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Ece 2206: Civil Engineering Materials I Question Paper

Ece 2206: Civil Engineering Materials I

Course:Civil Engineering

Institution: Dedan Kimathi University Of Technology question papers

Exam Year:2012

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DEDAN KIMATHI UNIVERSITY OF TECHNOLOGY
2012/2013 ACADEMIC YEAR UNIVERSITY EXAMINATIONS
SECOND YEAR FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN CIVIL ENGINEERING
ECE 2206: CIVIL ENGINEERING MATERIALS I
Date: 14th AUGUST 2012 Time: 8.30 AM – 10.30 AM
INSTRUCTIONS:
? This paper contains FIVE questions.
? Attempt question ONE and any other TWO questions.
? Marks are shown against each question.
QUESTION 1. [COMPULSORY] (30Marks).
[a]. Outline FOUR main properties of good building stones. [8marks].
[b]. What is “preservation of building stones”? Outline how preservation of building stones is done stating THREE types of preservatives. [6marks].
[c]. The manufacturing process of good clay bricks involves FOUR major steps. Discuss these steps citing the significance of each step. [16marks].
QUESTION 2.
[a]. Discuss the hydration and hardening process that take place when water is introduced to cement. [10marks].
[b]. Discuss the main factors that contribute to the variable quality of concrete.
[10marks].
QUESTION 3.
[a]. Identify the main constituent materials in a normal concrete mix and outline their main functions. [10marks].
[b]. Discuss the merits and limitations of concrete as a construction material. [10marks].
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QUESTIONS 4.
[a]. Discuss the hand method of mixing in the production of concrete. [6marks].
[b]. Outline THREE main requirements that should be adhered to when transporting concrete. Identify the factors that may make these requirements not to be achieved.
[9marks].
[c]. Outline the main acceptable methods of handling mixed concrete from the mixer to the point of placing. [5marks].
QUESTION 5.
[a]. Discuss THREE essential requirements of aggregate for making concrete.
[7½marks].
[b]. Discuss THREE factors that influence the workability of concrete. [7½marks].
[c]. Discuss the effects of excessive clay, fine silt and dust in aggregate for making concrete.
[5marks].

Ece 2206: Civil Engineering Materials I Question Paper

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