MODEL TESTS TO DETERMINE THE EFFECTS OF CRACKS IN THE ROADBASE ON THE BEARING CAPACITY OF CONCRETE SURFACINGS
| 项目名称： | MODEL TESTS TO DETERMINE THE EFFECTS OF CRACKS IN THE ROADBASE ON THE BEARING CAPACITY OF CONCRETE SURFACINGS |
| 摘要： | MEASUREMENTS ON SECTIONS OF ROAD IN OPERATION AND ASSOCIATED LABORATORY TESTS WERE UNDERTAKEN TO DETERMINE THE COOPERATIVE ACTION OF CEMENT-STABILISED ROADBASES. RESULTS OF THE EXPERIMENTAL RESEARCH SHOW THAT THE PROVISION OF SUFFICIENTLY THICK, CEMENT-STABILISED ROADBASES REDUCES SETTLEMENT UNDER THE ACTION OF TRAFFIC LOADS, BECAUSE OF BETTER LOAD DISTRIBUTION. A THEORY WAS DEVELOPED FOR THE QUANTITATIVE DETERMINATION OF THE COOPERATIVE ACTION OF CONCRETE SURFACINGS, AND THIS HAS BEEN EXTENDED TO THE CONSIDERATION OF CRACKS IN THE CEMENT-STABILISED ROADBASE. TO CHECK THE CORRECTION FACTOR ADDITIONAL MODEL TESTS ARE REQUIRED, WHICH FACILITATE ACCURATE MEASUREMENT OF THE STRESSES AND THEIR COURSE. IT IS INTENDED TO CARRY OUT TESTS ON VARIOUS THREE LAYER SYSTEMS. STRAINS ARE BEING MEASURED BY MEANS OF STRAIN GAUGES. PROVISION OF SLOTS IN THE INDIVIDUAL LAYERS OF THE MODEL FACILITATES DETERMINATION OF THE COURSE OF STRESS AND MAKES COMPARISON WITH THE THEORY POSSIBLE. |
| 状态： | Active |
| 资助组织： | BUNDESMINISTER FUER VERKEHR (FEDERAL MINISTER OF TRANSPORT) |
| 项目负责人： | EISENMANN, J |
| 执行机构： | TECHNISCHE UNIVERSITAET MUENCHEN, LEHRSTUHL UND PRUEFAMT FUER DEN BAU VON LANDVERKEHRSWEGEN (TECHNICAL UNIVERSITY OF MUENCHEN, INSTITUTE FOR CONSTRUCTION OF LAND TRANSPORT ROUTES |
| 开始时间： | 19780500 |
| 预计完成日期： | 19800500 |
| 主题领域： | Research；I22: Design of Pavements, Railways and Guideways；I32: Concrete；I33: Other Materials used in Pavement Layers |
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- EXPERIMENTAL STUDY OF THE BEARING CAPACITY OF HYDRAULICALLY BOUND SANDS UNDER CONCRETE SURFACES
- EFFECT OF BITUMINOUS SPRAYING OF HYDRAULICALLY BOUND GRAVEL ROADBASES UNDER CONCRETE SURFACINGS ON BOND
- MEASUREMENTS ON CONCRETE PAVEMENTS HAVING HEAT-INSULATING AND STABILISED HYDRAULICALLY BOUND BASES
- LONG TERM BEHAVIOUR AND DESIGN OF CEMENT STABILISED BASES
- EXPERIMENTAL STUDY OF THE RELATION BETWEEN THE STRENGTH PROPERTIES OF AGGREGATES AND ROAD CONCRETE
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