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Methods for Investigation of the Hydration Process in Cementitious Materials 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 resonance spectroscopy. (Concrete and Mortar) http://www.ndt.net/article/v06n05/reinhard/reinhard.htm Influence of Mineral Admixtures on the Rheology of Cement Paste and Concrete 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 workability. (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build01/art011.html Visible Cement Dataset Visible Cement Dataset: A collection of three-dimensional data sets of hydrating cement, Plaster of Paris, and common brick material, all obtained using x-ray microtomography at the European Synchrotron Radiation Facility in Grenoble, France. Each data set includes a description (Concrete and Mortar) http://visiblecement.nist.gov/ Ultrasonic non-destructive testing for concrete Ultrasonic non-destructive testing for concrete: Photo and short description of the testing facilities at the National University of Singapore. (Concrete and Mortar) http://www.bdg.nus.edu.sg/Labs/Materials/ultra.htm Stress Due to Alkali-Silica Reaction in Mortars 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 (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build97/art019.html Comparison of Concrete Rheometers Comparison of Concrete Rheometers: Comparison of measurements from five types of concrete rheometers (four of them are commercial available). The aim was to provide data to establish correlations among them. (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build01/art074.html Alkali-Silica Reaction and High Performance Concrete Alkali-Silica Reaction and High Performance Concrete: Answers the question if high-performance concrete is susceptible to alkali-silica reaction. The paper contains details on the alkali-silica reaction mechanism and the factors influencing it as well as an overview on available test methods (ASTM C1260 and (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build95/art004.html Sprayed Concrete for Rock Support Sprayed Concrete for Rock Support: Details on dry-mix and wet-mix method, admixtures and fibres, durability, sprayed concrete equipment and spraying techniques. [PDF, 8.4 MB] (Concrete and Mortar)[PDF] http://www.degussa-ugc.com/NR/rdonlyres/emgfl6pcf33kbhjiuikbshrunqjgybm6s24czzih5rnyyyttv24nxkivpa233qfzdirvjezfw557zl/Sprayed+Concrete1.pdf Heat-insulating from no-fines Lightweight Concrete Heat-insulating from no-fines Lightweight Concrete: The major variables influencing the thermal conductivity of masonry materials are illustrated by taking blocks made from no-fines lightweight concrete as an example. With notes for an optimized product development. Reprint from Betonwerk Fertigteiltechnik (Concrete and Mortar) http://www.mpva.de/download/bft_w%E4rme_haufLB.pdf Argument for Using Coarse Cements in High-Performance Concretes. 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, 1999. Besides an abstract, the fulltext is available as PDF (371 kB). (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build99/art030.html Pull-out Response of Hooked Steel Fibers Pull-out Response of Hooked Steel Fibers: 'Concrete Science and Engineering' Vol. 1 (1999) comprises a research paper on the effect of mechanical clamping on the pull-out response of hooked steel fibers embedded in cementitious matrices. [PDF, 983 kB] (Concrete and Mortar) http://www.rilem.net/cse01.pdf Curing of High Strength Concrete Using Lightweight Aggregates 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] (Concrete and Mortar)[PDF] http://www.iwb.uni-stuttgart.de/bibliothek/festschr/weber.pdf Optimization of the Mixture of no-fines Lightweight Concrete Optimization of the Mixture of no-fines Lightweight Concrete: Details on the failure mechanisms of the texture and on the effects of aggregates, bonding agents and additives. [PDF, 828 kB] (Concrete and Mortar) http://www.mpva.de/download/bft_rezeptopt_haufLB.pdf Assessment of Commercial Corrosion Inhibiting Admixtures for Reinforced Concrete 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 in HTML and the fulltext as PDF (1.4 MB). (Concrete and Mortar) http://scholar.lib.vt.edu/theses/available/etd-122199-104756/ Resistance of Portland Cement Mortar to Chemical Attack Resistance of Portland Cement Mortar to Chemical Attack: A report on a study on the resistance of concrete to chemical attack by various inorganic and organic compounds, undertaken using mortar bars (1.5 x 1.5 x 10 cm). About 1200 specimens have been placed under test, many have been exposed for more than two y (Concrete and Mortar) http://www.portcement.org/pdf_files/RX204.pdf Introduction to Sprayed Concrete Introduction to Sprayed Concrete: Details of sprayed concrete, its application and uses, guidelines and specifications for both wet and dry processes. [PDF, 2.1 MB] (Concrete and Mortar) http://www.sca.org.uk/sca/Intro%20to%20Sprayed%20Concrete.pdf Modified Slump Test to Measure Rheological Parameters of Fresh 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 the most common field test is the slump test, and it is related only to the yield stress. Therefore, a simple field test met (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build98/art058.html Technical Dictionary of European Mortars - EMODICO Technical Dictionary of European Mortars - EMODICO: A compendium of terms and definitions concerning mortar products and their use, available in English, French, German, Spanish and Portuguese. The European Mortar Industry Organization (EMO) prepared this document in order to make technology exchanges easi (Concrete and Mortar) http://www.euromortar.com/con05.htm Concrete with Greater Resistance to Acid and to Biogenic Sulfuric Acid Corrosion Concrete with Greater Resistance to Acid and to Biogenic Sulfuric Acid Corrosion: Comparison on the resistance to biogenic sulfuric acid corrosion of mortars based on Portland cement and high-alumina cement. Informations about the stresses on the concrete in sewer systems and the formation of sulfuric acid by microorganisms and how to (Concrete and Mortar) http://www.hca.com/gfx/download/paper_bsk_sw.pdf Fresh Concrete Rheology - Recent Developments 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 the flow of concrete from either compositon or laboratory tests. Materials Science of Concrete VI. Proceedings, 2001. (Concrete and Mortar) http://fire.nist.gov/bfrlpubs/build01/art075.html