Quantification of the grain form influence on self-compacting concrete

晶粒形状对自密实混凝土影响的量化

• 批准号: 70100854
• 负责人: Professor Dr.-Ing. Horst-Michael Ludwig
• 金额: --
• 依托单位: F. A. Finger-Institut für Baustoffkunde
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/70100854?language=en
• 关键词: Quantification; grain; form; influence; self

In production of aggregates like gravel and crushed stone by crushing processes there are up to 20 M. -% crushed sand. Cause of the high amount of finest aggregates and angular particle shapes therefore the crushed sands need higher required water and is hardly used for conventional concrete. However, the existing crushed stone resources can find a new ap-plication by the increasing use and development of self compacting concrete (SCC). It is necessary to clarify the influence of particle shape on the processing properties of the mortar. With the development of new measurement techniques, the particle shape and particle size of the powder can be quantified and analyzed till the nanometer range. The aim is to verify these new methods and to integrate into existing analytical methods to rely on accurate and efficient analysis of data in future.

在碎石和碎石等骨料的生产过程中，最多有20 M。-%的碎砂。由于大量的细骨料和角状颗粒形状，因此碎砂需要更高的用水量，并且几乎不用于常规混凝土。而随着自密实混凝土的广泛应用和发展，现有的碎石资源将得到新的利用。有必要明确颗粒形状对砂浆加工性能的影响。随着新的测量技术的发展，粉末的颗粒形状和粒度可以量化和分析，直到纳米范围。其目的是验证这些新方法，并将其整合到现有的分析方法中，以便在未来对数据进行准确和有效的分析。