368 Characteristic Test Method ISSA* Requirement Wet Cohesion 30 minutes, min. (set time) 60 minutes, min. (traffic) TB-139** 12 kg-cm 20 kg-cm Wet Stripping, min. TB-114 > 90% Compatibility Classification TB-144 11 pts min. Wet Track Abrasion Loss 60 minutes soak, max. 6 day soak, max. TB-100 538 g/sq m 807 g/sq m Mix Time @ 77°F (25°C) TB-113** controllable to 120 s Mix Time @ 104°F (40°C) TB-113** controllable to 35 s Excess Binder TB-109 538 g/sq m Deformation, max. TB-147 5% * International Slurry Surfacing Association. ** The TB-139 (set time) and TB-113 (mix time) tests shall be checked at the highest temperature expected during construction. For the TB-113 test at 104°F (40°C), all ingredients and containers shall be preheated.
411.04 Equipment The Contractor shall use self-contained, self-propelled, continuous loading units
designed for micro-surfacing. Truck-mounted batch type machines w ill be allowed on projects with quantities less than or equal to 50,000 sq yds. The Contractor shall provide a minimum of two truck-mounted units at all times.
411.05 Pre-Paving Coordination
A pre-paving meeting will be held on-site prior to beginning work. The Contractor shall furnish as a minimum: (a) the Contractor’s detailed work schedule
b.traffic control plan
c.calibration of equipment ( d ) D M F / J M F
e.inspection and evaluation of the condition and adequacy of equipment, including units for transport of materials 90
f.QCP in accordance with ITM 803. CONSTRUCTION REQUIREMENTS
411.06 Preparation of Surfaces The Contractor shall be responsible for all surface preparation necessary to meet
the performance requirements for warranted micro-surfacing. All castings and detector 411.04 369 housings shall be protected prior to the application of material in accordance with 404.07, except that raised pavement markers shall be removed. Any existing durable pavement markings shall be removed in accordance with 808.10 prior to placement of warranted micro-surfacing. Cracks in the pavement in excess of 1/4 in. shall be filled in accordance with 408 prior to placement of warranted micro-surfacing. The pavement surface shall have tack coat applied in accordance with 406 prior to placement of warranted micro-surfacing.
411.07 Opening to Traffic 110
The micro-surface shall be capable of be ing opened to traffic within 1 h after application. If the micro-surface is not st able under traffic loading within 1 h of placement, the Contractor shall immediat ely cease operations. Prior to resuming operations, the Contractor shall notify the Engineer of the cause and the corrective action to be taken. The micro-surface shall be cured a mini mum of five days prior to applying permanent pavement markings in accordance with 808.
411.08 Finished Pavement Properties 120
All finished surface irregularities in excess of 1/8 in. measured with a 10 ft straightedge shall be corrected. The longitudinal construction joints a nd lane edges shall coincide with the proposed painted lane lines. Longitudinal joints shall be constructed with less than a 3 in. overlap on adjacent passes and no more than 1/4 in. overlap thickness measured with a 10 ft straightedge in accordance w ith 409.03(f). If applicable, overlapping passes shall be made to prevent ponding of water. Construct transverse joints with no more than a 1/8 in. difference in elevatio n across the joint as m easured with a 10 ft straightedge. The lane edge shall have no mo re than 2 in. of horizontal variance in 130 100 ft.
411.09 Warranty A warranty bond is to insure completion of required warranty work, including
payments for all labor, materials, equipment, and incidentals necessary or convenient to the successful completion of the project and the carrying out of the duties and obligations imposed by the contract used to remediate any warranted distresses. The Contractor shall furnish a warranty bond at the pre-construction conference or prior to beginning any work on the contract. The warranty bond shall be equal to 140 100% of the contract total for the warranted micro-surfacing pay items, and shall be properly executed by a surety satisfactory to the Department, and shall be payable to 411.09 370 the State of Indiana. The warranty bond shall be in effect for three years from the date of substantial completion. Upon the final acceptance of the project , the contractual obligations of the Contractor are satisfied as long as the micr o-surfacing continues to meet or exceed the warranted values as defined herein. All warranty work shall be accomplished in accordance with 411.11. At the end 150 of the warranty period, the Contractor will be released from further warranty work or responsibility, provided all previous warranty work has been satisfactorily completed and approved by the Department. 411.10 Conflict Resolution Team The scope of work for the conflict resolution team includes all issues concerning the warranted pavement relative to the quality control plan, material selection, warranted pavement evaluations, distress i ndicators, remedial action, and remediation plans. 160 The team will consist of two Contractor representatives, two Department representatives, and an additional person mutually agreed upon by both the Department and the Contractor. All costs for the additional person will be equally shared by the Department and the Contractor. The team members will be identified in writing when needed and will be knowledgeable in the terms and conditions of this warranty and the methods used in the measurement and calculation of pavement distress. The team will render a final recommendation to the Chief Engineer by a majority vote. Each member has an equal vote. 170
411.11 Warranty Work
