of minimum crack width and cause no undesirable impact to aesthetics of structure. Though, it follows that amount of reinforcement required is higher than that with sufficient contraction joints.

For expansion joints, consequence of not providing such joints could be complex to cater for. As in, a concrete structure has coefficient of thermal extension of 9x10-6 /C and a Young's modulus of 34.5kN/mm2. With incensement of temperature of 20oC and it is confidential to free expansion, then structure is subject to axial pressure of 6.21MPa. If structure is especially slender as in concrete carriageway, buckling could occur. As a result, structure has to be designed to get up these thermal stresses if development joints are not offered. Still, for water retaining structures, mainly of them are not affected by weather conditions as they are insulated from water they have internally and soil backfill that surround them. So, it is expected that smaller quantity of thermal movement will happen when compared with regular exposed concrete structure. Therefore, development joints could be lost in this case with view that compressive stress induced by thermal expansion toughens structure to limit increase of tensile stress.


Related Discussions:- Concrete structure be entirely free of expansion joints

Explain standard penetration test used in soil exploration, Explain the "St...

Explain the "Standard Penetration Test" used in soil exploration. List the information that can be obtained by the test when made in (a) clay, (b) sand. Comment on the correctio

Critical-depth relationship, If y1 and y2 are alternate depths of a rectang...

If y1 and y2 are alternate depths of a rectangular channel show that Yc³ =2y1²y2²/(y1+y2) Also specific energy E = y1²+y1y2+y2²/(y1+y2)

Advantages and disadvantage of using timber fenders, Question What are ...

Question What are advantages and disadvantage of using timber fenders , plastic fenders and rubber fenders ? Answer Timber fenders - They are low in power and a

Levelling procedure, how to carry on leveling using dumpy level????????????...

how to carry on leveling using dumpy level????????????

Compression vs tension, Behaviour of struts in compression compared with th...

Behaviour of struts in compression compared with the behaviour of struts in tension? Also do you know a credible source that I can reference?

Calculate the aisc lrfd strength criteria, Check if the given beam and load...

Check if the given beam and loading satisfy the AISC LRFD strength criteria. The beam section is a W 16*31 of A36 steel and it is laterally supported at the ends at the load points

Area bouded by curves, find the area bounded by the curve y=3x(x-2)^2 and t...

find the area bounded by the curve y=3x(x-2)^2 and the x-axis

Digit of cells for concrete box girder bridges, Question How does an engine...

Question How does an engineer determine digit of cells for concrete box girder bridges ? Answer If depth of a box girder bridge exceeds 1/6 or 1/5 of bridge width, then it is o

Concrete, What is Polymer Concrete?

What is Polymer Concrete?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd