The word “ cement “ traces to the Romans, who used the term opus caementicium to describe masonry resembling modern concrete that was made from crushed rock with burnt lime as binder. In the most general sense of the word, CEMENT is a binder, a substance that sets and hardens independently, and can bind other materials together. To study the setting of mixture of cement with sand, lime and fly ash with respect to time and strength. Last but not the least I would like to thank my classmates who have helped me a lot. Then I would like to thank my parents and friends who have helped me with their valuable suggestions and guidance has been helpful in various phases of the completion of the project. , whose valuable guidance has been the ones that helped me patch this project and make it full proof success his suggestions and his instructions has served as the major contributor towards the completion of the project. Then I would like to thank my physics teacher Mr. Primarily I would thank God for being able to complete this project with success. Signature of external examiner Signature of chemistry teacher …………( Subject Teacher ) during the year 2014-15 in partial fulfillment of chemistry practical examination conducted by AISSCE, New Delhi. This is to certify that Ayashkant Mishra, a student of class XII-A has successfully completed the research on the below mentioned project under the guidance of Mr. Chemistry Investigatory Project (Class 12 ,CBSE)
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