caltrans chip seal specifications

0000011312 00000 n The California Asphalt Pavement Association (CalAPA) is a non-profit trade association that represents the asphalt paving industry in California. This is a joint venture with Industry and CalTrans, Office of Pavement Preservation. If this approach is impractical, note on the sample form how many parts of water were added to how many parts of emulsion. Following are limits that may apply to the specified type of chip seal: Minimum ambient air temperature during placement, Maximum ambient air temperature during placement, Minimum pavement surface temperature during placement, Maximum pavement surface temperature during placement, Minimum ambient air temperatures for the first 24 hours after placement, Placement within 24 hours of forecast rain, Placement within 24 hours of freezing temperatures. 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. a rubber-tire roller is used to set the rock into the liquid asphalt.   Rolling orients the flat sides of the rock down and produces a tighter chip seal.   It takes two to four passes of the roller to set the rock. Intermittent inspection to ensure all deliveries of micro-surfacing emulsion have a certificate of compliance. endstream endobj 4556 0 obj<>stream ASTM D2027 / D2027M Cutback Asphalt (Medium Cure Type) 5. Suggested levels of field inspection for crack treatment activities are: Crack treatment is paid for by lane mile measured along the edge of each paved lane parallel to the pavement centerline and includes crack treatment of the adjacent shoulder. Polymer modified asphaltic emulsion data. THE COUNTY’S 2021 CHIP SEAL ROAD MAINTENANCE PROJECT Intermittent inspection to ensure that any irrigation systems adjacent the parking area seal have been shut off for 24 hours after placement of the seal. Recycled tire rubber is. 4545 36 Abstract: This project was a continuation of a previous study that focused on the effects of pavement macrotexture on bicycle ride quality using input from bicycle club members and their bicycles on state highways, and considered changes to Caltrans chip seal specifications that resulted in seals with larger maximum size stones being typically used. Found insideRailway Geotechnics covers track, track substructure, load environment, materials, mechanics, design, construction, measurements, and management. Illustrated by Refer to Section 6-202, “Responsibilities for Acceptance of Manufactured or Fabricated Materials and Products,” of this manual for additional information. From the weight of screenings to be paid for, do not deduct the weight of excess screenings removed from the roadway and disposed of. in California generally includes applying an asphaltic emulsion, followed by aggregate, and then a flush coat (or fog seal). Verify that the contractor has not opted out of payment adjustments for price index fluctuation at the time of bid. Determine the weight of unused screenings remaining in stockpiles so that the weight of unused material may be deducted from the delivered weight. 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. Examine the surface to be sealed. Examine the proposed equipment to ensure compliance with the specifications and discuss with the contractor the proposed operation. 0000012053 00000 n A minimum of 15 days before starting placement of slurry seal, ensure the contractor submits: Samples of asphaltic emulsion or polymer modified asphaltic emulsion. 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. If the load has been hauled a long distance and job scales are available, it is good practice to weigh the load in using the job scales and, after spreading, to weigh the load out on these same scales. Intermittent inspection of existing ambient and pavement temperatures. A minimum of 10 days before starting slurry seal activities, ensure the contractor submits the names of proposed authorized laboratories for quality control testing. Ensure the certificate of compliance includes all required items. Monitor the mat over 1,000 feet watching for ridging, plugged tips, and chip density. Verify that a certificate of compliance accompanies each load of parking area seal. However, asphalt prime materials and the gradation of aggregate bases have changed over the years and applications of prime are no longer necessary for most asphalt pavements. Ensure the contractor performs the rolling in the specified order and required number of roller coverages. SPECIFICATIONS . Intermittent inspection to ensure asphaltic emulsion for fog seal or flush coat is applied with uniform coverage. Verify that Form CEM-3101, “Notice of Materials to Be Used,” includes seal materials. 