Aci 116R

ACI 116R-90

This document has been approved for use by agencies of the Department of Defense and for listing in
the D oD Index of Specifications and Standards.

Cement and Concrete Terminology
Reported by ACI Committee 116
Bryant

chairman

H. Nash Babcock
Glen Bollin
Vance H. Dodson
Dennison F. Fiala
Kurt F. Gibbe
Robert L. Henry

Mark B. Hogan
Henri L. Isabelle
James R.Libby
William R. Lorman
Richard C. Mielenz

Austin H. Morgan, Jr.
Elmer H. Payne
Owen Richards
Todd Rutenbeck
Ephraim Senbetta
Lewis B. Tuthill

Foreword
This report is the authoritative glossary for cement and concrete technology. It is to be
used generally and specifically in ACI technical communications, correspondence, and
publications. One mission of Committee 116 is to produce andmaintain a list of terms with
their meaning in the field of cement and concrete technology.
Committee 116 has tried to produce a glossary that will be useful, comprehensive, and
up-to-date. However, it recognizes that the listing may not be complete and that some definitions may be at variance with some commonly accepted meanings.
Users of the glossary are invited to submit suggestions forchanges and additions to ACI
Headquarters for consideration by Committee 116 in preparing future editions. In the event
that a user disagrees with any of the definitions, it is hoped that the reasons for such will be
given to the committee.
The committee is aware that some of the definitions included may seem entirely selfevident to an expert in the concrete field. This occurs because no termhas been discarded
if there was reason to believe it would appear to be technical in nature to a casual reader of
the ACI literature.
In November 1986 the committee voted to use the following editorial rules:
1. Each definition shall be stated in one sentence.
2. Each definition shall consist of the term printed in boldface, a dash, and the definition
statement.
3. The definition statementdoes not repeat the term and should state the class or group
and identify the features unique to the term; as “mathematics-the science of numbers
and spaces.”
4. Verbs should be stated in the infinitive rather than the participle, for example the term
to be defined should be “abrade” not “abrading.”
5. Notes may be appended to definition statements.
6. Cross references may take the place of adefinition as “green concrete-See concrete,
green.” They also may call attention to related items as “flint-a variety of chert. (See also
chert).”
7. Generally where there are a number of terms, the last word of which is the same, the
definitions are given where the terms are given in the inverted form as “cement, low-heat”
rather than “low-heat cement” but under the latter entry there willbe a cross reference “See
cement, low-heat.”
The invaluable contributions of the past chairmen of Committee 116, R. D. Mielenz, D. L.
Bloem, W. H. Price, R . E. Davis, Jr., J. R. Dise, K. F. Gibbe, and Robert L. Henry as well as
those of all the present members and especially the unusually diligent efforts of Henri
Isabelle, Bill Lorman, Jim Libby, and Lew Tuthill, are gratefully acknowledged.For drafting this edition, all members, both associates and voting, participated.
Copyright c@ 1990 American Concrete Institute
ACI Commtttee Reports, Gutdes, Standard Practices, and Commentaries are
intended for guidance in designing, planning, executing, or inspecting construction, and in preparing specifications. Reference to these documents shall
not be made in the P roject Documents. Ifitems found in these documents are
desired to be part of the Project Documents, they should be phrased in mandatory language and incorporated into the Project Documents.,

This report supercedes ACI 116R-85.
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