SECTION I: INTRODUCTION.
SECTION II: TESTS FOR AGGREGATES, PORTLAND CEMENT, AND MORTAR.
SECTION III: TESTS FOR PORTLAND CEMENT CONCRETE.
SECTION IV: APPENDICES.
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 aimsto assist students in gaining an understanding of PC and PCC through the physical handling andtesting of these materials in the laboratory environment. While the book was primarily written foruse at the college level, it also may serve as a practical guide for the graduate engineer and laboratorytechnician.The body of this book is divided into several sections.
The first explains how concrete batchesare designed, mixed, and measured for various consistencies in a special section entitled Mix DesignProcedures. Section II details the tests of the primary component materials of concrete other thanwater, namely portland cement, aggregates, and mortar. Section III includes some of the fundamentalconcrete testing procedures for different strength parameters in conformity with the standards ofthe American Society for Testing Materials (ASTM).
There probably will never be enough laboratorytime 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 ASTMdesignations, sometimes with modifications dictated by the inherent time constraints of a schoollaboratory. Therefore, in certain cases, such as in securing the specific gravities and absorption ofaggregates, modifications were introduced to fit the usual 3-hour laboratory module.
Where theparticular ASTM method permits alternate procedures, only the one deemed more applicable to theteaching situation was chosen.The unique property of all products utilizing hydraulic cements is the interval required to obtaintest specimens and its time sensitivity. For this reason considerable time must elapse betweenspecimen preparation and testing. This complicates the scheduling process when planning a coursein portland cement concrete and makes this laboratory unique.
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