7 PASS, Cape Seal, and PASS Rejuvenating Seal Page 2 of 13 concrete gutter edge and concrete cross gutter approximately one (1) to two (2) inches. �3��Z 7.3.2 Chip Seal Design Properly designed chip seals have proven to be cost effective in sealing pavements and providing a new riding surface with enhanced frictional characteristics. Found inside – Page 401For example, the California DOT (Caltrans) Maintenance Technical Advisory Guides for ... Chip Seal Best Practices also provide valuable state-of-the-art ... For the type of chip seal specified, review the contract documents to determine the specifications related to weather (The success of a chip seal is highly dependent on weather related conditions). O.^"��E� Ensure the contractor submits a copy of the AASHTO accreditation for the laboratory performing the testing. For emulsion used in fog seals, it is preferable to take samples of the emulsion before adding water. Intermittent inspection to ensure “No Parking—Tow Away” signs are posted 24 hours prior to micro-surfacing if public parking will be affected. Benchmark inspection to ensure truck mounted spreader or continuous self-loading mixer spreader have been calibrated and comply with the. 6 (medium-graded in conformance with Section 37-1.02 of the Caltrans Standard Specifications) unless otherwise specified. Authorize the laboratories based on the requirements of Section 37-1.01D, “Quality Assurance,” of the. Non-reflective plastic pavement markers - View Specification Document (PDF) Markers are manufactured per ASTM specifications. The following items should be discussed: Review weather reports, daily weather forecasts, existing pavement surface temperatures, and ambient air temperatures during the shift hours. Intermittent inspection of binder application to ensure uniformity of application and spread rate. All bids must include all items in Exhibit A. Type: 929 AY. %%EOF If the mix design and test results conform to the requirements in Section 37-3.03B(5), “Micro-Surfacing Mix Designs” of the. Discuss with the contractor the proposed operation, and determine the method for measuring the weight of aggregate and asphaltic emulsion. For asphalt rubber binder chip seals, surface temperature must be at least 55°F and Key Words chip seal, asphalt emulsion, hot-applied, chip seal design, chip seal specifications : 18. The binder shall conform to the aggregate with ten percent (10%) maximum film stripping as tested by Caltrans Specifications, Section 302. 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. Review laboratory tests from the contractor and determine if the material 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 ... Benchmark inspection of existing facilities, such as valve covers or grates, to ensure all are covered and referenced to relocate after to placing chip seal. Benchmark inspection of slurry seal area 15 days after placement to ensure any areas with bleeding, raveling, separation, or other distresses are repaired. Observe the completed application of screenings and order immediate application of additional screenings or clean sand to cover any excess bituminous binder that rises to the surface. 286935 Specs-3.doc 1 STRIPING AND SIGNAGE 1.01 GENERAL All special event improvement work (including striping and signing work) covered by these special provisions shall conform to the provisions in the State of California Department of Transportation (Caltrans) Standard Plans and Standard Specification (latest version), the CA The results will also determine if the macro-texture based New Zealand chip seal performance specification is applicable for Oregon chip seals. Review the mix design and laboratory tests from the contractor. 0000002044 00000 n Caltrans acceptance does not apply to areas where you agree the existing pavement is defective prior to placement of the chip seal. Chip Seals (SAMs)..2-6 2.3.1.1 Advantages Caltrans specifications for asphalt rubber physical properties fall within the ranges listed in ASTM D 6114, “Standard Specification for Asphalt rubber Binder,” also located in Vol. 7.3.2 Chip Seal Design Properly designed chip seals have proven to be cost effective in sealing pavements and providing a new riding surface with enhanced frictional characteristics. 