Effective Use of Demolition Waste Concrete Stored in Temporary Stock Yard for Construction Waste Materials

建筑垃圾临时堆场拆除废混凝土的有效利用

• 批准号: 12650465
• 负责人: YAMURA Kiyoshi
• 金额: $ 1.92万
• 依托单位: Setsunan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650465/
• 关键词: Demolition Waste Concrete; Recycled Aggregate; strength; Durability; Drying Shurinkage; High Water Absorption Mud; Reinfored Concrete; 乾煉収縮; 路盤材

In this study, to develope the recycle system for construction waste materials, recycled use system of demolition waste concrete stored in temporary stock yars for construction waste materials were considered. The properties and their variations of recycled aggregates (both fine and coarse) made from these waste materials were investigated. At the same time, the properties of concrete and concrete structures(reinforced concrete beams) containing these recycled aggregates were studied. Main results obtained are as follows.(1) Compressive strength of recycled concrete is lower 10% than that of normal concrete for the same water cement ratio. As for Youn's modulus, the reduction for recycled concrete is larger than the case of strength, and are affected strongly by the amount of origin mortar containing recycled aggregate.(2) Capacity of plastic deformation of recyled concrete is inferior to that of normal concrete, resulting deterioration of crack moment and ultimate shear strength of the reinforced concrete beams.

本研究以建筑废料回收系统之开发为目的，探讨建筑废料临时储存场之拆除废弃混凝土回收利用系统。研究了由这些废弃物制成的再生骨料（包括细骨料和粗骨料）的性能及其变化。同时，研究了含有这些再生骨料的混凝土和混凝土结构（钢筋混凝土梁）的性能。主要结果如下。(1)在相同水灰比条件下，再生混凝土的抗压强度比普通混凝土低10%左右。对于弹性模量，再生混凝土的弹性模量比强度的弹性模量降低更大，且弹性模量的降低受再生骨料掺量的影响更大。(2)由于波纹混凝土的塑性变形能力不如普通混凝土，导致钢筋混凝土梁的开裂弯矩和极限抗剪强度劣化。

项目成果

矢村潔, 坂田一隆, 愛甲秀行: "コンクリート用再生骨材の実用化に関する基礎的研究"コンクリート工学年次論文集. Vol23 No1. 259-264 (2001)

Kiyoshi Yamura、Kazutaka Sakata、Hideyuki Aiko：“混凝土再生骨料实际应用的基础研究”混凝土工程学会年报第 23 卷第 259-264 期（2001 年）。

Kiyoshi Yamura et al.: ""Study on the Plactical Use of Recycled Aggregate for Concrete""Proceedings of the Japan Concrete Institute. Vol. 23 No. 1. 259-265 (2001)

Kiyoshi Yamura 等人：“再生骨料在混凝土中的应用研究”，日本混凝土学会会议录。

矢村 潔, 坂田一隆, 愛甲秀行: "コンクリート用再生骨材の実用化に関する基礎的研究"コンクリート工学年次論文集. Vol.23, No.1. 259-264 (2001)

Kiyoshi Yamura、Kazutaka Sakata、Hideyuki Aiko：“混凝土再生骨料实际应用的基础研究”混凝土工程学会年报第 23 卷，第 259-264 期（2001 年）。