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Stress Due to Alkali-Silica Reaction in Mortars      A test method and test apparatus is presented. It does not measure the length change but measures the stress generated by the swelling of the gel. The force required to prevent expansion is measured over time while the specimen and frame are immersed in a solution of 1-N NaOH at 50°C. With some test results. URL: http://fire.nist.gov/bfrlpubs/build97/art019.html Title: 1997 Building Publications - Stress Due to Alkali-Silica Reaction in Mortars. Desc: Alkali-silica reaction (ASR) causing deterioration of mortars and concretes is due to the swelling of gel formed by the reaction of alkali in cement-based materials with reactive silica in aggregates, in the Category: Materials\ Concrete and Mortar Specialized in: Building Technology - Alkali-silica Reaction - Mortar - Stress Measurements - Young Modulus   Web Traffic Analysis     Similar Companies      Massachusetts Institute of Technology (MIT) : Department of Materials Science and Engineering. Includes information about programs and photo of lab facility. Located in the USA. Curing of High Strength Concrete Using Lightweight Aggregates: Report about tests with prewetted lightweight aggregates as a water supply in high strenght concrete. [PDF, 468 kB] [PDF] Comparison of Concrete Rheometers : Comparison of measurements from five types of concrete rheometers (four of them are commercial available). The aim was to provide Assessment of Commercial Corrosion Inhibiting Admixtures for Reinforced Concrete: This report conveys the results of a three-part laboratory study of corrosion inhibiting admixtures in concrete. The abstract is available Argument for Using Coarse Cements in High-Performance Concretes. : Investigation of the effects of particle size distribution and water-to-cement ratio on hydration kinetics. Printed in: Cement and Concrete Research, Axim Concrete: AXIM delivers a broad range of admixtures and specialized chemicals that enhance concrete and masonry performance, as well as improve Influence of Mineral Admixtures on the Rheology of Cement Paste and Concrete: Rheological tests on cement paste were used to successfully select the type and dosage of mineral admixtures that improved concrete Modified Slump Test to Measure Rheological Parameters of Fresh Concrete: The ease of placement of concrete depends upon at least two physical properties, the yield stress and plastic viscosity. Currently Methods for Investigation of the Hydration Process in Cementitious Materials: Comparison of results investigating the hydration process in cementitious materials. Methods used are ultrasound, scanning electron microscopy and nuclear magnetic Fresh Concrete Rheology - Recent Developments: An overview of the tests that are commonly used to measure the rheology of fresh concrete and methods to predict   Home | Contact Us | Privacy Notice | Submit Site | Submit Press Release © 2004-2008 MechDir. All Rights Reserved