1.1 This practice covers molding rectangular test specimens from concrete when the standard procedures of rodding and internal vibration, as described in Practice C31/C31M, is not practicable. This practice is applicable to freshly mixed roller-compacted concrete prepared in the laboratory and the field. 1.2 Freshly mixed concrete is molded in rectangular molds using an electric vibrating hammer equipped with a shaft and rectangular plate. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound 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. 1.4 The text of this practice 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 this practice. 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.
Currently, there is not a practice for establishing flexural strength data on roller-compacted concrete for pavement design. Roller-compacted concrete is gaining use as a pavement for roads, shoulders, and streets, and all pavements need flexural strength data for design purpose.
Keywordsflexural; consolidate; mold; roller compacted concrete; soil cement; specimen; strength; tensile; vibrating hammer
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top