ASTM D1985-91(1997)
(Practice)Standard Practice for Preparing Concrete Blocks for Testing Sealants, for Joints and Cracks
Standard Practice for Preparing Concrete Blocks for Testing Sealants, for Joints and Cracks
SCOPE
1.1 This practice covers the preparation of concrete blocks used for testing of joint and crack sealants for portland-cement concrete and asphaltic-concrete pavements. There are numerous standard material specifications that use concrete blocks prepared according to this practice. Refer to the specific standard material specification of interest to determine which tests apply and refer to the test methods for each specific test.
1.2 This standard does not purport to address the safety problems 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.>
1.3 The values stated in inch-pounds units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
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Designation: D 1985 – 91 (Reapproved 1997)
Standard Practice for
Preparing Concrete Blocks for Testing Sealants, for Joints
and Cracks
This standard is issued under the fixed designation D 1985; 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 4. Standard Conditions
1.1 This practice covers the preparation of concrete blocks 4.1 The laboratory atmospheric conditions, hereinafter re-
used for testing of joint and crack sealants for portland-cement ferred to as standard conditions, shall be in accordance with
concrete and asphaltic-concrete pavements. There are numer- Specification E 171, (73.4 6 3.6°F (23 6 2°C) and 50 % 6
ous standard material specifications that use concrete blocks 5 % relative humidity).
prepared according to this practice. Refer to the specific
5. Concrete-Block Preparation
standard material specification of interest to determine which
5.1 Materials—The aggregate shall conform to Specifica-
tests apply and refer to the test methods for each specific test.
1.2 This standard does not purport to address all of the tion C 33, except as specified herein. The aggregate grading
shall be as shown in Table 1. The coarse aggregate shall consist
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- of crushed limestone (plus 95 % CaCO ) having a water
absorption of not more than 1.5 %. The fine aggregate shall
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. consist of crushed limestone and shall be manufactured from
the same parent rock as the coarse aggregate. The portland
1.3 The values stated in inch-pounds units are to be re-
garded as the standard. The values given in parentheses are cement shall conform to ASTM Specification C 150, Type II.
The concrete shall have a water-cement ratio of 0.49, a cement
provided for information purposes only.
factor of 6.0 6 0.5 bags of cement per cubic yard (335 6 30
2. Referenced Documents
1 1
kg/m ), and a slump of 2 ⁄2 6 ⁄2 in. (636 13 mm). The ratio
2.1 ASTM Standards: of fine aggregate to total aggregate shall be approximately
C 33 Specification for Concrete Aggregates 40 % by solid volume. The air content shall be 5.0 6 0.5 % and
C 150 Specification for Portland Cement shall be obtained by the addition to the batch of an air-
C 192 Practice For Making and Curing Concrete Test Speci- entraining agent such as a neutralized thermoplastic resin.
mens in the Laboratory Prepare the concrete in accordance with the procedure de-
E 171 Specification for Standard Atmospheres for Condi- scribed in Test Method C 192.
tioning and Testing Flexible Barrier Materials 5.1.1 Alternate Block Materials—As an alternate to the
materials specified in 5.1, the blocks may be prepared using a
3. Significance and Use
concrete mixture which meets local requirements for concrete
3.1 It is intended that this practice may be used by manu-
pavements. Use the materials specified in 5.1 for all referee
facturers, users and testing agencies. The use of this practice testing.
establishes a uniform procedure for preparing concrete blocks
5.2 Block Preparation—Use a minimum 4 in. wide by 12 in.
for the testing of sealants. It is not intended to establish test long by 3 in. deep (100 mm by 300 mm by 75 mm) mold, made
procedures or conditions of test which are associated with each
from metal and provided with a metal base plate. Provide
of the joint sealants. means for securing the base plate to the mold. Make the
assembled mold and base plate water-tight and oil with mineral
oil before use. Fill the mold with concrete, prepared in
This practice is under the jurisdiction of ASTM Committee D-4 on Roa
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