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

Exploration of resources, Exploration of resources Exploration of re...

Exploration of resources Exploration of resources  involves complex techniques which depend on the physical, chemical and biological properties of a particular resource. Now

Explain brain or detector - mechanism of colour perception, Explain Brain o...

Explain Brain or Detector - Mechanism of Colour Perception The fibre identification of colour takes place in the brain. If any of these four pre-requisites are not present, the

What is a floodplain, What is a floodplain? If a river tends to flood,...

What is a floodplain? If a river tends to flood, the most practical solution might be to designate a more or less flat area along the river as the "floodplain". This Area is p

Explain the functions of inner ear, Explain the Functions of Inner Ear ...

Explain the Functions of Inner Ear The inner ear plays an important function in the detection of sound. In the last section, we left middle ear function at the point where the

Dietary requirement during fever and infection, Dietary Requirement during ...

Dietary Requirement during Fever and Infection: During fever, there is a break down of tissue proteins, and water and salts are  lost. The BMR increases with the rise of ever

Explain the colour blindness, Explain the Colour Blindness Normal indiv...

Explain the Colour Blindness Normal individuals possess three cone pigments viz. red, green and blue which are referred to as tri-chromates. Colour blindness refers to the part

Wiring a plug to an appliance, WIRING A PLUG TO AN APPLIANCE In the...

WIRING A PLUG TO AN APPLIANCE In the previous activity, you worked out the operating current of different electrical equipment/appliances and suggested proper fuse and plug

How does our body know ''what to do'', How does our body know 'what to do' ...

How does our body know 'what to do' Feeling, knowing, doing anything depends on special structures called nerves. Neuronal cells in the body act as various messengers according

Define contribution of eosinophils, Define Contribution of Eosinophils ...

Define Contribution of Eosinophils They are specifically equipped to deal with a lot of parasites (all helminth worms). The coating of helminthes and some complement components

Explain the filiform papillae, Explain the Filiform papillae These are ...

Explain the Filiform papillae These are long and slender and are the smallest of the three types of papillae. They are found to be most numerous on the edges and anterior two t

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