ARIZONA DEPARTMENT OF TRANSPORTATION REPORT NUMBER: FHWA-AZ92-379-1 SPS-5 AND SPS-6 SHRP DATA COLLECTION Final Report Prepared by: Austin Research Engineers. Inc 2600 Del!ana Lane Austin, Texas 78746 December 1992 Prepared for: Arizona Department of Transportation 206 South 17th Avenue Phoenix. Arizona 85007 in cooperation with U S Department of Transpol?ation Federal Highway Administration The contents of the report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Arizona Department of Transportation or the Federal Highway Adrmnistntion. This report does not constitute a standard, specification, or regulation. Trade or manufacturers' names which may appear herein are cited only because they are considered essential to the objectives of the report. The U.S. Government and The State of Arizona do not endorse products or manufacturers. 2. Government Accession 1. Report No. No. Technical Report Documentation Page 3. Recipient's Cotelog No. FHWA-AZ92-379-1 I 1 I 4. Title end Subtitle 1 5. Report Date 7. Author 1 L 8. ~erforrrtinaOraenizetion Report No. 10. Work Unit No. 9. Per?orming Organization N l m e and Address AUSTIN RESEARCH ENGINEERS, INC. 2600 DELLANA LANE AUSTIN, TEXAS 78746 No. HPR-PL-l(411379 11. Contract or Grnnt 12. Sponsoring Agency Nems end Address 1 3 .Type of Report & ARIZONA DEPARTMENT OF TRANSPORTATION 206 S. 17TH AVENUE PHOENIX, ARIZONA 85007 Period Covered 14. Sponsoring Agency Code I 15. Supplementary Not- Prepared in cooperation with the U.S. Depaitment of Transportation, Federal Highway Administration 16. Abstract This project required the completion of Construction Data Forms for the Strategic Highway Research Program's (SHRP) Specific Pavement Studies (SPS) Experiment Number 5, The Rehabilitation of Asphalt Concrete Pavements, and Experiment Number 6, The Rehabilitation of Jointed Portland Cement Concrete Pavements. In Arizona, the SPS-5 experiment construction was done in the eastbound travel lane of interstate Highway 8, between mileposts 1 5 9 and 161 in southwestern Arizona. Eleven test sections were constructed for the experiment, w i t h eight as set forth in SHRP guidelines. In addition, t w o additional sections were constructed, and one designated as the control section, for a grand total of eleven sections. There are eleven SHRP Construction Data Forms. Each Form covers a general topic relared t o the rehabilitation construction. The SPS-6 experiment construction was i n the eastbound travel lane of Interstate H i ~ h w a y40, between mileposts 202 and 205 in northern Arizona. Eighteen test sections were constructed for the experiment, w i t h eight as set forth in SHRP guidelines. I n addition, nine additional sections were constructed, and one designated as the SHRP control section, for a orand total of eighteen sections. There are twenty seven of the SHRP Construction Data Forms and are numbered one through three and seven through thirty. Each form covers a general topic related t o the rehabilitation construction. 17. Key Words I Pavement. rehabilitation, SHRP, asphalt concrete, portiand cement concrete 19. Security Classification Unclassified 20. Security Classificetion Unclassified I 18. Distribution Statement Document is available t o the U.S. Public through the National Technical Information Service, Springfield, Virginia 221 6 1 21. No. of Pages 17 22. Price 23. Registrant's Seal I METRIC (St*) CONVERSION FACTORS APPROXIMATE CONVERSIONS TO SI UNITS spbd WM Y o u Know Multlpiy By To Flnd APPROXIMATE CONVERSIONS TO SI UNITS Symbol Symbol When You Know Yulllpfy By LENGTH In ft yd ml Inches Ieef yards miles 2.54 0.304 0.014 1.81 To flnd Symbol LENGTH centlmef res metre3 mefres kllornefres cm rn m k rn mrn m rn km rnlllimetres rnelres metres kllometres 0.039 3.28 1.09 0.621 Inches feel yards miles AREA AREA In1 fl' ydl mis ac square squnre square square acres Inches feet yards mlles 645.2 0.0929 0.836 2.59 0.395 mrrP cantlmetrensquared metres squared metres squarctd kllometres squared hectares crn rnl m1 krnr ha ma krnl ha 01 Ib T ounces 28.35 pounds 0.454 shon tons (2000 Ib) 0.907 grams kllogrmrns megagrams fI oz gal fts yd' lluld ounces gallons cublc feat cublc yards 29.57 3.785 0.0328 0.0765 mlllllifres lltres metres cubed metres cubed m1 square lnches square feet square mlles acres 0.0333 2.205 kg grams kilograms Mg megagrarns (1 000 kg) 1.103 9 kg VOLUME 0.0016 10.764 0.39 2.53 ounces pounds short tons VOLUME mL L m' m' rnlltllltres lltres metres CUM metres cubad - 0.034 0.264 fluld ounces gallons cubic Isst cublc yards 35.315 1.308 519 (afier sublractlng 32) Celalus tarnpermlure ' SI Is the symbol lor the Intematlonal System of Measurements 11 oz gal It' yd1 TEMPERATURE (exact) OC Colslus lempernture 915 (then add 32) Fmhrenhelt temperaturs TEMPERATURE (exact) Frhrenhelt temperaturs oz Ib T L m' rn NOTE: Volumes greatof than 1003 L shall h shown In ml. OF In' ft' 1 I, ac MASS (weight) (I MASS (welght) mtllimatres squared metres squared k~lometress q ~ ~ a r e d hectores (10 000 rn7 OC These factors conform to the requirement of FHWA Order 5190.1A. - OF: TABLE OF CONTEhTS PAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1. INTRODUCTION 2. CONSTRUCTION DATA FORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 SPS-5 ......................................................... 2 Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Data Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SPS-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Data Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. STRIP MAP DEVELOPMENT 4. CONSTRUCTION OF SPS-6 ..................................... 11 ....................................... 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 EXISTING PROJECT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 CONSTRUCTION PROJECT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 14 EXPERIMENTAL FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 CONSTRUCTION OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 CHARACTERISTICS OF MATERIALS LIST OF TABLES TABLE PAGE . SPS-5 Construction Data Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. Guidc to SPS-5 Construction Data Form Completion for Arizona.. . . .4 SPS-h Construction Data Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Guidc to SPS-6 Construction Data Form Completion for Arizona . . . . . . 8 1. INTRODUCTION This report is a summary or synopsis of the activities!services performed on ADOT Contract 92-29. In 1992 ADOT iontracted with ARE to prepare a series of documents relating to ADOT's activities in SPS-5 and SPS-6 of the Strategic Highway research program (SHRP). The specific objectives of the \/ark program were: 1. Review the SHRP requlsments for SPS-5 and SPS-6 data collection requirements, assemble, and complete the construction data forms. 2. Prepare strip maps indicating the PCCP slab condition prior to rehabilitation for each SHRPIADOT test section within the SPS-6 project. 3. Prepare strip m a p indicating the H M A C pavement condition prior to rehabilitation. 4. Prepare an SPS-6 construction report. The following report sections provide summary documentation the SPSd and SPS4 data collection, SPS-5 and SPS-6 strip map development, and the construction of SPS4 sections. 2. CONSTRUCTION DATA FORMS This project scope required the completion of Constnrction Data Forms for the Strategic Highway Resoarch Program's (SHRP) Specific Pavement Studies (SPS) Experiment Number 5, The Rehabilitation of Asphalt Concrete Pavements. In Arizona, the SPS-5 experiment construction was done in the Eastbound Travel lane of Interstate Highway 8, between mileposts 159 and 16i in southwestern Arizona. Eleven test sections were constructed for the experiment, with eight as set forth in SHRP guidelines. In addition, two additional sections were constructed, and one designated as the control sec%ion, for a grand total of deven sections. There are eleven (11) of the SHRP Construction Data forms and are number as such, one through eleven. Each form covers a genzial topic related to the rehabilitation construction. Normally, these forms would be completed as construction p r o d s , however, many of thesz forms were not complete at the time of construction in the Summer of 1990. As noted earlier, there are eleven Construction Data forms and are grouped by the topic of data that each covers. In general, these forms cover data ielated to the surface preparation, overlay placement, and material properties. The data sheets are titled as shown in Table 1. It is important to note that some SHRP forms are tilled out with project related data ar;d others with section specific data. In the case of the Construction Data forms, the first one, number one: Reference Project Station Table, has project level data, which is applicable to all of the section5 in the project. Hence, only one form is filled out for the entire experiment location (one project). The rest of the forms are completed with section specific data, and in some cases, several copies of each form are filld out for different layers of a given section, such as the eighth one: Overlay Compaction Data, since each layer can have different compaction methods. Table I . SPS-5 Construction Data Forms Data Sources The primary data source for the SPS-5 Comtruction Data forms is the Draft Construction Report 'SPS-5: Rehabilitation of Asphalt Concrete Pavements' prepared by ASM Mustaque Hossain, PhD., Douglas J. Lattin, P.E.,and Larry A Scofield, P.E.dated November 6, 1990. Since this docume~twas described as the m t complete source of information for the SPS-5 Construction project, it was used exclusiveiy for completing the forms. When the report information was inadequate, t!be information was requested from Larry Scofield, who located it if it was available. Completion Based on the SPS-5 Construction Data