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

Methods of contouring by grid points, the elevations of grid points for an ...

the elevations of grid points for an area as follows: 1 2 3 4 5 6 7 8 F 690 709 726 732 735 740 743 747 E 696 715 729 736 740 737 739 740 D 702 723 733 742 737 737 745 747 C 707 72

Shear force, what is shear failure and shear force please explian?

what is shear failure and shear force please explian?

Major bridge and important bridge, Major bridge - Major bridge is one of wh...

Major bridge - Major bridge is one of which has a total linear waterway of 18 m or more for multiple span and total linear water way of 12 m or more for single span. Important b

Design the transverse shear reinforcement, Details of a simply-supported be...

Details of a simply-supported beam are given in Figures (a) and (b). Note that the dead load, g includes the self weight. Design the transverse shear reinforcement in ter

Open channel, design of irrigation channel permissible velocity table

design of irrigation channel permissible velocity table

Determine the stage of cracking moment of pre-stress, Determine the stage o...

Determine the stage of Cracking moment of pre-stress  At the stage of transfer of pre-stress in the pre-stressed beam element, only the pre-stressing force and the self weight

Explain the variable conditions of river flow - bridges, Explain the Variab...

Explain the Variable Conditions of River Flow and Health State? The variable conditions of river flow and health state of structure demands constant supervision.  Although scou

State the term - total loss of prestress, Total loss of prestress The ...

Total loss of prestress The total amount of losses of prestresses may be accounted for in a prestressed concrete member by adding different losses which may take place for tha

Overhanging beams, Do we take the whole length (including the over hanging ...

Do we take the whole length (including the over hanging portion when we say the "whole span" of th beam ?

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