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首页> 外文会议>Tenth international conference on superplasticizers and other chemical admixtures 2012 >Characterization of Colored Self-Compacting Concretes
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Characterization of Colored Self-Compacting Concretes

机译：有色自密实混凝土的表征

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This paper presents the results of an investigation carried out to develop colored self-compacting concretes (SCCs), especially devoted to architectural structures. Two different inorganic pigments were tested, both at a dosage of 20 kg [44.09 lb] per cubic meter of concrete, replacing limestone filler. The first is cobalt-salt based (for blue-colored SCC), the other iron-oxide based (for red colored SCC). SCC mixtures were characterized in the fresh state by means of slump flow and V-funnel tests as well as after hardening by means of compression tests and free dying shrinkage measurements. The influence of the inorganic pigments as well as of fly ash addition on the rheological behavior of the SCCs was also previously studied by means of rheological tests on cement pastes. Low water/ binder ratio (0.45) was always adopted for durability reason. Moreover, shrinkage-free SCC was studied due to the combined use of a CaO-based expansive agent and a shrinkage reducing admixture.
机译：本文介绍了为开发有色自密实混凝土（SCC）（特别是致力于建筑结构）而进行的研究的结果。测试了两种不同的无机颜料，每种均以每立方米20千克[44.09磅]的剂量代替石灰石填料。第一种是钴盐基（用于蓝色SCC），另一种是氧化铁基（用于红色SCC）。 SCC混合物通过坍落流动和V型漏斗测试以及在硬化后通过压缩测试和自由染色收缩率测量，以新鲜状态表征。先前还通过水泥浆的流变试验研究了无机颜料以及粉煤灰添加对SCC流变行为的影响。出于耐久性原因，始终采用低水/粘合剂比（0.45）。此外，由于结合使用基于CaO的膨胀剂和减少收缩的混合物，对无收缩SCC进行了研究。

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