0000008776 00000 n Calculate on a monthly basis the amount of asphalt used in asphaltic emulsion or polymer modified emulsion including flush coat. Found inside – Page 13Caltrans CIWMB Partnered Research Plant ” . ... not identified and it is not certain whether the CRM came from a RAC mix , chip seal or interlayer ) . Furnish details of those projects on the Reference Form included in Exhibit A. Review the contractor’s proposed application rates. It is one of three new reports prepared by the CP2 Center using SB-1 funding. When screenings are stockpiled before spreading, obtain weighmaster certificates for trucks delivering screenings to stockpiles. Intermittent inspection of existing ambient temperature, pavement temperature, and 24-hour weather forecasts of imminent rain or temperatures below 36 degrees Fahrenheit. 0000002343 00000 n &-*. Found inside – Page 8Placing a chip seal on the CIR mat before winter conditions is essential ... Specifications should preclude sealing the CIR mat if moisture exceeds 1.5 ... %PDF-1.4 %���� Use properly sealed and calibrated metering devices to determine pay quantities. If the crack treatment material is not on the Authorized Material List, obtain samples and authorized laboratory test results 20 days before use. Decide whether excess screenings should be salvaged and stockpiled or otherwise disposed of, and advise the contractor of the decision. specification item numbers and other design information. Found inside – Page 37-3When more than one type of seal coat is to be applied , the fog seal coat shall ... Screenings shall be spread by means of a self - propelled chip spreader ... that all chip seal emulsion oil materials supplied and delivered meet Caltrans standard Specifications and City requirements. Review with the contractor the required traffic control system and traffic control devices. At this stage, a joint review with the maintenance region manager or area superintendent would be helpful. Calculate on a monthly basis the amount of asphalt used in micro-surfacing emulsion. From the delivered aggregate material, obtain samples and test them for sieve analysis and cleanness value in accordance with the frequency tables in Section 6‑1 of this manual. For the weight of sand to be paid for, do not deduct the weight of sand swept from the roadway. Advise the contractor of test results. Below is on Page 7-4 of Caltrans' MTAG: "Weather Considerations: Cold applied chip seals must be constructed during warm, dry weather and during the daytime only. Chip seals include: asphaltic emulsion chip seals, polymer modified asphaltic emulsion chip seals, scrub seals, asphalt rubber binder chip seals, stress absorbing membrane interlayers (SAMI), and modified asphalt binder chip seals. The quantity of water added for dilution must be based on the judgment and experience of field personnel, but in all cases must result in a residual rate within the specified range. Authorize the laboratories based on the requirements of Section 37-1.01D, “Quality Assurance,” of the. Caltrans Chip Seals SAM ARSC ARAM* Interlayers SAMI SAMI-R ARAMI* Open Graded RHMA-O ARHM-OG RAC-O Open Graded-High Binder ARFC RHMA-O-HB Gap Graded ARAC RHMA-G ARHM-GG* RAC-G Dense Graded RHMA-D ARHM-DG RAC-D * Strategies used in the “Standard Specifications for Public Works Construction” – The “Greenbook”. Apply materials at the established width and rate for 1,000 feet (or shorter distance if necessary). Look for evidence of bleeding, raveling, stripping, or other deficiencies. Intermittent inspection to ensure that within 2 hours of placement, micro-surfacing has set enough to allow traffic on it without exhibiting distress. To protect the fresh slurry seal, sand may be applied to the surface at intersections and driveways as specified. (SVBC has successfully taken steps to ensure that the max size of chip seal in Caltrans' specifications has been reduced, so this won't happen on our roads in the future.) Intermittent inspection to verify that required sweeping is performed the day of the chip seal. Furthermore, even if we tried to make improvements, current Caltrans chip seal specifications do not have a quantifiable indicator to effectively evaluate any improve-ment to the road’s roughness. A decision to allow the material to remain in place must be based on the results of a physical examination of the micro-surfacing. For fog seals and flush coats, collect weighmaster certificates and “weigh-back” slips for trucks delivering asphaltic emulsion. The slurry seal shall be placed on the pavement surfaces as shown on the maps included in these Special Provisions, and as directed by the Engineer. If required under the contract, ensure the pavement surface to be treated has been coated with the specified asphaltic emulsion. To determine the bitumen ratio and uniformity of mixing, submit samples of the undiluted parking area seal material to the district laboratory. Member companies include asphalt producers, asphalt refiners, paving contractors, testing