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Asphalt | NAPA Specification 33700000ss
The National Asphalt Pavement Association (NAPA) provides a database with technical data on asphalt, including mix designs and coverage rates. NAPA specification 337-2.6.2 specifically outlines the requirements for cellulose fibers used in OGFC asphalt.
Asphalt | The Role of Cellulose Fibers in OGFC Asphalt
This guide outlines the production specification and mix design for Open-Graded Friction Course (OGFC) using CreaFill TC 1004/5 recycled cellulose fiber. The typical mix includes 94-96% aggregates (12.5 mm NMAS), 5.5-7.5% PG asphalt binder, and 0.3-0.5% dry fiber, targeting 18-22% air voids. The fiber prevents binder draindown and enhances durability. Critical production requirement: a dedicated pneumatic fiber feeder is mandatory to
inject the loose fiber during a dry-mix phase, ensuring proper dispersion and preventing
clumping. A project-specific laboratory mix design, including draindown and abrasion testing, is compulsory. Key quality control checks are specified to verify mix performance.
Asphalt | Production Specification and Mix Design Guide: Open-Grade Friction Course (OGFC) Using CreaFill TC 1004/5 Recycled Cellulose Fibers
This guide outlines the production specification and mix design for Open-Graded Friction Course (OGFC) using CreaFill TC 1004/5 recycled cellulose fiber. The typical mix includes 94-96% aggregates (12.5 mm NMAS), 5.5-7.5% PG asphalt binder, and 0.3-0.5% dry fiber, targeting 18-22% air voids. The fiber prevents binder draindown and enhances durability. Critical production requirement: a dedicated pneumatic fiber feeder is mandatory to
inject the loose fiber during a dry-mix phase, ensuring proper dispersion and preventing
clumping. A project-specific laboratory mix design, including draindown and abrasion testing, is compulsory. Key quality control checks are specified to verify mix performance.
Sealcoat | All Recycled Fibers are Not the Same
All recycled fibers are not the same. A high-quality fiber depends on sourcing and the
proper milling. The requirements for a recycled cellulose fiber to have an ISO 90001:2015 Certification is even greater. This paper gives an overview on what is required to source and mill fibers that allows CreaFill Fibers to have an ISO 9001:2015 Certification.
Sealcoat | Comparison of CreaFill TC 1004/5 to JRS CF425
This abstract compares CreaFill TC 1004/5 and Central Fiber 425 for asphalt sealcoat reinforcement. Analysis of specification sheets reveals critical differences. CreaFill is a high-purity, certified fiber with ≤5% ash content, ensuring effective reinforcement and crack bridging. In stark contrast, Central Fiber 425 contains 25% inorganic ash filler, which does not reinforce and can weaken the sealcoat film, making it unsuitable. While CreaFill is the clear, viable choice, the ideal solution may be a specialty fiber engineered for asphalt emulsions. Central Fiber 425 is not recommended for this technical application.
Sealcoat | Optimizing Sealcoat Performance: A Guide to Cellulose Fiber Function and Ash Content
Cellulose fibers are a critical performance additive in asphalt sealcoats, enhancing durability through reinforcement, binder stabilization, and improved film integrity. This abstract highlights the importance of low ash content for optimal performance. Ash content, representing inert mineral filler, is a key quality indicator. High-ash fibers (e.g., ≥25%) dilute effective cellulose, potentially weakening the sealcoat and leading to inconsistent results. In contrast, low-ash fibers (≤15%, ideally ≤5%) provide high-purity, functional cellulose, ensuring superior crack bridging, chip retention, and long-term value. For quality sealcoats, specifying a low-ash, high-purity fiber is essential.