Effectiveness of Lime in Hot-Mix Asphalt Pavements

2003 ◽  
Vol 1832 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Peter E. Sebaaly ◽  
Edgard Hitti ◽  
Dean Weitzel
Keyword(s):  
Hot Mix Asphalt ◽  
Moisture Damage ◽  
Performance Data ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Department Of Transportation ◽  
Lime Treatment ◽  
Field Samples ◽  
Maintenance And Rehabilitation ◽  
The Impact

The pavement community has recognized that moisture damage of hot-mix asphalt (HMA) has been a serious problem since the early 1960s. Numerous additives have been evaluated with the objective of reducing the potential of moisture damage in HMA mixtures; lime has been one of the most common ones. The Nevada Department of Transportation has been using lime in HMA mixtures since the mid-1980s. The objective of this research was to quantify the improvements in pavement performance that have been realized through the addition of lime to HMA mixtures. The program evaluated field samples and pavement performance data from untreated and lime-treated pavements. The properties of untreated and lime-treated mixtures from field projects in the southern and northwestern parts of Nevada indicate that lime treatment of Nevada's aggregates significantly improves the moisture resistance of HMA mixtures. The study showed that lime-treated HMA mixtures become significantly more resistant to multiple freeze–thaw cycles than do the untreated mixtures. Long-term pavement performance data indicate that under similar environmental and traffic conditions, the lime-treated mixtures provide better-performing pavements with fewer requirements for maintenance and rehabilitation activities. The analysis of the impact of lime on pavement life indicates that lime treatment extends the performance life of HMA pavements by an average of 3 years. This extension represents an average increase of 38% in the expected pavement life.

Performance Analysis of Ultrathin Whitetopping Intersections on US-169: Elk River, Minnesota

2003 ◽  
Vol 1823 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Julie M. Vandenbossche
Keyword(s):  
Test Section ◽  
Hot Mix Asphalt ◽  
Asphalt Pavements ◽  
Department Of Transportation ◽  
Uniform Thickness ◽  
Research Facility ◽  
Transverse Cracks ◽  
Elk River ◽  
Joint Pattern

The Minnesota Department of Transportation constructed an ultrathin whitetopping (UTW) project at three consecutive intersections on US-169 at Elk River, Minnesota, to gain more experience with both the design and the performance of UTW. Distinct cracking patterns developed within each test section. The UTW test sections with a 1.2- ×1.2-m (4- ×4-ft) joint pattern included corner breaks and transverse cracks. Corner breaks were the primary distress in the test section with a 1.8- ×1.8-m (6- ×6-ft) joint pattern, although very little cracking was exhibited. The Minnesota Road Research Facility UTW test sections on I-94 allow comparisons of the same UTW design on hot-mix asphalt (HMA) pavements with different structural capacities to be made. The strain and deflection measurements emphasize the importance of the support provided by the HMA layer. A reduction in this support occurs when the temperature of the HMA is increased or when the HMA begins to ravel. During evaluations of whether UTW is a viable rehabilitation alternative, cores should be pulled from the pavement to determine if the asphalt is stripping and if the asphalt layer has adequate thickness. UTW can be successfully placed on as little as 76 mm (3 in.) of asphalt, if the quality of the asphalt is good. The cores should also reveal whether the asphalt layer is of uniform thickness and whether stripping and raveling have occurred. If the asphalt layer is of uniform thickness and stripping and raveling have not occurred, UTW is a good option for use in the rehabilitation of asphalt pavements.

scholarly journals Use of LTPP Data to Quantify Moisture Damage under Crack Sealing and Surface Treatments in Asphalt Pavements

2019 ◽  
Vol 271 ◽  
pp. 08005
Author(s):  
Momen R. Mousa ◽  
Mostafa A. Elseifa ◽  
Mohammed Z. Bashar
Keyword(s):  
United States ◽  
Ground Water ◽  
Asphalt Concrete ◽  
Moisture Damage ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Southern United States ◽  
Crack Sealing ◽  
Chip Seal

Crack sealing and seal coats are used to prevent the ingress of water into the pavement, thus delaying its deterioration. Yet, earlier studies indicated that sealing pavements in areas with high ground water table (GWT) prevented moisture from escaping upwards through the cracks of asphalt pavements, therefore, accelerating stripping. The objectives of this study were to determine whether these treatments contribute to stripping in Asphalt Concrete (AC) and/or moisture accumulation in the base and to evaluate the effect of GWT, rain, and traffic on subsurface failures under these treatments. In this study, nine test sections included in the Long-Term Pavement Performance (LTPP) program and several field chip seal projects in Louisiana were analyzed. Results indicated that these treatments do not contribute to stripping. However, the cause of common stripping under these treatments in the Southern United States is moisture entrapment under the AC layer under shallow GWT conditions, which is also the key contributor to stripping under unsealed sections.