labs, consulting engineers and product suppliers. The California Department of Transportation (Caltrans) has released a report that focuses on the effects of pavement macrotexture on bicycle ride quality using input from bicycle club members and their bicycles on state highways, and considered changes to Caltrans' chip seal specifications. According to Caltrans review, the field-blended chip seal is performing well in both climatic regions for retarding cracking. For both new and substitute mix designs, laboratory report of test results and proposed mix design. Review the spread rates and authorize if rates are within the specified allowable range. Do not permit the emulsion to be used before testing unless a certificate of compliance accompanies it. 7.3.2 Chip Seal Design Properly designed chip seals have proven to be cost effective in sealing pavements and providing a new riding surface with enhanced frictional characteristics. Document the temperatures in the daily report. 17. 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. The acceptable limits are set by the Los Angeles Abrasion Test in the test method AASHTO T 96. The limits vary from 30.0 to 50.0 percent, depending on the classification of the aggregate. The percentage is a measure of the degradation or loss of material as a result of impact and abrasive actions. Advise the contractor of the test results. Have a means established for making contact with the contractor’s authorized representative near the end of the work shift on the day before the intended workday and discuss conditions forecast for the following workday. Ensure each delivery of material includes manufacturer’s heating and application instructions, safety data sheet, and manufacturer’s recommended detackifying agent. Review the project to determine all requirements for handling traffic. Screenings must be placed before setting or “breaking” of the asphaltic emulsion occurs. The mix design report should include comparison of each material’s test result to the specification requirements. • Section 37-203 deals with an asphaltic emulsion chip seal with a polymer modified asphaltic emulsion. Ensure the contractor maintains the chip seal surface for 4 consecutive days after the day aggregate is applied. CALTRANS 2015 SPECIFICATIONS DECEMBER 7, 2017 8:00 AM TO 12:00 PM HALF DAY SEMINAR WHO SHOULD ATTEND This seminar is intended for Municipal and Public Works Officials, consultants, engineers, project managers, inspectors and public works staff involved in paving or maintenance activities like chip seal, slurry seal or cape seals. This project was a continuation of a previous study that focused on the effects of pavement macrotexture on bicycle ride quality using input from bicycle club members and their bicycles on state highways, and considered changes to Caltrans chip seal specifications that resulted in seals with larger maximum size stones being typically used. Because the materials are mixed at a plant, it is important to have a proportioning record from the plant. h�bbd```b``a�@$�t�>D2i�E��d+Xd9�=̞f��ٕ`v�dc�Dz�lF�3��-���m�����bv �(I�?ÿ�' `� A minimum of 10 days prior to the preconstruction meeting, ensure contractor submits a list of participants in the preconstruction meeting, including the participants’ names, employer, title, and role in the production and placement of the parking area seal. Slurry seals are applied with a specialized vehicle with separate compartments for the ingredients and an on-board mixer. A minimum of 10 days before starting slurry seal, ensure the contractor submits laboratory report of test results and the proposed mix design signed by an authorized laboratory. Intermittent inspection of existing temperature and weather conditions to ensure placement of fog seal or flush coat occurs only above minimum pavement and ambient temperature requirements. Micro-surfacing is applied with more advanced equipment than a slurry seal. !��9͸�M�c�,�>ʱ����&d-�Vd�Aۍ��*C�7ۇ�=Y4�H$��%ě�bB�IUD6�n�����r��n�+� ��� Review the latest weather reports, daily weather forecasts, existing pavement surface temperatures, and ambient air temperatures during the planned shift hours. Intermittent inspection to ensure micro-surfacing areas are swept 24 hours after placement without damaging the surface, and that sweeping continues for the 4 days after, unless deemed not necessary by the engineer. Ensure report of test results include the specific materials to be used and show a comparison of test results and specifications. For contracts specifying to fill the crack recessed ¼ inch or flush, ensure the contractor removes crack material that is spilled or