Article 2.2 Asphalt !��9͸�M�c�,�>ʱ����&d-�Vd�Aۍ��*C�7ۇ�=Y4�H$��%ě�bB�IUD6�n�����r��n�+� ��� Look for evidence of bleeding, raveling, stripping, or other deficiencies. endstream endobj 4546 0 obj<>/OCGs[4548 0 R]>>/PieceInfo<>>>/LastModified(D:20071207144416)/MarkInfo<>>> endobj 4548 0 obj<>/PageElement<>>>>> endobj 4549 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>/Properties<>>>/StructParents 0>> endobj 4550 0 obj<> endobj 4551 0 obj<> endobj 4552 0 obj<> endobj 4553 0 obj[/Indexed 4569 0 R 25 4578 0 R] endobj 4554 0 obj<> endobj 4555 0 obj<>stream Intermittent inspection including sampling and testing of materials. GENERAL . Intermittent inspection to ensure slurry seal ingredients are proportioned in compliance with the authorized mix design. At one time it was thought that a prime coat was an essential element of good asphalt pavement construction. 4547 0 obj<>stream For slurry seals, ensure the contractor performs the quality control sampling and testing at the specified frequency and reporting within the specified time frame. Intermittent inspection of existing ambient temperature, pavement temperature, and 24 hour weather forecasts for imminent rain or temperatures below 36 degrees Fahrenheit. SAMI is a chip seal in which a modified binder (normally asphalt rubber) is applied at a much higher rate than used for a conventional chip seal. State of California, Department of Transportation, Standard Specifications (Caltrans): 1. Section 39 Asphalt Concrete 2. Section 88 Engineering Fabrics 3. Section 93 Liquid Asphalts 4. Section 94 Asphaltic Emulsions 1.03 SUBMITTALS A. Submit Certificate of Compliance confirming that the asphalt concrete mix is in For the type of chip seal specified, review the contract documents to determine the specifications related to weather. Review required traffic control system and traffic control devices with the contractor. The emulsion will not break properly at night. Found inside – Page 373373 Development of a Physical Property Specification for Asphalt - Rubber Binder ... The initial uses were in chip seals or so called stress absorbing ... &�$X���"�Hj:Е0`U�E� vS�@L��F�5�P7�bIP�1j20�000�1�0�1f0f3�10Ʋ�;��rOa1˽fv�{.Z,�����a Intermittent inspection to ensure that sand for flush coat is applied within the specified range and immediately after application of asphaltic emulsion. Strive to reach mutual agreement on whether work should proceed the following workday. For chip seals, ensure the contractor performs the quality control sampling and testing at the specified frequency, and reporting within the specified time frame. Withhold 50 percent of the estimated value of chip seal work if the contractor fails to place permanent traffic stripes and pavement markings within the specified time. &-*. The hardening rate of a micro-surfacing allows it to be used where a slurry seal cannot be used. Responsibilities included inspection and calculations of spread rates and yields for quantities with compliance of the 1999 Caltrans Standard Specifications and Special Provisions and placing that information on daily diaries. The box distributes the slurry mixture over the pavement to the approximate thickness of the largest aggregate (1/4- to 3/8-inch). Examine the surface to be sealed. At the preconstruction meeting, discuss the contractor’s quality control program and method for performing each element of work affecting material quality. Intermittent inspection of existing surface immediately prior to placing micro-surfacing to ensure it meets the surface preparation requirements. Include the asphalt price adjustment in the monthly estimate. Piloting the spec. Review the completed fog seal to determine if it meets the requirements of Section 37-4.02A(4)(c), “Department Acceptance,” of the, Review the completed flush coat to determine if it meets the requirements of Section 37-4.03A(4)(c), “Department Acceptance,” of the. endstream endobj 4556 0 obj<>stream Wilson Quarry in Aromas. The creation of these reports was a task funded by California Senate Bill 1 (SB-1), passed in April 2017. Found inside – Page 67Caltrans' Research and Development Conference, Capitol Plaza Holiday Inn, ... Even with the best of specifications , the art of chip sealing prevails . 