ASTM C869-91(1999)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 869 – 91 (Reapproved 1999)
Standard Specification for
Foaming Agents Used in Making Preformed Foam for
Cellular Concrete
This standard is issued under the fixed designation C 869; 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.
TABLE 1 Physical Requirements
1. Scope
Property Requirement
1.1 This specification covers foaming agents specifically
Density—The density shall satisfy either of
formulated for making preformed foam for use in the produc-
the following:
tion of cellular concrete.
Density after pumping (see Method C 796)40 6 3 lb/ft
1.2 The function of this specification is to provide the means
(641 6 48 kg/m )
A
Oven dry density (see Method C 796)
for evaluating the performance of a specific foaming agent.
For Type I cement 30.4 6 2.5 lb/ft
This is accomplished by using the foaming agent in making a
(4876 40 kg/m )
standard cellular concrete test batch (see Test Method C 796)
For Type III cement 29.3 6 2.5 lb/ft
(4696 40 kg/m )
from which test specimens are cast.Then, significant properties
Compressive Strength (see Method C 796), 200 psi
of the concrete are determined by tests and compared with the
min (1.4 MPa)
requirements of Section 3. Tensile Splitting Strength (see Method 25 psi
C 796), min (0.17 MPa)
1.3 The values stated in inch-pound units are to be regarded
Water Absorption (see Method C 796), max 25 % by volume
as the standard.
Loss of Air During Pumping(see Method 4.5 % by volume
B
C 796), max
2. Referenced Documents
A
For this comparison, the calculated oven-dry density of the test batch may be
determined by assuming that the water of hydration is 20 % of the weight of the
2.1 ASTM Standards:
W 1 ~0.2 W !
c c
C 796 Test Method for Foaming Agents for Use in Produc- cement. Then the oven2dry density 5 , where W = weight of
c
V
batch
cement; and V = volume of batch.
ing Cellular Concrete Using Preformed Foam batch
For example: using the test batch specified in Method C 796, for Type I cement
( W = 100 lb; W /W = 0.58, where W = total weight of water), the total
c TW c TW
3. Performance Requirements
weight of materials is 100 + 0.58 3 100 = 158 lb (71.67 kg). For a wet density,
3 3
after pumping, of 40 lb/ft (641 kg/m ), the batch volume is 158/40 = 3.95 ft
3.1 The test batch shall conform to the requirements pre-
3(0.11185 m ). The calculated oven dry density is then (
...