ASTM C1435/C1435M-20

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of the standard as published by ASTM is to be considered the official document.
Designation: C1435/C1435M − 14 C1435/C1435M − 20
Standard Practice for
Molding Roller-Compacted Concrete in Cylinder Molds
Using a Vibrating Hammer
This standard is issued under the fixed designation C1435/C1435M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This practice covers molding cylindrical test specimens from concrete when the standard procedures of rodding and
internal vibration, as described in Practice C31/C31M and Practice C1176/C1176M, are not practicable. This practice is applicable
to freshly-mixed concrete, prepared in the laboratory and the field.
1.2 Freshly-mixed concrete is molded in cylindrical molds using an electric vibrating hammer equipped with a shaft and circular
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C172/C172M Practice for Sampling Freshly Mixed Concrete
C470/C470M Specification for Molds for Forming Concrete Test Cylinders Vertically
C496/C496M Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens
C1170/C1170M Test Method for Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table
C1176/C1176M Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table
2.2 ACI Documents:
ACI 207.5R Report on Roller-Compacted Concrete
ACI 211.3 Practice for Selecting Proportions for No-Slump Concrete
3. Summary of Practice
3.1 This practice describes molding cylindrical concrete test specimens using a vibrating hammer. Test specimens are molded
vertically in cylindrical molds by compacting the stiff to very dry concrete mixture in four lifts using a vibrating hammer.
This practice is under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates and are the direct responsibility of Subcommittee C09.45 on
Roller-Compacted Concrete.
Current edition approved Oct. 1, 2014April 1, 2020. Published November 2014May 2020. Originally approved in 1999. Last previous edition approved in 20082014 as
C1435/C1435M – 08.C1435/C1435M – 14. DOI: 10.1520/C1435_C1435M-14.10.1520/C1435_C1435M-20.
Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:C09-1045. Contact ASTM Customer
Service at service@astm.org.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
ACI Manual of Concrete Practice, Part 1, Materials and General Properties of Concrete, American Concrete Institute, Farmington Hills, MI.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1435/C1435M − 20
4. Significance and Use
4.1 This practice, intended for use in testing roller-compacted concrete, may be applicable to testing other types of cementitious
material such as coarse-grained, soil-cement. This practice provides standardized requirements for molding stiff to very dry
consistency concrete mixtures commonly used in roller compacted concrete construction. This practice is used instead of rodding
or internal vibration, which cannot properly consolidate concrete of this consistency.
NOTE 1—Further description of roller compacted concrete consistency is given in ACI 207.5R and ACI 211.3. The consistency of concrete using a
vibrating table may be determined in accordance with Test Methods C1170/C1170M.
4.2 This practice is used to mold cylindrical test specimens commonly used for testing compressive or tensile strength of
concrete. Specimens tested for compressive strength and splitting tensile strength shall be in accordance with Test Methods
C39/C39M and C496/C496M, respectively. Test specimens also may be used to determine density of fresh concrete.
NOTE 2—For some extremely dry mixtures; (those with a consistency greater than 45 s when tested in accordance with Test Methods C1170/C1170M)
the density of specimens made in accordance with this practice may be greater than the in-place density of roller-compacted concrete due to the greater
potential for voids at the bottom of the lifts in the field.
NOTE 3—The mass of the apparatus and amount of force applied by the operator may significantly affect the density of specimens made from these
mixtures; thus, discretion is advised when interpreting test results on specimens made according to this practice.
5. Apparatus
5.1 Molds:
5.1.1 Type A Reusable Mold—A cylindrical mold conforming to the requirements of Specification C470/C470M for 150-mm
[6-in.] diameter by 300-mm [12-in.] high reusable molds.
5.1.2 Type B Single-Use Mold—A single-use plastic, cylindrical mold 150-mm [6-in.] diameter and 300-mm [12-in.] in height.
The mold specifications shall conform to Specification C470/C470M for single-use, plastic molds.
5.1.2.1 Mold Sleeve—A Type B cylindrical mold shall be inserted into a rigid cylindrical sleeve. The cylindrical sleeve shall be
made of steel or other hard metal resistant to cement paste corrosion. The sleeve shall be capable of firmly holding the plastic mold
upright without deformation of the mold. The sleeve shall be split and hinged on one side so that it can be opened to remove the
plastic mold; adjustable clamps shall be provided on the other side for tightening the sleeve around the mold. A metal base plate
with brackets shall be provided in which to insert the bottom portion of the sleeve to hold the sleeve during compaction. The sleeve
1 1
shall have a minimum wall thickness of 3 mm [ ⁄8 in.], and a minimum base plate thickness of 6 mm [ ⁄4 in.]. The inside diameter
1 1
of the mold sleeve shall be 3 6 1 mm [ ⁄8 6 ⁄16 in.] larger than the outside diameter of the Type B mold and have a height 13
1 1
6 6 mm [ ⁄2 6 ⁄4 in.] less than the height of the Type B mold.
5.2 Vibrating Hammer—A vibrating compaction hammer havi
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