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Articles 10351 - 10380 of 39816

Full-Text Articles in Civil and Environmental Engineering

Michigan's Inventory-Based Rating System For Unpaved Roads, Peter Torola Mar 2020

Michigan's Inventory-Based Rating System For Unpaved Roads, Peter Torola

Purdue Road School

The current rating systems for unpaved roads lack stability and reliability and, therefore, provide little benefit as project- or network-level metrics. Since many of these systems are derived from paved-road assessment systems, they focus heavily on surface distresses rather than road width, drainage, and other features. This session presents the Inventory-Based Rating System as a stable and implementable method of condition assessment for unpaved roads, without the focus on surface distresses.

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Past, Present, And Future Of Priced Managed Lanes, Ganapathi Badireddi, Ron Davis Mar 2020

Past, Present, And Future Of Priced Managed Lanes, Ganapathi Badireddi, Ron Davis

Purdue Road School

Using various maps and graphs, this presentation will detail the significant growth in the U.S. priced managed lane sector in terms of mileage, locations, and toll revenue. The location of priced managed lanes currently under construction will also be included to show anticipated growth over the next several years. Some emerging trends and considerations for the future will be discussed based on involve-ment in recent studies of priced managed lanes around the country.

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Alternate Methods For Preserving Asphalt Pavements, Jeff Beeler Mar 2020

Alternate Methods For Preserving Asphalt Pavements, Jeff Beeler

Purdue Road School

Come hear how the city of Warsaw, Indiana, uses a “mix of fixes” to economically extend the life cycle of its road network while maintaining a safe and politically friendly high pavement condition index (PCI) number. The mixes include rejuvenation, slurry, micro, and crack sealing.

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Indot Einvoice Application For Consultant Contracts, Jeff Clanton, Dale Carter Mar 2020

Indot Einvoice Application For Consultant Contracts, Jeff Clanton, Dale Carter

Purdue Road School

In 2016, INDOT began the implementation of an electronic consultant invoicing application with nine pilot firms. In March of 2018, the application was rolled out for use with most new consultant contracts. Approximately 2,500 invoices were processed through eInvoice in FY 2019, and INDOT is working on an enhancement retrofit for implementation on earlier contracts. In this session INDOT representatives will review the purpose and features of the application as well as planned future enhancements.

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Aging Urban Corridors: Big Challenges, Big Rewards, Carl Camacho, Erin Wenger, David Borden Mar 2020

Aging Urban Corridors: Big Challenges, Big Rewards, Carl Camacho, Erin Wenger, David Borden

Purdue Road School

When revitalizing aging urban streets, an early, in-depth investigation holds the keys to success. Property ownership documents are gener-ations old. Utility records are often nonexis-tent. Century-old underground infrastructure must be located and evaluated. The up-front, fact-finding work is more critical, there’s more of it, and it’s more valuable to the end result. Find out how we set the stage for improving a section of US 40, the “First Highway in America,” that runs through Indianapolis.

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Indot Intelligent Road Design And Construction Using 3d Models, Derek Fuller, Andrew Pangallo, Timothy Haney Mar 2020

Indot Intelligent Road Design And Construction Using 3d Models, Derek Fuller, Andrew Pangallo, Timothy Haney

Purdue Road School

This presentation provides an update on INDOT’s e-construction and Intelligent Design and Construction initiatives. This will include a discussion of INDOT’s efforts over the past year to move toward 3D CAD models for roadway design, advancements in digital/electronic construction inspection including further development and refining of inspection checklists, continued development and testing of a mobile inspection application, and demonstration projects for e-ticketing of HMA materials delivery.

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Trends And Advances In Geosynthetic Interlayers, Mark Marienfeld Mar 2020

Trends And Advances In Geosynthetic Interlayers, Mark Marienfeld

Purdue Road School

Geosynthetic pavement interlayers for asphalt pavement have been used for over 50 years. They have been improved to resolve millability, recyclability, and pavement performance concerns when millings with interlayer pieces are used in a new mix design. This presentation will summarize third-party testing for new geosynthetic interlayers and their performance improvements during milling and recycling of asphalt pavements. It will also highlight pavement performance when millings of the interlayer are used in a new mix design.

