Sponsored

Minnesota County Uses Mastic One® To Successfully Treat Transverse Cracks

April 06, 2021
Mastic One being applied to a transverse crack on County Road 13 in Nicollet County, Minn
Mastic One being applied to a transverse crack on County Road 13 in Nicollet County, Minn.

The Problem

Depressed transverse cracks are a common issue on many roads. When this occurs, drivers experience a ride that is often described as driving over a washboard. Nicollet County has been treating depressed, transverse, and longitudinal cracks by spraying a tack coat, installing a fine hot mix, and then compacting. Normal crew size is approximately 8 to 10 people. It requires multiple trucks, a roller and all-day lane closure traffic control. Their production yield was typically mile per day at full road width. This method is very labor intensive and time consuming. The service life of a hot mix asphalt repair can be less than one year. This process has been used for many years and was determined to have limited application due to high-cost and significant traffic interruption.

The Solution

The County Road Department chose a highway that is used by cars, heavy trucks, and large farming vehicles to try Mastic One for the repair the depressed transverse cracks. Mastic One is specially designed for wide cracks and distressed surface areas, in both AC and PCCP pavements, that are too small for re-paving, but too large for crack sealant. Mastic One is a unique, hot-applied, polymer modified asphalt-based material with engineered aggregate. Mastic One is highly adhesive, flexible, durable and is waterproof with a service life exceeding 5 years.

A close-up view of Mastic One applied to a transverse crack on County Road 13 in Nicollet County, Minn.
A close-up view of Mastic One applied to a transverse crack on County Road 13 in Nicollet County, Minn.

The Project

Mastic One was applied with a shoe box applicator to a single lane at a time, utilizing a mobile operation with only flagmen for traffic control, thus limiting the time needed to divert traffic. The crew size was five, compared to 8-10, and each transverse crack took an average of 45 seconds to repair. Based on the ease and speed to apply Mastic One, a mile-long section of pavement was completed in approximately 2 hours and a single pallet (2,880 lbs.) was used.

The Results

Just 5 minutes after the application of the Mastic One, traffic was allowed to travel over the repair, making for a minimal interruption of normal traffic. The resulting ride was extremely smooth eliminating the thumps previously experienced at each crack. The County crew recognized that utilizing Mastic One to repair depressed transverse cracks resulted in less traffic interruption, less equipment and people required, lower cost and a better long-term repair. These benefits along with increased pavement smoothness and ride quality provided a great solution to a common road problem.

 

Editor's Note: Scranton Gillette Communications and the SGC Infrastructure Group are not liable for the accuracy, efficacy and validity of the claims made in this piece. The views expressed in this content do not reflect the position of the Roads & Bridges' Editorial Team.

Related Articles

Vehicles exiting the southbound span of Roosevelt Bridge. The southbound span of the bridge opened today, Nov. 5.
Vehicles exiting the southbound span of Roosevelt Bridge. The southbound span of the bridge opened today, Nov. 5. Image courtesy: Florida DOT District 4
The Florida DOT (FDOT) announced yesterday that weather permitting, the southbound span of the Roosevelt Bridge in Stuart would reopen to two lanes…
November 05, 2020
The Maine DOT is halting the use of fog sealant on state roads after an investigation determined that the slick road surface—presumed to be a result…
December 03, 2019
Figure 1. Crack Sealing Application
Figure 1. Crack sealing application
Surface cracking in asphalt concrete is a major failure mechanism that develops over the pavement service life. In general, surface cracks are…
August 12, 2019
In recent years, paving has witnessed an increased focus on preservation treatments, ranging from crack seals to chip seals to thin-lift overlays,…
November 29, 2018
expand_less