Engineering Jobs   »   Govt. Job Notifcation   »   Concept Booster Civil

Daily Concept Booster Civil Engineering : Fineness of Cement

Fineness of Cement –
– The Fineness of Cement is measured by :

(a) Sieve Method – In this method, 100 gm cement is taken and sieved in sieve no-9 (90 micron) for 15 minutes and residue on the sieve is measured. The percentage of residue by weight on the sieve is given below.

Type of Cement Percentage of residue by weight
1. RHC (Rapid hardening Cement) 5
2. PPC (Portland Pozzolana Cement) 5
3. OPC (Ordinary Portland Cement) 10

(b) Air permeability Method – In this method, Blaine’s air permeability apparatus is used to measure fineness of cement. It is represented in terms of specific surface area per unit weight.

Type of Cement Specific Surface Area (cm²/gm)
1. SSC (Super Sulphate Cement) 4000
2. RHC (Rapid hardening Cement) 3250
3. PPC (Portland Pozzolana Cement) 3000
4. OPC (Ordinary Portland Cement) 2250

Boost your preparation with the all-new Concept Booster Series by Adda247 Engineering Jobs, this series aims to target all the important engineering exams such as SSC JE 2022, GATE 2022, ESE 2022, and many more. Please reach out to us with your feedback in the comment section.Daily Concept Booster Civil Engineering : Fineness of Cement |_40.1

Sharing is caring!

Thank You, Your details have been submitted we will get back to you.

Leave a comment

Your email address will not be published.