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The Cost Of Nepa, Kenneth Mcmullen, Steve Walls, Joseph Dabkowski Mar 2020

The Cost Of Nepa, Kenneth Mcmullen, Steve Walls, Joseph Dabkowski

Purdue Road School

In this session we will discuss how the National Environmental Policy Act does or does not affect a project’s bottom line. NEPA costs by project/NEPA document type will be presented, followed by a group discussion with a panel of at least one INDOT NEPA practitioner, one NEPA consultant, and one INDOT consultant services manager. The session will conclude with an open discussion for project managers, consultants, designers, and other stakeholders about costs, ways to move forward, and working toward a better understanding of environmental costs, schedule constraints, and various other issues

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Update On Partial Depth Patching Techniques For Concrete Pavement, Mike Nelson Mar 2020

Update On Partial Depth Patching Techniques For Concrete Pavement, Mike Nelson

Purdue Road School

INDOT has let and constructed numerous projects over the past 2 years utilizing signifi-cantly revised partial-depth patching tech-niques. This presentation will provide an update regarding the construction and performance of new practices.

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Indot Dnr Maintenance Memorandum, Sandra Bowman, Frank Sailer Mar 2020

Indot Dnr Maintenance Memorandum, Sandra Bowman, Frank Sailer

Purdue Road School

On March 13, 1997, INDOT and the Department of Natural Resources signed a memorandum of understanding that exempted specified main-tenance activities from the Flood Control and Navigable Waterways Act. There has been much confusion and many interpretation variances in the interim. INDOT has been working with the DNR to update the MOU to provide clarity to areas of conflicting interpretation. Join us for a discussion.

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Application Of Geosynthetic Paving Fabric Interlayer In I-65, Kumar P. Dave Mar 2020

Application Of Geosynthetic Paving Fabric Interlayer In I-65, Kumar P. Dave

Purdue Road School

INDOT recently used a geosynthetic paving fabric interlayer for the first time, on I-65, to retard reflective cracking and as a pavement moisture barrier. The nonwoven fabric interlayer used is both millable and recyclable. This tech-nical presentation will provide insight into the use of paving fabric interlayer as a cost-effective, innovative tool for pavement rehabilitation.

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Geosynthetic Interlayer Functions And I-65 Installation, Mark Marienfeld Mar 2020

Geosynthetic Interlayer Functions And I-65 Installation, Mark Marienfeld

Purdue Road School

INDOT recently used a geosynthetic paving fabric interlayer for the first time, on I-65, to retard reflective cracking and as a pavement moisture barrier. The nonwoven fabric interlayer used is both millable and recyclable. This technical presentation will provide insight into the use of paving fabric interlayer as a cost-effective, innovative tool for pavement rehabilitation.

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Erms Best Practices: Don't Stumble Across The Finish Line, Heather Johnson, George Watson Mar 2020

Erms Best Practices: Don't Stumble Across The Finish Line, Heather Johnson, George Watson

Purdue Road School

Join us for a discussion of the best practices for design uploads and the upcoming changes in the next version of Electronic Records Management System (ERMS).

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City Of Elkhart - Ada Data Collection And Transition Plan Implementation, Jeffrey Schaffer, Rachel Page Mar 2020

City Of Elkhart - Ada Data Collection And Transition Plan Implementation, Jeffrey Schaffer, Rachel Page

Purdue Road School

Over a 5-year period, the City of Elkhart col-lected detailed data on nearly 4,000 curb ramps. The City is now using that data to plan and fund ADA improvements within the public right-of-way. This presentation will discuss how to look at an overwhelming task such as ADA compli-ance in the right-of-way and develop a plan to manage it.

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The Effect Of Waste Engine Oil And Waste Polyethylene On Uv Aging Resistance Of Asphalt., Chao Peng, Chong Guo, Zhanping You, Fang Xu, Wenbo Ma, Lingyun You, Tianjun Li, Lizhen Zhou, Shifan Huang, Hongchao Ma, Li Lu Mar 2020

The Effect Of Waste Engine Oil And Waste Polyethylene On Uv Aging Resistance Of Asphalt., Chao Peng, Chong Guo, Zhanping You, Fang Xu, Wenbo Ma, Lingyun You, Tianjun Li, Lizhen Zhou, Shifan Huang, Hongchao Ma, Li Lu

