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

Passenger conveyors, Passenger Conveyors: Passenger conveyors are used...

Passenger Conveyors: Passenger conveyors are used at locations where a large concentration of passengers has to be moved from one place to another. Escalators are used to conv

Structure, what is the different between axial force and shear force?

what is the different between axial force and shear force?

Cover depths of jacking pipes, Question While pipe jacking or microt...

Question While pipe jacking or microtunneling , it is usually accepted that cover depths of jacking pipes cannot be also shallow as in less than 2D where D is the diameter o

Joints in concrete pavements, Joints in Concrete Pavements: Concrete ...

Joints in Concrete Pavements: Concrete pavements in India are of the jointed plain (unreinforced type). The following types of joints are needed in them : (a) Transverse C

Show the design of howe truss, Q. Show the Design of Howe truss? Design...

Q. Show the Design of Howe truss? Design of Howe truss is the opposite to that of Pratt truss in that the diagonal members are slanted in the direction opposite to that of Prat

Stone soling - road pavements, Stone Soling: One of the early practic...

Stone Soling: One of the early practices in road construction was to provide a stone soling 150-225 mm in thickness. The stones are laid by manual labour, and stone spalls ar

Cement Sand Plaster, How to use plaster cement in sand?  Cement sand pl...

How to use plaster cement in sand?  Cement sand plaster is a layer of cement & sand mortar that is applied over walls made of brickwork, cement block work, RCC walls and RCC co

Explain gauge conversion, Q. Explain Gauge Conversion? All the advanced...

Q. Explain Gauge Conversion? All the advanced countries of the world have recognized the need for uniformity of gauge. There are a number of problems that have cropped up on th

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