Suryakanta When a Portland Slag cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 12269. The fineness value of PSC when tested by Blaine’s air permeability method shall not be less than 225 m2/kg. The expansion value (i.e. soundness) of unaerated cement when tested by Le-Chaelier method shall … Read more
When a calcined clay based Portland Pozzolana cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 1489-Part 2. The fineness value of fly ash based PPC when tested by Blaine’s air permeability method shall not be less than 300 m2/kg. The expansion value (i.e. soundness) of unaerated … Read more
When a fly ash based Portland Pozzolana cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 1489-Part 1. The fineness value of fly ash based PPC when tested by Blaine’s air permeability method shall not be less than 300 m2/kg. The expansion value (i.e. soundness) of unaerated … Read more
When a RHPC (Rapid Hardening Portland cement) is tested for its physical requirements, then it must satisfy the following specifications given by IS 8041. The fineness value of RHPC when tested by Blaine’s air permeability method shall not be less than 325 m2/kg. The expansion value (i.e. soundness) of unaerated cement when tested by Le-Chaelier … Read more
When a 53 grade ordinary Portland cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 12269. The fineness value of 53 grade OPC when tested by Blaine’s air permeability method shall not be less than 225 m2/kg. The expansion value (i.e. soundness) of unaerated cement when tested … Read more
When a 43 grade ordinary Portland cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 8112. The fineness value of 43 grade OPC when tested by Blaine’s air permeability method shall not be less than 225 m2/kg. The expansion value (i.e. soundness) of unaerated cement when tested … Read more
When a 33 grade Ordinary Portland cement is tested for its physical requirements, then it must satisfy the following specifications given by IS 269. The fineness value of 33 grade OPC when tested by Blaine’s air permeability method shall not be less than 225 m2/kg. The expansion value (i.e. soundness) of unaerated cement when tested … Read more
The role of a consultant is not to find faults but to suggest and implement suitable remedial measures and to assist in achieving quality workmanship during the course of execution. Consultants generally follow the following checklist to ensure the quality of the cement concrete pavement during the time of construction. Ensure that mix design is … Read more
Phase problems are very important in soil engineering. Below are given most commonly used formulas to solve problems related to weight volume calculations. The notations used in these formulas are as follows, γb = Bulk density of soil mass γw = Density of water γsat = Saturated density γsub = Submerged density G = … Read more
The international Bureau of Weights and Measures serve as a depository for the primary international standards and as a laboratory for certification and inter comparison of national standard copies. It is based in Sevres, France. In 1960, the SI system was built upon the metre-kilogram-second system, which has seven basic units. They are: Metre: (Unit … Read more