forms guide for completion, the following Table 2 was created. Table 2. Guide to SPS-5 Construction Data Form Completion for Arizona Legend t * Always completed If performed as appropriate If data available As needed This table was used throughout this project as a guide to determine which f c m needed to be completed for each SPS-5 section. Unfortunately, not all data was available for data form completion. While most of the SPSd Construction Data fonns were more than substantially completed, important information is lacking. inadequate. First, the layer thickness measurements are There are some averages and ranges for the layers, but generally lack data on a sporadic basis. Data needed includes both compacted and uncompacted layer thicknesses and morz complete milled layer thicknesses. Existing data is generally incomplete. In the Construction Report, there are also several sections where text indicates a range of compaaed layer thicknesses. All of the sections also include a table with the same information, but the text and the referenced table do not agree in several sections. These cwld be typographical errors or simply document production errors, but they do leave some additional unknowns. Some of the tables of the milled thicknesses include substantial information,but often do not inciude milled depths for sections that were retnilled due to initial inadequate milling. Hence, the thicknesses shown are invalid for actual depths in these cases. In addition, there is little information about both the air temperatures at the time asphalt placement and temperatures of the asphalt itself as it was placed. Generally a range of data was available, but the data itself was not. Also, no roller compbdion data was available. Nor is there any indication of the curing times that the asphalt was allowed before exposure L traffic. Little was available in terms of wclear density information. Again, there is an indication that data was taken, since an average is presented and locations of the tests are noted, but the actual data itself was unavailable, just as the layer thickness measurements. As for profilograph dzta, none was encountered in the SPS-5 project data, and it is therefore, assumed that none exists. This project scope required completion of Construction Data Forms for the Strategic Highway Research Program's (SHRP) Specific Pavement Studies (SPS) Experiment Number 6, The Rehabilitation of Jointed Portland Cement Concrete (PCC) Pavements. In Arizona, the SPS-6 experiment construction was done in the Eastbound Travel lane of Interstate Highway 40, between mileposts 202 and 205 in northern Arizona. Eighteen test sections were constructed for the experiment, with eight as set forth in SHRP guidelines. In addition, nine additional sections were constructed, znd one designated as the SHRP control section, for a grand total of eighteen sections. There are twenty-seven (27) of the SHRP Construction Data forms and are numbered one through three, and seven through thirty. The strange numbering sequence is used to utilize some of the same forms from the SPS-5 experiment and maintain consistent form numbers. h c h form covers a general topic related to the rehabilitation construction. Normally, these forms would be completed as construction proceeds, however, many of these forms were noi complete at the time of construction in the Summer and Fall of 1990. Forms As noted earlier, there are twenty-seven Construction Data forms and are grouped by the topic of data that each covers. In general, these forms cover data related to the surface preparation, overlay placement, and material properties. The data sheets are titled as shown in Table 3. Again, it is important to note that some SHRP forms are filled out with project related data and others with section specific data. Again, the first one, number one: Reference Project Station Table, has project level data, which is applicable to all of the sections in the project. Hence, only one form is filled out for the entire experiment location (one project). The rest of the forms are completed with section specific data, and in some cases, several copies of each form are fdled out for different layers of a given section, such as the eighth one: Overlay Compaction Data, since each layer can have different compaaion methods. Data Sources The data sources for the S P S 4 project are much more disjointed than those of the SPS5 project. The reason being that there was no Construction Report complete to utilize as a reference for completing the forms. Instead, we relied on numerous diaries, construction documents and records, plans, specifications, inspector's notebooks, interviews, suppliers, and project correspondence. The main task involved building the history of the construction process and extract necessary infonnation for the Construction Data forms as we proceeded. Mmy times this process was hampered by a lack of pertinent