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

Why are steel plates inserted inside bearings, In designing of elastomeric ...

In designing of elastomeric bearings, why are steel plates inserted inside Bearings?

Guidelines for selection of site, Guidelines for Selection of Site: Th...

Guidelines for Selection of Site: The following are some of the guidelines for selecting the site of a bridge : (a) A site which is on a straight reach of the river is pref

Resultant pull, two locomotive moving on opposite bank of a canal can pull ...

two locomotive moving on opposite bank of a canal can pull a vessal parallel to the banks by the means of two rope.the force in the ropes are 20kN and 24kN while the total angle be

Show the settlement due to excavation, Q. Show the Settlement due to Excava...

Q. Show the Settlement due to Excavation? If  an excavation is made in a sandy soil,  the structure founded near the excavation will be affected and it will cause extra settlem

Explain the driver expectancy, Explain the Driver Expectancy A fundamen...

Explain the Driver Expectancy A fundamental component of driver information processing and perception. Drivers operate with a set of expectancies, e.g.: 1) Freeway exits wil

Prestressed concrete poles, Prestressed concrete poles In the past deca...

Prestressed concrete poles In the past decades, prestressed  concrete poles have become popular and have replaced the traditional poles made of timber, steel or reinforced  con

Jetties, JETTIES: A jetty is a structure projecting into the sea from ...

JETTIES: A jetty is a structure projecting into the sea from the shore line for receiving ships. They are made of RCC trestles with a deck to accommodate railway track and roa

Maintenance of bituminous roads, Maintenance of Bituminous Roads: The...

Maintenance of Bituminous Roads: The common defects noticed in a bituminous road are : potholes cracks rutting corrugations shoving stripping and l

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