PROPERTIES OF AIR MORTAR USING RECYCLED ROOF TILES
PROPERTIES OF AIR MORTAR USING RECYCLED ROOF TILES
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使用再生屋顶瓦的空气砂浆的性能
DOI：
10.14250/cement.71.633
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发表时间：
2017
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：
Keigo Yukawa;T. Uehara;Kohei Nakata;N. Kamei
： 使用过的屋瓦需要破碎、小型化来回收。粉碎的屋顶瓦片含有大量粉末。这被称为“再生屋顶瓦细骨料”。破碎屋顶瓦的特点是重量轻且多孔结构。本研究的最终目的是利用再生屋顶瓦细骨料进行空气砂浆的应用开发。此外，它所使用的屋顶瓦片是零排放的。对于瓷砖空气砂浆的应用，假设“涂层材料”（例如不需要高强度的防砂）来确定固化后的物理性能。在本研究中，我们阐明了孔隙率与各种强度之间的关系，并进一步阐明了与透水性的关系。实验表明，当砂灰比较小、水灰比较大时，气砂难以抑制发泡。使用再生屋顶瓦细骨料的气砂的抗压强度可以根据空隙率来估算。此外，静态弹性模量、弯曲强度、拉伸强度可以根据压缩强度来估计。当加气砂浆含气量为40％左右时，具有较高的透水性。空气砂浆推荐配合比为砂灰比2.5、水灰比40％、目标空气量40％。
： It is necessary to be crushed and downsized to recycle the used roof tiles. The crushed roof tiles are including a large quantity of powders. This is called “the recycled roof tiles fine aggregate”. Characteristics of the crushed roof tiles are lightweight and porous structure. The ultimate aim of this study is the Application development of air mortar using the recycled roof tiles fine aggregate. In addition, it is the zero-emission of the used roof tiles. For the application of the tiled air mortar, cured physical properties were ascertained assuming “coating material” such as sand-scattering prevention which does not require high strength. In this study, we clarify the relationship between the void ratio and various strengths and further clarify the relation with the water permeability. From experiments, when the sand cement ratio is small and the water cement ratio is large, air-mortal is difficult to constrain foaming. Compressive strength of the air-mortal using the recycled roof tiles fine aggregate can be estimated from void ratio. Furthermore, the static elastic modulus, bending strength, tensile strength can be estimated from compressive strength. When the air quantity of the air-mortar is about 40 ％, it has high water permeability. The recommended mixing proportion of the air mortar is that the sand cement ratio is 2.5, the water cement ratio is 40 ％ and the target air quantity is 40 ％.