MATICH CORPORATION & PAVEMENT RECYCLING SYSTEMS TEAM UP ON REDLANDS AND RIALTO STREET OVERLAY PROJECTS

12 AMERICAN ASPHALT & CONCRETE, INC.18 GRANITEROCK

ASPHALT CONSTRUCTION ISSUE

Pavement Recycling Systems Provides Cold Milling and Full Depth Reclamation (FDR) Services for General Contractor Matich Corporation on Redlands and Rialto Street Overlay Projects

CITY OF REDLANDS PARIS STREET OVERLAY PROJECT

The City of Redlands maintains 378 lane miles of local streets, 129 lane miles of minor streets and 133 lane miles of major streets. That’s 640 total lane miles that must be maintained, and when necessary, replaced to keep their city streets safe for the 814,000 vehicle miles traveled each day citywide. It has been seven years since the Redlands City Council approved the Pavement Accelerated Repair Implementation Strategy (PARIS), which is based on pavement management data collected on the condition and traffic volumes of the City of Redlands streets to create a matrix ranking the repairs.

One of the standardized methodologies used for accessing pavement condition is the Pavement Condition Index (PCI). PCI provides a simple, convenient and inexpensive way to monitor the condition of a

pavements surface. It is a numerical index measured between 0 representing a worst case condition and 100 representing a best case condition. Back in 2012, California posted a statewide average of 66, categorizing the overall pavement condition as “at risk”. The City of Redlands scored an average index of 53 in the same year, categorizing the pavement condition as “at risk” and approaching the “poor” condition. After implementing the PARIS strategy for five years, the City of Redlands posted a PCI of 83 or “good to excellent” rating in 2017. Before the PARIS strategy was implemented, around 83 miles of Redlands streets had been repaired from 2007 to 2013. By 2017, 330 lane miles of streets had been resurfaced through the PARIS program with around 105 street miles left to be paved after 2018.

Matich Corporation (Matich) is one of the contractors involved in the multiple phases of the PARIS

Redlands project. They supplied the hot mix asphalt, paving crews and laborers for the fourth phase of the PARIS initiative known officially as the Paris 2017 Resurfacing Project (1491-1740) Project No. 41501, which we will refer to as the PARIS resurfacing project. The scope of their work consisted of resurfacing various streets throughout the City of Redlands. This required the implementation of several methods including asphalt pulverization, Full-Depth Reclamation (FDR), grind & overlay, header cut & overlay, type II slurry seal, and all markings and striping. They were also asked to replace curb & gutter and cross gutter as necessary, as well as to replace water services with a new meter box, protect all existing utilities, trees and monuments, and do any other necessary public or private improvements as deemed necessary to restore all areas to pre-construction quality and conditions.

By Brian Hoover, Editor

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Left: Representative

distressed pavement requiring an Engineered

Full Depth Reclamation (FDR) reconstruction of the existing pavement

section. FDR saves time and money, while reducing community and

environmental impacts.

Above: PRS utilized a Wirtgen 240i reclaimer to perform both the asphalt pulverization and cement stabilization that comprise the FDR process. Use of this machine

allows for in-place recycling and construction of FDR sections of

up to 18-inches in a single lift operation.

The PARIS resurfacing project for the City of Redlands, consisting of pavement work in primarily neighborhood and surrounding arterial streets, began in May 2018 and was completed in February 2019 with a final price tag of around $7,674,000. Jake Reade was the project manager in charge of overseeing this Full-Depth Reclamation (FDR) overlay project in Redlands. FDR is a sustainable engineered process that allows an agency to reuse its existing pavement materials in the reconstruction of the new pavement. “Various methods of pavement construction processes were

performed on this project, including a cold mill and overlay pavement rehabilitation strategy,” says Reade. “The more severely distressed pavements on the project required an FDR with cement pavement reconstruction strategy to include both FDR 200 that required both asphalt reclamation and in-place cement stabilization of the subgrade soils, and FDR 25 to encompass the asphalt pulverization and grading process.” Reade further adds “that by reusing existing materials in-place, the FDR process reduced construction time by about 30 percent as compared to “remove and replace” reconstruction alternatives, significantly reducing the impact of construction operations on the community.”

