Gypsum

CHAPTER-1 INTRODUCTION Concrete a manmade material widely and greatly used in construction Industry. This concrete is a mixture of adequate proportion of cement, water and aggregate. Hardening (or) strength of this material is obtained by the chemical action between water and cement. As the time increases the stronger it grows (i.e strength of concrete is directly proportion to its age).The durability, strength, versatility and other characteristics of concrete depends upon the properties and…

Neither Dale Carnegie nor the publishers, Simon and Schuster, anticipated more than this modest sale. To their amazement, the book became an overnight sensation, and edition after edition rolled off the presses to keep up with the increasing public demand. Now to Win Friends and InfEuence People took its place in publishing history as one of the all-time international best-sellers. It touched a nerve and filled a human need that was more than a faddish phenomenon of post-Depression days, as…