cameroon gce intermediate level 2025 survey soil mechanics and materials 2

 

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SECTION A: MATERIALS (Answer any Two Questions)

QUESTION ONE

a) Define binders and enumerate three kinds of binders

b) What are the principal raw materials used in the manufacturing of Portland cement

c) Differentiate between quick lime and slaked lime

d) State three uses of lime in a civil engineering industry

e) Differentiate between initial and final setting time of a cement paste

QUESTION TWO

The Regional Council of your area in order to curb rural exodus has decided to come up with plans to industrialise the Region. One of these plans is the creation of a factory for the production of various building materials. As a future technician and an aspiring structural Engineer, your services were solicited to give advice on the following;

a) What do understand by the term false set of a cement paste?

b) List and define four properties of Ordinary Portland cement.

c) State three criteria used in the selection of steel for a given project

d) Explain two methods used to protect steel against corrosion

e) What are ferrous metals? List two noon ferrous metals

QUESTION THREE

a) List and define two properties of bituminous binders

b) List one similarity and one different between tar and bitumen

c) Define fresh concrete and give four of its properties

d) State the test, apparatus, procedure and aim for the determination of the setting time of Portland cement.

SECTION B: SOIL MECHANICS (Answer any one question)

QUESTION FOUR

a) What is the different between a soil profile and a soil horizon

b) State and give the property of soil which is of alto most importance to the civil engineer and a farmer

c) Define compaction and state one method of compaction

d) Figure 1 represents a sample of a test obtained after a slump test. You are required to analysis the results by stating the name and the water quantity

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