Mix Design Methods for Asphalt Concrete, by The Asphalt Institute. Page 3 Standard Construction Specifications Division 40 – Asphalt Surfacing Revised 11/08 The number of blows of the Compaction hammer used in the Marshall Mix Design will be fifty (50) blows per side of specimen.

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George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 10.4.3.2 Porous pavement. Steel slag is an excellent aggregate for porous asphalt mixes. Porous HMA can be 45–55 mm thick, and placed over an impermeable layer to protect underlying layers from the penetration of water. A dense layer is normally required beneath the porous asphalt layer.

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Porous asphalt is a pilot material that the city is testing at select locations. Use of this material beyond the city-led pilots will require a maintenance agreement. Can be proposed for use in parking lanes, parking lots, and recreational paths. Must have adequate sub-surface conditions to detain stormwater and level bottom to allow for ...

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RAP or shingles, is not allowed. Design asphalt content by weight shall be in accordance to MnDOT 2360 (Table 2360.2E (as modified below), Table 2360.3-B2a and Table 2360.3-B2b) S-1.1 DESCRIPTION This work consists of the construction of a Porous Hot Mix Asphalt Wearing Course Mixture (Porous HMA).

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POROUS ASPHALT MIX DESIGN Department of Ecology Statewide LID Training Program October 20, 2014 7 •Committee is working on a WSDOT format specification for porous asphalt (Jessica Knickerbocker, City of Tacoma lead) •Interesting developments, particularly in trying to establish optimum compaction effort.

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Types of Pervious Concrete. There are multiple types of permeable concrete, all of which are used for different purposes: Porous Asphalt is used on highways to remove excess water. Single-Sized Aggregate contains no binder and is commonly known as loose gravel. It can commonly be seen in very low-speed applications such as driveways or pathways.

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(v) IS EN 13108-7 Bituminous Mixtures - Material Specifications - Porous Asphalt (vi) IS EN 13108-8 Bituminous Mixtures - Material Specifications - Reclaimed Asphalt (vii) IS EN 13108-20 Bituminous Mixtures - Material Specifications - Type Testing (viii) IS EN 13108-21 Bituminous Mixtures - Material Specifications - Factory Production

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Porous Asphalt Pavement Mixtures Design Criteria Mix N design Air Voids @ N design PG Binder Content VCA mix 2 Draindown of Uncompacted Asphalt Mixtures, AASHTO T305, maximum Mixing and Compaction Temperature Range4 °F Top Course 50 20.0 5.5 % minimum Less than VCA drc 3 0.3 % 285°F - 325°F Binder

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Porous asphalt pavement for stormwater management. Traditionally, pavements are designed to allow rainfall and runoff to flow along the pavement surface, draining into adjacent catch basins and/or ditches of roads or parking lots. Porous asphalt pavement, on the other hand, is a type of type porous pavement structure specifically designed to ...

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Porous asphalt pavements can be installed as a whole or in part alongside of traditional impervious asphalt pavements. The design for application of porous asphalt consists of at least four layers: A two to four-inch layer of asphalt. Porous asphalt consists of bituminous asphalt, which has been screened and the fines reduced.

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Porous asphalt mixture (PAM) is an indispensable pavement material for the construction of sponge city with low-cost and environment friendly characteristics, which conducive to replenishing urban ...

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Mix Design Class ½ HMA PG 70-22 Binder content shall be between 6.0% and 7.0% Void ratio of 16% to 25% Percent of two face fracture shall be greater than 90%. March 2015 Porous Asphalt -The Specs Washington Asphalt Paving Association 7 Sieve Size

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The general guidelines for the porous asphalt pavement design are: Consider the location for porous pavements early in the site design process. Soil infiltration rates of 0.1 to 10 inches/hour work best. Minimum depth to bedrock or seasonal high water should be greater than two feet. The bottom of the infiltration bed should be flat to maximize ...

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POROUS ASPHALT: DESIGN AND PERFORMANCE GOALS 1. Properly integrated into site design 2. Permeable wearing course 3. Flexible Pavement Section designed for saturated subgrade conditions 4. Pavement designed to infiltrate of rainfall 5. Pavement depth sufficient to eliminate frost heave 6. Durable, long lasting wearing course 7.

