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an improved test for generating rapid, accurate, and reliable crack permeability data for cementitious materials
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نویسنده
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palin damian ,mo yu ,wiktor virginie ,jonkers henk marius
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منبع
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international journal of civil engineering - 2019 - دوره : 17 - شماره : 5 - صفحه:645 -652
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چکیده
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Presented is a modified test for generating crack permeability data for cementitious materials. single-parallel cracks were generated in mortar specimens. the width of the cracks was analysed through stereomicroscope and computer tomography, and the water permeability of the cracks was determined. reduction factors and crack flow models were generated, and the reliability of those predictions was assessed. cracks analysed through stereomicroscope produced reliable crack permeability predictions (r2 = 0.97–0.98), highlighting the importance of testing multiple (≥ 7) replicates. the modified test produced accurate cracks (i.e., cracks that were within 20 µm of their desired crack width) and was easy to use allowing rapid permeability data (i.e., 10 h for 21 specimens) to be generated. the modified test will be of great use for those wanting to generate rapid, accurate, and reliable crack permeability data for cementitious materials.
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کلیدواژه
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cementitious materials ,microcracking ,defined crack widths ,water permeability ,reliability ,durability
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آدرس
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delft university of technology, faculty of civil engineering and geosciences, section of materials and environment, the netherlands, university of maryland, department of environmental science and technology, usa, delft university of technology, faculty of civil engineering and geosciences, section of materials and environment, the netherlands, delft university of technology, faculty of civil engineering and geosciences, section of materials and environment, the netherlands
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Authors
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