records and thus, some forms are still 1ackir.g important information which may simply not be available now, if it ever was. Based on the SPS-6 Construction Data forms guide for completion, the following Table 4. was created. Table 3. S P S 4 Construction Data Forms Partial Depth Patching Data for Pavements with PCC Surfaces Full Depth Repair Data for Pavements with PCC Surfaces (Continued) This table was used throughout this project as a guide to determine which forms needed to be completed for each SPS4 section. Unfortunately, oot all data was available for form completion. There are many data forms that simply cannot be completed for lack of information. First, form one, Reference Project Station Table, cvlaot be completed due to insufficient cutlfill information for sections 14 through 19. Form two, Revised Layer Descriptions, could not be completed since it needs to be consistent with SHRP form L05. As of the time this document was written in early December 1992, the U S ' S were not complete. They ate being done by Western Technologies in Phoenix. The LM fonns provide some layer thicknesses and more importantly, the layer numbers and layer identifications. Without these forms, we made the assumption that the data we had regarding the existing cross section was accurate and proceeded with that as an assumption. Hence, the Revised Layer Description forms Number 2 wuld not be completed. Construction Data form seven, Overlay Placement Operations, lacks uocompacted layer thickness data. It apparently does not exist. For form eight, Overlay Compaction Data laydown temperatures, roller data, and compacted thicknesses are missing. Some roller information is known, but some is not and apparently does not exist. Form nine, Construction Quality Control Measurements, lacks nuclear density information. Nuclear information was collected for several sections in the passing lane, but only one in the SHRP sections' travel lane. Form ten, Layer Thickness Measurements lacks all data. There is apparently none available according to ADOT staff. All remaining farms lack only a few pieces of information on a sporadic basis. As far as the forms that need to be filled out go, they are all being presented here. If one form is indicated to be filled out as applicable as in the aforementioned table, it wiil have been included, even if the data is not available. If it is not being presented with this document, then it was not needed for the project. For instance, undersealing forms twenty-six and twenty-seven are not included here since there was no undersealing activity in the SHRP sections. 3. STRIP MAP DEVELOPMENT The objective of this portion of the project was to prepare strip maps indicating pavement condition before and after rehabilitation for each SHRPIADOT test section within the SPS-5 and SPS-6 project areas. PASCO Film Strips were provided to ARE by ADOT for the '89 SPS-5 @reconstruction), '91 SPS-5 (postconstruction) and '89 SPS-6 (preconstruaionj sections. These filmstrips cover only the outside travel lane of each section. Also, provided were Crack Survey Maps and Summary Tables for the '91 SPS4 (postconstruction) condition surveys which were originally prepared by the Arizona Transportation Research Center. These maps indicate conditions in both the passing and travel lane of each section. Since the ATRC maps were not drawn to scale, the ARE maps were created using data taken from the Crack Location Summary Tables. These tables are Included with the SPS-6 postconstruction maps. Core sampling and NDT locations were obtained from Nichols Consulting Engineers, Chtd. (NCE). After examining the provided information and consulting with ADOT, it was decided that ARE would prepare maps at a scale of 1' = 10'on 8-112" x 1l"bond paper. These maps indicate the pavement condition identifying all longitudinal and transverse cracking, arealwheelpath cracking, patches, potholes and PCCP joints and striping apparent from the PASCO filmstrips. Maps derived from the ATRC condition surveys only Micate the location of cracking and the right shoulder stripe. Also, shown are the sampling1NDT locations based on information received from NCE. A legend precedes each group of drawings identifying ail items found on the maps. Tables showing all core/bulk sample and NDT locations follow the map legend. The following procedure was used to produce the '89 and '91 SPS-5 and '89 SPS-6 distress maps. The Pasco Film was supplied in several bulk rolls by A m . These rolls were cut into individual study sections for ease of handling. Each film strip was reproduced on sepia diazo mylar. The original film strip along with the mylar copy was examined on a light table under magnification to identify the extent of each pavement featureldistress. The mylar copies were then marked to indicate the extent of cracking, patching, striping and any other identifiable pavement feature. As a quality