Standard Practice for Molding Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Hammer

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 C 1176, 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 inch-pound units or SI 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 must be used independently of each other without combining in any way.
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 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. See Section 6 for additional precautionary information.

General Information

Status
Historical
Publication Date
09-Jun-1999
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM C1435-99 - Standard Practice for Molding Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Hammer
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1435–99
Standard Practice for
Molding Roller-Compacted Concrete in Cylinder Molds
Using a Vibrating Hammer
This standard is issued under the fixed designation C 1435; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope C 496 Test Method for Splitting Tensile Strength of Cylin-
drical Concrete Specimens
1.1 This practice covers molding cylindrical test specimens
C 1170 Test Methods for Determining Consistency and
from concrete when the standard procedures of rodding and
Density of Roller-Compacted Concrete Using Vibrating
internal vibration, as described in Practice C 31/C 31M and
Table
Practice C 1176, are not practicable. This practice is applicable
C 1176 Practice for Making Roller-Compacted Concrete in
to freshly-mixed concrete, prepared in the laboratory and the
Cylinder Molds Using a Vibrating Table
field.
2.2 ACI Documents:
1.2 Freshly-mixed concrete is molded in cylindrical molds
207.5R Report on Roller-Compacted Concrete
using an electric vibrating hammer equipped with a shaft and
211.3 Practice for Selecting Proportions for No-Slump Con-
circular plate.
crete
1.3 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
3. Summary of Practice
inch-pound units are shown in brackets. The values stated in
3.1 This practice describes molding cylindrical concrete test
each system may not be exact equivalents, therefore, each
specimens using a vibrating hammer. Test specimens are
system must be used independently of each other without
molded vertically in cylindrical molds by compacting the stiff
combining in any way.
to very dry concrete mixture in three lifts using a vibrating
1.4 The text of this practice references notes and footnotes,
hammer.
which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered
4. Significance and Use
as requirements of this practice.
4.1 This practice, intended for use in testing roller-
1.5 This standard does not purport to address all of the
compactedconcrete,maybeapplicabletotestingothertypesof
safety concerns, if any, associated with its use. It is the
cementious material such as coarse-grained, soil-cement. This
responsibility of the user of this standard to establish appro-
practice provides standardized requirements for molding stiff
priate safety and health practices and determine the applica-
to very dry consistency concrete mixtures commonly used in
bility of regulatory limitations prior to use.
roller compacted concrete construction. This practice is used
instead of rodding or internal vibration, which cannot properly
2. Referenced Documents
consolidate concrete of this consistency (Note 1).
2.1 ASTM Standards:
C 31/C 31M Practice for Making and Curing Concrete Test
NOTE 1—Further description of roller compacted concrete consistency
Specimens in the Field is given in ACI 207.5R and 211.3. The consistency of concrete using a
vibrating table may be determined in accordance with Test Methods
C 39 Test Method for Compressive Strength of Cylindrical
2 C 1170.
Concrete Specimens
C 172 Practice for Sampling Freshly-Mixed Concrete 4.2 This practice is used to mold cylindrical test specimens
C 192/C 192M Practice for Making and Curing Concrete
commonly used for testing compressive or tensile strength of
Test Specimens in the Laboratory concrete. Specimens tested for compressive strength and split-
C 470 Specification for Molds for Forming Concrete Test
ting tensile strength shall be in accordance with Test Methods
Cylinders Vertically C 39 and C 496, respectively. Test specimens also may be used
to determine density of fresh concrete. Specimens tested for
density of fresh concrete shall be in accordance with Test
Methods C 1170.
This practice is under the jurisdiction of Committee C-09 on Concrete and
Concrete Aggregates and are the direct responsibility of Subcommittee C09.45 on
Roller-Compacted Concrete.
Current edition approved June 10, 1999. Published July 1999. ACI Manual of Concrete Practice, Part 1, Materials and General Properties of
Annual Book of ASTM Standards, Vol 04.02. Concrete, American Concrete Institute, Farmington Hills, MI.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C1435
5. Apparatus held stationary during compaction. The mold sleeve shall have
a minimum wall thickness of 3 mm [ ⁄8 in.], and a minimum
5.1 Molds:
base plate thickness of 6 mm [ ⁄4 in.]. The inside diameter of
5.1.1 Type A Reusable Mold—A cylindrical mold conform-
1 1
the mold sleeve shall be 3 61mm[ ⁄8 6 ⁄16 in.] larger than
ing to the requirements of Specification C 470 for 150-mm
the outside diameter of the Type B mold and have a height 13
[6-in.] diameter by 300-mm [12-in.] high reusable molds.
1 1
66mm[ ⁄2 6 ⁄4 in.] less than the height of the Type B mold.
5.1.2 Type B Single-Use Mold—A single-use plastic, cylin-
drical mold 150-mm [6-in.] diameter and 300-mm [12-in.] in A 50-mm [2-in.] high collar shall be attached to the top of the
height. The mold specifications shall conform to Specification mold to contain concrete and guide the vibrating plate during
C 470 for single-use, plastic molds.
compaction of the final lift.
5.1.2.1 Mold Sleeve—A Type B cylindrical mold shall be
5.2 Vibrating Hammer—A vibrating compaction hammer
insertedintoarigidcylindricalsleeve.Themoldsleeveshallbe
having a minimum mass (without tamping plate) of 10 6 0.2
made of steel or other hard metal resistant to cement paste
kg [22 6 0.4 lb]. It also shall have a minimum power input of
corrosion. The sleeve shall be capable of firmly and vertically
900 W
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.