Michigan Tech Publications, Part 1

Waste engine oil (WEO) and waste polyethylene (WPE) are two common wastes, which are easy to pollute the environment. As the primary material in road construction, natural asphalt is a non-renewable energy source and asphalt is vulnerable to ultraviolet (UV) radiation during the service life. It results in degradation of asphalt pavement performance. In this paper, 22 wt % to 82 wt % of WEO and WPE were used to modify asphalts and the UV aging simulation experiment was carried out. The physical parameters of asphalts before the UV aging experiment show that the asphalt containing 42 wt % WPE …

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Besнtentyak Oil And Gas-Condensate Field Water Analysis, Sh.Zh. Mirboboev, Z.A. Razykov, S.K. Sokhoshko Mar 2020

Besнtentyak Oil And Gas-Condensate Field Water Analysis, Sh.Zh. Mirboboev, Z.A. Razykov, S.K. Sokhoshko

Gorniy vestnik Uzbekistana

The article deals with the analysis of waterlogging and development dynamics oil and gas condensate field Beshtyentyak. As a result, have been determined the distribution of wells by the accumulated oil and liquid withdrawals, the periods of water manifestations of the wells in this field, and the changes in the oil-and-gas concentration and water supply. The further work of gas and gas condensate wells is estimated at the Beshtyentyak oil and gas condensate field.

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A Novel Self-Healing System: Towards A Sustainable Porous Asphalt, Shi Xu, Xueyan Liu, Amir Tabakovic, Erik Schlangen Mar 2020

A Novel Self-Healing System: Towards A Sustainable Porous Asphalt, Shi Xu, Xueyan Liu, Amir Tabakovic, Erik Schlangen

Articles

Self-healing asphalt, aimed to produce a sustainable asphalt pavement using green technology, has been studied in the past two decades. Technologies including encapsulated rejuvenator and induction heating have been proposed, demonstrated in the laboratory, and gradually evaluated in field application. This paper looks into the synergy effect of the above two technologies, where induction heating serves as the asphalt damage repair mechanism, requiring just 2 min heating time and encapsulated rejuvenator will replenish (rejuvenate) aged asphalt binder and reinstate bitumen’s healing ability. Moreover, the increased temperature from induction heating could in turn accelerate the diffusion process of rejuvenator into aged …

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Effect Of Channelized And Unchannelized Lateral Outflow On Three-Dimensional Flow Structure And Sediment Transport Mechanisms In A River Delta, Mohammad Kifayath Chowdhury Mar 2020

Effect Of Channelized And Unchannelized Lateral Outflow On Three-Dimensional Flow Structure And Sediment Transport Mechanisms In A River Delta, Mohammad Kifayath Chowdhury

LSU Master's Theses

Spatial and temporal patterns in three-dimensional flow structure have been linked to channel morphology and processes in many environments, including river meander bends, confluences-diffluences, and bedrock canyons. However, there is not yet an understanding of how channelized and gradual, distributed lateral outflows that are often prevalent in deltaic distributary systems influence three-dimensional flow structure and sediment transport mechanisms. This thesis presents an analysis of 3D flow structure data collected from Wax Lake Delta, a naturally developing river-dominated delta in the northern Gulf of Mexico. Three hydrographic surveys were conducted using boat-mounted acoustic Doppler current profiler (ADCP) at two sites: an …

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Contextual Adjustment Of The Ite Trip Generation Rates Using Wi-Fi And Bluetooth Technologies, Saba Doulabi Mar 2020

Contextual Adjustment Of The Ite Trip Generation Rates Using Wi-Fi And Bluetooth Technologies, Saba Doulabi

LSU Master's Theses

The ITE Trip Generation Handbook has been in common use for about half a century to estimate vehicle trips generated by more than 172 land use categories as a function of establishment size (floor area) only. However, observed trip rates display a huge error range across different sites. Although contextual adjustment factors can ameliorate the error in the ITE trip generation estimates considerably, local site-specific trip generation rates should be collected for this purpose. Due to the huge time and monetary costs of data collection, adjusting the ITE trip generation rate is ignored by many jurisdictions. The primary contribution of …

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A Bibliometric Analysis Of Soil Pollution Due To Microplastics, Sangita Dike, Sayali Apte Mar 2020

A Bibliometric Analysis Of Soil Pollution Due To Microplastics, Sangita Dike, Sayali Apte

