MIL-PRF-24176C
2.4 Order of precedence. In the event of a conflict between the text of this document and the references
cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes
applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Qualification. The cement furnished under this specification shall be products that are authorized by
the qualifying activity for listing on the applicable qualified products list before contract award (see 4.1 and 6.4).
3.1.1 Requalification in case of reformulation. Any changes in the formulation of the product submitted
for qualification testing shall be cause for requalification of the product (see 4.2).
3.2 Cement. The cement shall be a two -component (component A-resin and component B-curing agent),
chemically reactive, epoxy cement, with suitable additives to produce a material in conformance with the
requirements specified herein. The use of any ozone depleting substance (ODS) in the composition of the cement
under this specification directly or referenced in any test method is hereto prohibited. Envi ronmentally safe and
non-ODS alternative solvents may be substituted for any previously specified ODS such as trichoroethylene (see
6.2). The use of asbestos or asbestos containing ingredients in the cement is prohibited.
3.3 Manufacture. Ingredients for each component shall be processed and mixed to produce a product
which is uniform, free from dirt and grit, and in full conformance with the requirements of this specification.
3.4 Quantitative requirements. The cement shall conform to the quantitative requirements shown in
Table I, and as herein specified.
TABLE I. Quantitative requirements.
Requirements
Characteristic
Minimum
Maximum
Hardness of cured epoxy cement, Type D units
55
---
Pot life, minutes
21°C ± 1°C (70°F ± 2°F)
15
180
32°C ± 1°C (90°F ± 2°F)
10
120
Curing time, hours
---
24
Compressive strength, pascal (lb/in2)
3.9 x 107
---
(5500)
Shrinkage, percent
---
0.25
3.5 Qualitative requirements. The cement shall conform to the qualitative requirements specified herein.
3.5.1 Consistency. The two components of the cement shall be of smooth, uniform consistency and
sufficiently viscous to allow ready mixing at temperatures between 21°C and 32°C (70°F and 90°F).
3.5.2 Color. The two components of the cement shall be of dissimilar colors and the finished cement
shall be a distinctive color different from either component when tested as specified in 4.5.3.
3.5.3 Application characteristics. The cement shall be trowelable and shall produce a smooth surface
when tested as specified in 4.5.5.
3.5.4 Resistance to vertical sagging. The cement shall not sag when tested as specified in 4.5.6.
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