原文传递
CRACK RESISTANCE OF JOINTED PLAIN CONCRETE PAVEMENTS.
| 题名： | CRACK RESISTANCE OF JOINTED PLAIN CONCRETE PAVEMENTS. |
| 作者： | Jensen-EA; Hansen-W |
| 关键词： | Coarse-aggregates; Concrete-pavements; Crack-width; Fracture-mechanics; Jointed-plain-concrete-pavements; Laboratory-tests; Mathematical-analysis; Pavement-cracking; Slabs-; Tensile-strength; Thickness- |
| 摘要： | The crack sensitivity of jointed plain concrete pavement is investigated experimentally in the laboratory for a limited number (seven) of large-scale slabs and numerically as well using nonlinear fracture mechanics. The basis for modeling is the concrete crack-width relation and the elastic modulus. The stress-crack width relations for the concrete were obtained on the concretes tested in the laboratory. The slab dimensions in the experimental and numerical analysis were 1.8 m wide and 3.0 m long, and a full-depth cross section (250 mm) containing a full-width surface crack extending 20% to 25% of the slab thickness was used. The major findings are that the numerical analysis verifies that the results from laboratory testing resemble field fracture behavior. Further, irrespective of the aggregates used, a concrete pavement is highly crack sensitive, although the coarse aggregate can affect the sensitivity by approximately 30%. The experimental and numerical results showed that a crack-to-slab-thickness ratio of 20% to 25% reduced the in-plane tensile capacity of the cracked section by 60% to 75% depending on the concrete used. |
| 总页数： | Transportation Research Record. 2002. (1809) pp60-65 (7 Fig., 2 Tab., 10 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- Concrete Pavement Design Details and Construction Practices— State of the Art Technical Digest
- Concrete Pavement Design Details and Construction Practices: State of the Art Technical Digest
- PAVEMENT CONDITION RATING SYSTEM REVIEW OF PCR METHODOLOGY
- TRANSVERSE CRACKING DISTRESS IN LONG-TERM PAVEMENT PERFORMANCE JOINTED CONCRETE PAVEMENT SECTIONS.
- Analysis of Concrete Pavement Responses to Temperature and Wheel Loads Measured from Instrumented Slabs
- Evaluation of the Fatigue and Toughness of Fiber Reinforced Concrete for use as a New Highway Pavement Design.
检索历史
应用推荐