Library Philosophy and Practice (e-journal)

Microplastic pollution is a global problem because of its ecological and socioeconomic impacts on the environment. The large size plastic waste, under the action of ultraviolet radiation, pressure, and wind or wave action, breaks down into particles smaller than 5 mm referred to as microplastic. This huge amount of microplastic enters the ecosystem eventually leading to soil pollution. It has been established that microplastics enter the food chain when animals eat or ingest contaminated food materials.and have an adverse effect on human health The present paper investigates, past researches in the area of microplastic pollution of soil, by a detailed …

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Permanent Vibrodiagnosis Of The Pump Unit, F.A. Bekchanov Mar 2020

Permanent Vibrodiagnosis Of The Pump Unit, F.A. Bekchanov

Irrigation and Melioration

Currently, increasing the efficiency of operation of pumping stations is associated with the development of energy-saving and resource-saving technologies. Diagnostics is one of the modern and perfect ways to determine the main malfunctions that occur in pumping units. The main goal of diagnosing the technical condition of pumping units is to preliminarily identify the occurring malfunctions in it and ensure durability, reliability, reliability and operational efficiency. The article presents the effect of vibration on pumping units and analysis of methods of vibration diagnostics, information is given on the possibility and advantages of devices for continuous vibration diagnostics.

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Energy Saving Issues In Pumping Units, A.I. Anarbaev, D.B. Kodirov, R.A. Zakhidov, B. Usmanov Mar 2020

Energy Saving Issues In Pumping Units, A.I. Anarbaev, D.B. Kodirov, R.A. Zakhidov, B. Usmanov

Irrigation and Melioration

The article presents the issues of energy saving, which are becoming increasingly relevant due to the constant increase in tariffs and the introduction of the demands on energy efficiency and energy conversation. To save energy at pumping units, the characteristics of controlling the electric drive of pumping stations with frequency-controlled control are considered. For adequate adjustment by the technological process of water movement and power supply, corresponding analytical dependencies are obtained. An analysis of the physical expressions of water pumping processes allowed us to determine energy-saving modes of operation and technologies for improving the efficiency of equipment.

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Importance Of Creating A System Of Land And Cadastral Data For Subjects Of Agriculture, К. Rakhmonov, M.O. Abdurakhimova Mar 2020

Importance Of Creating A System Of Land And Cadastral Data For Subjects Of Agriculture, К. Rakhmonov, M.O. Abdurakhimova

Irrigation and Melioration

A separate model and model were developed for compiling cadastral maps used by the authors for agricultural organizations. The model is intended for enterprises operating in the Tashkent region. The article is based on the scientific and methodological order and the system of destruction of irrigated lands. Based on the experience of leading foreign countries in this area, the possibilities of introducing modern electronic computers in Uzbekistan are presented. The procedure for converting data into a specific algorithm is recommended for the formation of a system of land cadastral data in agricultural entities. It is necessary to create an information …

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Apple Orchard Drip Irrigation Conditions Of The Tashkent Region Of Uzbekistan, Sardor Gulyamov, Bakir Serikbaev, Anvar Sherov Mar 2020

Apple Orchard Drip Irrigation Conditions Of The Tashkent Region Of Uzbekistan, Sardor Gulyamov, Bakir Serikbaev, Anvar Sherov

Irrigation and Melioration

The article presents the results of many years of theoretical experimental field research on drip irrigation of the apple orchard of the Golden variety in the conditions of the Tashkent region. Based on the analysis of climatic, soil, hydrogeological, geological, hydrological and economic conditions of the experimental plot, as well as biological features of the garden, the values of total water consumption, water consumption deficit, irrigation, irrigation rate and the number of irrigation by the bioclimatic method are determined.