Elective work is performed by the Contractor at its discretion to meet the performance requirements of warranted micro-surfacing prior to direction from the Department for the Contractor to perform remedial work. Remedial work is performed as a result of pavement distress surveys performed by the Department. During the warranty period, elective work and remedial work shall be performed 180 at no cost to the Department. Elective work shall be at the Contractor’s option. The scope of all elective or remedial work to be performed and all materials to be used shall be proposed by the Contractor and shall be subject to approval by the Department. Prior to proceeding with any warranty work or monitoring , all necessary permits shall be obtained from the Department. Elective work performed during the warranty period will not be assessed a lane closure fee. For remedial work, costs for closure periods will be as shown in the contract. 411.10 371 190 During the warranty period, the Contractor may monitor the warranted micro- surfacing using non-destructive procedures. Coring, milling, or other destructive procedures may not be performed by the Contractor without prior consent of the Department. The Contractor will not be responsible for damages to the pavement as a result of coring, milling, or other destructive procedures conducted by the Department. The Contractor has the first option to perform the remedial work. If the problem requires immediate attention, as determined by the Engineer, for safety of the traveling 200 public and the Contractor cannot perform the remedial work within 24 h of notification, the Department will perform the remedial work. The Contractor shall be responsible for all costs incurred by the Department for remedial work performed by the Department. Remedial work performed by the Department will not alter the requirements, responsibilities, or obligations of the warranty. 411.12 Pavement Distress Indicators, Thresholds, and Remedial Work The Department will use the following pavement distress indicators throughout the warranty period:
a.Rutting – transverse displacement of the micro-surfacing.
b.Delamination – physical separation of the micro-surfacing that exposes the underlying surface.
c.Raveling – wearing away of the micro-surfacing.
d.Skid Resistance – friction number as measured by ASTM E274 and ASTM E524. The pavement threshold values for the pavement distress indicators will be evaluated for the entire length of the project for each lane. The threshold values for the pavement distress indicators are listed below: Distress Single Location Multiple Locations Delamination or Raveling 1/2 sq yd 1 sq yd/mi Rut Depth 1/4 in. average 1/4 in./mi Friction Number* no less than 30 average 35 * Individual friction tests will be performed in each lane every 1/2 mi for the len gth of the project. The Department may evaluate the warran ted micro-surfacing during the warranty period. A final condition survey will be ma de by the Department and the Contractor will be notified in writing of all sections exceeding the warranty threshold at least 90 days in advance of the expiration of the warranty period. 411.12 372 230 If the Department determines that any distress threshold level has been met or exceeded and remedial work is required, th e Contractor shall submit a work plan and schedule to the Engineer for approval. The Contractor shall perform the remedial work within 30 calendar days of notification of approval by the Engineer. If at anytime during the warranty period, 30% or more of the project requires or has received remedial work, re medial work as determined by the Department shall be performed on the entire project. If remedial or elective work performed by the Contractor necessitates repair or 240 replacement of pavement markings, adjacent lanes or roadway shoulders, the required work shall be the responsibility of the Contractor. Warranty requirements for elective and remedial work will be limited to the life of the original contract warranty. 411.13 Department Maintenance The Department may perform routine maintenance operations during the warranty period including, but not limited to, plowing, applying de-icing chemicals, repairs to safety appurtenances, pavement markings, mowing, and sign maintenance. The 250 Department will perform no routine pavement surface maintenance activities during the warranty period.
411.14 Method of Measurement
Warranted micro-surfacing, of the type sp ecified, will be measured by the square yard of surface course. Only the surface course will be measured for payment. 411.15 Basis of Payment 260 Warranted micro-surfacing, of the type specified, will be paid for at the contract unit price per square yard of micro-surface, warranted, of the type specified, complete in place. Payment will be made under: Pay Item Pay Unit Symbol Micro-Surfacing, Warranted, for Approaches, Multiple Course ................................................................. SYS 270 Micro-Surfacing, Warranted, for Approaches, Single Course ..................................................................... SYS Micro-Surfacing, Warrante d, Multiple Course .......................... SYS Micro-Surfacing, Warranted, Single Course ............................ SYS 411.13 373 The cost of all incidentals including, but not limited to, surface preparation, meeting smoothness requirements, and warranty bond shall be included in the cost of the pay items.
411.16 Final Warranty Acceptance 280
The Engineer will review the project in the field for any defects not addressed in the indicators and recommend a Final Warr anty Acceptance. The Department will issue the Contractor a Final Warranty Acceptance letter upon completion of the warranty period and all remedial work.
Source: Indiana Standard Specifications, 2024 Edition. Pages 371–376 of 1,248.