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

Calculate the invert elevation of the sewer pipe, 1. The center line elevat...

1. The center line elevation of the proposed roadway at station is 345+25.50 is 327.36-ft.   The existing ground top of cut elevation (ft) is most nearly: 2. A design engineer c

Determine the limit states of collapse, Determine the Limit States of Colla...

Determine the Limit States of Collapse Those limit states which point out the failure or collapse of a structure based on certain critical conditions are known as limit states

Design nominal reinforcement to piles, Question Is it true that there i...

Question Is it true that there is no essential to design nominal reinforcement to piles. Answer In BS8110 and BS5400 Pt.4, they need provision of nominal reinforce

Measure the stress increment, A raft of size 4 m × 4 m carries a uniform lo...

A raft of size 4 m × 4 m carries a uniform load of 200 kN/m 2 . Using the point load approximation with four equivalent point loads, measure the stress increment at a point in the

Solid mensuration, the base of an isosceles triangle and the altitude is dr...

the base of an isosceles triangle and the altitude is drawn from one of the congruent sides are equal to 18cm and 15cm , respectively . Find the lenghts of the sides of the triangl

Phase, Each physical homogeneous type (solid, liquid orvapour) is a phase. ...

Each physical homogeneous type (solid, liquid orvapour) is a phase. Two or three phases may coexist.  e.g. Ice and water at 0 o C.  Mixtures of gases (e.g. Air) can only be

Choice of pavement - road pavements, Choice of Pavement: The advantag...

Choice of Pavement: The advantages and drawback of the two types of pavements are summarized in Table, to enable a choice to be made. Table : Advantages and drawback of

Evlaute width and depth for stable alluvial canals, Q. Evlaute width and de...

Q. Evlaute width and depth for stable alluvial canals? Lacey originally evolved width and depth formulae for stable alluvial canals. These were the following.  P = 4.836 Q 1

Importance of tendons in post-tensioned members, Importance of Tendons in p...

Importance of Tendons in post-tensioned members Tendons in post-tensioned members are subjected to different amounts of stresses (among themselves) due to following reasons.

What are dissimilar applications of draglines, Question: What are dissi...

Question: What are dissimilar applications of draglines, backhoes and shovels? Answer: An excavator is distinct as a power-operated digging machine and it includes di

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