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Calculation Of The Placement Of Vertical Drainage Wells Near An Open Water Source In The Conditions Of Waterlogging Of Built-Up Areas, B.K. Saliev Mar 2020

Calculation Of The Placement Of Vertical Drainage Wells Near An Open Water Source In The Conditions Of Waterlogging Of Built-Up Areas, B.K. Saliev

Irrigation and Melioration

The article discusses the methodology for calculating the intercepting drainage well that reveals the upper layer of the multilayer horizon, and presents analytical dependencies based on the hydrodynamic theory and formulas for approximate calculation of the location of the axial line of the blocking drainage between the source of flooding and the protected built-up area from flooding. In particular, mathematical methods have been improved to solve the forecast problems of flooding in conditions of different pressure, based on the relationship between the depressions and the incoming flow of pressure water into the drainage well. The presence of underground pressure water …

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Multisector Water Consumption Database: Surkhandarya Region Of The Republic Of Uzbekistan, М. Ikramova, С. Batishev, О. Ikramov, H. Kabilov, D. Nazaraliev, А. Khodjiev, I. Akhmedkhodjaeva Mar 2020

Multisector Water Consumption Database: Surkhandarya Region Of The Republic Of Uzbekistan, М. Ikramova, С. Batishev, О. Ikramov, H. Kabilov, D. Nazaraliev, А. Khodjiev, I. Akhmedkhodjaeva

Irrigation and Melioration

The available water resources in the country are used by the different sectors of economy as industry, agriculture, energy, communal service and etc. In this case the water distribution within the river basin requires perfect information service and data exchange facilities. In the paper the developed unified multi-sector on-line database is presented aimed to monitor the water distribution among sectors of economy, database structure, and data exchange tools. The software works at operative mood, allows evaluating the combined water use efficiency by water users.

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Field Research Methods And Some Results For Distribution Of Suspended Sediment In Flow Constrained By Transverse Dams, M.R. Bakiev, K.T. Yakubov, O.M. Matkarimov, Z.B. Dovlatov Mar 2020

Field Research Methods And Some Results For Distribution Of Suspended Sediment In Flow Constrained By Transverse Dams, M.R. Bakiev, K.T. Yakubov, O.M. Matkarimov, Z.B. Dovlatov

Irrigation and Melioration

The article presents methods for determining the main parameters of flow of medium hydraulic size sediment, turbidity, sampling methods in field and the instruments used for sampling, methods of processing the samples in laboratory. Methods for setting sections and gage points and conducting field and laboratory research have been developed for flow deformed by blank and through flow transverse dams, water surface longitudinal and transverse slope takes place in the flow constrained by transverse dams, changes in suspended sediment distribution occur inversely. Location of sections for sampling is determined in the article: in the headrace –beyond dam influence zone, maximal …

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Hydromechanical Parameters Of River Sediment, A.M. Arifjanov, D.Sh. Allayorov Mar 2020

Hydromechanical Parameters Of River Sediment, A.M. Arifjanov, D.Sh. Allayorov

Irrigation and Melioration

The main problem today in irrigation canals is the danger of siltation, in this process it is important to correctly assess the factors affecting the throughput (hydromechanical parameters of sediment) and using their justification of the hydraulic elements of the flow. The article presents the results of theoretical studies of the main hydromechanical parameters (hydraulic fineness) of river sediments, in hydraulic structures, in particular in irrigation canals, which currently increasingly affect adversely moving water. It has been established that the hydraulic size entering the right bank irrigation sump of the Kokand hydropower complex varies in the range of 189-429 mm/s, …

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Design Dimensions Of Flow In Compressed Flow Beyond Combined Dikes, O. Kodirov, О. Хаlimbetov Mar 2020

Design Dimensions Of Flow In Compressed Flow Beyond Combined Dikes, O. Kodirov, О. Хаlimbetov

Irrigation and Melioration

The experimental research has shown that the kinematic pattern of flow deformed by combined structures (core part is blank and made of local materials, and the head part is made of piles), and it is more complicated than usual, although the qualitative flow schemes have much in common. The flow has the zones of backup, compression and spreading. Compression zone is discussed in the article, and the largest transverse and longitudinal drops in elevation and velocity are observed in this zone, therefore theoretically it is very difficult to set the main design dimensions of flow in this zone. Therefore, the …

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Certain Particularities Of Hydrotechical Concrete Water Permeabity, F.R. Yunusova, T.D. Muslimov Mar 2020

Certain Particularities Of Hydrotechical Concrete Water Permeabity, F.R. Yunusova, T.D. Muslimov

Irrigation and Melioration

The article discusses the issues of hydrotechnical concrete water permeability based on the requirements set to them, methods for determining concrete water permeability, characteristics of porosity and capillaries formed in concrete, as well as possibilities to decrease hydrotechnical concrete water permeability with the use of chemical admixtures and colmatation.

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