control check, the mylar copies were then digitized using AutoCAD Release 11 and 1 24"x 367"digitizing board. The 100' painted station marks were used to calibrate the digitizer to allow for accurate input. After completion of the digitizing process, an individual AutoCAD file was generated for each N m strip aod printed on 8-1R' x 11" bond paper at a scale of 1' = 10'. Strip maps were provided in paper copy and on computer disk for use in future updating of each respective section. Nineteen test sections were constructed by the Arizona Depamnent of Transportation (ADOT) as part of Strategic Highway Research Program (SHRP) Specific Pavement Studies (SPS) -6 experiment. The SPSd program ddresses the rehabilitation of jointed portland cement concrete pavement. The objeaive of the SPSd experiment was to develop improved performance prediction models to be used for determining the additional pavement life that can be expected from the application of a variety of JCP and JRCP pavement rehabilitation methods and strategies, ranging from minimal to maximum investment in the rehabilitation treatment. The test sections in this ADOT projed deal with JCP only. EXPERIMEhTAL FEATURES Eight of the nineteen test seaions meet the basic SHRP r e q u u e m e ~ s for h e experiment. The additional eleven sections were designed by ADOT to evaluate features that are not included in the SHRP experiment design. The 8 SHRP sections include 3 different types of surface preparation of the existing JCP, 1) crack and seat, 2) minimum restoration, and 3) maximum restoration. include two different conventional asphalt overlay thicknesses - 4" and n e y also 8",two sections with no overlay, and one control section which is to receive only r a t i n e ADGT maintenance procedures. The I 1 ADOT sections include an additional surface preparation procedure - rubblizing the existing JCP - as well as an unbondd JCP overlay, asphalt overlay with fabric, various thickness combinations of asphalt rubber and conventional asphalt overlays, and asphalt rubber asphalt concrete friction course. EXISTING PROJECT DESCRIITION The test sections were incorporated in ADOT Construction Project lR4-4(123) on 1-40 at Flagstaff, which extends from U.S.89A (MP 195) to the Walnut Canyon Interchange (MP 205) in the eastbound direction. Total project length is 10 miles. The existing pavement is a 38' roadway, consisting of two 12' travel lanes, a 10' outside shoulder and 4' inside shoulder. Travel lanes are 8" to 9"thick JCP and the shoulders are 2.5" to 3" AC. ADT ranges from 4,000 to 8,000, depeading on the time of year. Truck average speed is 61 to 64 mph. Pavement distress in the outside lane of the existing JCP consists of joint and crack spalling, longitudinal, transverse, and random direction cracking, and shattered slabs. Approximately 80% - 90% of the slabs exhibit some type of distress. Approximately 50% of the joints have spalling, 35% to 40% have longitudinalltransverse cracking, and 5% to 15% of the slabs are shattered (broken into 30 or more pieces). CONSTRUCTION PROJECT DESCRIPTION All the SHRP test sections were designed following the ideas in the SHRP "Specific Pavement Studies Experimental Design and Research Plan for Experiment SPS4, Rehabilitation of Jointed PortIand cement Concrete Pavements." Tbe SHRP guidelines for consmaion details 'Construction Guidelines for Experiment SPSd, Rehabilitation of Jointed Portland Cement Concrete Pavementsm were followed as closely as possible in construction. Repairs and other activities on the control seaion were limited by SHRP to only routine .e maintenance needed to keep the section in a & and functional condition. In general, the maintenance activities were required to be limited to tbose permitted in SHRP "Guidelines for Maintenance of General Pavement Studies (GPS) Test Sections." The minimum level of pavement restoration includes joint and crack sealing, partial and f~ll-depth patching, and full surface diamond grinding. The maximum level of restoration includes removing and replacing existing joint and crack sealing, performing additional joint and crack sealing, removing and replacing existing partial and fuildepth patching, performing additional partial and fulldepth patching, correcting poor load transfer at joints, full surface diamond grinding, retrofitting subsurface edge drains, and undersealing. Thae activities were to be performed only if wwanted. The crack and seat procedure for the SHRP sections was intended to produce a nominal crack spacing of 3' x 3'. The pavement was then rolled until the broken pieces were seated. Crack and seat on some of the ADOT sections was intended to produce a 4' x 6' cracking pattern. A tack coat was to be placed prior to oveflay. The rubblizing procedure on the ADOT seaions was intended to break the pavement into nominal 1 * to 2" pieces. It was then to be compacted with a vibratory roller aad primed prior to