1.合肥市建筑质量安全监督站;2.北京城建集团有限责任公司;3.清华大学建材所
TU528.1
1.合肥市建筑质量安全监督站;2.北京城建集团有限责任公司;3.清华大学建材所
研究了陶瓷砖抛光微粉混凝土的力学性能和耐久性。结果表明陶瓷砖抛光微粉在混凝土中能发生火山灰反应,同时具有填充效应。这两种作用促进了孔隙的细化,在宏观上体现为后期力学性能的增长。陶瓷砖抛光微粉掺量10%和20%时,砂浆的90天强度活性指数分别为117.34%和114.01%；混凝土在90天龄期时的强度相对值分别达到100.31%和97.80%。此外,陶瓷砖抛光微粉能显著提高混凝土的抗氯离子渗透性。在90天时纯水泥混凝土为高渗透性；掺陶瓷砖抛光微粉后混凝土的渗透等级均降低。混凝土中陶瓷砖抛光微粉掺量10~20%时能获得可接受的力学性能和良好的耐久性。
The mechanical properties and durability of concrete incorporating ceramic tile-polished powder (CPP) were systematically investigated. The findings indicate that CPP undergoes a pozzolanic reaction in the concrete, coupled with a notable filler effect. These mechanisms contribute to the refinement of the pore structure, which is manifested in the enhancement of mechanical properties at later stages. The strength activity index of mortar at 90 days reached 117.34% and 114.01% with the inclusion of 10% and 20% CPP, respectively. Correspondingly, the relative strength of concrete at 90 days was 100.31% and 97.80% for the same respective dosages. Additionally, the incorporation of CPP significantly improved the resistance of concrete to chloride ion penetration. At 90 days, while pure cement concrete exhibited high permeability, the permeability level of concrete was markedly reduced following the addition of CPP. Optimal mechanical properties and enhanced durability were achieved with 10–20% incorporation of CPP in the concrete mix.
