Portland Pozzolana Cement (PPC)

PPC Grade

PPC at PARASAKTI CEMENT is produced Conformed to the Indian Standards Specifications as per IS: 1489 (Part 1) - 1991 (Flyash Based)

A hydraulic cement prepared by grinding the mixture consisting of an intimately and uniform blend of Portland clinker and pozzolana with the suitable addtion of gypsum or an intimate and uniform blending of Ordinary Portland Cement and fine pozzolana material.

The Cement mortar that is prepared in 1: 3 proportions using standard sand (as per IS:650) and tested at standard laboratory conditions and should gain the compressive strength of not less than 33 MPa after 28 days,

  • Produces less heat of hydration and offers resistance to the attack of aggressive waters.
  • Higher fineness Improves the permeability of the concrete and hence durability
  • Increases the resistance to corrosion of reinforcement
  • Improves the pore size distribution & Reduces leaching of calcium hydroxide liberated during cement hydration thus reducing the leaching.Reduces the micro cracks at the transition zones

Comparative Analysis Of Parasakti Cement with BIS Specifications PPC

Minimum Compressive Strength at

Description IS Requirement Parasakti Results
3 Days (72 ± 1hour) Not less than 16 MPa 22-25 MPa
7 Days (168± 2 hour) Not less than 22 MPa 33-36 MPa
28 days (672±4 hour) Not less than 33 MPa 52-55 MPa

Setting Time in Minutes

Description IS Requirement Parasakti Results
Initial Setting time Not less than 30 Minutes 130-160 Minutes
Final Setting time Not more than 600 Minutes 230-260 Minutes

Fineness

Description IS Requirement Parasakti Results
By Blaine method Not less than 300 M2/Kg 330-350 M2/Kg

Soundness

Description IS Requirement Parasakti Results
Le-Chatlier method Not more than 10mm 1-2 mm
Autoclave method Not more than 0.80 percent 0.02 - 0.15 %
Drying Shrinkage Not more than 0.015 percent 0.10%

Applications :

Used for Hydraulic Structures, Mass concrete structures like Dams, Bridge piers and thick foundation, Marine structures, Sewers and Sewage disposal works etc.

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