Improvements on Manual Pavement Distress Data Collection to Conform to State and Federal Requirements

The purpose of this study is to align the pavement distress data of the state of New Mexicos pavement management system with that of the federal highway system, the Highway Performance Monitoring System (HPMS), while concurrently reducing variability, increasing data consistency, and providing a greater quantity of specific data items to be considered in pavement preservation and keeping costs under control. The distress rating codes used by NMDOT in reporting severity and extent do not readily correlate to the data required in the HPMS system. To form a usable data set for both NMDOT\u27s PMS and the federal HPMS, an entirely new distress data collection protocol has been written and field tested. The three levels of testing include interrater agreement and interrater reliability across the \u27old\u27 protocol, the \u27new\u27 protocol, and actual field measurements to judge the accuracy of both old and new methods. By doing this, the accuracy and validity of the pavement distress surveys are expected to increase. The objectivity and integrity of the NMDOT distress rating criteria for flexible pavements should also be increased through a revision of the old criteria.\u2

Structural Overlay Strategies for Jointed Concrete Pavements. Volume VI: Appendix A, User's Manual for the EXPEAR Computer Program

DTFH61-86-C-00079A major field study and evaluation has been conducted into the effectiveness of three structural overlay types for portland cement concrete (PCC) pavements. These include sawing and sealing asphalt concrete (AC) overlays of PCC pavements, cracking and seating PCC pavements prior to AC overlay, and constructing a thin bonded PCC overlay on top of the existing PCC pavement. Condition surveys, deflection testing, and roughness measurements were performed on a total of 55 sections. The performance of these sections was evaluated and the effectiveness of each overlay type analyzed. Based on the field data, guidelines were developed for the use of structural overlays. This volume provides a users guide to the EXPEAR computerized system to assist practicing engineers in evaluating concrete highway pavements, in developing feasible rehabilitation alternatives, and in predicting the performance and cost-effectiveness of the alternatives. EXPEAR is intended for use by State highway engineers in project-level rehabilitation planning and design for conventional concrete pavements (JRCP, JPCP, and CRCP). EXPEAR uses information about the pavement to guide the engineer through evaluation of a pavement's present condition and development of one or more feasible rehabilitation strategies. A computer program has been developed for each of the three pavement types addressed. The EXPEAR version 1.4 program operates on any IBM-compatible personal computer. Extensive revisions were made in EXPEAR 1.4 to improve the user-friendliness of the program and its capabilities

Rehabilitation of Concrete Pavements, Volume III: Concrete Pavement Evaluation and Rehabilitation System

DTFH61-85-C-00004Extensive field, laboratory and analytical studies were conducted into the evaluation and rehabilitation of concrete pavements. Field studies included over 350 rehabilitated pavement sections throughout the U.S., and the construction of two field experiments. A laboratory study was conducted on anchoring dowels in full-depth repairs. Analyses of field and laboratory data identified performance characteristics, improved design and construction procedures, and provided deterioration models for rehabilitated pavements. A concrete pavement advisory system was developed to assist engineers in project level evaluation and rehabilitation. The repair techniques in Volume I include full-depth repair, partial-depth repair, load transfer restoration, edge support and diamond grinding. Overlay techniques in Volume II include bonded concrete, unbonded concrete and crack and seat with an asphalt concrete overlay. This volume, Volume III, presents a comprehensive concrete pavement evaluation and rehabilitation advisory system for jointed plain, jointed reinforced and continuously reinforced concrete pavements. Volume IV contains a description of the data collection procedures, original pavement and rehabilitation design factors, extent of the database, description of database variables, and documentation of the laboratory dowel anchoring experiment

Estimating Highway Pavement Damage Costs Attributed to Truck Traffic

Kansas is one of the leaders in meat production in the United States. In the southwest Kansas region, there are more than three hundred feed yards and several of the biggest meat processing plants in the nation. Heavy trucks (e.g., tractor-trailers) have been used primarily for transporting processed meat, meat byproducts, grain, and other related products. With the continuous growth of these industries, there will be more trucks on highways transporting meat and meat-related products in southwest Kansas. These trucks cause noteworthy damage to Kansas highway pavements, which in turn leads to more frequent maintenance actions and ultimately more traffic delays and congestion. The primary objective of this research was to estimate the highway damage costs attributed to the truck traffic associated with the processed meat (beef) and related industries in southwest Kansas. The researchers developed a systematic pavement damage estimation procedure that synthesized several existing methodologies including Highway Economic Requirements System (HERS) and American Association of State Highway and Transportation Officials (AASHTO) methods. In this research project, the highway section of US 50/400 between Dodge City and Garden City in Kansas was selected and its pavement data were collected for analysis. Outcomes of this research will be beneficial for the selection of cost-effective transportation modes for the meat processing and related industries in southwest Kansas. It will also help government agents to assess highway maintenance needs and to set up maintenance priorities. Meanwhile, the analysis results will be valuable for the determination of reasonable user costs. Based on findings of this research, recommendations on the selection of transportation modes are provided and promising future research tasks are suggested as well

