ASTM C821-78(2000)

Standard Specification for Lime for Use with Pozzolans (Withdrawn 2009)

ABSTRACT
This specification covers all types of commercial hydrated lime such as: high-calcium, magnesium, or dolomitic-hydrated lime. This lime is used with pozzolans. The lime shall conform to the required physical and chemical limits: chemical factor, blaine fineness, and pozzolanic receptivity index. The following test methods shall be done: determination of calcium oxide, magnesium oxide, and carbon dioxide; calculation of chemical factor; blaine fineness; pozzolanic receptivity index; lime-pozzolan strength; and lime-pozzolan-aggregate strength and freeze-thaw resistance.
SCOPE
1.1 This specification covers all types of commercial hydrated lime such as: high-calcium, magnesium, or dolomitic-hydrated lime. By-product limes and slaked quick limes in dry, wet, or slurried form are also included.
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.
WITHDRAWN RATIONALE
This specification covers all types of commercial hydrated lime such as: high-calcium, magnesium, or dolomitic-hydrated lime. By-product limes and slaked quick limes in dry, wet, or slurried form are also included.
Formerly under the jurisdiction of Committee C07 on Lime, this specification was withdrawn in March 2009 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Withdrawal Date: 02-Mar-2009
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C07 - Lime and Limestone
• Drafting Committee: C07.02 - Specifications and Guidelines

Relations

• Replaced By: ASTM C821-09 - Standard Specification for Lime for Use with Pozzolans
• Effective Date: 01-Jan-2000
• Referred By: ASTM E1266-20 - Standard Practice for Processing Mixtures of Lime, Fly Ash, and Heavy Metal Wastes in Structural Fills and Other Construction Applications
• Effective Date: 01-Jan-2000
• Referred By: ASTM C593-19 - Standard Specification for Fly Ash and Other Pozzolans for Use With Lime for Soil Stabilization
• Effective Date: 01-Jan-2000
• Referred By: ASTM C595/C595M-23 - Standard Specification for Blended Hydraulic Cements
• Effective Date: 01-Jan-2000

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: C 821 – 78 (Reapproved 2000)
Standard Specification for
Lime for Use with Pozzolans
This standard is issued under the fixed designation C 821; 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.
TABLE 1 Chemical and Physical Requirements
1. Scope
Chemical factor, min 50
1.1 This specification covers all types of commercial hy-
Blaine fineness, min, cm /g 10 000
drated lime such as: high-calcium, magnesium, or dolomitic-
Pozzolanic receptivity index, min 100
hydrated lime. By-product limes and slaked quick limes in dry,
wet, or slurried form are also included.
1.2 This standard does not purport to address all of the
5. Performance Requirements
safety concerns, if any, associated with its use. It is the
5.1 If the chemical factor, Blaine fineness, or pozzolanic
responsibility of the user of this standard to establish appro-
receptivity index is below the limits given in Table 1, the lime
priate safety and health practices and determine the applica-
shall be required to meet the applicable performance require-
bility of regulatory limitations prior to use.
ments listed in Table 2. Where such lime complies with the
limitslistedinTable2,itshallbeconsideredacceptableforuse
2. Referenced Documents
with pozzolans. However, it may be necessary to increase the
2.1 ASTM Standards:
lime content in the lime-pozzolan mixtures in order to meet
C25 Test Methods for Chemical Analysis of Limestone,
minimum design criteria.
Quicklime, and Hydrated Lime
C50 Practice for Sampling, Inspection, Packaging, and 6. Test Methods
Marking of Lime and Limestone Products
6.1 Chemical Factor:
C 204 Test Method for Fineness of Hydraulic Cement by
6.1.1 Determine calcium oxide (CaO), magnesium oxide
Air Permeability Apparatus
(MgO), and carbon dioxide (CO ) contents in accordance with
C 593 Specification for Fly Ash and Other Pozzolans for
Test Methods C25. When the magnesium oxide content is
Use with Lime
greater than 5 %, determine the peak height of magnesium
oxide and magnesium hydroxide using standard X-ray diffrac-
3. Terminology
tion procedures and calculate the ratio (r) of magnesium oxide
3.1 Definitions:
to hydroxide using Eq 1. When the magnesium oxide is less
3.1.1 chemical factor—a numerical value of the active
than 5 %, the value of r shall be 0.30.
constituents in the hydrated lime that react chemically with a
cps MgO
pozzolan. The value is based on the combined calcium oxide
r 5 (1)
cps MgO 1 2.0 ~cps Mg ~OH! !
equivalents of free calcium oxide, calcium hydroxide, and
magnesium oxide. Calcium carbonate and magnesium hydrox-
where:
ideareexcluded,sincethesecompoundshavebeenfoundtobe
cps = countspersecondofprincipalpeakscorrespondingto
nonreactive.
an interplanar spacing for MgO of 2.106 Å and for
3.1.2 pozzolanic receptivity index—a performance factor
Mg(OH) of 2.365 Å.
incorporating both chemical quality and fineness, determined
6.1.2 Calculation of Chemical Factor—Using the test re-
by Eq 3.
sults provided by 6.1.1 the chemical factor (C.F.) is determined
by Eq 2:
4. Chemical and Physical Requirements
C.F.5~CaO!2 1.27 ~CO !
...