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

State the volume change from the plastic limit, The plastic limit and liqui...

The plastic limit and liquid limit of a soil are 33% and 45% respectively. The percentage volume change from the liquid limit to the dry state is 36% of the dry volume. Likewise, t

Doors and windows, important considerations in case of doors and windows

important considerations in case of doors and windows

#high way engineering about road pavements.., what is the function of longi...

what is the function of longitudinal joints in concrete road pavements?

Joint continuity influenced by inclined bridge deck, Q. Joint continuity in...

Q. Joint continuity influenced by inclined bridge deck? Bearings are generally designed to sit in a horizontal plane so as to avoid the effect of extra horizontal force and une

Keywords of road pavements, Keywords of Road Pavements: Pavement : T...

Keywords of Road Pavements: Pavement : That part of a road which structurally supports the vehicles travelling on a road. Flexible Pavement   : A layered system of pave

Design, what is the procedure to design the beam and column?

what is the procedure to design the beam and column?

What do you mean by guide bunds, Q. What do you mean by Guide bunds? Gu...

Q. What do you mean by Guide bunds? Guide bund may be given an elliptical shape separation of flow can be avoided better with such an alignment. Alternatively straight parallel

Theory on the horizontal reactions of portal frames, Determine the horizont...

Determine the horizontal abutment reaction of a rectangular portal frame under increasing central concentrated load

Machanics, write a short on vector representation of force(addition and sub...

write a short on vector representation of force(addition and substraction )

How to calculate the combined stresses, Compute the stresses at top and bot...

Compute the stresses at top and bottom fibers in a simply supported pre-stressed concrete beam with a rectangular cross section, 250 mm wide and 450 mm deep, as shown in Figure, at

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