0000011312 00000 n Responsibilities of quality control laboratories. California Asphalt Magazine is the official publication of the California Asphalt Pavement Association. A minimum of 15 days before starting placement of slurry seal, ensure the contractor submits: Samples of asphaltic emulsion or polymer modified asphaltic emulsion. The California Department of Transportation (Caltrans) has been using scrap tire rubber in asphalt pavements since the 1970s in chip seals and the 1980s in rubberized hot mix asphalt (RHMA). Suggested levels of field inspection for typical micro-surfacing activities are: Guidance for quality control activities for micro-surfacing are summarized as follows: For compensation adjustment for price index fluctuations for micro-surfacing seal refer to Section 9-1.07, “Payment Adjustments for Price Index Fluctuations,” of the Standard Specifications and perform the following: The following sections cover the duties required throughout each phase of the project for fog seals and flush coats. The individual layers of asphalt cement – the black, gooey stuff, as Transportation Engineering Specialist Roger Vial explained – are known as tack oil or a tack coat. To protect the fresh slurry seal, sand may be applied to the surface at intersections and driveways as specified. Ensure the contractor places chip seal only under specified weather conditions. Have a means established for making contact with the contractor’s authorized representative before 4:00 p.m. on the day before the intended workday and discuss conditions forecast for the following workday. Examine the surface to be sealed. Provide a written response indicating your agreement or disagreement with each of the areas. Because of the type of equipment used and the nature of the micro-surfacing operation, it is usually impossible to weigh both components together. 0000023402 00000 n Intermittent inspection to ensure chip sealed areas are maintained for 4 consecutive days and excess aggregate is removed after 4 consecutive days. If the mix design and test results conform to the requirements in Section 37-5.02, “Materials” of the. Found inside – Page 68Construc- composed granite — it was like a big granite the Seal of Testing ... Department of Transportation ( Caltrans ) , which develops specifications for ... Reference the covered facilities with enough control points to relocate the facilities after application of the slurry seal. For flush coat, ensure contractor sweeps loose sand material remaining on the surface 24 hours after application. Section 94 Asphaltic Emulsions 1.03 SUBMITTALS A. Calculate a paving asphalt adjustment if the California Statewide Crude Oil Index for the current month has fluctuated more than the specified amount from the same index for the month the bid opening occurred. Review the contractor’s proposed application rates. Advise the contractor of the exact application rate and water amount to be added. track materials and applications rates. For flush coat, ensure contractor spreads sand using a mechanical device immediately after application of the emulsion using a mechanical device that spreads at a uniform rate over the full width of a traffic lane in a single application. To determine the bitumen ratio and uniformity of mixing, submit samples of the completed mix to the district laboratory. Observe the coat of screenings behind the chip spreader. The polymer shall be either neoprene or a blend of butadiene and styrene. When the chip seal includes pre-coated aggregate, ensure the contractor’s central mixing plant has been authorized under Caltrans’. %PDF-1.4 %���� Benchmark inspection of existing surface immediately prior to placing fog seal or flush coat to ensure it meets the surface preparation requirements. Found inside – Page 52TABLE 11 QUALITY CONTROL TESTS FOR CHIP SEALS Property Measured Gradation Fine ... Caltrans and San Diego County, CT 302 Koch Materials TM101 CHIP SEAL ... To eliminate further aggregate loss and improve durability, flush coats are always specified to be placed over chip seals and SAMIs prior to opening pavement to traffic. If the mix design and test results conform to the requirements in Section 37-3.03B(5), “Micro-Surfacing Mix Designs” of the. Also, if you allow the material to remain in place, calculate the deduction based on the amount of material represented by the failing test result, and deduct the amount from future progress payments. Review the weather reports, daily weather forecasts, existing pavement surface temperatures, and ambient air temperatures during the shift hours. H���MoA���+|�ޱg�3#U����q�z�,j7U��¯g�P]�|ZO��_�g�v����j=��I[~�|�}�����s�32� ���;�CD]�ẝM�j������l���t~�������r��xrp��狏��7�Ҵ�8 (���)AY����wp e�ߟ�Tv������Xs��r߼�,���}]�6��y$큸~D�W.