ASTM C143/C143M-08

    Historical Standard: Método de ensaye estándar para la determinación del revenimiento en el concreto a base de cemento hidráulico


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    Significance and Use

    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.

    This test method is considered applicable to plastic concrete having coarse aggregate up to 1½ in. [37.5 mm] in size. If the coarse aggregate is larger than 1½ in. [37.5 mm] in size, the test method is applicable when it is performed on the fraction of concrete passing a 1½-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 C 172.

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

    Note 2—Concretes having slumps less than ½ 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. Alcance

    1.1 Este método de prueba comprende la determinación del revenimiento en el concreto elaborado con cemento hidráulico, tanto en laboratorio como en campo.

    1.2 Los valores especificados en unidades de pulgada-libra o en unidades SI, deben considerarse separadamente como valores estándar. Dentro del texto, las unidades SI se presentan entre paréntesis. Los valores establecidos en cada sistema pueden no ser exactos en su equivalencia; por esto, cada sistema debe utilizarse de manera independiente. Combinar los valores en ambas unidades puede provocar una no correspondencia.

    1.3 El texto de este estándar hace referencia a notas y notas de pie, las cuales proporcionan material explicativo. Estas notas y las notas al pie (excluyendo las de las tablas y figuras) no deben considerarse requerimientos de este estándar.

    1.4 Este método no pretende solucionar todos los problemas de seguridad que puedan estar asociados con su uso. Es responsabilidad del usuario de esta norma establecer las medidas de seguridad e higiene apropiadas, y determinar la aplicabilidad de las restricciones regulatorias antes de usarlo. (Advertencia – Las mezclas frescas de cementantes hidráulicos son cáusticas y pueden causar quemaduras químicas a la piel y al tejido por una exposición prolongada.)

    2. Documentos Citados

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

    C172/C172M Practice for Sampling Freshly Mixed Concrete

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

    C231/C231M Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

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

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

    D638 Test Method for Tensile Properties of Plastics