UK Products and Services - Concrete and Mortar

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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 C227). Besides an abstract the fulltext is available as PDF (24 pages, 1.3 MB).
(http://fire.nist.gov/bfrlpubs/build95/art004.html)

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).
(http://fire.nist.gov/bfrlpubs/build99/art030.html)

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).
(http://scholar.lib.vt.edu/theses/available/etd-122199-104756)

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.
(http://fire.nist.gov/bfrlpubs/build01/art074.html)

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 improve the resistance of concrete to attack by acid. [PDF, 1.9 MB]
(http://www.hca.com/gfx/download/paper_bsk_sw.pdf)

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]
(http://iwb.uni-stuttgart.de/Festschr/weber.pdf)

Fiber Reinforced Shotcrete

Summary information and test results for High Performance Polypropylene (HPP) fibers compared to steel fibers. [PDF, 49 kB]
(http://195.212.125.126/en/pdffiles/fibreskfg52000.pdf)

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.
(http://fire.nist.gov/bfrlpubs/build01/art075.html)

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 7/1999. [PDF, 1.2 MB]
(http://www.mpva.de/download/bft_wÃ¤rme_haufLB.pdf)

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.
(http://fire.nist.gov/bfrlpubs/build01/art011.html)

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]
(http://www.sca.org.uk/sca/Intro%20to%20Sprayed%20Concrete.pd)

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.
(http://www.ndt.net/article/v06n05/reinhard/reinhard.htm)

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 method intended to provide an evaluation of the two Bingham rheological parameters, yield stress and plastic viscosity, was developed. Description of apparatus and test procedure.
(http://fire.nist.gov/bfrlpubs/build98/art058.html)

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]
(http://www.mpva.de/download/bft_rezeptopt_haufLB.pdf)

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]
(http://www.rilem.net/cse01.pdf)

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 years. [PDF, 3.0 MB]
(http://www.portcement.org/pdf_files/RX204.pdf)

Sprayed Concrete for Rock Support

Rock support book for download (chapterwise, PDFs). Details on dry-mix and wet-mix method, admixtures and fibres, durability, sprayed concrete equipment and spraying techniques.
(http://www.ugc.mbt.com/en/rocksupport.htm)

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 50Â°C. With some test results.
(http://fire.nist.gov/bfrlpubs/build97/art019.html)

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 easier.
(http://www.euromortar.com/con05.htm)

Ultrasonic non-destructive testing for concrete

Photo and short description of the testing facilities at the National University of Singapore.
(http://www.bdg.nus.edu.sg/Labs/Materials/ultra.htm)

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 of the sample, the raw 3-D data, and several two-dimensional images extracted from the raw data. Also included are several C utility programs useful for exploring these datasets.
(http://visiblecement.nist.gov/)

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