The City of Redlands derived its name from the color of the area’s red adobe clay soil. Jon Dooley was the superintendent overseeing the pulverizing and

cement stabilization work being done by Pavement Recycling Systems (PRS) as a subcontractor to Matich Corporation. “The clay soil on this project was extremely unstable, particularly when moisture content was above normal,” says Dooley. “These soils will not stand up to the 80,000 pound-plus construction machines that pass over the road surface once the existing asphalt is removed. We use the specified Engineered FDR methods to create a solid foundation to support the construction operation, as well as the pavement throughout its service life.” Dooley says that the FDR is a high production process with PRS stabilizing an average surface area of around 75,000 square feet each workday. “Once the existing pavement section is removed, the soil stabilization process begins at a rate of 4 percent cement for the depth of treatment specified by the agency.”

He also points out that once the cement was mixed into the soil, the treated area would cure

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for one to two days before being microcracked and paved with asphalt. “The goal was to have each section completed in its entirety within three to four days. This was done over the entire 1.6 million square feet of area that was cement stabilized,” says Dooley.

“As with most paving projects, the most challenging aspect of the project from the PRS perspective was coordinating operations around busy local and arterial residential type streets.” Dooley also points to the logistics of scheduling the various phases of the project with multiple construction locations across the City of Redlands. “We have to perform a significant volume of work each day while minimizing the impact on the community, both businesses and residents. The FDR process minimizes this impact because it

allows for access to businesses and homes at all times,” says Dooley.

From a sustainability standpoint, the FDR process required approximately 115 truckloads of cement as compared to over 3,700 truckloads that would have been required for the “remove and replace” pavement reconstruction alternative, eliminating the environmental and community impacts of approximately 3,600 trucks. Additionally, Pavement Recycling Systems milled and removed around 119,000 square yards of asphalt pavement with the cold milled asphalt being trucked back to one of Matich’s three asphalt plants, the closest being right there in Redlands on Alabama Street. This material is not wasted but reused as reclaimed asphalt pavement (RAP) and put right back into the asphalt manufacturing process. The asphalt from the areas that required soil stabilization was stockpiled at a

local dump site where it would be recycled and used as either base material or ground cover at the landfill site.

Matich Corporation provided around 50,000 tons of asphalt on this particular project. Their paving crews used a Cat 1050 paving machine that performed different lift requirements depending on whether it was a residential or arterial street. “For the most part, the asphalt was placed in a 2 ½ inch lift with a Greenbook C2 ½ inch mix utilizing RAP,” says Reade. “Our paving crews are extremely professional and efficient, and we were in good hands with Matich superintendents Robert Del Toro and Kelly Koleszar, as well as with PRS Foreman, Jake Schakel. The project was completed on time and on budget and was another example of a job well done with the combined efforts of Matich Corp. and Pavement Recycling Systems.”

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Above: PRS distributes

Portland cement onto the roadway section at the Engineer’s prescribed rate of application prior

to mixing the cement and water with the underlying base and soil materials to

construct the FDR section.

Right: Matich Corporation used a CAT motor grader to prepare the roadway for

cement stabilization after the asphalt pulverization process.

Far Right: PRS used an 84-inch padfoot roller to compact the FDR section to the specified

relative density.

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RIALTO 2017/18 ANNUAL STREET OVERLAY PROJECT

Every year, the City of Rialto awards their annual street overlay project to the low bidder. Like in the City of Redlands, Matich also has an asphalt plant in the north end of Rialto. “We seem to do very well when bidding for jobs in cities or surrounding areas where we have an asphalt production facility. It is obviously a great advantage to be vertically integrated and capable of being both the supplier and paving contractor on these types of projects,” says Reade. “We successfully won the Rialto annual overlay project with a bid of $3,588,000 and began our construction efforts in March 2019 with completion scheduled sometime in July.”

