Best Practices for PPA Modified Asphalt
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Best Practices for PPA Modified Asphalt.

Best Practices for PPA Modified Asphalt - PhosphateFacts

The low temperature properties (below approximately 40oF [4oC]) of a PPA modified asphalt are determined mainly by the base asphalt. The PPA generally provides improvements to the high temperature properties. For example, to meet a PG 64-28 specification, the base asphalt should meet a PG XX-28 specification.

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Best Practices for PPA Modification of Asphalt

The low temperature properties (below approximately 40oF [4oC]) of a PPA modified asphalt are determined mainly by the base asphalt. The PPA generally provides improvements to the high temperature properties. For example, to meet a PG 64-28 specification, the base asphalt should meet a PG XX-28 specification.

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Best Practices for PPA Modification of Asphalt

Best Practices for PPA Modification of Asphalt •Innophos •ICL Performance Products Published in Cooperation of the Polyphosphoric Acid Producers in the US. Contents General Considerations PPA level selection Conclusion. PPA in Asphalt Paving 12 Years and Counting Over the last 5 years –estimated 200 million tons of asphalt mixes containing PPA –about equivalent to 3,000 miles of 2 ...

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PPA modification and performance testing Asphalt magazine

The PPA Subcommittee of the Phosphate Forum of Americas has recently produced two pamphlets: Best Practices for PPA Modification of Asphalt (7 pages) and Use of Polyphoshoric Acid in Asphalt Binders (13 pages). These excellent publications were written by two Asphalt Institute Members, ICL Performance Products LP and Innophos Inc, and can be obtained by contacting one of them. Another ...

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Best Practices for Polyphosphoric Acid Modification of ...

07/04/2009  Best Practices for Polyphosphoric Acid Modification of Asphalt: Phosphate Forum of the Americas. Polyphosphoric acid (PPA) has been proven as a successful modifier for asphalt concrete (AC) either by itself or in combination with polymers. On its own, PPA increases the high-temperature performance of AC, as measured by the performance grade (PG) system, with no loss, and

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Polyphosphoric Acid Modification of Asphalt Binders: A ...

Best Practices for Polyphosphoric Acid Modification of Asphalt: ... about PPA-modified asphalt and performance. Researchers and practitioners with real knowledge and experience presented the latest information on PPA modification and performance characteristics. The workshop agenda was developed to promote interactive discussion between presenters and participants. To establish a reference ...

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Polyphosphoric Acid Modification of Asphalt - Darrell Fee ...

01/01/2010  Laboratory data for the materials tested show that the performance of PPA-modified asphalt can be improved with the addition of antistrip agents such as a phosphate ester, a particular polyamine compound, and hydrated lime. These findings hold true for cases where modification includes the use of polymers: styrene–butadiene–styrene and Elvaloy. References. 1. Burk, R. E. , and

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Influence of polyphosphoric acid (PPA) on properties of ...

PPA modification of asphalt is not a new concept as asphalt binders have been chemically modified with PPA to improve high temperature rheological properties without adversely affecting low ...

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Innophos to Present the Science of Polyphosphoric Acid ...

19/01/2021  Additionally, Kevin will share best practices and benefits of PPA usage. ... When liquid asphalt is modified with PPA to achieve a higher performance grade, not all

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Using Polymer Modified Asphalt Emulsions in Surface ...

and contraindications of polymer modified asphalt emulsions (PME); 6. Perform laboratory testing and verification to evaluate the recommendations and data gaps identified from the analysis of information obtained from the literature review; and, 7. Prepare a Federal Lands Highway (FLH) manual of best practices for polymer modified asphalt ...

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Best Practices for Polyphosphoric Acid Modification of ...

