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NEPLATNÁ ASTM D4580/D4580M-12 15.12.2012 náhled

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ASTM D4580/D4580M-12

Standard Practice for Measuring Delaminations in Concrete Bridge Decks by Sounding

Automaticky přeložený název:

Standardní praktiky pro měření delaminace v betonových mostovek by Ozvučení

NORMA vydána dne 15.12.2012

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Informace o normě:

Označení normy: ASTM D4580/D4580M-12
Poznámka: NEPLATNÁ
Datum vydání normy: 15.12.2012
Kód zboží: NS-27789
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace textu normy ASTM D4580/D4580M-12 :

Keywords:
concrete bridge deck, delamination, sounding, ICS Number Code 93.040 (Bridge construction)

Doplňující informace

Significance and Use

2.1 This practice may be used in conjunction with other methods in determining the general condition of concrete bridge decks.

2.2 This practice may be used in determining specific areas of delamination requiring repair.

1. Scope

1.1 This practice covers procedures for surveying concrete bridge decks by sounding to determine delaminations in the concrete. It is not intended that the procedures described herein are to be used on bridge decks that have been overlaid with bituminous mixtures. The procedures may be used on bridge decks that have been overlaid with portland cement concrete mixtures; however, areas indicated to be delaminated may have a lack of bond between the overlay and the underlying bridge deck (Note 1).

1.2 The following three procedures are covered in this practice:

1.2.1 Procedure A, Electro-Mechanical Sounding Device—This procedure uses an electric powered tapping device, sonic receiver, and recorder mounted on a cart. The cart is pushed across the bridge deck and delaminations are recorded on the recorder.

1.2.2 Procedure B, Chain Drag—This procedure consists of dragging a chain over the bridge deck surface. The detection of delaminations is accomplished by the operator noting dull or hollow sounds. Tapping the bridge deck surface with a steel rod or hammer may be substituted for the chain drag.

1.2.3 Procedure C, Rotary Percussion1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.