Pavement Recycling Systems’ (PRS) Jurupa Valley branch manager and project coordinator, Nicole Valdez, is part of the management team overseeing the Rialto project. “Although the project calls for around 10,000 cubic yards of asphalt grinding and removal at 0.0’ to 0.17’, the majority of the project involves FDR with cement along Merrill Avenue, a four lane arterial roadway. PRS pulverized the existing 6-inches of asphalt and cement stabilized around 340,000 square feet of existing soil with 2 percent Portland type II/V cement to a depth of 0.35’. We completed approximately 85,000 square feet per day and completed the job in four days instead of the scheduled five,” says Valdez. “Unlike the Redlands project, Rialto has good soil and rock material to work with, so the cement stabilization was more to increase the strength of

subgrade without having to import base material. We used a lower application rate of cement to create a substantial structural section due to the existing desirable subbase.”

Once again, Matich provided the hot mix asphalt as well as the paving and general construction crews for this project. “We performed different applications at various parts of the job,” says Jake Reade, Matich superintendent. “There was deep lift removal involved where we milled and removed six inches of asphalt and then put six inches of deep lift back in, followed by paving a two-inch rubberized cap over the six-inch lift.” Matich provided and placed around 26,000 tons of Greenbook standard ¾ Type B mix, which is more robust and contains larger aggregate for a heavier structural section. “The main section was Valley Boulevard in Rialto which parallels Interstate 10, and it experiences heavy traffic and high commercial truck usage which required a more substantial structural section,” says Reade.

Pavement Recycling Systems used their Wirtgen 240i pulverizer for both projects, as well as a

Above: Matich used a

CAT 1050 to pave over the FDR section. Matich

and PRS worked in concert to maximize production and

provide the highest quality pavement.

Right: Matich Peterbilt Strong Arm Dump trucks are supported by the FDR

section during paving.

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spreader truck to accurately apply the cement material and an 84” pad-foot compactor along with two 4,000-gallon water trucks. Matich Corporation had between 10 to 30 field staff on-site for all aspects of the operation and a variety of heavy machines including wheel loaders, skid steer loaders, rollers, excavators and their Cat 1050 paver. “We work with PRS on a variety of projects every year and use them almost exclusively for all of our grinding and stabilization needs,” says Reade. “I want to thank all of the PRS team members who have worked very diligently on both the Redlands and Rialto projects. I would like to also recognize our entire Matich team, along with PRS’ Jon Dooley, the superintendent in charge of the Rialto project, as well as Robert Del Toro and Kelly Koleszar who oversaw the field operations on the Rialto job. It is always a pleasure working with such great people that always give their very best.”

Pavement Recycling Systems (PRS) started out in 1989 and is now a 100% employee owned company. PRS started out providing cold milling services to the Southern

California market, and has grown over the years into a premier general engineering sub-contractor serving all of California. They provide owners, engineers and contractors with sustainable, cost-effective pavement solutions for every stage of the pavement structure. The work they perform includes cold milling, cold in-place recycling, cold central plant recycling, soil stabilization, full depth reclamation, diamond grinding, pavement preservation, value engineering and non-destructive testing services. For more information on Pavement Recycling Systems, please visit their website at www.pavementrecycling.com or call Marco Estrada at (951) 205-6000.

Matich Corporation has been providing heavy construction, aggregate and asphalt products to Southern California for more than 100 years. Family-owned and

operated for four generations, they are a full-service construction firm providing earthwork, fine grading, concrete word and asphalt paving services. They own and operate their own asphalt plants in San Bernardino and Riverside counties and are vertically integrated to better serve their private and public asphalt paving clients. Their asphalt plants are equipped with Caltrans certified quality control labs to offer the finest asphalt products available in Southern California. For more information on Matich Corp., please log on to www.matichcorp.com or call their corporate office in San Bernardino at (909) 382-7400. Cc

Above: The coordinated and efficient efforts of Matich and PRS

resulted in minimizing the effects of construction

on the community.

Right: Completed pavement consisting of a structural section

of hot mix asphalt paved over the FDR Cement

foundation.

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