07/04/2009  Best Practices for Polyphosphoric Acid Modification of Asphalt: Phosphate Forum of the Americas. Polyphosphoric acid (PPA) has been proven as a successful modifier for asphalt concrete (AC) either by itself or in combination with polymers. On its own, PPA increases the high-temperature performance of AC, as measured by the performance grade (PG) system, with no loss, and

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Performance of Asphalts Modified with Polyphosphoric Acid

ArDOT does not allow the use of PPA in asphalt, some suppliers may use it due to its economical advantages. The objective of this study was to find out short-term and long-term performance of asphalts modified with PPA. To evaluate the performance of PPA-modified binders, mechanistic, chemical and moisture susceptibility tests were conducted in laboratories on both asphalt binders and asphalt ...

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The Use and Performance of Asphalt Binder Modified with ...

The Use and Performance of Asphalt Binder Modified with Polyphosphoric Acid (PPA) This Technical Brief provides an overview of the implication of the use of Polyphosphoric Acid as a modifier for asphalt binders and implications in relation to asphalt pavement performance. Background . The modification of asphalt binder to improve performance properties has grown significantly since the ...

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Polyphosphoric Acid Modification of Asphalt - Darrell Fee ...

01/01/2010  Laboratory data for the materials tested show that the performance of PPA-modified asphalt can be improved with the addition of antistrip agents such as a phosphate ester, a particular polyamine compound, and hydrated lime. These findings hold true for cases where modification includes the use of polymers: styrene–butadiene–styrene and Elvaloy. References. 1. Burk, R. E. , and

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Influence of polyphosphoric acid (PPA) on properties of ...

PPA modification of asphalt is not a new concept as asphalt binders have been chemically modified with PPA to improve high temperature rheological properties without adversely affecting low ...

Get Price

Using Polymer Modified Asphalt Emulsions in Surface ...

and contraindications of polymer modified asphalt emulsions (PME); 6. Perform laboratory testing and verification to evaluate the recommendations and data gaps identified from the analysis of information obtained from the literature review; and, 7. Prepare a Federal Lands Highway (FLH) manual of best practices for polymer modified asphalt ...

Get Price

Recommended Practices for Crack Sealing HMA Pavement

including: Chapter 4 of the Best Practices Handbook on Asphalt Pavement Maintenance (Mn/DOT, 2000), the Guidelines for Sealing ... Polymer-modified asphalt emulsion or AC-3 should not be used for crack filling. Tests show that polymer-modified emulsion becomes brittle at -13.8 oC (7 oF) and AC-3 becomes brittle at -2.5 oC (27.5 oF). Mn/DOT sealant typically performs well down to -34 oC (-29 oF ...

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Alternate Binder Modifiers - Purdue University

• Add small amount of PPA to tank and stir (0.2% - 0.3%) • Typically four-hours from Elvaloy® addition to ready for aggregate. 7. New Offering: Entira™ Bond 12 . Benefits: • Entira™ Bond asphalt modifier works with SB/SBS modifiers and sulfur – no PPA • Typically replace half of the SB/SBR/SBS polymer with half as much Entira™ Bond. ¾. For example, 4% SBS would be with 2% SBS ...

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NAPA Webinar: Beyond the Basics: Modified Asphalt ...

NAPA Webinar: Beyond the Basics: Modified Asphalt. 4/1/2020 Webinar 1:00 p.m. - 2:30 p.m. Add to Google Calendar Add to Outlook Calendar. The use of additives in asphalt mixtures has become more common over the past two decades. Two of the most common modifiers which have been used to enhance the stability and durability of asphalt binders are polymers such as styrene-butadiene

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An overview of storage and handling of asphalt Asphalt ...

An overview of storage and handling of asphalt. By Dwight Walker, P.E. and John Davis. Long-lasting, low maintenance asphalt pavement performance begins with using an asphalt binder that has uniform properties, including consistency and temperature. The manner in which the asphalt is handled and stored is critical to achieving this goal.

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Performance of Asphalts Modified with Polyphosphoric Acid

ArDOT does not allow the use of PPA in asphalt, some suppliers may use it due to its economical advantages. The objective of this study was to find out short-term and long-term performance of asphalts modified with PPA. To evaluate the performance of PPA-modified binders, mechanistic, chemical and moisture susceptibility tests were conducted in laboratories on both asphalt binders and asphalt ...