deposited on the pavement surface. Advise the contractor of the exact application rate and water amount to be added. This is a very cost effective way to preserve and maintain highway surfaces without the extra expense of slurry, hot mix asphalt and in many cases, cold milling. Caltrans has surveyed the project twice since construction and concluded that the section is performing very well. Intermittent inspection to ensure that cold-applied crack treatment material applied using a distributor kettle meets the requirements. Intermittent inspection to ensure chip sealed areas are maintained for 4 consecutive days and excess aggregate is removed after 4 consecutive days. Ensure the contractor cleans the surface to remove all loose particles of pavement, dirt, and other extraneous material. Ensure the contractor does not spread the binder and screenings more than 2,500 feet ahead of the initial rolling. Obtain the required test report for each truckload of micro-surfacing asphaltic emulsion. Micro-surfacing is similar to a slurry seal except it requires a more advanced polymer modified asphaltic emulsion, a more durable fine aggregate, and a chemical additive. It then summarizes the state-of-the-practice ... (Caltrans), the City of Columbus, Ohio, and the Virginia 0000001794 00000 n specifications (Exhibit A). Intermittent inspection to ensure that sand for flush coat is applied within the specified range and immediately after application of asphaltic emulsion. A minimum of 10 days before starting fog seal or flush coat activities, ensure the contractor submits the names of proposed authorized laboratories for quality control testing. 1. startxref CHIP SEAL DESIGN ANDSPECIFICATIONSFinal ReportSPR 777 CHIP SEAL DESIGN AND SPECIFICATIONSFinal ReportSPR 777byAshley BussMinas GuriguisBenjamin ClaypoolDoug GransbergR. During brooming, ensure lanes adjacent to chip-sealed lanes remain free of loose screenings. 0000003655 00000 n Obtain initial samples of the aggregate, and test for the specified quality characteristics. This setting or breaking is indicated by a change in color from brown to black. Hold the preconstruction meeting a minimum of 5 days before the start of the chip seal work. A minimum of 10 days prior to the preconstruction meeting, ensure contractor submits a list of participants in the preconstruction meeting, including the participants’ names, employer, titles, and roles in the production and placement of the chip seal. Verify the receipt of a certificate of compliance for each load of crack treatment material if it is on the Authorized Material List. 0000006748 00000 n Caltrans’ Asphalt-Rubber Usage Guide (2006) is a great manual for all things pertaining to Asphalt-Rubber Chip and Cape Seals. The box distributes the slurry mixture over the pavement to the approximate thickness of the largest aggregate (1/4- to 3/8-inch). Found inside – Page 322A SAMI is an asphaltrubber chip seal which is placed over the existing ... ARC in the Caltrans design guide is 3.48 cm ( 0.10 ft ) ( Caltrans 1992 ) . The contract contains provisions for deducting funds from contract payments to pay for damage claims. some typical specifications for chip seals and slurry surfacing used for cape seals. ASTM specifications for the liquid materials listed in the individual sections (if they are not already included): 1. One type of seal coat is hot-applied chip seal, which includes placing a spray of hot asphalt binder followed by a … 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. 0000002984 00000 n As specified, order the contractor to protect fresh slurry seal from traffic damage. Verify that Form CEM-3101, “Notice of Materials to Be Used,” includes crack treatment materials. 0000007290 00000 n Caltrans specifications for ARB physical properties fall within the ranges listed in ASTM D 6114, "Standard Specification for Asphalt Rubber Binder," also located in Vol. Obtain the name of the laboratory authorized to perform International Slurry Surfacing Association tests and mix design. 4.03. The figure below shows the desirable quantity of asphalt and void required to correctly embed the aggregate. 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. As a result, public traffic and roller tires will pick up the chips. 