Author: Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 48
Book Description
CRREL Report
Author: Special Report
Author: Resilient Modulus Testing of Materials from Mn/ROAD, Phase 1
Author: Publisher: DIANE Publishing
ISBN: 1428914080
Category : Pavements
Languages : en
Pages : 31
Book Description
Public Roads
Author: Research & Technology Transporter
Author: Measuring in Situ Mechanical Properties of Pavement Subgrade Soils
Author: David E. NewcombPublisher: Transportation Research Board
ISBN: 9780309068574
Category : Science
Languages : en
Pages : 84
Book Description
This synthesis report will be of interest to pavement and geotechnical design and research engineers, geologists and engineering geologists, and related laboratory personnel. It describes the current practice for measuring in situ mechanical properties of pavement subgrade soils. The tests conducted to measure the mechanical properties of soil strength and stiffness are the primary topics, and these are discussed in the context of design procedures, factors affecting mechanical properties, and the variability of measurements. Information for the synthesis was collected by surveying U.S., Canadian, and selected European transportation agencies and by conducting a literature search. This TRB report provides information on existing and emerging technologies for static and dynamic, and destructive and nondestructive testing for measuring in situ mechanical properties of pavement subgrade soils. Correlations between in situ and laboratory tests are presented. The effects of existing layers on the measurement of subgrade properties, and soil spatial and seasonal variability are discussed. Most importantly, the use of soil properties in pavement design and evaluation are explained. New applications or improvements to existing test methods to support the use of mechanistic/stochastic-based pavement design procedures are also explained.
Managing Contract Research Programs
Author: Eugene F. ReillyPublisher: Transportation Research Board
ISBN: 9780309060011
Category : Technology & Engineering
Languages : en
Pages : 104
Book Description
"The synthesis describes the state of the practice for managing contract research programs. Data presented were obtained from a review of the literature, a survey of state departments of transportation (DOTs), and interviews of selected state DOT, Federal Highway Administration, Transportation Research Board, and university professionals."--Avant-propos.
Focus
Author: Selection of Flexible Pavement Backcalculation Software for the Minnesota Road Research Project
Author: David A. Van DeusenPublisher:
ISBN:
Category : EVERCALC (Computer file)
Languages : en
Pages : 96
Book Description
This report presents the results of an evaluation process of several different flexible pavement backcalculation programs. The objective of this study was to compare the performance of the candidate programs in terms of useability and accuracy of backcalculation results. This was accomplished by evaluating the selected programs using both field and simulated data. The results of the analysis were used as the basis for selecting a program for routine analysis of Mn/ROAD pavement deflection data. In situ pavement strains were measured during falling-weight deflectometer tests. The measured strains were then compared to backcalculated strain values from each program. In addition to the field tests, a series of hypothetical pavement structures with a range of prescribed layer thicknesses and moduli were analyzed to obtain surface deflection data. These surface deflections were then used as input for each program involved in the study. The output from each program was compared to the expected values.
Terminology on Combined Transport (English-French-German-Russian)
Author: European Conference of Ministers of TransportPublisher: OECD Publishing
ISBN: 9282102114
Category :
Languages : en
Pages : 71
Book Description
This document lists the principal terms used in combined transport or related to it. All the definitions referring specifically to the geographical framework of Europe may be applied to other regions of the world. They are intended for the work of ...