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media beds, and porous asphalt mix (mix) design, production, and installation. Porous media beds refer to the material layers underlying the porous asphalt pavement. Porous asphalt pavement refers to the compacted mix of modified asphalt, aggregate, and additives. C. The porous asphalt pavement specified herein is modified after the National ...

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Porous Asphalt Soil subgrade 4 in. (100 mm) thick No. 57 stone open‐graded base No. 2Typ. stone subbase – thickness variesthick with design Optional geotextile on bottom and sides of open graded base 3 to 6 in. stone for overflow drainage Porous asphalt, Typ. 3 in. (75 mm) thick

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What is a Porous Asphalt BMP? A Porous Asphalt BMP is a BMP where the surface is composed of an asphalt open-graded friction course (OGFC) manufactured with larger-diameter aggregates to achieve an effective porosity of approximately 19% (by UNHSC Spec.). This OGFC is underlain with a subbase composed of larger-diameter aggregates.

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Structural Design Guide for Porous Asphalt is now available. Porous asphalt pavements are a green infrastructure solution that provides the performance, ease of construction, and functionality of traditional asphalt pavements but with a permeable structure that …

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Figure 6: Standard bituminous patch in porous asphalt parking lot. This lot was constructed with an unmodified porous mix (i.e. no polymer modification) and had rutted in the center of the aisle due to construction traffic. 5

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Porous asphalt concrete (PAC) is an open-graded friction course that is specifically designed to have high air void contents for removing water from the pavement surface. PAC surfaces, which include open-graded friction courses, permeable friction courses, and drainage asphalt pavements, have increasingly gained acceptance among agencies and industry in the world. PAC …

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This specification is intended to be used for porous asphalt pavement in parking lot applications. Stormwater management functions of porous asphalt installations include water quality treatment, peak flow reduction, storm volume reduction via groundwater recharge, and increased time lag in

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ULTIDRIVE POROUS is a fast-draining porous asphalt solution for driveways, footpaths and small parking areas. It combines excellent drainage characteristics with proven long term durability. It is a hard wearing porous asphalt that eliminates the problem of surface water whilst meeting relevant local planning requirements.

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specifications available for porous asphalt mixes. These include NAPA publication IS-115, Design, Construc-tion, and Maintenance of Open-Graded Asphalt Friction Course. The following key properties should be included as part of the specification: n Air voids: 16 percent minimum –

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Porous Asphalt Pavements, Information Series 131 (2003) and Design, Construction, and Maintenance of Open-Graded Friction Courses, Information Series 115 (2002). D. Alternative specifications for mix, such as Open Graded Friction Courses (OGFC) from Federal

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This test method can be used on porous asphalt and PICP. Porous asphalt installation. The following has been excerpted from the Minnesota Asphalt Pavement Association (MAPA 2012) and from the National Asphalt Pavement Association (Hansen 2008). These documents should be reviewed for detailed specifications. Use PG 58-28 or PG 64-22 asphalt binder.

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Porous Asphalt Pavement Mixtures Design Criteria Mix N design Air Voids @ N design PG Binder Content VCA mix 2 Draindown of Uncompacted Asphalt Mixtures, AASHTO T305, maximum Mixing and Compaction Temperature Range4 °F Top Course 50 20.0 5.5% Minimum Less than VCA drc 3 0.3 % 285°F - 325°F Binder

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NCDEQ Stormwater Design Manual _____ C-5. Permeable Pavement 8 Revised: 4-6-2017 Porous Asphalt (PA) PA is like conventional (impervious) asphalt except that less fine material is used in the mixture to provide for drainage, resulting in has a coarser appearance than conventional asphalt.

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Porous asphalt pavements can be installed as whole or in part with traditional impervious asphalt pavements. When installed in combination with impervious pavements or adjacent to building roofs, porous asphalt can sufficiently contain and treat the additional runoff generated. Design of Porous Asphalt Pavements

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Porous asphalt pavement is a storm water management solution that reduces storm water runoff, improves water quality, and reduces the footprint for storm water management systems. This presentation discusses the need for porous pavement, the design of the storm water management system, the system components and materials, and the construction of porous asphalt pavement to […]

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Porous asphalt pavements can be installed as whole or in part with traditional impervious asphalt pavements. When installed in combination with impervious pavements or adja-cent to building roofs, porous asphalt can sufficiently contain and treat the additional runoff generated. Design of Porous Asphalt Pavements

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