Development of a Manual Crack Quantification and Automated Crack Measurment System, Project TR-457 Final Report, 2005

Final report produced by DOT on development of manual crack quantification and automatic crack measurment system.

Retirement Investors' Club Plan Document; 457 Employee Contribution Plan, 2005

This Plan is intended to satisfy the requirements for an “eligible deferred compensation plan” under Section 457 of the Internal Revenue Code of 1986, as amended from time to time, and all other applicable provisions of law and the regulations issued thereunder. This Plan may be referred to as “The State of Iowa’s 457 Employee Contribution Plan”, which is one of two plans that comprise the Retirement Investors’ Club (RIC).

Evaluation of the RapidAir 457 Air Void Analyzer, March 2012

An adequate air void system is imperative to produce concrete with freeze-thaw durability in a wet freeze environment such as found in Iowa. Specifications rely on a percentage of air obtained in the plastic state by the pressure meter. Actual, in place air contents, of some concrete pavements in Iowa, have been found with reduced air content due to a number of factors such as excessive vibration and inadequate mixing. Determining hardened air void parameters is a time consuming process involving potential for human error. The RapidAir 457 air void analyzer is an automated device used to determine hardened air void parameters. The device is used in Europe and has been shown to quickly produce accurate and repeatable hardened air results. This research investigates how well the RapidAir 457 results correlate to plastic air content and the image analysis air technique. The repeatability and operator variation were also investigated, as well as, the impact of aggregate porosity and selection of threshold value on hardened air results.

Français 457

Contient : 1° « L'Orologe de sapience », de « Frere JEHAN DE SOUBZ AULBE » ; 2° « Le Livret de PIERRE DE LUXEMBOURG »

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 457 - Zusatz für die 2. Auflage der "Die beiden Grundprobleme der Ethik"

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Ms.Ff.F.Stoltze 3. 457 - Brief von Friedrich Stoltze an Lyda Stoltze

Hanau, Seligenstadt, Erbach, Heidelberg, Bensheim

Chas, Susana. Los que pintan la aldea : panorama general de la novela en Córdoba (1980-2003). Córdoba, Rubén Libros, 2004, 457 p.

Fil: Castellino, Marta Elena. Universidad Nacional de Cuyo. Facultad de Filosofía y Letras