Significance and Use

The indentation and the residual indentation of resilient floor covering is important since the resistance and recovery from indentation reflects on the ability of the resilient floor covering to perform properly after installation.

The indentation of a resilient floor covering shall be measured using a specified type of indentor, flat or spherical, under a specified load and time.

The residual indentation of a resilient floor covering shall be measured after a specified recovery time.

See Table 1 for detailed testing and conditioning requirements by products (specification) type.

1. Scope

1.1 This test method covers procedures to determine short-term indentation and residual indentation of resilient flooring, when subjected to concentrated loads.

1.2 The test methods appear in the following order:

1.3 There are two procedures with their respective apparatus. The first (McBurney Test) is described in Sections 4 to 10 and is restricted to a spherical foot. It is only used for initial indentation measurements of VCT. The second is described in Sections 11 to 15 and has interchangeable feet with variable geometry. It is used to measure initial and residual indentation.

1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

F141 Terminology Relating to Resilient Floor Coverings

F1066 Specification for Vinyl Composition Floor Tile

F1303 Specification for Sheet Vinyl Floor Covering with Backing

F1700 Specification for Solid Vinyl Floor Tile

F1913 Specification for Vinyl Sheet Floor Covering Without Backing

Keywords

indentation; McBurney; resilient flooring; residual indentation;

ICS Code

ICS Number Code 97.150 (Non-textile floor coverings)

DOI: 10.1520/F1914-07R11

ASTM International is a member of CrossRef.

ASTM F1914