EFFECT OF CONCRETE COVER ON PRESTRESSED MEMBERS ON CRACK WIDTHS NEAR THE MEMBERS WHEN THERE IS PARTIAL PRESTRESSING
| 项目名称： | EFFECT OF CONCRETE COVER ON PRESTRESSED MEMBERS ON CRACK WIDTHS NEAR THE MEMBERS WHEN THERE IS PARTIAL PRESTRESSING |
| 摘要： | THE OBJECT IS TO DRAW UP DESIGN FORMULAE FOR CALCULATING CRACK WIDTHS IN PARTIALLY PRESTRESSED STRUCTURAL ELEMENTS AND TO FORMULATE A CHECK FOR RETAINING DEFINED CRACK WIDTHS. 5 PARTIALLY PRESTRESSED BEAMS (B TIMES D = 20 TIMES 50 CM) ARE BEING STUDIED. UNDER WORKING LOAD THE CRACKS ARE INJECTED WITH SYNTHETIC RESIN. THE BEAMS ARE CUT UP AFTER THE RESIN HAS HARDENED AND THE CRACK WIDTH MEASURED INSIDE THE WHOLE BENDING TENSILE AREA. THE CONCRETE COVER AND THE POSITION OF THE SLACK REINFORCEMENT ARE BEING VARIED. |
| 状态： | Active |
| 资助组织： | INNENMINISTER DES LANDES NORDRHEIN-WESTFALEN (MINISTER OF THE INTERIOR OF NORTHRHINE-WESTFALIA) |
| 项目负责人： | KUPFER, H |
| 执行机构： | TECHNISCHE UNIV. MUENCHEN, LEHRSTUHL FUER MASSIVBAU (TECHNICAL UNIVERSITY OF MUENCHEN, CHAIR FOR MASSIVE CONSTRUCTION) |
| 开始时间： | 19780628 |
| 预计完成日期： | 19791200 |
| 主题领域： | Design；I24: Design of Bridges and Retaining Walls |
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