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  • ASTM
    C143/C143M-12 Standard Test Method for Slump of Hydraulic-Cement Concrete
    Edition: 2012
    $91.10
    Unlimited Users per year

Description of ASTM-C143 2012

ASTM C143 / C143M - 12

Standard Test Method for Slump of Hydraulic-Cement Concrete

Active Standard ASTM C143 / C143M | Developed by Subcommittee: C09.60

Book of Standards Volume: 04.02




ASTM C143 / C143M

Significance and Use

4.1 This test method is intended to provide the user with a procedure to determine slump of plastic hydraulic-cement concretes.

Note 1 This test method was originally developed to provide a technique to monitor the consistency of unhardened concrete. Under laboratory conditions, with strict control of all concrete materials, the slump is generally found to increase proportionally with the water content of a given concrete mixture, and thus to be inversely related to concrete strength. Under field conditions, however, such a strength relationship is not clearly and consistently shown. Care should therefore be taken in relating slump results obtained under field conditions to strength.

4.2 This test method is considered applicable to plastic concrete having coarse aggregate up to 1 1 / 2 in. [37.5 mm] in size. If the coarse aggregate is larger than 1 1 / 2 in. [37.5 mm] in size, the test method is applicable when it is performed on the fraction of concrete passing a 1 1 / 2 -in. [37.5-mm] sieve, with the larger aggregate being removed in accordance with the section titled Additional Procedure for Large Maximum Size Aggregate Concrete in Practice C172 .

4.3 This test method is not considered applicable to non-plastic and non-cohesive concrete.

Note 2 Concretes having slumps less than 1 / 2 in. [15 mm] may not be adequately plastic and concretes having slumps greater than about 9 in. [230 mm] may not be adequately cohesive for this test to have significance. Caution should be exercised in interpreting such results.

1. Scope

1.1 This test method covers determination of slump of hydraulic-cement concrete, both in the laboratory and in the field.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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.

1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of 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 the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ( Warning Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. 2 )


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

C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field

C138/C138M Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete

C172 Practice for Sampling Freshly Mixed Concrete

C173/C173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method

C231 Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

D638 Test Method for Tensile Properties of Plastics


Keywords

concrete; concrete slump; cone; consistency; plasticity; slump; workability ;


ICS Code

ICS Number Code 91.100.30 (Concrete and concrete products)


DOI: 10.1520/C0143_C0143M-12

ASTM International is a member of CrossRef.

ASTM C143 / C143M

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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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