Engineered Concrete: Mix Design and Test Methods, Second Edition

Engineered Concrete: Mix Design and Test Methods, Second Edition

Irving Kett

Preference :

The purpose of this book is to familiarize civil engineering and technology students with two of
the most important materials of construction, portland cement (PC) and portland cement concrete
(PCC). People frequently make the mistake of using these terms interchangeably. The book aims
to assist students in gaining an understanding of PC and PCC through the physical handling and
testing of these materials in the laboratory environment. While the book was primarily written for
use at the college level, it also may serve as a practical guide for the graduate engineer and laboratory
technician.
The body of this book is divided into several sections. The first explains how concrete batches
are designed, mixed, and measured for various consistencies in a special section entitled Mix Design
Procedures. Section II details the tests of the primary component materials of concrete other than
water, namely portland cement, aggregates, and mortar. Section III includes some of the fundamental
concrete testing procedures for different strength parameters in conformity with the standards of
the American Society for Testing Materials (ASTM). There probably will never be enough laboratory
time to complete all of the test procedures, even in a 15-week semester.
The testing procedures included herein are intended to accurately reflect the specific ASTM
designations, sometimes with modifications dictated by the inherent time constraints of a school
laboratory. Therefore, in certain cases, such as in securing the specific gravities and absorption of
aggregates, modifications were introduced to fit the usual 3-hour laboratory module. Where the
particular ASTM method permits alternate procedures, only the one deemed more applicable to the
teaching situation was chosen.
The unique property of all products utilizing hydraulic cements is the interval required to obtain
test specimens and its time sensitivity. For this reason considerable time must elapse between
specimen preparation and testing. This complicates the scheduling process when planning a course
in portland cement concrete and makes this laboratory unique. Sample course outlines for both a
10-week academic quarter and a 15-week semester are included in Appendix F. It is recommended
that the 5 additional weeks in the semester module be utilized for additional testing on aggregates,
cement, and mortar. The same number of periods are shown to be devoted to portland cement
concrete testing in both schedules.
The U.S. is in a transition from the U.S. Standard System of Measurements to the S.I. (International
System) Metric System. Since both will be used for some time, the S.I. will be the primary
measurement shown with the equivalent U.S. Standard in parentheses. A soft conversion between
the two systems was used. Therefore, the two measurements are not identical.

Engineered Concrete: Mix Design and Test Methods, Second Edition


Content :
  • INTRODUCTION
  • TESTS FOR AGGREGATES, PORTLAND CEMENT, AND MORTAR
  • TESTS FOR PORTLAND CEMENT CONCRETE
  • Compressive Strength of Cylindrical Concrete Specimens
  • Flexural Strength of Concrete Using Simple Beam with Third-Point Loading
  • Unit Weight, Yield, and Air Content of Concrete
  • Slump of Hydraulic Cement Concrete
  • Air Content of Freshly Mixed Concrete by the Volumetric Method
  • Making and Curing Concrete Test Specimens in the Laboratory
  • Air Content of Freshly Mixed Concrete by the Pressure Method
  • Bond Strength of Concrete Developed with Reinforcing Steel
  • Ball Penetration in Fresh Portland Cement Concrete
  • Splitting Tensile Strength of Cylindrical Concrete Specimens
  • APPENDICES


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