Cellulose Fiber Evaluation for Asphalt Terminals J.Rettenmaier USA Cellulose Fiber Additive For Asphalt Terminals J. Sullivan Sales LLC

Cost Comparison of Adding Fiber at the Asphalt Terminal VS. Contractors Hot Mix Plant Fiber cost at plant $.25/LB x 6 (.3%)= $1.50/ton Rental cost for metering fiber at terminal $.50/ton Labor cost for managing equipment at plant $.25/ton – Approximate Cost at Hot Mix Plant, $2.25/ton Fiber cost at terminal $.45/LB x 6 (.3%) = $2.70/ton Fiber cost at terminal $.45/LB x 4 (.2%) = $1.80/ton

Advantages of Adding Fiber at the Terminal Terminal blending improves efficiency of fiber Uniform dispersion provides fiber cost reduction Terminal blended fiber reduces labor costs Eliminates the need for renting metering equipment

Requirement of Adding Fiber at the Terminal Fiber is added at 3.3% by weight of the oil 3.3% addition in oil equals.2% in mix design Drain down test will determine fiber addition

Drain Down of a SMA and PFC Mixtures Must Meet a.2% or less Requirement SMA Mixture Without Fiber Failed Drain Down Requirement SMA Mixture With 6.5% Oil Had 5.8% Drain Down

Drain Down of a SMA Mixture Without Fiber Added Cont. 7.1% Drain Down Failed Requirement 2.5 % Drain Down in PFC Failed Requirement of.2% or less oil

Drain Down of a SMA Mixture Without Fiber Added Cont. 2.8% Drain Down Failed Requirement 3.1% Drain Down Failed Requirement

Cellulose Fiber Addition in PG at 2.5% in the Oil.3% Retention Failed Drain Down Test Requirement.2% Retention Passed Drain Down Test Requirement

SMA Mixed Design With 7% Oil With 2.5% Fiber in the Oil.1% Passes Drain Down Requirement.4% Fails Drain Down Requirement

PFC Mixture With 6% and 6.5% Oil.2% Drain Down Passes Requirement

SMA Mixture With 6%,6.5% and 7% Oil and 4% Fiber Addition.1% Drain Down Passes Requirement.04% Drain Down Passes Requirement

PFC Mixtures With 6%, 6.5%, and 7% Oil and 4% Fiber Addition.04%,.03%, and.02% Drain Down Passes Requirement

Silva Contracting on a 6000/ton OGFC mixture applied on Interstate 10 west of Houston Martin Asphalt of Houston, TX was the first terminal blending operation to add fiber in their PG Through a series of drain down tests it was determined that the fiber should be added at 3.3% by weight of the polymer modified oil.

Martin PG76-22 and 3.3% Interfibe FT Fiber Specific Gravity D70 Method Rotational Viscosity D4402 Method Martin PG Specific Gravity Interfibe FT 3.3% addition Martin PG (135 C) ,835 Interfibe FT 3.3% addition (135 C) 11,488 Martin PG (165 C) Interfibe FT 3.3% addition (165 C) 2,980

Elastic Recovery Results with 3.3%FT fiber Test Method D6084 (10c) Martin Asphalt Interfibe FT 3.3%

Separation Test D7173 without agitation PG w/o FT SP Top 1/3 (350 F) PG w/o FT SP Bottom 1/3 (350) Difference.50 PG76-22 w/o Agitation the Fiber Separated

Simulated Tank Storage Paddle With Agitation 1-2 RPM at 350 F for 3 Days PG w/o FT (SP Top 1/3) PG with FT (SP Top 1/3) PG w/o FT (SP Bottom 1/3) PG with FT (SP Bottom 1/3) The Difference:.25% w/o and.50% with FT

Simulated Tank Storage Rotational Viscosity Test Method D4402 PG (135C) w/o FT Tp: 2155 Bt: 2190 PG (135C) with FT Tp: 9850 Bt: 9755 PG (165C) w/o FT Tp: 522 Bt: 528 PG (165C) with FT Tp: 2850 Bt: 2725

The Addition of Interfibe FT Confirmed Increased Rotational Viscosity Increased Softening Point Decreased Elastic Recovery Simulated Tank Storage Confirmed: Minimal Agitation Maintained the Mixture of FT Fiber in PG76-22 in suspension.