Development of Building Finishing Boards with New Materials

新材料建筑装饰板的开发

• 批准号: 63850125
• 负责人: MIHASHI Hirozo
• 金额: $ 1.66万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63850125/
• 关键词: Fly ash sand; High Modulus Vinylon; Carbon Fiber; Fiber Reinforced Mortar; Fracture Energy; Tension Softening; Fire Resistance; Freezing and Thawing Resistance; 石炭灰; ハイモデュラスビニロン繊維; 破壊エネルギ; モルタル複合材; Fly ash sand; High Modulus Vinylon; Carbon Fiber; Fiber Reinforced Mortar; Fracture Energy; Tension Softening; Fire Resistance; Freezing and Thawing Resistance; 石炭灰; ハイモデュラスビニロン繊維; 破壊エネルギ; モルタル複合材

In order to develop an effective usage of fly ash which is produced a lot from coal fire electric power plants, development of building finishing boards were tried. Various types of fiber reinforced mortar were experimentally studied to test the performance from the view points of the strength properties, fire resistance and freezing and thawing resistance. In this study, several types of artificial fine aggregates which have been newly developed by using large amount of fly ash, and reinforcements with new types of fibers such high modulus vinylon and carbon fiber and so on.The following results were obtained: (1). Fly ash sand mortar may be reinforced effectively by vinylon meshes. Since such mortar is rather less weight, it will be useful as building finishing boards. (2). Fly ash sand mortar has a sufficient resistance to a fire. Fibers in fly ash sand mortar seems to be protected, even though the fiber itself is easily burnt. Fly ash sand mortar including used paper pulp is very right and has a resistance to a fire, too. (3). Although a plain fly ash sand mortar itself is rather weak to freezing and thawing action, most of fibre reinforced fly ash mortar have a sufficient resistance to frost damage. It means that fiber reinforcement can improve a lot the freezing and thawing resistance properties of cementitious materials. (4). Fracture mechanics of fiber reinforced cementitious materials was studied theoretically and experimentally. It has been pointed out that not only the absorbed energy by cracking but also the tension softening properties should be evaluated to understand the reinforcing mechanism and to use the mechanism for designing and/or developing new composite materials.

为了开发有效的粉煤灰用法，该粉煤灰是由煤炭电动发电厂产生的很多，因此尝试了建筑物装饰板的开发。实验研究了各种类型的纤维增强砂浆，以从强度性能，防火性，冻结和融化耐药性的视角测试性能。在这项研究中，通过使用大量粉煤灰和具有新型纤维的增强型，这些纤维具有高模量乙烯龙和碳纤维等，这些结果已获得以下结果：（1）。葡萄砂砂浆可以通过乙烯龙网的有效增强。由于这种砂浆的重量较小，因此可以用作建筑饰面板。 （2）。粉煤灰砂砂浆对火有足够的抵抗力。即使纤维本身很容易燃烧，粉煤灰砂砂浆中的纤维似乎也受到保护。包括二手纸浆在内的粉煤灰砂砂浆非常正确，并且对火也有抵抗力。 （3）。尽管普通的粉煤灰砂砂浆本身对于冰冻和解冻的作用较弱，但大多数纤维增强的粉煤灰砂浆具有足够的抵抗力可损坏霜冻。这意味着纤维钢筋可以改善胶合材料的冻结和解冻抗性特性。 （4）。在理论上和实验中研究了纤维增强水泥材料的断裂力学。有人指出，不仅应通过破裂来吸收的能量，而且还应评估张力软化特性，以了解增强机制，并使用该机制设计和/或开发新的复合材料。