Cement and concrete, Science

Assignment Help:

Cement and concrete

Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.

 


Related Discussions:- Cement and concrete

What is the earths core made of, What is the earths core made of? Ans) ...

What is the earths core made of? Ans) The outer earth core is liquid and the inner is solid. Both parts are of alloy of two metals - iron and nickel, permitting the rise of the

Food fads, Food fads: You may have picked up the idea from your family ...

Food fads: You may have picked up the idea from your family or friends  that certain combinations of food can  be dangerous  for your  health. For example,  fish and milk or ra

Precautions in nonionising radiations, Precautions : The following precaut...

Precautions : The following precautions should be taken while using UV lamps: 1) TJV lamps must always be properly shielded. 2)Wear approved goggles when working with or clo

Decline of the bronze age civilisation, Decline of the Bronze Age Civilisat...

Decline of the Bronze Age Civilisation: We find that the great developments in production methods that came with the rise of early cities lasted only f6r a few centuries. The

LIBRARY, purpose of different levels of description of an entry

purpose of different levels of description of an entry

Calculate the protein intake, Answer the following questions. Show all wor...

Answer the following questions. Show all work. 1 . Carbohydrates = _____ kcals/g Proteins = _____ kcals/g Fats= _____ kcals/g Alcohol= _____ kcals/g Nitrog

Intrusion into the nitrogen cycle, Intrusion into the Nitrogen Cycle: ...

Intrusion into the Nitrogen Cycle: Human intervention can disturb  the nitrogen cycle. Let us see how. When we grow and harvest crops. there is loss of  nitrogen from the soi

Deserts, ecological characteristics of deserts

ecological characteristics of deserts

Which type of rock is critical for the formation of geysers, Which type of ...

Which type of rock is critical for the formation of geysers? Liquid rock is required for geysers to form in the form of what is known as magma - which is the geological name fo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd