CE 445 Concrete Making Materials
Credit Structure: (3-0)3
Catalog Description:
Properties and types of cements and aggregates. Methods and
standards of mixing water. Chemical and mineral admixtures.
Course Objectives:
Concrete is the most widely used construction material in
the world lt literally forms the basis of modern society. There
is scarcely any aspect of daily life which does not depend directly
or indirectly on concrete. Therefore, the properties of this material
need to be known very well. In order to know and realize the importance
of properties and the behavior of concrete, the properties of
the materials that compose the concrete need to be known as well.
The CE students of METU meet with cement and aggregate to a certain
extent in their second year course, CE 244 Materials of construction,
which includes many other construction materials such as metals,
wood, clay products, building stones, lime, gypsum, etc. Due to
the time limitation, such aspects as quality of mixing water and
the types of admixtures used for concrete are not taught in CE
244. There is no other course for the CE students related to the
concrete making materials during their BS program. During their
brief study of cement and aggregate in the second year, the students
usually do not realize the importance of these materials and they
graduate without any further knowledge of their characteristics.
Therefore, this course on "Concrete-Making Materials"
is planned to furnish the fourth year students the necessary information
on cements, aggregates, water and admixtures. Those students who
will have the oppurtunity to take such a course will not only
learn these materials but also properly to evaluate their importance
from the technical and economic viewpoints. Furthermore, the some
students will have an opportunity of judging whether or not they
want to continue their MS studies in the field of construction
materials.
Prerequisites:
None
Textbook(s):
None
Reference(s):
S. Popovics, “Concrete-Making Materials”, McGraw
Hill Company, 1979.
Syllabus:
1. Cements: Introduction, history, oxide composition and the
raw materials and proportioning manufacture of portland cements.
2. Compound composition of portland cements and methods for their
determination, hydration characteristics of major compounds.
3. Effects of compound composition upon the characteristics and
types of portland cements, chemical analysis and the significance
of the items determined .
4. Fineness, normal consistency, setting time, false set, quick-set,
soundness, heat of hydration, strength, gel-space ratio and other
properties.
5. Hydraulic cements other than standard portland, ASTM and Turkish
Standards, storage of cements.
6. Aggregates: Introduction, properties of freshly mixed concrete
and hardened concrete influenced by aggregate properties.
7. Various classifications for aggregates, sampling and reducing
the samples to testing size, shape and surface texture, significance
of those properties.
8. Gradation, grading curves, fineness modulus, ASTM and Turkish
grading limits, blending of two or more aggregates, maximum aggregate
size, significance of grading and max. aggregate size.
9. Physical properties of aggregates such as moisture states,
absorption, specific gravity, unit weight, porosity, soundness
and thermal characteristics, Significance of those properties.
10. Mechanical properties of aggregates such os abrasion resistance,
strength, toughness, hardness. deleterious substances in aggregates
such as, organic impurities, very fine particles, clay lumps etc.
11. Significance of the presence of deleterious substances and
standard limits, chemical properties due to the reaction of the
reactive components.
12. Water: Introduction, quality of mixing water, effect of impurities,
tolerable concentrations of impurities, use of various kinds of
water as mixing water, methods for assessing suitability of mixing
water, related standards, curing and washing water.
13. Admixtures: Introduction, classification, air-entraining admixtures,
water-reducing and set-retarding admixtures accelerating admixtures
Mechanisms of action, testing methods and standard limits for
conformance.
14. Pozzolans, fly ash and silica fume, granulated blast furnace
slag, physical and chemical properties, testing methods and required
limits in the standards.
Homeworks, Quizzes, Projects:
None
Computer Usage:
None
Laboratory Work:
None
Category Content:
Mathematics and Basic Sciences: None
Engineering Design: None
Engineering Sciences: 2.5 credits
Humanities & Social Sciences: None
Departmental: 0.5 credits
Instructors:
Turhan Erdogan