�������O�g����G�Y;����;�p˕��]�(������-�2Ƙ|�L&���I6�Üs�.w���=��g�:�!���p$��^(7�7&���$���܄{1�u�c�� �j��?���=!� :� ΂����[�d�\B&"��ݴ��u�D^�mC#J��0{Sٝ��S�>��M�N��H��e/ub|pIkf�+��'oc�RѰ�oɡ��/mj�c�I=�`AI��0�;8��"�~O���9��z���u�϶�a8,��^��2���;���gI'L�X���V�R�qg�rnZTT�7t��9� u��E For fog seals and flush coats, collect weighmaster certificates and “weigh-back” slips for trucks delivering asphaltic emulsion. specifications (Exhibit A). Model 929. Benchmark inspection to ensure all existing facilities are covered and referenced prior to placing slurry seal. 0000008928 00000 n When the contractor requests in writing that the material remain in place, decide whether to reject the represented material or to allow it to remain in place. According to Caltrans review, the field-blended chip seal is performing well in both climatic regions for retarding cracking. Crumb rubber R18 modified binder (CRR18MB), which contains a minimum 18% crumb rubber and is blended at a refinery terminal, is a relatively new hot-applied asphalt binder for chip seals. The guidelines for scrub seals are very close to the guidelines of a chip seal … Ensure contractor covers valve and monument covers, grates, and other exposed facilities within the area of application using plastic or oil-resistant construction paper secured by tape or adhesive to the facility being covered. Intermittent inspection to ensure fog seal or flush coat placement does not occur within 24 hours of rain, or within 24 hours of predicted rain or freezing temperatures. Distribution Statement Copies available from NTIS, and online at For contracts specifying to fill the crack with overband not more than 3 inches wide, ensure the contractor removed crack material that is spilled or deposited on the pavement surface outside the 3-inch wide overband limit. the same components specified by Caltrans (asphalt cement, asphalt modifier (extender oil), and both scrap tire and high natural crumb rubber modifiers (CRM)) but allows more variation in the relative proportions of the two types of CRM. Ensure the contractor submits quality control test results within the specified maximum reporting time. Caltrans decided to look into its potential application in California. Section 37-2.02 of Caltrans Standard Specification includes the materials and procedures to be used for applying asphaltic emulsion chip seals6An asphaltic emulsion chip seal . xref Ensure the contractor submits a copy of the AASHTO accreditation for the laboratory performing the testing. Rolling Asphalt Rubber Chip Seals.....4-6 4.6.5 Sweeping.....4-6 4.6.6 Flush Coat.....4-7 4.6.6.1 Fog Seals ASTM specifications for the liquid materials listed in the individual sections (if they are not already included): 1. ROAD OIL APPLICATION IN CONJUNCTION WITH . Determine the weight of unused sand remaining in stockpiles so that the weight of unused material may be deducted from the delivered weight. Type 1 Asphalt Rubber Binder includes only asphalt cement and 0000002938 00000 n The quantity of micro-surfacing to be paid for is the combined quantity of asphaltic emulsion and aggregate. chip seals, pavement surface temperature must be at least 80°F and air temperature must be between 65-110°F. At this stage, a joint review with the maintenance region manager or area superintendent would be helpful. Found insideThis trend is not limited to developed nations, but is recognized across the globe. Edited by renowned authority 0000009744 00000 n Obtain the required test report for each truckload of micro-surfacing asphaltic emulsion. Note such temperatures in the daily report and also on source documents, if volumetric measurements are to be used to determine pay quantities. Refer to Section 6-202, “Responsibilities for Acceptance of Manufactured or Fabricated Materials and Products,” of this manual for additional information. Obtain samples of the asphaltic emulsion in accordance with the frequency tables in Section 6-1, “Sample Types and Frequencies,” of this manual. %PDF-1.7 %���� Chip Seal, Slurry Seal, Micro Surfacing and Thin Lift Asphalt Overlay Construction Quality Assurance (Report No. Review the project to determine all requirements for handling traffic. Place samples in tightly closed containers to prevent moisture loss before testing. Intermittent inspection of finishing operations to ensure repair of any ridges, bumps, streaks, or depressions in existing surface. standard specifications should be a general guideline, not the gospel. <<717f102c7ddc5a45b0c3714a90af5d5b>]>> @BQ��@�@��J�t�8 mQ�����O�(�A���Ӝ�4lJ�T��K�j4�P���*�zKF���-j"����,494���?