Masonry Efflorescence

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Masonry Efflorescence

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Author : Reinar Christian
language : en
Publisher:
Release Date : 1998-01-01

Masonry Efflorescence written by Reinar Christian and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-01-01 with Concrete categories.

Masonry

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Author : John M. Melander
language : en
Publisher: ASTM International
Release Date : 1993

Masonry written by John M. Melander and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Calcium carbonate categories.

This volume contains papers presented at the symposium of the same name held in Miami, Florida in December 1992. The 28 peer-reviewed papers address topics in design and detail, installation and materials, testing and evaluation, and strategies and techniques. Annotation copyright Book News, Inc. Po

Efflorescence Of Masonry

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Author : Robert Shaw Boynton
language : en
Publisher:
Release Date : 1990

Efflorescence Of Masonry written by Robert Shaw Boynton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Efflorescence categories.

Design And Testing To Reduce Efflorescence Potential In New Brick Masonry Walls

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Author : IR. Chin
language : en
Publisher:
Release Date : 1993

Design And Testing To Reduce Efflorescence Potential In New Brick Masonry Walls written by IR. Chin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Alkali categories.

Efflorescence is a deposit of substances leached from the masonry either onto the surface or into the pores of brick masonry walls. These deposits may be the substances themselves or secondary reaction products of them with the atmosphere. Investigations of efflorescence on brick masonry walls on dozens of structures throughout the United States by the authors and their colleagues have revealed that the efflorescence on approximately 50 percent of the 43 samples studied consists of water soluble sulfate compounds and that the efflorescence on approximately 40 percent of the samples studied consist of calcium carbonate (carbonated calcium hydroxide) that is not soluble in water. Whenever sulfate compounds are predominant in efflorescence on brick masonry, the source of the efflorescence is usually the brick. Calcium carbonate "efflorescence" originates from the mortar. These data strongly suggest that water soluble efflorescence on brick masonry is most likely a sulfate compound which originated from the brick.

Moisture Problems In Historic Masonry Walls

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Author : Baird M. Smith
language : en
Publisher:
Release Date : 1984

Moisture Problems In Historic Masonry Walls written by Baird M. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Dampness in buildings categories.

Efflorescence Of Brick

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Author : J. Claude Jones
language : en
Publisher:
Release Date : 1906

Efflorescence Of Brick written by J. Claude Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1906 with Bricks categories.

Test Method For Determining The Efflorescence Potential Of Masonry Materials Based On Soluble Salt Content

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Author : John P. Sanders
language : en
Publisher:
Release Date : 2010

Test Method For Determining The Efflorescence Potential Of Masonry Materials Based On Soluble Salt Content written by John P. Sanders and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Bloom categories.

A single test method that is capable of determining the efflorescence potential for all materials in a masonry system is needed. The need for preconstruction testing is referenced in ASTM C1400-1--"Standard Guide for Reduction of Efflorescence Potential in New Masonry Walls"--but the standard acknowledges that there is not a suitable test method for all masonry materials. In the past, soluble salt measurements have been used to quantitatively access the efflorescence potential of masonry materials. To determine the water-soluble salt content of masonry materials, a simple leaching procedure was developed to remove the salts followed by quantification of the water-soluble salt content by ion chromatography. A series of modified efflorescence tests using salt solutions and real masonry materials has been used to determine the significance of water-soluble salt measurements. A clear threshold for soluble sulfate content that indicates a high potential for the development of visible efflorescence has been identified. Sulfate salts are the most common water-soluble compounds associated with efflorescence complaints.

Efflorescence

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Author : Ian R. Chin
language : en
Publisher:
Release Date : 2010

Efflorescence written by Ian R. Chin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Assemblies categories.

The test method determining the efflorescence potential of brick is found in ASTM C67-08, Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile. This test method is based upon the "wick tests" performed at the National Bureau of Standards in 1930 to determine the tendency for 684 brick to effloresce. Both Britain and Russia have also published efflorescence test methods for brick. From 1995 through 2006, Task Group C15.02.26 on Efflorescence, a subcommittee of ASTM C15.02 on Brick and Structural Clay Tile, evaluated the effectiveness of the ASTM C67-08 efflorescence test method. C15.02 is a subcommittee of committee C15 on Manufactured Masonry Units. The performance results for the ASTM, British, Russian and a modified ASTM C67-08 test on a standard brick were compared. This evaluation revealed that the ASTM C67-08 and the Russian efflorescence test methods were equally effective in predicting efflorescence potential of brick. The British test method was shown not to be effective in predicting efflorescence potential of brick. The efflorescence that developed on the types of brick rated as "effloresced" was more extensive and intense on the brick tested by the ASTM C67-08 method than the brick tested by the Russian method. In 1998, Task Group C15.05.15 on Efflorescence of Masonry Assemblies of ASTM subcommittee C15.05 on Masonry Assemblies prepared ASTM C1400-07, Standard Guide for Reduction of Efflorescence Potential in New Masonry Walls. C15.05 is a subcommittee of committee C15 on Manufactured Masonry Units. Subsequently, Task Group C15.05.15 began testing to obtain information to develop a test method to predict efflorescence potential in new masonry assemblies. The testing is ongoing. The various test methods evaluated to date include the following: (1) Open top plastic box with brick test specimen inserted in each face and filling of the box with a slurry of the test mortar ingredients; (2) open top brick masonry box constructed with the brick and mortar test specimens and filling of the box with water; (3) brick masonry wallettes constructed with the brick and mortar test specimens and placed in 1-in.-deep water and exposed to moving air from a fan; and (4) masonry cubes made from ground-up brick test specimens and mortar test specimens and placed in 1-in.-deep water and exposed to moving air from a fan. This paper presents the results of the evaluation of the ASTM C67-08 efflorescence test method by Task Group C15.02.26 and of the efforts made to date by Task Group C15.05.15 to develop an efflorescence test method for masonry assemblages.

Efflorescence On Masonry

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Author : BRANZ.
language : en
Publisher:
Release Date : 2000

Efflorescence On Masonry written by BRANZ. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Concrete categories.

Efflorescence

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Author : Portland Cement Association
language : en
Publisher:
Release Date : 1991

Efflorescence written by Portland Cement Association and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Efflorescence categories.