A Test Method For Measuring The Efflorescence Potential Of Masonry Mortars
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A Test Method For Measuring The Efflorescence Potential Of Masonry Mortars
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Author : AW. Isberner
language : en
Publisher:
Release Date : 1985
A Test Method For Measuring The Efflorescence Potential Of Masonry Mortars written by AW. Isberner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Alkali migration categories.
Efflorescence of masonry construction is a natural occurrence when masonry is constructed in other than under normal conditions. Early age efflorescence may occur shortly after construction has been completed; late age efflorescence may occur if design and construction considerations and building maintenance are not properly attended. Efflorescence, once understood, is deemed beneficial toward identifying problems associated with building performance and indicating corrective action to be taken to remedy the situation.
Masonry Research Application And Problems
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Author : John T. Conway
language : en
Publisher: ASTM International
Release Date : 1985
Masonry Research Application And Problems written by John T. Conway and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Technology & Engineering 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.
A Method To Determine Efflorescence And Water Permeance Of Masonry Mortars
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Author : HA. Harris
language : en
Publisher:
Release Date : 1985
A Method To Determine Efflorescence And Water Permeance Of Masonry Mortars written by HA. Harris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Efflorescence categories.
A laboratory test procedure to measure the efflorescence and water permeance of masonry mortars is presented. Quantitative and qualitative values of the efflorescence growth compounds can be measured using a technique that accelerates their development in a controlled laboratory environment. Using this same simple test apparatus, a minor change in testing procedures will also provide quantitative data on the water permeance of masonry mortars.
Development Of Accelerated Test Method For Measuring And Minimizing Efflorescence Potential
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Author : Ronald L. Kozikowski
language : en
Publisher:
Release Date : 2007
Development Of Accelerated Test Method For Measuring And Minimizing Efflorescence Potential written by Ronald L. Kozikowski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Efflorescence categories.
Efflorescence is an aesthetic nuisance in the masonry industry that comes in many forms and is due to numerous causes. This research was focused on the development of an accelerated test to assess efflorescence potential for the purpose of studying methods and/or materials to minimize its occurrence. An extensive literature search was conducted prior to the research to gather information on efflorescence mechanisms, reaction components, avoidance, and existing test methods in an effort to aid in the development of the accelerated test. The accelerated test was successfully developed along with a means of quantifying efflorescence potential. Workmanship, admixtures, and supplementary cementitious materials were evaluated according to this method in an effort to find ways of minimizing efflorescence. Workmanship was evaluated by studying the effects of tooling on masonry joints. Admixtures and supplementary materials showing promise in early trials were studied at varying dosage rates to analyze the most effective quantity for minimizing efflorescence. The occurrence of efflorescence could not be totally eliminated utilizing the selected variables, but efflorescence severity was notably decreased by certain variables. An addition of 7.5% cement kiln dust by weight of cement proved to be the most effective means of minimizing efflorescence.
Masonry
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Author :
language : en
Publisher:
Release Date : 1985
Masonry written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Masonry categories.
Astm Bulletin
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Author : American Society for Testing Materials
language : en
Publisher:
Release Date : 1959
Astm Bulletin written by American Society for Testing Materials and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Building materials categories.
Standard Test Method For Measuring The Drying Shrinkage Of Masonry Mortar Withdrawn 2019
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Author :
language : en
Publisher:
Release Date :
Standard Test Method For Measuring The Drying Shrinkage Of Masonry Mortar Withdrawn 2019 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Astm Masonry Standards For The Building Industry
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Author :
language : en
Publisher:
Release Date : 2008
Astm Masonry Standards For The Building Industry written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Masonry categories.
Rev. ed. of: ASTM International's masonry standards for the building industry. 5th ed. 2004.