原文传递
VIBRATION STUDY FOR CONSOLIDATION OF PORTLAND CEMENT CONCRETE.
| 题名： | VIBRATION STUDY FOR CONSOLIDATION OF PORTLAND CEMENT CONCRETE. |
| 作者： | Tymkowicz-S; Steffes-RF |
| 关键词： | VIBRATIONS-; PORTLAND-CEMENT-CONCRETE; OVERCONSOLIDATION-; CONCRETE-PAVEMENTS; IOWA-; PAVER-; VIBRATORY-COMPACTING-EQUIPMENT |
| 摘要： | The Iowa Department of Transportation has noticed an increase in the occurrence of excessively vibrated Portland Cement Concrete (PCC) pavements. The over consolidation of pavements has been noted visually in the finished pavements of several projects across the state of Iowa. It is also believed to be a factor in accelerating the premature deterioration of at least two pavements in Iowa. To address the problem of excessive vibration a research project was initiated to document the vibratory practices of PCC slip form paving and determine the effect of vibration on the air content of the pavement. The primary factors studied were paver speed, vibrator frequency, and air content relative to the location of the vibrator. The study concluded that the Iowa DOT specification of 5000 to 8000 vibrations per minute (vpm) for slip form pavers is effective for normal paver speeds observed on the three test paving projects. |
| 总页数： | Proceedings. Location: Ames, Iowa. Sponsored by: Iowa State Conference Title: 1996 Semisesquicentennial Transportation Conference University, Iowa Department of Transportation. Held: 19960513-19960514. 1996. pp144-146 (3 Figs., 2 Refs.) |
| 报告类型： | 科技报告 |
相关文献
- CAL/APT Goal LLPRS-Rigid Phase HI: Concrete Test Section 516CT Report
- MAGNESIUM OXYCHLORIDE CEMENT CONCRETE WITH RECYCLED TIRE RUBBER.
- NEW FIELD SYSTEM FOR MEASURING DEGREE OF CONSOLIDATION OF CONCRETE DURING VIBRATION.
- Deleterious Chemical Effects of Concentrated Deicing Solutions on Portland Cement Concrete. Implementation Guide. Final rept. for Sep 02-Apr 08.
- Sustainable Concretes for Transportation Infrastructure.
- Concrete Materials 2015. Transportation Research Record: Journal of the Transportation Research Board, No. 2508.
检索历史
应用推荐
