Crack Sealing and Filling: Best Practices

Lee, Jusang; Hastak, Makarand; Ahn, Hyung Jun

doi:10.5703/1288284316008

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…For the PCR- or IRI-based method, Rajagopal measured the average PCR gains over 5 years and revealed a 3.6%–5.8% increase in the average PCR across different types of pavements ( 13 ). Lee et al used IRI to evaluate the crack sealing performances and reported that, in the crack-sealed pavements, the average IRI showed a decrease of 1.13 in./mi compared with the untreated ones ( 34 ). Lu and Tolliver reported that crack sealing has short-term effects on pavement performance, which are reflected by an IRI as low as 28 in./mi, according to the Long-Term Pavement Performance (LTPP) data ( 35 ).…”

Section: Literature Reviewmentioning

confidence: 99%

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Quantitative Assessments of Crack Sealing Benefits by 3D Laser Technology

Yang

Zhang

Tsai

et al. 2021

Transportation Research Record: Journal of the Transportation R

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Crack sealing is one of the most commonly used methods to preserve asphalt pavements. However, quantification of crack sealing benefits (or the long-term delaying effects of crack sealing on crack propagation) remains unavailable because field crack lengths could not be measured accurately and efficiently. In this study, 3D laser technology is proposed to measure and compare the growth of crack lengths between sealed and non-sealed pavement sections and, for the first time, to accurately and efficiently quantify the crack sealing benefits. To validate the proposed method and find adequate treatment timing (or conditions), nine field sites in Georgia, U.S., with different pavement pre-treatment conditions and roadway environmental factors were monitored over 3 years from December 2016 to September 2019. The study results showed that crack sealing can retard crack growth by 40%–128%, and such delaying effects are more significant under better pavement pre-treatment conditions. The findings suggest that transportation agencies can prolong the service life of pavements by applying crack sealing before the pavement condition becomes poor. In addition, this work has been proved to be very valuable for transportation agencies to determine the best timing and treatment criteria for crack sealing.

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Section: Literature Reviewmentioning

confidence: 99%

“…In the last method, the delaying effect of crack sealing on crack growth is reflected directly. Lee et al compared the crack growths of sealed and non-sealed pavements over a period after crack sealing ( 34 ). They used pavement surface images to give qualitative proofs of the benefits of crack sealing.…”

Section: Literature Reviewmentioning

confidence: 99%

Quantitative Assessments of Crack Sealing Benefits by 3D Laser Technology

Yang

Zhang

Tsai

et al. 2021

Transportation Research Record: Journal of the Transportation R

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show abstract

“…Preventive maintenance techniques, including crack sealing and seal coats, are commonly used to improve the functional conditions of asphalt pavements. If applied correctly and timely, these treatments may reduce pavement deterioration by minimizing the infiltration of water into the pavement structure; thus, extending pavement service life [1]. Yet, concerns exist that these treatments may be responsible for subsurface failures if the surrounding moisture conditions are not adequately considered.…”

Section: Introductionmentioning

confidence: 99%

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

2019

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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.

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“…Crack sealing is one of the most common preventive maintenance techniques used to control transverse and longitudinal cracks. If applied correctly and in good time, crack sealing may reduce pavement deterioration by minimizing the infiltration of water into the pavement structure, thus extending pavement service life ( 1 ). However, concerns exist that crack sealing may be responsible for moisture damage if the surrounding moisture conditions are not adequately considered.…”

mentioning

confidence: 99%

Evaluation of Moisture Damage under Crack-Sealed Asphalt Pavements in Louisiana

Mousa

Elseifi

Zhang

et al. 2019

Transportation Research Record: Journal of the Transportation R

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Crack sealing prevents the ingress of water in the pavement structure, thus preventing the weakening of the pavement and delaying its deterioration. Earlier studies indicate that sealing pavements in areas with a high ground water table (GWT) may prevent moisture from escaping upwards through cracks in asphalt pavements, therefore, accelerating stripping. The objective of this study was to provide guidelines for using crack sealing to minimize moisture entrapment under cracks, thus reducing stripping on low volume roadways. To achieve this, a calibrated Finite Element (FE) model was used to model a field experiment consisting of cracked and crack-sealed asphalt pavement sections. Sensitivity analysis was then conducted to compare crack-sealed and unsealed sections under different GWT levels, air relative humidity, air temperatures, rain intensities, and asphalt hydraulic conductivities. Results indicate that crack sealing could be applied under common rain intensities in Louisiana and any GWT depth without potential for stripping because of moisture entrapment if the hydraulic conductivity of the original pavement does not exceed 2 × 10–6 m/s. Yet, crack sealing should be applied after a dry period to ensure that the existing moisture in the original pavement is minimal. A non-linear regression model was developed for use in the Southern United States to help determine whether crack sealing should be used to avoid moisture damage in a cracked pavement at a given site based on the GWT and air relative humidity without the need for FE simulations. This can be a useful tool when planning maintenance activities.

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Crack Sealing and Filling: Best Practices

Cited by 3 publications

References 6 publications

Quantitative Assessments of Crack Sealing Benefits by 3D Laser Technology

Quantitative Assessments of Crack Sealing Benefits by 3D Laser Technology

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

Evaluation of Moisture Damage under Crack-Sealed Asphalt Pavements in Louisiana

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