Laboratory Study on the Effect of Nano TiO2 on Rutting Performance of Asphalt Pavements

2012 ◽  
Vol 622-623 ◽  
pp. 990-994 ◽  
Author(s):  
Javad Tanzadeh ◽  
Fariborz Vahedi ◽  
Pezhouhan T. Kheiry ◽  
Rashid Tanzadeh
Keyword(s):  
Dynamic Loading ◽  
Laboratory Study ◽  
Hot Mix Asphalt ◽  
Asphalt Pavement ◽  
Asphalt Binder ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Laboratory Research ◽  
Wheel Tracking Test ◽  
Wheel Tracking

Modification of the asphalt binder is one approach taken to improve Asphalt pavement performance. Rutting is one of the most important factors that could reduce the life of asphalt pavements.Nowadays, the application of nanotechnologyto achieve materials that are more resistant is expanding in asphalt pavement thatNano-TiO2is among the most exciting and promising classes of materials discovered recently. The purpose of this study is laboratory research on the effect of Nano-TiO2in improving Bitumen property and rutting resistance in Asphalt pavement under dynamic loading. For this purpose, the wheel-tracking test was carried outon ordinary and Nano-TiO2modified hot mix asphalt samples.The results illustrate that using Nano-TiO2in asphaltbinder samples cause to an improvement in ruttingdepth in comparison with theordinarymixtures.

Expected Service Life of Hot-Mix Asphalt Pavements in Long-Term Pavement Performance Program

2007 ◽  
Vol 1990 (1) ◽  
pp. 102-110
Author(s):  
Harold L. Von Quintus ◽  
Jagannath Mallela ◽  
Jane Jiang ◽  
Mark Buncher
Keyword(s):  
Service Life ◽  
Hot Mix Asphalt ◽  
Asphalt Pavements ◽  
Pavement Performance

Study on Pavement Performance of Warm Mix Asphalt with DAT

2014 ◽  
Vol 709 ◽  
pp. 354-357
Author(s):  
Kun Wang ◽  
Xiang Qu
Keyword(s):  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Warm Mix Asphalt ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Molding Temperature ◽  
The Road ◽  
The Difference ◽  
The Impact

To study the difference of pavement performance between DAT warm-mix asphalt and hot-mix asphalt, the impact on the SBS asphalt with 10% DAT was studied first. Then AC-5 asphalt mixture was made the Marshall specimens according to the indoor mixing and molding temperature. Analyze the road performance between warm mix asphalt and hot mix asphalt. The experiment results show that the SBS asphalt with DAT has small difference to the original. The DAT warm-mix asphalt has poor water stability and low-temperature stability but good high-temperature stability than the hot mix asphalt when the indoor mixing and molding temperature has 20°C reduction. So DAT warm-mix asphalt can achieve the purpose of energy saving.

scholarly journals Evaluation of the Impact of Asphalt Mix Segregation on Pavement Performance

2019 ◽  
Vol 2673 (1) ◽  
pp. 310-316 ◽  
Author(s):  
Ohhoon Kwon ◽  
Bouzid Choubane ◽  
David Hernando ◽  
Wayne Allick
Keyword(s):  
Laboratory Tests ◽  
Pavement Performance ◽  
Department Of Transportation ◽  
Accelerated Pavement Testing ◽  
Aggregate Gradation ◽  
Florida Department ◽  
Asphalt Mix ◽  
Pavement Testing ◽  
Scale Experiment ◽  
The Impact

A full-scale experiment was conducted at the Florida Department of Transportation (FDOT)’s accelerated pavement testing (APT) facility to evaluate the impact of segregation on hot mix asphalt (HMA) pavement performance. Localized areas of segregation were artificially generated during the construction of the APT test tracks, using improper paving techniques without any manipulation of the aggregate gradation. The subsequent APT results showed that, under similarly controlled conditions, the segregated locations exhibited significantly higher rutting than the non-segregated areas. Furthermore, supplementary field and laboratory tests indicated that the segregated locations had, in comparison, greater cracking, raveling, and tire-pavement interaction noise potentials.

Analysis of Overweight Truck Permit Policy in New Jersey

2021 ◽  
pp. 036119812110266
Author(s):  
Sami Demiroluk ◽  
Hani Nassif ◽  
Kaan Ozbay ◽  
Chaekuk Na
Keyword(s):  
New Jersey ◽  
Environmental Conditions ◽  
Decision Makers ◽  
Actual Cost ◽  
Department Of Transportation ◽  
Heavy Weight ◽  
Vehicle Route ◽  
Heavy Trucks ◽  
Maintenance And Rehabilitation ◽  
The Cost

The roadway infrastructure constantly deteriorates because of environmental conditions, but other factors such as exposure to heavy trucks exacerbates the rate of deterioration. Therefore, decision-makers are constantly searching for ways to optimize allocation of the limited funds for repair, maintenance, and rehabilitation of New Jersey’s infrastructure. New Jersey legislation requires operators of overweight (OW) trucks to obtain a permit to use the infrastructure. The New Jersey Department of Transportation (NJDOT) issues a variety of permits based on the types of goods carried. These permits allow OW trucks to use the infrastructure either for a single trip or for multiple trips. Therefore, one major concern is whether the permit revenue of the agency can recoup the actual cost of damage to the infrastructure caused by these OW trucks. This study investigates whether NJDOT’s current permit fee program can collect enough revenue to meet the actual cost of damage to the infrastructure caused by these heavy-weight permit trucks. The infrastructure damage is estimated by using pavement and bridge deterioration models and New Jersey permit data from 2013 to 2018 containing vehicle configuration and vehicle route. The analysis indicates that although the cost of infrastructure damage can be recovered for certain permit types, there is room for improvement in the permit program. Moreover, based on permit rules in other states, the overall rank of the New Jersey permit program is evaluated and possible revisions are recommended for future permit policies.

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