K. Dziedzic, M. Dąbrowski, A. Antolik, A. Glinicki
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引用次数: 3
Abstract
The purpose of introducing air into the concrete mix is to increase the freeze-thaw and scaling resistance of hardened concrete. The utility of the sequential pressure method ( Super Air Meter - SAM) for assessment of the air entrainment quality was verified by comparing the results obtained with this method with the results of the air-void analysis of hardened concrete. The results of the tests carried out on mixes designed and produced at a laboratory and the mixes produced on an industrial scale during expressway construction are considered. Furthermore, the relationships between the SAM number and the micro air-void content A 300 in hardened concrete and the freeze-thaw and de-icing salt resistance are analysed as part of this research. A clear co-relation between the SAM number, a parameter that characterises the air-entrainment of the concrete mix, and the microvoid content has been demonstrated.
在混凝土配合比中引入空气的目的是增加硬化混凝土的抗冻融性和抗结垢性。通过将连续压力法(Super Air Meter - SAM)与硬化混凝土的空隙分析结果进行对比，验证了连续压力法(Super Air Meter - SAM)评价夹带空气质量的有效性。考虑了实验室设计和生产的混合料试验结果和高速公路建设中工业规模生产的混合料试验结果。此外，本文还分析了硬化混凝土中SAM数与微气孔含量a300及抗冻融除冰盐性能之间的关系。一个明确的相互关系之间的SAM数，一个参数，表征空气的混合混凝土的夹带，和微孔隙含量已被证明。
期刊介绍：
The quarterly journal Roads and Bridges – Drogi i Mosty is published by the Road and Bridge Research Institute since September 2012 as a bilingual English-Polish journal. From 2002 to 2012 the journal was printed under the title Drogi i Mosty. The journal mission is to promote current achievements in science and technology in the field of road and bridge engineering. The journal is intended as a forum of the exchange of innovative concepts and solutions between the researches from different countries. Original scientific and technical papers in the field of civil engineering and related engineering sciences are published. The scope of Roads and Bridges – Drogi i Mosty includes design, construction, maintenance and safe use of roads, bridges, airports and other transportation structures.
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