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

Stereotypes and prejudicial stereotypes, What are the differences between s...

What are the differences between stereotypes and prejudicial stereotypes? a) Stereotypes:- The perceived beliefs one forms of another person or group; however an opinion is

Matter, what is meaning of solid'' liguid'' gases?why eresers float in wate...

what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?

Explain the somatosensory system, Explain the Somatosensory System The ...

Explain the Somatosensory System The somatosensory system consists of: 12 pairs of cranial nerves, and 31 pairs of spinal nerves   All our conscious awaren

Verification of stock register , VERIFICATION OF STOCK REGISTER : A stock ...

VERIFICATION OF STOCK REGISTER : A stock register is an important component of any official establishment in which records related to purchase, use and maintenance of all the item

Explain the submucous layer, Explain the Submucous Layer This layer con...

Explain the Submucous Layer This layer consists of loose areolar connective tissue. There are lymph vessels, plexuses of blood vessels and nerves. The nerve plexus is meissner'

Metals and non metals, Observe how a metal tyre is fitted on the wheel of b...

Observe how a metal tyre is fitted on the wheel of bullock cart

Explain the secretion of aldosterone, Explain the Secretion of Aldosterone ...

Explain the Secretion of Aldosterone A minimal amount of ACTH is also needed for the secretion of aldosterone. The secretion of aldosterone is thus stimulated by: a d

Explain the composition and functions of gastric juice, Explain the Composi...

Explain the Composition and Functions of Gastric Juice In resting condition, the secretion of gastric juice is little in amount and is about 10- 15 ml. After taking each meal,

Explain skin secretions - external defence mechanism, Explain Skin Secretio...

Explain Skin Secretions - External Defence Mechanism The oil and sweat secreted by sebaceous and soporiferous glands contains fatty and lactic acids, which makes the surface of

Explain the dyspnoea, Explain the Dyspnoea Shortness of breath or dyspn...

Explain the Dyspnoea Shortness of breath or dyspnoea is a feeling of difficult or labored breathing that is out of proportion to the patient's level of physical activity. In ot

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