Most aggregate size advantage structures, Civil Engineering

Assignment Help:

Question
Design of concrete structures, normally most aggregate sizes are adopted with scopes from 10mm to 20mm. Does an increase of most aggregate size advantage structures?

Answer
To answer this query, let's consider the example of a cube. Surface area to volume ratio of a cube is 6/b that b is the length of cube. This implies that surface area to volume ratio reduces with an increase in volume. Then, when size of maximum aggregate is improved, surface area to be soaked by water per unit volume is condensed. Consequently, water requirement of concrete mixes is reduced accordingly so water or cement ratio can be lowered, resulting in a rise in concrete power.

Though, increase of aggregate size is also accompanied by effect of reduced contact areas and discontinuities formed by these larger sized particles. In general, for utmost aggregate sizes less than 40mm, effect of lower water requirement could offset drawbacks brought about by discontinuities as recommended by Longman Scientific and Technical in 1987.


Related Discussions:- Most aggregate size advantage structures

Fore bearing and back bearing, write a c program to calculate the included ...

write a c program to calculate the included angles for given fore bearing and back bearing.

Explain about noise absorptive materials, Q. Explain about Noise absorptive...

Q. Explain about Noise absorptive materials? The fundamental mechanism of noise absorptive material is to change the acoustic energy into heat energy. Amount of heat produced i

Design of prestressed concrete pipes, Design of prestressed concrete pipes ...

Design of prestressed concrete pipes The design of prestressed concrete pipes should cover the following five stages : (a) Circumferential prestressing, winding with or wit

Boundary ratio of weight of hammer to weight of pile, Question If n a n...

Question If n a number of codes, they boundary ratio of weight of hammer to weight of pile for pile driving. What will be the key reason for this? Answer As a hamm

Bituminous macadam, Bituminous Macadam: Bituminous Macadam (BM) is a ...

Bituminous Macadam: Bituminous Macadam (BM) is a base course in which coarse aggregates are mixed with a bituminous binder. The mix is open-graded with 20-25 per cent voids.

#transportation engineering sessional.., #how the result of DETERMINATION O...

#how the result of DETERMINATION OF THE 10 PERCENT FINES value can be interprited?

IRC class 70R, What will be the structural weight per meter for IRC class 7...

What will be the structural weight per meter for IRC class 70r bridge

Assignment, I need to find support reactions at O for the beam with a distr...

I need to find support reactions at O for the beam with a distributed load, a 6 kN moment couple at A and a 3 kN axial load as shown in picture.

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