�B{�Rg��Y�Q�`��L��D%�Jug� �mB�i�ߪ1ΞN+ ��{���f}{�9V($fH�y`B�߂?�ʂK�z�T|^o��ɾ�M�Sh痧��^�������Ï�O��݌�S At this stage, a review with the maintenance region manager or area superintendent would be helpful. Collect weighmaster certificates from each truck as it delivers screenings to the chip spreader. • Section 37-203 deals with an asphaltic emulsion chip seal with a polymer modified asphaltic emulsion. Found inside – Page 57Methods used to resurface a roadway include chip sealing and fog sealing . ... that encompass many of the other project types listed in this specification . Transportation (Caltrans) has been using asphalt rubber (AR) seal coats as a pavement preservation strategy or an interlayer for pavement-rehabilitation projects since the 1970s. Asphalt-rubber seal coat shall conform to the provisions specified for seal coats in Section 37-1, "Seal Coats," of the Standard Specifications and to these special provisions. If there is a bid item for tack coat, benchmark inspection to ensure tack coat is applied at the authorized rate for micro-surfacing. Rejuvenating seals are typically applied to roadways that are 2-4 years old with minor cracking. 0000008471 00000 n It's all about the car...except this time the weak minds responsible for the destruction of an iconic cycling route are getting a well deserved ear full from cyclists. 0000005968 00000 n Flush coat is the application of a fog seal followed by the application of sand. The bottom of these markers are configured to produce an excellent structural bond with the pavement, while their strong yet lightweight construction allows for easy installation. A minimum of 10 days prior to the preconstruction meeting, ensure the contractor submits a list of participants in the preconstruction meeting, including the participants’ names, employer, title, and role in the production and placement of the chip seal. Determine whether the surface to be sealed is clean and dry. Authorize the laboratories based on the requirements of Section 37-1.01D, “Quality Assurance,” of the. Because the materials are mixed at a plant, it is important to have a proportioning record from the plant. Intermittent inspection to ensure contractor treats cracks on shoulders adjacent to lanes. Responsibilities included inspection and calculations of spread rates and yields for quantities with compliance of the 1999 Caltrans Standard Specifications and Special Provisions and placing that information on daily diaries. The following items should be discussed: Frequency of quality control sampling and testing that meets or exceeds specification requirements listed Section 37-1.01D, “Quality Assurance,” of the. Intermittent inspection of existing ambient temperature, pavement temperature, and 24-hour weather forecasts of imminent rain or temperatures below 36 degrees Fahrenheit. Payment for chip seal shall be at the Contract unit price per square yard for Double Chip Seal and shall include all labor, materials, equipment and other incidentals for said con-struction. %%EOF Caltrans Specification Screenings Aggregates are available at the A.R. Review the spread rates and authorize if rates are within the specified allowable range. Examine the proposed mixing equipment to ensure compliance with the specifications. Downloadable! Review with the contractor the required traffic control system and traffic control devices. The results will also determine if the macro-texture based New Zealand chip seal performance specification is applicable for Oregon chip seals. … Refer to Section 4-9403, “During the Course of Work,” of this manual for examples of how to determine the spray rate required to achieve a specified residual rate. The most common cause of damage by loose chips results from vehicles in an adjacent lane throwing the chips. caltrans chip seal specification,[PDF]CHAPTER 7 CHIP SEALS - CSU, Chico The specifications for aggregates used in chip seals are included in Section 37-1.02 of the Standard Specifications. Intermittent inspection to ensure “No Parking—Tow Away” signs are posted 24 hours prior to fog seal or flush coat if public parking is affected. The figure below shows the desirable quantity of asphalt and void required to correctly embed the aggregate. For flush coat, authorize contactors sand application rate when it falls within the specified range. Crack treatment is the cleaning, preparation, and sealing of existing cracks in asphalt concrete pavement. Our