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Development of Building Finishing Boards with New Materials

新材料建筑装饰板的开发

基本信息

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

项目摘要

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.

为了开发燃煤电厂大量产生的粉煤灰的有效利用，进行了建筑饰面板的开发试验。对不同类型的纤维增强砂浆进行了试验研究，从强度性能、耐火性能和抗冻融性能等方面对其性能进行了测试。本研究利用大量的粉煤灰开发出几种新型的人工细骨料，并采用高模量维纶、碳纤维等新型纤维作为增强材料，取得了以下研究成果：（1）。维纶网对粉煤灰砂浆有很好的补强效果。由于这种砂浆的重量相当轻，它将是有用的建筑装饰板。（二）、粉煤灰砂浆具有足够的耐火性。粉煤灰砂浆中的纤维似乎得到了保护，尽管纤维本身很容易燃烧。粉煤灰砂浆，包括用过的纸浆是非常正确的，并具有耐火性，太。（三）、虽然普通粉煤灰砂浆本身的抗冻融作用较弱，但纤维增强粉煤灰砂浆大多具有足够的抗冻性。这说明纤维增强可以大大提高胶凝材料的抗冻融性能。（四）、对纤维增强水泥基材料的断裂力学进行了理论和实验研究。指出不仅要评估裂纹吸收的能量，而且要评估拉伸软化性能，以了解增强机理，并利用该机理设计和/或开发新的复合材料。