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Title	EVALUATION OF CONCRETE PATCHING MATERIALS
Accession No	00396670
Authors	Wyant, D C
Corp. Authors / Publisher	VIRGINIA HIGHWAY & TRANSPORTATION RESEARCH ; Virginia Department of Highways ; Federal Highway Administration
Publication Date	19850500
Description	22 p.; References(13); Tables(1)
Abstract	The project evaluated numerous repairs on portland cement concrete pavements and bridge decks made with a number of laboratory accepted, proprietary patching materials and portland cement concrete mixtures of different designs. It was ascertained that in the majority of cases where the patches failed, the failure resulted from the use of improper construction techniques, not from deficiencies in patching materials. Of the three proprietary materials determined not to have performed satisfactorily, Embeco 411A, a magnesia phospate material, has been used for 10 years. Fondu, a high alumina material, and Duracal, a calcium sulfate material, performed so poorly that use of the former should be limited to small patches and use of the latter should not be allowed. In addition, it was ascertained that portland cement concrete incorporating carefully chosen admixtures can provide satisfactory service at lower cost than proprietary patching materials. Upon reviewing the May 1984 final report, the FHWA suggested several changes. Those changes have been incorporated into this revised version. (Author) (Author)
TRT Terms	Aluminum ; Bridge decks ; Building materials ; Calcium sulfates ; Concrete ; Costs ; Magnesium compounds ; Patching ; Phosphates ; Portland cement concrete ; Repairing
Other Terms	Concrete bridge decks; Construction materials; Cost comparison; Repairs
Subject Areas	H32 CEMENT AND CONCRETE; H33 CONSTRUCTION; H34 GENERAL MATERIALS; H40 MAINTENANCE, GENERAL; I32 Concrete
Contract Number	1968-000-940
Report Number	FHWA/VA-84/35; VHTRC 84-35
Availability	National Technical Information Service Order Number: PB86-102191/XAB
TRIS Files	HRIS
Database	TRIS Online

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