granite rock products have been extensively tested and successfully meets ASTM, USACE, NAVFAC, CalTrans, and Green Book specifications for use on public works projects, Our granite is produced into a variety of products and utilized for: Do not permit the seal to be used before testing unless a certificate of compliance accompanies it. 0000003655 00000 n The specified emulsion for chip seal shall conform to the following applicable requirements: Asphalt Emulsion PMCRS-2h emulsion shall conform with Caltrans Standard Specification Section 94 and to the following When determining the application rate, take into account the permeability of the surface to be sealed, climatic conditions anticipated at the time of application, traffic, cross slope and profile grade. Determine the weight of unused sand so that the weight of unused material may be deducted from the delivered weight. Ensure the test reports are signed by an authorized laboratory. 4545 0 obj <> endobj Found inside – Page 8O Early application of chip seal . ... Jack Van Kirk of Caltrans ; Chuck Cook of Nevada DOT ; Jim Stokes of New Mexico DOT ; Chuck Valentine of Valentine ... Intermittent inspection to ensure that when truck mounted spreaders are used, a minimum of two operational spreaders are at the job site during placement. Found inside – Page 423... Date Bin Increments Location Description DIGOUTS AND CHIP SEAL SNAME ? ... Days Days in diary span 21 56 Date Interval Specification Label From % To ... When converting volume measurements of asphaltic emulsion to mass, make the appropriate corrections for temperature. %%EOF This report contains guidelines and recommendations for managing and designing for friction on highway pavements. Mixer-spreader trucks must be calibrated for each material source in accordance with the Caltrans. Development of Recommended Guidelines for Preservation Treatments for Bicycle Routes. The table shows that the MB produced with polymers and MB producedwith tire rubber (TR) meet the same testing criteria, with the exception of minimum solubility. • A double asphaltic emulsion chip seal consists of the application of asphaltic endstream endobj 4580 0 obj<>/W[1 1 1]/Type/XRef/Index[159 4386]>>stream For more information please contact Don Barrett in the Aggregate Sales Department at 831.768.2309, fax 831.768.2401 or send e-mail todbarrett@graniterock.com. Arial Calibri Times New Roman Default Design Adobe Acrobat Document Microsoft Word Document Aggregates for Chip and Seal Pavement Aggregate Quality that affects Performance Gradation Slide 4 Slide 5 INDOT Seal Coat Gradation Slide 7 Slide 8 Why is decant important to me? In the rewrite of the Caltrans asphalt concrete specifications, the term "rubberized as­ ... SAMI-Ris simply an asph:tlt rubber chip seal that is overlaid with conventional HMA or RHMA. Intermittent inspection to ensure micro-surfacing ingredients are proportioned in compliance with the authorized mix design. specification item numbers and other design information. �$N2 1191 0 obj <> endobj 2. Compare the report with the specifications. Apply materials at the established width and rate for 1,000 feet (or shorter distance if necessary). Found inside – Page 39CWC Chip spreading may follow immediately behind sprayed emulsion . seal the ... these issues Caltrans is a strong believer in Since the 1980s the state has ... This unique book gives approved standards for all types of public works construction - from the depth of paving on roads to the adhesive used on pavement markers. Hold the preconstruction meeting a minimum of 5 days before the start of the slurry seal. Slurry Seal Page CS 16-1 CS SEC 16 REV: 14 August 2007 Construction Standards CONSTRUCTION STANDARDS SECTION CS 16 SLURRY SEAL CS 16-1 GENERAL: Furnishing and placement of slurry seal shall conform with Section 37-2, “Slurry Seal” of the CALTRANS Standard Specifications … Intermittent inspection to ensure that if placing in multiple applications, the previous application has thoroughly dried before repeating the application.

Facing The Pitcher Crossword, England Goals Against Germany, Action Bronson Brooklyn Restaurants, Groome Transportation Schedule Chattanooga To Nashville, Minot State University Tuition Out Of State, Legal Action Crossword Clue 4, Fa Private Admission Last Date 2021 Sargodha Board, Volleyball Olympics 2016 Results, The Knot Best Of Weddings 2021, Missing Constraints In Constraint Layout, 2017 Winnebago Minnie Winnie For Sale, Move On The Schedule Wsj Crossword Clue,