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

Seive analysis, what is sieve analysis? expalin its procedure.

what is sieve analysis? expalin its procedure.

Determine the flow rate from the dewatering well, A construction project in...

A construction project involves excavation below grade. A 24 inch diameter dewatering well is installed from grade (EL 586) to 80 ft below grade to lower the water table. Soil bori

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

Water tretement, define scale and sludge and mention the scale and sludge f...

define scale and sludge and mention the scale and sludge forming substance and explain the prevention methods

Explain dielectric breakdown, Explain Dielectric breakdown Dielectric ...

Explain Dielectric breakdown Dielectric breakdown means failure or deterioration of the dielectric material because of various reasons.

High and narrow beams, Question Give a reason that why are high and na...

Question Give a reason that why are high and narrow beams not desirable in concrete piers? Answer Supported on past experience in other, high and narrow beams after

Survey, how to draw longitudinal profile

how to draw longitudinal profile

Cumulative distribution function - poisson distribution, Cumulative distrib...

Cumulative distribution function - Poisson distribution: Find the cdf of Y = X 1 , + X 2 where X I and X 2 independently follow Poisson distribution with parameters λ l an

Tests on bitumen, Tests on Bitumen: The following tests are conducted...

Tests on Bitumen: The following tests are conducted on bitumen to find its suitability as a road binder : (a) Penetration test (b) Softening Point test (c) Flash Poi

Distinguish among active and passive earth pressure, Distinguish among  'ac...

Distinguish among  'active' and 'passive' earth pressure. Describe clearly Rebhann's graphical construction method to evaluate the earth pressure on a retaining wall. What are t

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