ASTM C10-76

Specification for Natural Cement (Withdrawn 1978)

General Information

• Status: Historical
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.10 - Hydraulic Cements for General Concrete Construction

Relations

• Replaced By: ASTM C10-06 - Standard Specification for Natural Cement
• Effective Date: 01-Sep-2006

Standards Content (Sample)

~~1~ '=rJ~~~bo.=J ANSI/ASTM C 10 - 76
AMERICAN SOCIETY FOR TESTING AND MATERIALS
1916 Race St., Philadelphia, Pa., 19103
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
If not listed 1n 1he current combined Index. will appear in the next edition.
Standard Specification for
1
NATURAL CEMENT
This Standard is issued under the fixed designation C 10; 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.
1. Scope 5. Chemical Requirements
I. I This specification covers two types of 5.1 The loss on ignition of the cement shall
natural cement as follows: not exceed 12 weight percent.
I.I.I Type N-Natural cement for use 5.2 The insoluble residue of the cement
with portland cement in general concrete con­ shall not be less than 2 weight percent.
struction.
6. Physical Requirements
1.1.2 Type NA-Air-entraining natural
cement for the same uses as Type N. 6.1 Natural cements shall conform to the
respective physical requirements prescribed in
2. Basis of Purchase
Table I.
2.1 The purchaser shall specify the type of 6.2 The cement used in preparing the test
cement desired. specimens for normal consistency, time of set­
ting, strength, and air-entrainment test shall
3. Definition
be the natural cement being tested. The ce­
3.1 natural cement-a hydraulic cement ment used in preparing the test specimens for
produced by calcining a naturally occurring autoclave expansion shall be a blend of 75
argillaceous limestone at a temperature below percent of the natural cement being tested and
the sintering point and then grinding to a fine
25 weight percent of portland cement con­
powder. forming to the requirements for Type II ce­
ment in ASTM Specification C 150, for Port­
4. Additions During Grinding 2
land Cement, unless otherwise specified by
4.1 No addition to this product shall be the purchaser. The natural cement and the
made subsequent to calcination other than portland cement shall be dry mixed to a uni­
water or untreated calcium sulfate, or both,
form blend before water is added.
except at the option of the manufacturer,
7. Acceptance and Rejection
processing additions may be used in the man­
ufacture of the cement, provided such mate­ 7. I Natural cement may be accepted on the
rials in the amounts used have been shown to basis of 7-day tests. If the natural cement fails
be not harmful in accordance with ASTM to pass 7-day strength requirements, the ce­
ment may be accepted on the basis of 28-day
Specification C 465, for Processing Additions
for Use in the Manufacture of Hydraulic
strength tests.
2
Cements. For air-entraining natural cement, 7 .2 Cement failing to meet the initial test
an addition shall be interground that will pro­
for autoclave soundness may be accepted if it
duce air-entraining natural cement meeting
'This specification is under the jurisdiction of ASTM
this specification. This addition shall conform
Committee C-1 on Cement.
to ASTM Specification C 226, for Air-En­
Current edition approved Sept. 24, 1976. Published
November 1976. Originally published as C 10 - 04. Last
training Additions for Use in the Manufac­
previous edition C 10 - 73.
2
ture of Air-Entraining Portland Cement.
'Annual Book of ASTM Standards, Part 13.

---------------------- Page: 1 ----------------------
C10
passes a retest on a second and third series of 9.1.2 Chemical Analysis-Methods C 114,
2
test specimens. Chemical Analysis of Hydraulic Cement,
7.3 The cement shall be rejected if it fails Sections 35 to 37 and 65 to 68.
to meet any of the requirements of this speci­ 9.1.3 Fineness-Method C 204, Test for
fication subject to specific modification by the Fineness of Portland Cement by Air Permea­
purchaser or to the modifications indicated bility Apparatus.' In this fineness determina­
herein, or both. tion the specific gravity of natural cement
shall be considered to be 2.90. Tests shall be
7.4 Cement remaining in storage for a pe­
made at a porosity of 0.530 ± 0.005. In case
riod longer than 6 months after test may be re­
of dispute, the true specific gravity used shall
tested and shall be rejected if it fails to meet
be as determined in accordance with ASTM
any of the requirements of this specification
Method C 188, Test for Specific Gravity of
at that time.
Hydraulic Cement.'
7 .5 Tentative or provisional acceptance of
9 .1.4 A utoc/ave Expansion-Method C
the cement shall not deprive the purchaser of
151, Test for Autoclave Expansion of Port­
the right of rejection in the event final tests or
2
land Cement, with the following modifica­
retests fail to meet applicable requirements.
tion:
9.1.4.1 The cement used in preparing the
8. Packaging and Marking
test specimens shall be a blend of 75 weight
8.1 When the cement is delivered in pack­
percent of the natural cement to be test
...