Browsing ICAR Technical Reports by Title
Now showing items 20-38 of 38
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ICAR Mixture Proportioning Procedure for Self-Consolidating Concrete
(2007)Self-consolidating concrete (SCC) is an advanced type of concrete that can flow under its own mass without vibration, pass through intricate geometrical configurations, and resist segregation. The use of SCC can result in ... -
Increased Single-Lift Thicknesses for Unbound Aggregate Base Courses
(1998-10)A study was conducted to evaluate the feasibility of compacting unbound aggregate base courses in thicker lifts than currently permitted by state departments of transportation (DOTs). At present, the majority of states ... -
An investigation of the status of by-product fines in the United States
(University of Texas at Austin. International Center for Aggregates Research, 1997-11)The handling and disposal of fines produced as a result of the aggregate crushing and production process are some of the major problems facing the aggregate industry today, having both economic and environmental implications. ... -
Methodology for designing aggregate mixtures for base courses
(2009-08-31)The aggregate base layer is a vital part of the flexible pavement system. Unlike rigid pavements, the base layer provides a substantial contribution to the load bearing capacity in flexible pavements, and this contribution ... -
The Prediction of Coarse Aggregate Performance by Micro-Deval and Soundness Related Aggregate Tests
(2006-07)This research project concentrated on determining whether or not a correlation existed between laboratory aggregate tests and observed aggregate field performance. For this purpose, aggregate samples were collected from ... -
Prediction of Working Load Displacements Under Plate Loading Tests from Seismic Stiffness Measurements
(1998-10)A study was conducted to evaluate the feasibility of compacting unbound base courses in thicker lifts than currently permitted by state departments of transportation (DOTs). At present, the majority of states allow a maximum ... -
Qualification of Concrete Workability by Means of the Vibrating Slope Apparatus
(2003-12)A new device, the Vibrating Slope Apparatus (VSA), developed for qualifying concrete workability under vibration, was borrowed by the International Center for Aggregates Research (ICAR) Project 105 researchers for evaluation. ... -
Rapid Test to Establish Grading of Unbound Aggregate Products: An Evaluation of Automated Devices to Replace and Augment Manual Sieve Analyses in Determining Aggregation Gradation
(2002-02)Several automated devices are commercially available for measuring the gradation of unbound stone aggregates. These computerized machines, which provide a rapid alternative to manual sieving, capture and process two-dimensional ... -
Rapid Test to Establish Grading of Unbound Aggregate Products: Automation of Aggregate Characterization Using Laser Profiling and Digital Image Analysis
(2002-06)This final project report describes the development of a laser scanning device for measuring the gradation and other morphological characteristics of unbound construction aggregates. The device is called the LASS, for ... -
Rapid Test to Establish Grading of Unbound Aggregate Products: Evaluation of Potential Aggregate Grading Technologies
(2000-02)A research study is underway to develop automated methods for rapidly grading aggregates on the production line in a typical aggregate separation or mixing facility. This interim report serves to document preliminary work ... -
Role of Aggregate Characteristics to Load in SMA
(2006-08)Stone matrix asphalt (SMA) mixtures rely on stone-on-stone contacts among particles to resist applied forces and permanent deformation. Aggregates in SMA should resist degradation (fracture and abrasion) under high stresses ... -
Sensitivity analysis of flexible pavement response and AASHTO 2002 design guide to properties of unbound layers
(2004-05)Unbound granular materials are generally used in road pavements as base and subbase layers. The granular materials provide load distribution through aggregate contacts to a level that can help the subgrade to withstand the ... -
Structural Characteristics of Unbound Aggregate Bases to Meet AASHTO 2002 Design Requirements: Interim Report
(2001-07)This report gives the results of a study of the properties of unbound aggregate base materials using both laboratory testing data from full scale field tests in Illinois, Georgia, and Texas, and a model of cross-anisotropic ... -
A Study on the Feasibility of Compacting Unbound Graded Aggregate Base Courses in Thicker Lifts Than Presently Allowed by State Departments of Transportation
(1998-10)A study was conducted to evaluate the feasibility of compacting unbound aggregates base courses in thicker lifts than currently permitted by state departments of transportation (DOTs). At present, the majority of states ... -
Summary of Concrete Workability Test Methods
(2003-08)This document describes 61 test methods for measuring concrete workability. Many more test methods have been developed for a single project or for a specific application and have been sparsely reported in the literature, ... -
Test Methods for Evaluating Preventive Measures for Controlling Expansion due to Alkali-Silica Reaction in Concrete
(2006-12)This paper provides a critical evaluation of the various methods available for testing the efficacy of measures for preventing expansion due to alkali-silica reaction (ASR) in concrete containing deleteriously reactive ... -
Use of High Fines Concrete (HFC) in Insulated Concrete Form (ICF) Construction
(2001-09)This project work consisted of developing technical data to justify, from the standpoint of material properties (of aggregate fines and HFC), construction efficiency, cost competitiveness, and energy performance, a basis ... -
User’s Manual for Finite Element Pavement Response Analysis Software TTI-PAVE
(2009-10-30)A finite element program was developed to calculate the responses of the pavement under traffic load. The finite element procedure and the code was originally derived by Owen and Hinton (1980) using elasto-plastic formulation. ... -
Utilizing Aggregates Characteristics to Minimize Cement Content in Portland Cement Concrete
(2009-02-06)Aggregate, the main constituent of concrete, constitutes 60 to 80% of the total volume of concrete. Proper selection of the type and particle size distribution of the aggregates affects the workability and the hardened ...
