ASTM C641-09
(Test Method)Standard Test Method for Iron Staining Materials in Lightweight Concrete Aggregates
Standard Test Method for Iron Staining Materials in Lightweight Concrete Aggregates
SIGNIFICANCE AND USE
This test method evaluates the potential degree of staining attributable to the presence of iron compounds in a lightweight aggregate sample primarily by means of a visual classification method. Such compounds may or may not produce stains on the surface of the concrete in which the aggregate is incorporated.
SCOPE
1.1 This test method covers the testing of lightweight concrete aggregates to evaluate the potential degree of staining from iron compounds.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are provided for information only.
1.3 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.
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Designation: C641 − 09
Standard Test Method for
1
Iron Staining Materials in Lightweight Concrete Aggregates
This standard is issued under the fixed designation C641; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* produce stains on the surface of the concrete in which the
aggregate is incorporated.
1.1 This test method covers the testing of lightweight
concrete aggregates to evaluate the potential degree of staining
4. Apparatus
from iron compounds.
4.1 Balance—Abalance or scale accurate to within 0.1 % of
1.2 The values stated in SI units are to be regarded as the
the test load at any point within the range of use.
standard. The inch-pound values given in parentheses are
3
4.2 Sieves—9.5-mm ( ⁄8-in.) and 600-µm (No. 30) sieves
provided for information only.
conforming to Specification E11.
1.3 This standard does not purport to address the safety
4.3 Filter Paper—shall comply with Specification E832
problems associated with its use. It is the responsibility of the
class E2 with a minimum diameter of 250 mm.
user of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
4.4 Cheesecloth Wrapping—Two thicknesses, reagent grade
tions prior to use.
cheesecloth,approximately457mm(18in.)squareissufficient
for wrapping each sample.
2. Referenced Documents
4.5 Steam Bath—Any suitable apparatus that will meet the
2
2.1 ASTM Standards:
requirement of the test procedure. Water in the steam bath, and
C330 Specification for Lightweight Aggregates for Struc-
makeup water, shall be iron-free water or distilled water.
tural Concrete
NOTE1—Anoventopglasswaresterilizermadeofnonferrousmaterials
C331 Specification for LightweightAggregates for Concrete
is satisfactory.
Masonry Units
C702 PracticeforReducingSamplesofAggregatetoTesting 5. Reagents
Size
5.1 Purity of Reagents—Reagent grade chemicals shall be
D75 Practice for Sampling Aggregates
used in all tests. Unless otherwise indicated, it is intended that
E11 Specification for Woven Wire Test Sieve Cloth and Test
all reagents shall conform to the specifications of the Commit-
Sieves
tee onAnalytical Reagents of theAmerican Chemical Society,
E832 Specification for Laboratory Filter Papers
3
where such specifications are available.
5.2 Purity of Water—Unless otherwise indicated, references
3. Significance and Use
to water shall be understood to mean distilled water or water of
3.1 This test method evaluates the potential degree of
equal purity.
staining attributable to the presence of iron compounds in a
5.3 Concentration of Reagents:
lightweight aggregate sample primarily by means of a visual
5.3.1 Concentrated Acid and Ammonium Hydroxide—When
classification method. Such compounds may or may not
reagents are specified by name it shall be understood that
concentrated reagents of the following specific gravity are
intended:
1
This test method is under the jurisdiction of ASTM Committee C09 on
Hydrochloric acid (HCl) sp gr 1.19
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee
Ammonium hydroxide (NH OH) sp gr 0.90
4
C09.21 on Lightweight Aggregates and Concrete.
Current edition approved Oct. 1, 2009. Published November 2009. Originally
approved in 1969. Last previous edition approved in 2007 as C 641 – 07. DOI:
3
10.1520/C0641-09. “Reagent Chemicals,American Chemical Society Specifications,”Am. Chemi-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or cal Soc., Washington, DC. For suggestions on the testing of reagents not listed by
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM theAmerican Chemical Society, see “Reagent Chemicals and Standards,” by Joseph
Standards volume information, refer to the standard’s Document Summary page on Rosin, D. Van Nostrand Co., Inc., New York, NY, and the “United States
the ASTM website. Pharmacopeia.”
*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
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C641 − 09
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C641 − 09
5.3.2 Diluted acid is described in terms of the number of tion of iron compounds in the aggregate will be deposited on
volumes of the concentrated reagent to be added to a given the filter paper as red, green, or black stains.
numberofvolumesofwater.ThusHCl(1 + 2)means1volume
7.5 Rate the extent
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C641–07 Designation: C 641 – 09
Standard Test Method for
1
Iron Staining Materials in Lightweight Concrete Aggregates
This standard is issued under the fixed designation C 641; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This test method covers the testing of lightweight concrete aggregates to evaluate the potential degree of staining from iron
compounds.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are provided
for information only.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C330 Specification for Lightweight Aggregates for Structural Concrete
C331 Specification for Lightweight Aggregates for Concrete Masonry Units
C702 Practice for Reducing Samples of Aggregate to Testing Size
D75 Practice for Sampling Aggregates
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves Specification for Woven Wire Test Sieve Cloth and Test
Sieves
E832 Specification for Laboratory Filter Papers
3. Significance and Use
3.1 This test method evaluates the potential degree of staining attributable to the presence of iron compounds in a lightweight
aggregate sample primarily by means of a visual classification method. Such compounds may or may not produce stains on the
surface of the concrete in which the aggregate is incorporated.
4. Apparatus
4.1 Balance—A balance or scale accurate to within 0.1 % of the test load at any point within the range of use.
3
4.2 Sieves— 9.5-mm ( ⁄8-in.) and 600-µm (No. 30) sieves conforming to Specification E11.
4.3 Filter Paper—250 6 10-mm diameter, rapid filtering, high wet bursting strength, quantitative grade white filter paper.
—shall comply with Specification E832 class E2 with a minimum diameter of 250 mm.
4.4 Cheesecloth Wrapping—Two thicknesses, reagent grade cheesecloth, approximately 457 mm (18 in.) square is sufficient for
wrapping each sample.
4.5 Steam Bath—Any suitable apparatus that will meet the requirement of the test procedure. Water in the steam bath, and
makeup water, shall be iron-free water or distilled water.
NOTE 1—An oven top glassware sterilizer made of nonferrous materials is satisfactory.
5. Reagents
5.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.21 on
Lightweight Aggregates and Concrete.
´1
Current edition approved Jan. 1, 2007. Published February 2007. Originally approved in 1969. Last previous edition approved in 1998 as C641–98 . DOI:
10.1520/C0641-07.
Current edition approved Oct. 1, 2009. Published November 2009. Originally approved in 1969. Last previous edition approved in 2007 as C 641 – 07. DOI:
10.1520/C0641-09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
*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.
1
---------------------- Page: 1 ----------------------
C641–09
reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where
3
such specifications are available.
5.2 Purity of Water—Unless otherwise indicated, references to water shall be understood to mean distilled water or water of
equal purity.
5.3 Concentration of Reagents:
5.3.1 Concentrated Acid and Ammonium Hydroxide—When reagents are specified by name it shall be understood that
concentrated reagents of the following specific gravity are intended:
Hydrochloric acid (HCl) sp gr 1.19
Ammonium hydroxide (NH OH) sp gr 0.90
4
5.3.2 Diluted acid is described i
...
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