Boisvert From Roofs To Roads - Connecticut
A “Greener” New Hampshirethrough SustainabilityFrom Roofs To RoadsNH Asphalt Shingle Specification andProducer Qualification CriteriaDenis M. Boisvert, P.E.NHDOT Chief of Materials TechnologyCT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsOutline Asphalt terminologyConcerns with using recycled binderShingles in the NH Paving IndustryAsphalt shingle componentsNHDOT shingle specification developmentNHDOT recycled shingle supplier qualificationCT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsAsphalt Terminology Hot Mixed Asphalt (HMA): Hot mixture ofasphalt binder (liquid) and stone aggregateused to make asphalt pavements. Recycled Asphalt Shingles (RAS) : Roofshingles from either post-consumer (tear-off)or manufacturing waste sources.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsAsphalt Terminology Recycled Asphalt Pavement (RAP): Oldasphalt pavement that is incorporated intonew asphalt mix. Replacement Binder – recycled asphaltbinder from RAS or RAP that is replacingsome of the virgin binder in HMA. Performance Grade Asphalt Binder isspecified based on performance within atemperature range.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsConcerns with Using Recycled Binder: Oxidation hardens binder as it ages, causing it tobe more prone to cracking in cold temperatures.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsConcerns with Using Recycled Binder: Oxidation hardens binder as it ages, causing it tobe more prone to cracking in cold temperatures. Asphalt from shingles is much harder than HMAbinder grades used in New England.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsConcerns with Using Recycled Binder: Oxidation hardens binder as it ages, causing it tobe more prone to cracking in cold temperatures. Asphalt from shingles is much harder than HMAbinder grades used in New England. Adding large percentages of age-hardenedrecycled binder to new mix requires selection ofsofter virgin binders to compensate for the harderrecycled binders.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsShingles in the NH Paving Industry: A NH shingle manufacturer has worked withNHDOT to develop a marketable recycled productsince 2007. Paving contractors have used shingles in theprivate sector for 3-4 years. NHDOT has approached the use of shinglescautiously. A single failure of a new technology canmean the end of its use for many years.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsShingles in the NH Paving Industry:New Hampshire is the first state in the Northeastto have a specification allowing the use of bothmanufacturing waste and post-consumer roofshingles in its HMA. NHDOT qualifies RAS Product suppliers to ensureconsistent, quality materials, while protecting publicsafety. CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsThe National Annual Shingle Waste Stream(why it is worthwhile) 1 Million Tons of manufacturing waste. 10 Million Tons of tear-offs (post-consumer waste).CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsWhat is Manufacturing Waste? Sheet end and tab trimmings from themanufacture of new shingles, containing: 25-30% asphalt binder; stiffer grade thanin HMA. 40-60% fine aggregate (retained on No. 30and No. 60 sieves). 3-12% asbestos-free fiber. No contaminants.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsIs it possible to use too much?CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsProbably This is 100% RAS Pavement.Parking Lot in Savannah, GeorgiaCT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsProbably This is 100% RAS Pavement.Parking Lot in Savannah, GeorgiaCT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsWhat Are Tear-offs?Old Shingles from single and multi-layered roofsCT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsWhat’s In Tear-off Shingles?Similar to Manufacturing Waste, But: Asphalt binder is additionally hardened from30 /- years of exposure. Nails, wood, metal and other debris must beremoved before use. Many pre-1980s shingles contain asbestos.Separation and Preliminary ProcessingCT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsWhat’s In Tear-off Shingles?The final product may contain up to 24% dust, afactor affecting HMA mix designs.Final Grinding ProcessCT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsHMA – RAS Specification Development NH specification approved Spring 2009. RAS is measured as % reused asphalt binderfrom shingles; max. 0.6% of the mix ( 10% ofbinder). It can be used alone or combined withRAP binder. Specification is blind to RAS source; postconsumer or manufacturing waste. Compositebinder must meet specified grade.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsRAS Supplier Qualification Development began summer 2009; completed inJanuary 2010. NH was invited to join MA Asphalt Shingles WorkGroup, consisting of MASS DOT, MASS DEP andseveral recycled shingle suppliers. Solicited Work Group’s input on crushed shinglegradation and asbestos management plan.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsRAS Supplier Qualification MA & NH worked closely to develop what could bea regional model qualification for RAS suppliers. Broad use of the same qualification process wouldallow the same RAS product to be used in multiplestates. NH has qualified 2 RAS product suppliers; 1 in MAand 1 in NH.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsElements of RAS ProductSupplier Qualification1.Asbestos managementplan; a certified asbestosinspector must checkevery incoming load.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsElements of RAS Supplier Qualification2.Supplier must have appropriate environmentalpermits from its resident State.3.Must meet requirements of AASHTO MP 15,guiding max. particle size (1/2”), addition ratesto HMA and deleterious substances.4.RAS product meets specific gradationrequirements.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roof to RoadsRAS product ready for use in HMACT DEEP Stakeholder MeetingJuly 11, 2011
TRB Mix Design CriteriaMax.%RAPBinderMax %RASProductBinderMaxCombined% TRBApplication Requirementsa. Composite binder must meetspecified PG grade. Split sample testingto verify compliance of design.b. Test RAP & RAS product for gradationand AC% every 1,000 & 500 tons,respectively.1.5*0.61.0-1.5* c. Only allowed for binder & base courses.d. Cover RAP stockpiles.e. Only allowed in a drum mixer.f. Run split samples at start of production,and every 10,000 tons for composite bindertesting.* Equivalent to 37.5% RAP at 4% AC.
