FUNDAMENTAL EXPERIMENTS OF AIR MORTAR WITH WASTE ROOF TILES FINE AGGREGATE
FUNDAMENTAL EXPERIMENTS OF AIR MORTAR WITH WASTE ROOF TILES FINE AGGREGATE
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废瓦细骨料空气砂浆基础试验
DOI：
10.14250/cement.69.687
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
N. Kamei
中科院分区：
文献类型：
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作者：
Yoshinari Kuroki;T. Uehara;Keigo Yukawa;N. Kamei
：日本房屋拆除施工排放的废旧屋面瓦，每年有100 - 200万吨。迄今为止，大部分使用过的屋顶瓦片都被填埋。有必要进行粉碎和缩小，以回收使用过的屋顶瓦，发生在整个土地。破碎的屋顶瓦片包括大量的粉末。这就是所谓的回收屋面瓦细骨料。本研究的最终目的是回收屋面瓦细骨料的有效利用。它是零排放的屋顶瓦片。破碎屋面瓦的特点是轻质和多孔结构。以轻质、多孔结构为重点，以应用于加气砂浆为目的，通过试验揭示了其基本性能。由于其含有大量的粉末和多孔性，再生屋面瓦细骨料具有高吸水性能。然而，很难控制材料的水分状态。此外，再生屋面瓦细集料吸附拌和用水，降低了混凝土的和易性。利用再生屋面瓦细集料制成的加气砂浆，通过引气来对抗高吸水性能，改善了和易性。试验表明，用再生屋面瓦细集料配制的加气砂浆具有与普通加气砂浆相当的强度。具有透水性，满足透水性路面的透水性系数。
： The used roof tiles are discharged by the dismantling construction of Japanese house； there are quantities of 1,000,000-2,000,000 tons per one year. Most of the used roof tiles have been landfill hitherto. It is necessary to be crushed and downsized to recycle the used roof tile which occurred across the land. The crushed roof tiles are including a large quantity of powders. This is called the recycled roof tiles fine aggregate. The ultimate aim of this study is the effective use of the recycled roof tiles fine aggregate. And it is the zero-emission of the used roof tiles. Characteristics of the crushed roof tiles are lightweight and porous structure. Focusing on lightweight and porous structure, the basic properties reveal based on experiments on the purpose of application to air mortar. Since it contains a large amount of the powder and is porous, the recycled roof tiles fine aggregate have a high water absorption performance. However, it is difficult to control the moisture status of the materials. Furthermore, the recycled roof tiles fine aggregate adsorbed the mixing water, as a result, reduced the workability used in concrete. By entraining air against high water absorption performance, the air mortar using the recycled roof tiles fine aggregate becomes an improvement of workability. From experiments, the air mortar using the recycled roof tiles fine aggregate has satisfactory strength like the normal air mortar. And it has the water permeability, which satisfies the coefficient of water permeability of the porous pavement.