concept
This specification covers non-vulcanized (לא נרפא) יריעות גומי עשויות אתילן פרופילן דין (EPDM) או פוליכלורופרן (CR) for waterproof roofs exposed to weather. Design criteria for on-site roof systems, such as fire resistance, site joint strength, material compatibility and resistance to heave, are beyond the scope of this Code. The waterproofing material shall be formulated from the appropriate polymer type and other composite components and shall be able to bond to itself, roof film and substrate for waterproofing on-site splicing and repair. The performance requirements of pre-curing flash include thickness, green strength modulus, ultimate elongation, shelf stability, vulcanization, tensile strength and consolidation, dimensional stability and weather resistance. לָכֵן, the performance requirements of post-vulcanization flash include tensile strength and setting, הַאֲרָכָה, tear resistance, brittleness point, ozone resistance, air oven thermal aging, water absorption and weight changes, linear dimensional changes and weather resistance.

ASTM D4811-2016 מפרט סטנדרטי עבור לא מגופר (לא נרפא) יריעות גומי המשמשות כיריעות גשם לקירוי

רַדִיוּס
1.1 This specification covers non-vulcanized (לא נרפא) rubber sheets made from EPDM (ethylene-propenyl-diene terpolymer) or CR (polychloroprene), intended for use as waterproof roof waterproofing when exposed to weather.

1.2 The tests and performance limits used to characterize these flash materials are specific to each classification and are the minimum to make the product suitable for its intended use.

1.3 ערכים המבוטאים ביחידות SI או יחידות אינץ'-פאונד יטופלו בנפרד כערכים סטנדרטיים. The values specified in each system may not be fully equivalent; לָכֵן, יש להשתמש בכל מערכת ללא תלות זו בזו. Combining values from two systems may result in non-compliance.

1.4 Design criteria for on-site roof systems, such as fire resistance, site joint strength, material compatibility and pull resistance, are beyond the scope of this specification.

1.5 The following precautions apply only to the Test methods section of Section 8 of this specification: תקן זה עשוי להתייחס לחומרים מסוכנים, פעולות וציוד. This standard is not intended to address safety concerns associated with its use. באחריות המשתמשים בתקן זה לקבוע נוהלי בטיחות ובריאות מתאימות ולקבוע את תחולת ההגבלות הרגולטוריות לפני השימוש.