overlay with asphaltic concrete. Sections to receive 4" overlays were placed in two 2" lifts, the 8" overlay was placed in two 3' and one 2" lift, and 5" overlays were placed in one 3" and one 2" lift. Tack coats were applied between lifts. The unbonded FCC overlay in ADOT Section 2 was poured on 2" of asphalt concrete. The asphalt concrete friction course (ACFC) was intended to be 518" thick on some of the sections (the SHRP limit is 0.75"),and the asphalt mbbex asphalt concrete friction cwrsed (AR-ACFC) was intended to be 0.50"thick on the additional ADOT sections. The design of asphalt concrete mixes were specified to be done in compliance with guideiines in FHWA Technical Advisory T-SON.27. Only virgin aggregates are allowed and they are expected to be of highest quality. Asphalt cement was to be selected by ADOT based on normal practice. No deviations from SHRP design and construction guidelines were allowed unless accepted by SHRP. CHARACTERISTICS OF MATERIALS The virgin asphalt concrete mix design was a 314" mix consisting of basalt course aggregate, basalt intermediate aggregate, basalt fine aggregate, Flagstaff cinders, Mahan concrete sand, and Winslow sand. Asphalt cement was AC-20 at 4.6% by weight of mix. Mineral admixture was hydrated lime at 1.5% by weight of aggregate. The asphalt rubber asphalt concrete mix design included 20 46 granulated rubber of Type C 106 and AC-10 asphalt cement. Bituminous content was 6.5 % by weight of mix. The mineral admixture was lime, used at a rate of 1 % by weight of aggregate. l'ke asphalt concrete friction course (ACFC) consisted of 90% 318" aggregate, 4% CR Fines, 6% W-Fines,and 6.8% AC-20. Spall repair material was CALTRANS Formula SET 45,a rapid setting patch material, with 25 Ibs of rock per bag of SET 45. A 314" maximum size aggregate was used. Concrete for the fulldepth repairs and unbooded overlay complied with ADOT specification 1006. A Class P 4,000psi concrete was specified. Cement was Type I1 Low Alkali and fly ash was Class F. Entrained air was specified to be 4% to 7 5 , and slump 2.5"to 4.5". Aggregate size was specified as 1.5"maximum. Actual gradatiin used was 1' maximum. A wax based curing compound was used. Concrete joint sealaat was a silicone. CONSTRUCTION OVERVIEW The nineteen test sections were constructed in m approximate 2.6 mile segment of the 10 mile long 1-40 rehabilitation project. Average tests section length is approximately WO', excluding transitions between sections. The test sections were constructed between mid-June and mid-Oc'tober of 1990. Efforts from mid-June through the a d of July concentrated primarily on minimum and maximum surface preparations and the trench drain. Crack and seat aod rubblizing was done from August 1 through August 5 and the bulk of the asphait paving was from August 5 through August 12. The unbonded PCC overlay was placed on September 4 in the passing lane and September 24 in the travel lane. The ACFC and AR-ACFC were placed in mid-October. Crack and seat was accomplished with a guillotine type pavement breaker and seating was done with one pass of a 50 ton roller. For the Rubblized sections a PB4 resonant breaker was used in longitudinal passes approximately 7" to 12"wide with a steel shoe using a 2,000 Ib force at 44 tirnedrninute. The asphalt concrete mix was produced in a drum mixer plant and placed in typical 12' wide lanes. Breakdown rolling was one pass of a 12.5 ton double drum vibratory roller. Intermediate rolling was 4 passes of a pneumatic. Finish rolling was one pass of a 12.5 ton vibratory and two passes of a 12.5 ton static roller. Tack coat was ao SS-1H applied at .08 gal/SY. Tests run on the construction materials indicate they were in compliauce with the specifications. Asphalt content ranged from 4.5% to 4.9%. Air voids ranged from 3.9% to 5.1 % and stability was generally between 3,000 ad 4,000. 'Ihe portland cement concrete 28day average compressive strength ranged from 4,400 to 5,10Opsi, with air entrainment average from 5.2% to 5.5%. Slump was in the average range of 3.6"to 4.6". CONCLUSIONS Design d c o r n d o n of the SPSd test sections were successfully incorporated in ADOT Construction Projeu IR40-4(123) on 1-40 at Flagstaff. All features of the SHRP required S P S 4 experiment design were included in eight basic test sections. Design and construction data from these sections. along with future performance data that willbe collected, will be a meaningful and important contribution to achieving the goals of the SPS-6 program. In addition to the eight required SHRP sedions, ADOT included eleven more test sections which were designed to incorporate features that are not in the SHRP SPS-6 experiment design. Continued study of these sections will provide valuable input to ADOT in its desires to develop the most effective and mnomical types of pavement design and construction for rehabilitation of jointed PCC pavements.