Get Price

Best Practices for Polyphosphoric Acid Modification of ...

07/04/2009  Best Practices for Polyphosphoric Acid Modification of Asphalt: Phosphate Forum of the Americas. Polyphosphoric acid (PPA) has been proven as a successful modifier for asphalt concrete (AC) either by itself or in combination with polymers. On its own, PPA increases the high-temperature performance of AC, as measured by the performance grade (PG) system, with no loss, and

Get Price

The Use and Performance of Asphalt Binder Modified with ...

The Use and Performance of Asphalt Binder Modified with Polyphosphoric Acid (PPA) This Technical Brief provides an overview of the implication of the use of Polyphosphoric Acid as a modifier for asphalt binders and implications in relation to asphalt pavement performance. Background . The modification of asphalt binder to improve performance properties has grown significantly since the ...

Get Price

Influence of polyphosphoric acid (PPA) on properties of ...

PPA modification of asphalt is not a new concept as asphalt binders have been chemically modified with PPA to improve high temperature rheological properties without adversely affecting low ...

Get Price

Recommended Practices for Crack Sealing HMA Pavement

including: Chapter 4 of the Best Practices Handbook on Asphalt Pavement Maintenance (Mn/DOT, 2000), the Guidelines for Sealing ... Polymer-modified asphalt emulsion or AC-3 should not be used for crack filling. Tests show that polymer-modified emulsion becomes brittle at -13.8 oC (7 oF) and AC-3 becomes brittle at -2.5 oC (27.5 oF). Mn/DOT sealant typically performs well down to -34 oC (-29 oF ...

Get Price

Alternate Binder Modifiers - Purdue University

• Add small amount of PPA to tank and stir (0.2% - 0.3%) • Typically four-hours from Elvaloy® addition to ready for aggregate. 7. New Offering: Entira™ Bond 12 . Benefits: • Entira™ Bond asphalt modifier works with SB/SBS modifiers and sulfur – no PPA • Typically replace half of the SB/SBR/SBS polymer with half as much Entira™ Bond. ¾. For example, 4% SBS would be with 2% SBS ...

Get Price

NAPA Webinar: Beyond the Basics: Modified Asphalt ...

NAPA Webinar: Beyond the Basics: Modified Asphalt. 4/1/2020 Webinar 1:00 p.m. - 2:30 p.m. Add to Google Calendar Add to Outlook Calendar. The use of additives in asphalt mixtures has become more common over the past two decades. Two of the most common modifiers which have been used to enhance the stability and durability of asphalt binders are polymers such as styrene-butadiene

Get Price

Developing Slurry Seal Performance Models for Pavement ...

polymer modified or conventional emulsified asphalt, graded aggregates, water, and other additives, such as mineral filler as shown in Figure 1. Based on the Manual for Slurry Surfacing published by the Mineta Transportation Institute (MTI), a slurry seal is “ a cost-effective maintenance treatment used for public roads, highways, airport runways, parking lots, and a variety of other ...

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An overview of storage and handling of asphalt Asphalt ...

An overview of storage and handling of asphalt. By Dwight Walker, P.E. and John Davis. Long-lasting, low maintenance asphalt pavement performance begins with using an asphalt binder that has uniform properties, including consistency and temperature. The manner in which the asphalt is handled and stored is critical to achieving this goal.

Get Price

AsphaltPro Magazine 7 Top Tips ... - Asphalt Paving News

The team at Coastal Bridge in Port Allen produces modified mixes in long, steady runs to get optimum efficiency. Photo courtesy Coastal Bridge. At the 41st annual Asphalt Contractors of Florida Association (ACAF) meeting at the end of November, Duval Asphalt’s T.J. Young presented the industry mix production best practices as determined by a working group in the state. Young served on the ...

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