Effects of Spot Diamond Grinding on Performance of Portland Cement Concrete Pavements

1998 ◽  
Vol 1629 (1) ◽  
pp. 197-207
Author(s):  
Thomas H. Wenzel ◽  
Fariborz Vazir Abadi ◽  
Stephen F. Shober ◽  
Robert Schmiedlin
Keyword(s):  
Material Properties ◽  
Field Survey ◽  
Concrete Pavements ◽  
Department Of Transportation ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Pavement Distress ◽  
Diamond Grinding ◽  
Wisconsin Department ◽  
And Control

A study was initiated by the Wisconsin Department of Transportation to investigate the effects of spot diamond grinding on the performance and material properties of concrete pavement. A field survey was conducted to assess the conditions of selected spot-diamond-ground PCC pavement sites. Pavement distress data were collected on control and spot-ground sections on 22 highways and 34 locations in Wisconsin. In addition, microsurveys were completed for each of the spot-ground sections. Utilizing the pavement distress index, values and results of the microsurvey comparisons are made between sections that were spot-ground and those that were not. Conclusions are drawn concerning the effects of spot grinding on the performance of the concrete pavements; no practical differences were found between the spot-ground and control sections.

Design of a Randomized Tining Rake for Portland Cement Concrete Pavements Using Spectral Analysis

2000 ◽  
Vol 1702 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Ziad S. Saad ◽  
John R. Jaeckel ◽  
Yosef Z. Becker ◽  
David A. Kuemmel ◽  
Alex Satanovsky ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Portland Cement ◽  
Acoustic Noise ◽  
The United States ◽  
Design Stage ◽  
Random Pattern ◽  
Concrete Pavements ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Wisconsin Department

Uniformly spaced, transverse-tined portland cement concrete (PCC) pavements have been in extensive use in the United States since the early 1970s. However, driving on tined pavements generates an uncomfortable acoustic “whine”that has a discrete frequency. Recent research by the Wisconsin Department of Transportation (WisDOT) and FHWA led to an interim guideline for randomization of the tining pattern. The guideline called for tine spacing varying from 10 to 40 mm, with 50 percent of the spacing below 25 mm. At least five states have experimented with this random pattern, with limited success in eliminating the whine. A study was completed recently as part of a WisDOT contract with Marquette University and the HNTB Corporation, and funded by FHWA, to analyze all of the pavements. The tonal properties of acoustical noise were related to the serial arrangement of the tining, showing that the frequencies can be predicted from the power spectrum of the series of tines. A method of designing the series of tines that minimizes and possibly eliminates the presence of these whines is proposed and explained. By predicting the tonal properties of acoustical noise at the rake-design stage, the construction effort in building and researching noise and texture characteristics is substantially reduced. A random rake, designed using the proposed methodology, has been used in tining a road section, and preliminary spectral analysis of the acoustic noise revealed no tining-related discrete tones.

Measuring As-Constructed Smoothness of Portland Cement Concrete Pavements with Lightweight Profilometers

2001 ◽  
Vol 1764 (1) ◽  
pp. 189-200
Author(s):  
Mahmuda Akhter ◽  
Mustaque Hossain ◽  
Jeffrey Hancock ◽  
John Boyer ◽  
William J. Parcells
Keyword(s):  
Portland Cement ◽  
Concrete Pavements ◽  
Portland Cement Concrete ◽  
Cement Concrete

Noise Issues of Concrete-Pavement Texturing

2000 ◽  
Vol 1702 (1) ◽  
pp. 69-79 ◽  
Author(s):  
John R. Jaeckel ◽  
David A. Kuemmel ◽  
Yosef Z. Becker ◽  
Alex Satanovsky ◽  
Ronald C. Sonntag
Keyword(s):  
Second Phase ◽  
Department Of Transportation ◽  
Portland Cement Concrete ◽  
Noise Levels ◽  
The Road ◽  
Wisconsin Department ◽  
Noise Characteristics ◽  
Texture Parameters ◽  
Noise Measurements ◽  
Using Data

The second phase of a project researching the texture and noise characteristics of portland cement concrete (PCC) pavements was sponsored by the Wisconsin Department of Transportation and FHWA. The team of Marquette University and HNTB Corporation measured and analyzed the noise and texture parameters of 57 test sites in Colorado, Iowa, Michigan, Minnesota, North Dakota, and Wisconsin. Conclusions pertaining to tire-and-pavement noise were drawn using data from several types of acoustical tests, including objective noise measurements (exterior and interior), subjective noise evaluations, and a prominent frequency analysis. Texture parameters of all test sites were measured with the road surface analyzer (ROSAN). ROSAN texture measurements proved invaluable in analyzing why different textures exhibited different noise characteristics. Both uniform and random transverse tining provide higher interior and exterior noise levels than skewed or longitudinal tining. Transverse tining, even in some random-spaced textures, can cause a discrete frequency or whine. As the depth and width of tining increased, so did the noise levels. Randomly spaced patterns are sensitive to spacing. Ground PCC pavement exhibited no discrete frequencies. Recommendations include the need for better quality control over tining and a wet-pavement-accident study of longitudinal tining. If noise considerations are paramount, longitudinal tining is recommended. If texture is paramount, skewed tining is recommended. If a skew is not possible, then carefully constructed random transverse is recommended.

Vibration Study for Consolidation of Portland Cement Concrete

1997 ◽  
Vol 1574 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Shane Tymkowicz ◽  
Robert F. Steffes
Keyword(s):  
Portland Cement ◽  
The State ◽  
Department Of Transportation ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Research Project ◽  
Air Content ◽  
Radius Of Influence ◽  
Normal Speed

The Iowa Department of Transportation has discovered an increase in the occurrence of excessively vibrated portland cement concrete (PCC) pavements. The overconsolidation of PCC pavements has been observed in several projects across the state. Overconsolidation is also believed to be a factor in acceleration of premature deterioration of at least two pavement projects in Iowa. To address the problem, a research project in 1995 documented the vibratory practices of PCC slipform paving in Iowa in order to determine the effect of vibration on consolidation and air content of pavement. Paver speed, vibrator frequency, and air content relative to the location of the vibrator were studied. The study concluded that the Iowa Department of Transportation specification of 5,000 to 8,000 vibrations per minute (vpm) for slipform pavers is effective for normal paver speeds on the three projects that were examined. Excessive vibration was clearly identified on one project where a vibrator frequency of 12,000 vpm was discovered. When the paver speed was reduced to half the normal speed, hard air contents indicate that excessive vibration was beginning to occur in the localized area immediately surrounding the vibrator at a frequency of 8,000 vpm. The study also indicates that the radius of influence of the vibrators is smaller than has been claimed.

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