ASTM C178-47

Specification for Air-Setting Refractory Mortar (Wet Type) for Boiler and Incinerator Services (Withdrawn 1972)

General Information

• Status: Withdrawn
• Technical Committee: C08 - Refractories

Standards Content (Sample)

AMERICAN SOCIETY FOR TESTING MATERIALS
1916 RACE ST., PHILADELPHIA 3, PA.
Reprinted from Copyrighted Book of ASTM Standards, Part 3.
APPROVED AS
AMERICAN STANDARD
BYTHE AMERICAN STANDARDS ASSOCIATION
ASA NO.: Alll.24-1955
UDC 666.76: 666.93: 621.l
Standard Specifications far
AIR-SETTING REFRACTORY MORTAR (WET TYPE) FOR
1
BOILER AND INCINERATOR SERVICES
Reproduced By GLOBAL
ENGINEERING DOCUMENTS
With The Pennission Of ASTM
Under Royalty Agretmau
ASTM Designation: C 178-47
2
ADOPTED, 1947.
Reapproved in 1953 Without Change.
This Standard of the American Society for Testing Materials is issued under
the fixed designation C 178; the final number indicates the year of original
adoption as standard or, in the case of revision, the year of last revision.
Scope
Quality
1. These specifications cover the wet
3. The mortar shall be sufficiently
type of air-setting refractory mortar
free from grit and of such quality and
for use in laying up :fireclay refractories
workability that it will spread satisfac­
in boiler furnaces and incinerators. Re­
torily with a trowel, either as it comes
quirements are specified for three classes
from the container or after a moderate
of mortar. The mortar used should be
amount of tempering with water. The
of sufficient refractoriness for the type
mortar shall have properties that will
of service encountered. Unless otherwise
enable it to be converted readily to
specified, high duty mortar shall be
dipping consistency by the addition of
supplied.
water. At any time within a 6-month
period after purchase, the mortar in a
Classes
newly opened container shall not have
2. High-temperature refractory mor­
stiffened or hardened to such an extent
tars are classified according to the
as to prevent its easy removal and
service and grade of fireclay refractories
mixing.
with which they are to be used. The
several classes of mortar are distin­
Test Requirements
guished by their refractoriness test tem­
4. (a) Particle Size.-The particle size
peratures (Section 4 (d)), as follows:
of the mortar shall be such that 95
Refractoriness
Class Teat Temperature
per cent shall pass a No. 40 (420-micron)
Super duty. . . . . . . . . . . . 2910 F. (1600 C.)
A.S.T.M. sieve (equivalent to mesh
High duty. 2730 F. (1500 C.)
No. 35 of the Tyler standard series),
Intermediate duty. . . . . . . . 2550 F. (1400 C.)
and not more than 0.5 per cent shall be
1 Under the standardization procedure of the Society,
these &pecifications are under the jurisdiction of the
retained on a No. 20 (840-micron)
A.S.T.M. Committee C-8 on Refractories.
1 Prior to adoption as standard, these specifications
A.S.T.M. sieve (equivalent to mesh No.
were published as tentative from 1943 to 1947, being re·
20 of the Tyler standard series).
vised in 1944 and 1945.
635

---------------------- Page: 1 ----------------------
636 SPECU'ICATIONS FOR Am-SETTING REFRACTORY MORTAR (C 178
...