ASTM C1655-06(2022)
(Classification)Standard Classification of Fireclay and High-Alumina Mortars
Standard Classification of Fireclay and High-Alumina Mortars
SIGNIFICANCE AND USE
3.1 Refractory mortars are used for laying, bonding and coating refractory brick. They become an integral part of the resulting refractory lining or structure. Therefore, such mortars should be selected in order to closely match those of the brick. A classification system is provided for use in producing, purchasing and using different types of refractory mortars.
SCOPE
1.1 This classification pertains to fireclay and high-alumina refractory mortars that can be trowelled, dipped or painted to join or coat refractory bricks and shapes.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
General Information
Relations
Standards Content (Sample)
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.
Designation:C1655 −06 (Reapproved 2022)
Standard Classification of
Fireclay and High-Alumina Mortars
This standard is issued under the fixed designation C1655; 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 4. Basis of Classification
1.1 This classification pertains to fireclay and high-alumina 4.1 Heat-Setting Mortars—This class hardens at elevated
refractory mortars that can be trowelled, dipped or painted to temperature by forming a ceramic bond. The minimum tem-
join or coat refractory bricks and shapes. perature required for forming the ceramic bond is usually at
least 2000 °F (1095 °C).
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 4.2 Air-Setting Mortars—This class initially hardens at
conversions to SI units that are provided for information only ambient temperatures in contact with air and forms a strong
and are not considered standard. bond upon drying at 230 °F (110 °C).
1.3 This standard does not purport to address all of the
4.3 Chemically Bonded Mortars—Mortars in this class can-
safety concerns, if any, associated with its use. It is the
not be said to truly airset, since they require some heating to
responsibility of the user of this standard to establish appro-
initiate hardening. However, they harden at temperatures lower
priate safety, health, and environmental practices and deter-
than those required for ceramic bonding. A common example
mine the applicability of regulatory limitations prior to use.
of a chemically bonded mortar is a phosphate-bonded mortar.
1.4 This international standard was developed in accor-
4.4 Each of the above classes of mortar are further classified
dance with internationally recognized principles on standard-
by the condition in which they are supplied:
ization established in the Decision on Principles for the
4.4.1 Dry Mortars—This class is supplied dry and must be
Development of International Standards, Guides and Recom-
mixed with water prior to use.
mendations issued by the World Trade Organization Technical
4.4.2 WetMortars—This class is supplied in a ready for use.
Barriers to Trade (TBT) Committee.
4.5 The above classes of mortars are further classified for
usage with a particular type of brick as prescribed in Table 1.
2. Referenced Documents
2.1 ASTM Standards:
5. Test Methods
C27 Classification of Fireclay and High-Alumina Refractory
5.1 The properties enumerated in this classification shall be
Brick
determined in accordance with the following ASTM test
C199 Test Method for Pier Test for Refractory Mortars
methods:
3. Significance and Use 5.1.1 Pier Test—Test Method C199. For medium-duty,
high-duty, super-duty and high-alumina mortar classes test
3.1 Refractory mortars are used for laying, bonding and
with appropriate brick that meet requirements specified in Test
coating refractory brick. They become an integral part of the
Method C199. For high-alumina mortars in the 80 %, 85 %,
resulting refractory lining or structure. Therefore, such mortars
90 %, and 99 % classes test with high-alumina brick from the
should be selected in order to closely match those of the brick.
appropriate class meeting the requirements specified in Clas-
A
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