shanthi

• Nov 24th, 2011

 

The fineness of cement is no.of fine particles present in one surface area.

ven civil

 Profile Answers by ven civil 

• Mar 22nd, 2012

 

Fineness of cement is nothing but number of particles in cement and its the early setting time of cement.more the fineness less the setting time .

nikhil verma

• Mar 25th, 2012

 

fineness means surface area per kg of cement.

de banerjee

 Profile Answers by de banerjee 

• Aug 20th, 2012

 

specific surface expressed as total surface area in sq. cm/gm. of cement.

two tests are there ...

1)sieve test

2)air permeability test

boopathiraja

• Aug 30th, 2012

 

Sieve Test.

krishna svp

• Sep 2nd, 2012

 

Total surface area of all particles in one gram of cement.

vaibhav jain

• Oct 10th, 2012

 

Fineness of cement can be determine by Sieve analysis test.

shahanth

 Profile Answers by shahanth Questions by shahanth

• Jan 13th, 2013

 

Fineness is tells about the particle distribution of cement. Fineness of is cement expressed in terms of total surface area of unit weight of of cement.

Tests

1) Sieve analysis ------->I.S.sieve NO.9 is used to test----->permissible limit for OPC is not more than 10% retained on I.S.SIEVE NO.9

2) Air permeability tests----->most commonly used in India is "BLAINE AIR PERMEABILITY TEST"

SIGNIFICANCE
More the fineness ---->more water demand---->more surface area---->more rate of hydration---->more heat of hydration----->more strength developed at early stages

sadabraj singh

• Jul 19th, 2014

 

Fineness is very important characteristics of cement & is described as specific surface of all the particles i.e the summation of surface areas of all the cement grain in one gram of cement. 

jeetendra kumar pandey

• Sep 19th, 2014

 

To calculate fineness of cement sieving are done sieve number 9 and size of sieve 90 micron sieve

pushp raj

• Oct 4th, 2014

 

fineness of cement is property of cement that indicate particle size of cement and specific surface area. and indirectly effect heat of hydration. if fineness is more then heat of hydration should be more

shakeel khan

• Feb 19th, 2015

 

significance : its more costly ...

chaitu

• Apr 20th, 2015

 

Grounding of cement particles into different smaller or finer particles ... simply making smaller particles...:)

Abdul Rehman

• May 5th, 2015

 

The degree of fineness of cement is a measure of the mean size of grains of cement.

Lakshmi narasimman

• May 29th, 2017

 

Fineness of cement: Blaine air permeability test - The fineness of cement is measured as a specific surface by observed time taken for a fixed quantity of air flow through compacted cement bed specified dimension and porosity, the fineness of cement value is directly proportional to the time, unit is m2/kg or cm2/gm please refer BSEN code 196-6 2010

Meghana

• Dec 1st, 2017

 

Fineness represents the surface area of the cement available for chemical reaction with water i.e., heat of hydration

Ganesh karthikeyan

• Mar 26th, 2018

 

Fineness of cement indicates the practical size of cement and specific surface area.
Fineness means the surface area of cement is available for chemical reaction with water (heat of hydration)

sathwika

• Jan 29th, 2019

 

The degree of fineness test of cement is the measure of means size of the grinds in it.