Quasco Case Studies
Case Study 1
Rubblization: Design and Construction Guidelines on Rubblizing and Overlaying PCC Pavements with Hot-Mix Asphalt
Rehabilitation of existing pavements is one of the greatest pavement priorities facing local, state, and federal transportation agencies. The use of hot-mix asphalt (HMA) overlays presents a long-term and economical solution to the pavement rehabilitation challenge. HMA overlays increase the structural capacity of the existing pavement system and improve the long-term functional pavement performance including ride, noise reduction, splash and spray, friction, and general appearance. Read more.
Case Study 2
Shanghai’s Experience on Utilizing the Rubblization for Jointed Concrete Pavement Rehabilitation
As agencies continue looking for cost-effective methods to rehabilitate deteriorated JCP, rubblization using resonant breaker has been experimented by the Shanghai Municipal Roadway Authority (SMRA). It was demonstrated that rubblization using resonant breaker offers a viable option for the SMRA because the rubblized pavement sections have been performing very well with no visible distress. Read more.
To access this Case Study online, please visit the American Society of Civil Engineers' Library:
Case Study 3
Portland Cement Concrete Pavement Over Rubblized PCC - Wisconsin DOT
This report presents findings of research conducted to determine the viability of constructing Portland cement concrete pavements over rubblized PCC. Rubblization of aged PCC pavements is a common technique for in-place recycling of these pavements. For the vast majority of applications, the rubblized PCC layer is surfaced with hot mix asphalt (HMA). The use of Portland cement concrete as a surfacing material offers designers another option which may provide good performance and be cost-effective under certain conditions. Read More.
Case Study 4
Concrete Pavement Rehabilitation Using Resonant Rubblization Technology
Reflective cracking distresses frequently occur on the hot mix asphalt (HMA) overlay due to the movements of the underlying Portland cement concrete (PCC). Rubblization was proven in North America to be an effective approach among slab fracturing technologies for solving the premature reflective cracking problem. Read More.
Case Study 5
Vibration Monitoring of Sonic Concrete Pavement Breaker
Saguaro GeoServices was to determine if vibrations from the sonic concrete breaking machine could potentially cause damage to the property at 815 W 18th St. SGS positioned monitoring equipment along the EB I-10 Frontage Rd, next to the property. The sonic concrete breaking machine was directed to the demolition area that was nearest to the property, about 125 ft from the monitor, and made two passes while under operation. Read more.