MATERIAL STUDIES ON PRESTRESSED CONCRETE STRUCTURES TO BE DEMOLISHED TO DETERMINE THE LONG TERM BEHAVIOUR OF PRESTRESSING STEELS
| 项目名称： | MATERIAL STUDIES ON PRESTRESSED CONCRETE STRUCTURES TO BE DEMOLISHED TO DETERMINE THE LONG TERM BEHAVIOUR OF PRESTRESSING STEELS |
| 摘要： | IT IS PLANNED TO COLLECT INFORMATION ON THE LONG TERM BEHAVIOUR OF PRESTRESSING STEELS BY MEANS OF TESTS ON SAMPLES TAKEN FROM THREE BRIDGES DUE FOR DEMOLITION AND BY MEASUREMENTS ON THE STRUCTURES THEMSELVES. AS WELL AS STUDIES OF THE ACTUAL STEEL (RESIDUAL STRESS, SIGMA-EPSILON-DIAGRAM, FATIGUE STRENGTH, CORROSION, POSSIBLE FAILURES AND THEIR CAUSE), IT IS PLANNED TO STUDY THE SURROUNDINGS OF THE STEEL (INJECTION MORTAR, SLEEVE, CONCRETE). THE DATA OBTAINED ARE TO BE SYSTEMATICALLY EVALUATED. THE APPROPRIATE ROAD AND BRIDGE AUTHORITIES IN THE INDIVIDUAL FEDERAL GERMAN STATES ARE TO BE ASKED FOR DETAILS OF PRESTRESSED CONCRETE STRUCTURES WHICH ARE TO BE DEMOLISHED. STRUCTURES SELECTED FOR EXAMINATION WILL BE THE ONES LIKELY TO PROVIDE THE MOST USEFUL RESULTS AND WILL BE AS OLD AS POSSIBLE. |
| 状态： | Active |
| 资助组织： | INSTITUT FUER BAUTECHNIK |
| 项目负责人： | Rostasy, F S |
| 执行机构： | TECHNISCHE UNIV. BRAUNSCHWEIG, INST. FUER BAUSTOFFKUNDE UND STAHLBETONBAU (BRUNSWICK TECHNICAL UNIVERSITY, INSTITUTE FOR CONSTRUCTION MATERIALS AND REINFORCED CONCRETE) |
| 开始时间： | 19770307 |
| 预计完成日期： | 19791231 |
| 主题领域： | Bridges and other structures；I24: Design of Bridges and Retaining Walls；I53: Construction of Bridges and Retaining Walls |
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- EXECUTION OF LARGE-SCALE TESTS TO DETERMINE MATERIAL CHARACTERISTICS DURING THE DISMANTLING OF A PRESTRESSED CONCRETE BRIDGE (MOTORWAY NEAR VIENNA)
- EXECUTION OF LARGE-SCALE TESTS TO DETERMINE MATERIAL CHARACTERISTICS DURING THE DISMANTLING OF A PRESTRESSED CONCRETE BRIDGE (MOTORWAY NEAR VIENNA)
- EVALUATION OF EXISTING AND FUTURE REPORTS ON THE DEMOLITION OF PRESTRESSED CONCRETE STRUCTURES WITH REFERENCE TO THE LONG TERM BEHAVIOUR OF PRESTRESSING STEELS
- BASIC TESTS FOR ENSURING THE COMPLETE FILLING OF THE SLIDING SLEEVES OF PRESTRESSED CONCRETE MEMBERS WITH INJECTION MORTAR
- WORKING OUT OF A TEST SPECIFICATION FOR CONCRETE ADMIXTURES WITH RESPECT TO THE PROMOTION OF HYDROGEN EMBRITTLEMENT OF PRESTRESSING STEEL IN CONCRETE
- STRESS CORROSION OF PRESTRESSING STEELS; APPLICATION OF THE RESULTS OF SHORT TERM TESTS TO BEHAVIOUR UNDER PRACTICAL CONDITIONS
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