Estimating Highway Pavement Damage Costs Attributed to Truck Traffic

Kansas is one of the leaders in meat production in the United States. In the southwest Kansas region, there are more than three hundred feed yards and several of the biggest meat processing plants in the nation. Heavy trucks (e.g., tractor-trailers) have been used primarily for transporting processed meat, meat byproducts, grain, and other related products. With the continuous growth of these industries, there will be more trucks on highways transporting meat and meat-related products in southwest Kansas. These trucks cause noteworthy damage to Kansas highway pavements, which in turn leads to more frequent maintenance actions and ultimately more traffic delays and congestion. The primary objective of this research was to estimate the highway damage costs attributed to the truck traffic associated with the processed meat (beef) and related industries in southwest Kansas. The researchers developed a systematic pavement damage estimation procedure that synthesized several existing methodologies including Highway Economic Requirements System (HERS) and American Association of State Highway and Transportation Officials (AASHTO) methods. In this research project, the highway section of US 50/400 between Dodge City and Garden City in Kansas was selected and its pavement data were collected for analysis. Outcomes of this research will be beneficial for the selection of cost-effective transportation modes for the meat processing and related industries in southwest Kansas. It will also help government agents to assess highway maintenance needs and to set up maintenance priorities. Meanwhile, the analysis results will be valuable for the determination of reasonable user costs. Based on findings of this research, recommendations on the selection of transportation modes are provided and promising future research tasks are suggested as well. PowerPoint presentation attached below as Related File. Link to Webinar video: http://vimeo.com/3739719

ANALYZING HIGHWAY DAMAGE COSTS ATTRIBUTED TO TRUCK TRAFFIC OF PROCESSED MEAT AND RELATED INDUSTRIES IN SOUTHWEST KANSAS

Kansas is one of the leaders in meat production in the United States. In the southwest Kansas region, there are more than three hundred feed yards and several of the biggest meat processing plants in the nation. Heavy trucks (e.g., tractor-trailers) have been used primarily for transporting processed meat, meat byproducts, grain, and other related products. With the continuous growth of the industries, there will be more trucks on highways transporting meat and meat-related products in southwest Kansas. These trucks cause noteworthy damages to Kansas highway pavements, which in turn leads to more frequent maintenance actions and ultimately more traffic delays and congestions. The primary objective of this research was to estimate the highway damage costs attributed to the truck traffic associated with the processed meat (beef) and related industries in southwest Kansas. The researcher developed a systematic pavement damage estimation procedure that synthesized several existing methodologies including Highway Economic Requirements System (HERS) and American Association of State Highway and Transportation Officials (AASHTO) methods. In this research project, the highway section of US 50/400 between Dodge City to Garden City in Kansas was selected and its pavement data was collected for analysis. Outcomes of this research will be beneficial for the selection of cost-effective transportation modes for the meat processing and related industries in southwest Kansas. It will also help highway agents to assess highway maintenance needs and to set up maintenance priorities. Meanwhile, the analysis results will be valuable for the determination of reasonable user costs. Based on findings of this research, recommendations on the selection of transportation modes are provided and promising future research tasks are suggested at the end of the thesis as well

Developing a Whole-Life Value Model for the Irish National Road Network

Planning of road maintenance helps to spend available budgets efficiently and aims to keep the network in a safe and useable condition for road users. Road pavement maintenance models have traditionally excluded externalities as part of quantitative assessments of maintenance options. However, road maintenance affects wider society and therefore any maintenance decisions should integrate externalities into the decisions and tools that are used to generate maintenance programmes. This thesis investigates how externalities of carbon and noise emissions from maintenance can be included in a pavement maintenance model and the associated impacts on developing a maintenance programme. Pavement maintenance models were studied and it showed that there is a general omission of externalities within the core of the models. A review of externalities (with an emphasis on environmental externalities) demonstrated that road authorities do have policies to take account of externalities but often in a qualitative assessment and often only at a project level, not at a strategic level. This research developed a whole-life cost model into which novel methodologies for modelling carbon and noise were included, with the methodologies developed so that they can be used in other pavement management systems. The result was a model that took account of a wider range of value parameters as part of the economic analysis. Two in-depth case studies were completed to investigate the impact that the methodologies had on a road network. Using current government prices for carbon and noise, noise had a significantly greater impact on the resulting maintenance programme. Sensitivity analysis showed that the resulting maintenance programmes were a lot less sensitive to changes in the price of carbon, although both parameters did lead to changes in the resulting maintenance programme, especially when specific environmentally focused maintenance options were included as treatments