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Bearing Capacity of Roads, Railways and Airfields focuses on issues pertaining to the bearing capacity of highway and airfield pavements and railroad track structures and provided a forum to promote efficient design, construction and maintenance of the transportation infrastructure. The collection of papers from the Eighth International Conference
This Phase II follow-up study of IHRB Project TR-473 focused on the performance evaluation of rubblized pavements in Iowa. The primary objective of this study was to evaluate the structural condition of existing rubblized concrete pavements across Iowa through Falling Weight Deflectometer (FWD) tests, Dynamic Cone Penetrometer (DCP) tests, visual pavement distress surveys, etc. Through backcalculation of FWD deflection data using the ISU's advanced layer moduli backcalculation program, the rubblized layer moduli were determined for various projects and compared with each other for correlating with the long-term pavement performance. The AASHTO structural layer coefficient for rubblized layer was also calculated using the rubblized layer moduli. To validate the mechanistic-empirical (M-E) hot mix asphalt (HMA) overlay thickness design procedure developed during the Phase I study, the actual HMA overlay thickness from the rubblization projects were compared with the predicted thickness obtained from the design software. The results of this study show that rubblization is a valid option to use in Iowa in the rehabilitation of PCC provided the foundation is strong enough to support construction operations during the rubblization process. The M-E structural design methodology developed during Phase I can estimate the HMA overlay thickness reasonably well to achieve long-lasting performance of HMA pavements. The rehabilitation strategy is recommended for continued use in Iowa under those conditions conducive for rubblization.
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
The Lifestyle-integrated Functional Exercise (LiFE) program is a way of reducing the risk of falls by integrating balance and strength activities into regular daily tasks. Unloading the dishwasher becomes an opportunity to improve strength. Brushing your teeth becomes an opportunity to improve balance. In the LiFE program, every daily task becomes an opportunity to improve balance and strength. This is a different approach to a traditional program where you would be required to complete a series of exercises a certain number of times a day for a set number of days each week. The trainer's manual outlines the principles of the LiFE program and provides a step-by-step guide for therapists and trainers to implement the program with their clients. It should be used in conjunction with the participant's manual so that the program is fully understood from both the trainer's and participant's perspectives.