THE PROPERTIES OF PLASTIC CONCRETE FOR ROAD CONSTRUCTION
| 项目名称： | THE PROPERTIES OF PLASTIC CONCRETE FOR ROAD CONSTRUCTION |
| 摘要： | LABORATORY TESTS ARE TO BE CARRIED OUT TO STUDY THE OPTIMUM COMPOSITION OF NORMAL-HARDENING AND EARLY HIGH-STRENGTH PLASTIC CONCRETE. THREE DIFFERENT PLASTICIZERS AND TWO CEMENTS ARE TO BE STUDIED. THE EFFECTIVENESS OF THE PLASTICIZERS MUST BE ASSURED IN ASSOCIATION WITH THE AIR ENTRAINING AGENTS NEEDED TO INCREASE RESISTANCE TO FROST AND DEICING SALTS. THE FOLLOWING PROPERTIES OF FRESH AND HARDENED CONCRETES ARE BEING COMPARED WITH THOSE OF THE INITIAL CONCRETES: SPREADING RATE AND WORKABILITY TIME; INCLINATION OF THE CONCRETE SURFACE TO THE BOUNDARY WHEN THERE IS A SKEW BASE; SEDIMENTATION ESTABLISHED BY VISUAL INSPECTION, COMPRESSION AND BENDING TENSILE STRENGTHS; MODULUS OF ELASTICITY, PERMEABILITY AND VOID SIZES AND DISTRIBUTION. IT IS ALSO INTENDED TO DETERMINE THE CREEP AND SHRINKAGE OF HIGH-STRENGTH NORMAL AND PLASTIC CONCRETES WITH A HIGH CEMENT CONTENT. |
| 状态： | Completed |
| 资助组织： | BUNDESMINISTER FUER VERKEHR |
| 项目负责人： | Ranisch, E H；Rostasy, F S；Kordina, K |
| 执行机构： | TECHN. UNIV. BRAUNSCHWEIG, INST. F. BAUSTOFFKUNDE UND STAHLBETONBAU (TECHNICAL UNIVERSITY OF BRUNSWICK, INSTITUTE FOR CONSTRUCTION MATERIALS AND REINFORCED CONCRETE) |
| 开始时间： | 19770900 |
| 实际结束时间： | 19791000 |
| 主题领域： | Research；I32: Concrete |
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