From Roof to RoadsRAS Hot Mix Asphalt Mix Design AASHTO PP 53 used as a guideline. Contractor develops mix design and submits toNHDOT for approval prior to Jan. 1. Only 1 contractor has worked on a RAS mixdesign. No RAS HMA has been approved or placed forNHDOT to date.CT DEEP Stakeholder MeetingJuly 11, 2011
From Roofs To RoadsContact Info.:Denis M. Boisvert, P.E.NHDOT Chief of Materials TechnologyDboisvert@dot.state.nh.us (603) 271-3151RAS Supplier elopment/materials/documents.htmQuestions?
Asphalt Terminology Recycled Asphalt Pavement (RAP): Old asphalt pavement that is incorporated into new asphalt mix. Replacement Binder–recycled asphalt binder from RAS or RAP that is replacing some of the virgin binder in HMA. Performance Grade Asphalt Binderis specified based on performance within a temperature range.
Roads in Malaysia are classified into two broad categories, namely Federal Roads and State Roads. 2.1 Federal Roads Federal roads are all roads declared under the Federal Roads Ordinace (1959) and the major interurban roads joining the state capitals and roads leading to points of entry to and exit from the country.
the Municipalities buildings. Green roofs are also a part of the city’s Strategy for Biodiversity. Since 2010 green roofs are mandated in most new local plans. A calculation based on approved new local plans mandating green roofs gives a total of 200.000 m2 of green roofs to be installed. Today The
In Revit, roofs are a type of building element, just like walls and floors. You can design any type of roof for a building model using Revit Architecture. Definition of Roofs Roofs are building components that represent different types of actual roofs on a building. You can create roofs from footprint outlines, as extrusions, or from mass .
ROOFING LASHING N HIMNEYS INTRODUCTION 1.0 Roofing SLOPED AND FLAT There are two main categories of roofing systems: sloped roofs and flat roofs. Roofing profes-sionals call these steep roofs and low sloped roofs. Sloped roofing systems are not watertight; they shed water with overlapping shingles or tiles. Flat roofs, on the other hand, are water-
1 DESIGN STANDARDS FOR INDUSTRIAL ROADS 1.1 Design Standards 1.1.0 Industrial Estate Roads have been categorised as follows: i. Major Industrial Roads (Major IR) ii. Minor Industrial Roads (Minor IR) In general only culs-de-sac of less than 200m in length should be considered as Minor Industrial Roads with all others being Major Industrial Roads.
Officer Simmons, Walsh, and Bob Boisvert from DCYF, interviewed Misty in the school principal's office. Boisvert gave Misty anatomically correct dolls and reviewed her knowledge of, and terminology used in reference to the dolls' genitalia. Then, asking her to pretend that the female doll was "Misty" and
Presentation that describes green roofs and benefits in reducing stormwater. Provides green roof case studies and an overview of tools and resources for green roofs. Keywords: Green Roofs, Stormwater Management, Urban
MOUNT ASPIRING COLLEGE DEPARTMENT OF ENGLISH - FEMINIST LITERARY CRITICISM - PAGE !3 OF !7. WHAT MARXIST CRITICS DO TAKEN FROM BEGINNING THEORY, BY P. BARRY2: 1. They make a division between the ‘overt’ (manifest or surface) and ‘covert’ (latent or hidden) content of a literary work (much as psychoanalytic critics do) and then relate the covert subject matter of the literary work to .