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. Caltrans specifications and, therefore, are not responsible for a defect due to an “inadequate specification” (given the project condition). Agree on a nonworking day when weather prevents work from proceeding. Learn more about CalAPA on our website. At the preconstruction meeting, discuss the contractor’s quality control program and method for performing each element of work affecting material quality. Found inside – Page 4This course policy , specifications , field investigations , the Pavement Preservation Task will ... chip seals , tion Conference , which will be held April ... Look for evidence of bleeding, raveling, stripping, or other deficiencies. Many countries have developed rational chip seal design methods and, as a result, have used chip seals on major highways. Do not permit the emulsion to be used before testing unless a certificate of compliance accompanies it. Review the mix design and laboratory tests submitted by the contractor before start of the placement. Obtain the name of the authorized laboratory in charge of laboratory report and mix design testing. rolling is much more critical on hot applied chip seals compared with conventional chip seals. Review the project to ascertain all requirements for handling traffic. Flush coat is the application of a fog seal followed by the application of sand. A minimum of 15 days before starting parking area seal, ensure contractor submits a 20-pound sample of the aggregate to be used. When additional water is added to asphaltic emulsion, calculate the amount to be deducted from the original weight, using the ratio in the original mix of asphaltic emulsion to water. Section 94 Asphaltic Emulsions 1.03 SUBMITTALS A. 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. For fog seal and flush coat, ensure the contractor performs the quality control sampling and testing at the specified frequency and reports results within the specified time frame. State of California, Department of Transportation, Standard Specifications (Caltrans): 1. The major difference between slurry seal and micro-surfacing is in how they break or harden. Screenings for double chip shall be graded in conformance with Section 37-1.02 of the Caltrans Standard Specifications: 1 Ensure contractor submits quality control test results within the specified maximum reporting time. Review weather reports, daily weather forecasts, existing pavement surface temperatures, and ambient air temperatures during the planned shift hours. If different, but within the contract required range of spread rates, document the contractor’s reasoning in the daily report and re-authorize the spread rates. Ensure both acceptance testing and reporting to the contractor are performed at frequencies listed in Chapter 6-1, “Sample Types and Frequencies,” of this manual. Found inside – Page 152... Chip Seal Fog Seal Slurry Seal Surface Treatment Microsurfacing Sand Seal Scrub Seal ... Some treatments currently do not have Caltrans specifications . If the chip spreader is moving excessively fast, chips will roll over as they come in contact with the emulsion. 8�ńF��e�5�+vEʏ�>�cx���ݠI. A minimum of 10 days before starting parking area seal, ensure the contractor submits: The name of proposed laboratory to perform mix design. For SR 36, the total cracking was 15 percent of the original cracking. A minimum of 10 days before starting chip seal activities, ensure the contractor submits the names of proposed authorized laboratories for quality control testing. Scrub seal may be applied Review required traffic control system and traffic control devices with the contractor. You may use properly sealed and calibrated metering devices to determine pay quantities. comply with specifications and provide a quality product. The guidelines for scrub seals are very close to the guidelines of a chip seal … Intermittent inspection of sampling and testing of materials. Strategic Preservation work may be completed under Contract or by Maintenance. Ensure contractor submits an aggregate spread rate and bituminous binder spread rate. Intermittent inspection of certificates of compliance for crack treatment material if listed on the Authorized Material List. endstream endobj 4557 0 obj<> endobj 4558 0 obj<> endobj 4559 0 obj<> endobj 4560 0 obj<> endobj 4561 0 obj<> endobj 4562 0 obj<> endobj 4563 0 obj<>stream If you allow the material to remain in place, your decision must be based on the results of a physical examination of the slurry seal. Obtain samples of the asphaltic emulsion in accordance with the frequency tables in Section 6-1, “Sample Types and Frequencies,” of this manual. 2. For fog seal or flush coat, the contractor decides the grade of slow setting or quick setting emulsion and on the dilution rate. Found inside – Page 64There is substantial use of RA based on the CalTrans specifications . ... specialized applications , such as polymerized chip seal on low volume roads .
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