Research and Development of High Performance Resin Concrete and Structural Design

高性能树脂混凝土研发及结构设计

• 批准号: 05555122
• 负责人: KOYANAGI Wataru
• 金额: $ 1.92万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555122/
• 关键词: Resin concrete; Unsaturated polyester resin; Epoxy resin; Heat distortion temperature; Setting shrinkage; Reinforcement; Arresting stress; 拘束応力; 靭性; 強度低下

Resin concrete is a concrete where high polymers are used as binding material instead of cement in ordinary cement concrete. Research and development of high performance resin concrete as well as the study on the structural design method of resin concrete member based on the material properties were made. Principal conclusions derived are as follows ;(1) In order to develop non-magnetic high strength building materials, aramid fiber reinforced unsaturated polyester resin concrete was made and mechanical properties of hardened concrete as well as workability and placability of fresh concrete were examined. Flexural strength and toughness of the concrete were improved when aramid fibers were added. But workability decreased on the contrary. The optimum quantity of aramid fiber addition varied with the purpose of improvement. The degree of improvement of mechanical properties was higher when steel fiber was used than when aramid fiber was.(2) Dynamic Young'modulus and logarithmic decrement of resin concrete made of unsaturated polyester and of epoxy resin were examined in various ambient temperatures. It was concluded that heat distortion temperature of resin concrete was able to be estimated from the heat distortion temperature of resin used, irrespective of its resin content.(3) Reinforcement is always provided in case of structural use of resin concrete. However, internal stress is induced in the structural member because polyester resin has fairly large setting shrinkage. The effect of this stress must be taken into consideration in the structural design.Reinforced resin concrete flexural members were made and the generation of the arresting stress was observed in the course of time. Time dependent physical and mechanical properties were also measured. The effect of the arresting stress will be calculated by the properties of resin concrete in very early period, but it may be lowered during the lapse of time in fairly high temperature.

树脂混凝土是用高聚物代替普通水泥混凝土中的水泥作为粘结材料的混凝土。研究开发了高性能树脂混凝土，并对基于材料性能的树脂混凝土构件结构设计方法进行了研究。（1）为开发无磁高强建筑材料，制备了芳纶纤维增强不饱和聚酯树脂混凝土，并对硬化混凝土的力学性能和新拌混凝土的工作性、浇筑性进行了研究。芳纶纤维的掺入提高了混凝土的抗折强度和韧性。但工作性却相反。芳纶纤维的最佳添加量因改进目的而异。钢纤维对复合材料力学性能的改善程度高于芳纶纤维。(2)研究了不饱和聚酯树脂混凝土和环氧树脂混凝土在不同环境温度下的动态杨氏模量和对数衰减率。得出的结论是，树脂混凝土的热变形温度能够估计从所用树脂的热变形温度，而不管其树脂含量。(3)在结构上使用树脂混凝土时，总是提供钢筋。然而，由于聚酯树脂具有相当大的凝固收缩，在结构构件中引起内应力。制作了钢筋树脂混凝土受弯构件，观察了在不同时间内制动应力的产生情况。还测量了与时间相关的物理和机械性能。制动应力的影响在早期可根据树脂混凝土的性能来计算，但在较高温度下，随着时间的推移，制动应力可能会降低。

项目成果

小柳洽,林富士男,他: "レジンコンクリートの変形特性への熱影響(予定)" コンクリート工学年次論文報告集. 17. (1995)

Takashi Koyanagi、Fujio Hayashi 等：“热力对树脂混凝土变形特性的影响（计划）”混凝土工程年度报告 17。（1995 年）

Wataru KOYANAGI et al.: "Stresses due to Setting Shrinkage in Polyester Resin Concrete" Proc.of The Japan Concrete Institute. 16-1. 663-668 (1994)

Wataru KOYANAGI 等人：“聚酯树脂混凝土凝固收缩引起的应力”，日本混凝土协会论文集。

小柳・内田・林 他1名: "ポリエステルRECの硬化収縮と拘束応力" コンクリート工学年次論文報告集. 16 (予定). (1994)

Koyanagi、Uchida、Hayashi 等 1：“聚酯 REC 的固化收缩和围压应力”，混凝土工程年度报告 16（计划）。

Wataru KOYANAGI et al.: "Heat Effect on Distortion Property of Resin Concrete" Proc.of The Japan Concrete Institute. 17. (1995)

Wataru KOYANAGI 等人：“热效应对树脂混凝土变形性能的影响”，日本混凝土协会论文集。

Wataru KOYANAGI et al.: "Internal Stress due to Setting Shrinkage in Polyester Resin Concrete" Proc.Conf.on Polymers in Concrete. (1995)

Wataru KOYANAGI 等人：“聚酯树脂混凝土凝固收缩引起的内应力”Proc.Conf.on 混凝土中的聚合物。