Full-Depth Reclamation on Hickory Hill Lane, Clay County, Illinois

Project Recap: Full-Depth Reclamation on Hickory Hill Lane, Clay County, Illinois

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In 2024, Mt. Carmel Stabilization Group partnered with Clay County to address a six-mile stretch of Hickory Hill Lane. Our team worked closely with the county engineers from concept to completion, providing a custom solution that would give the road the long-term stability it required.

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Identifying the Problem

During our initial assessment, we discovered that the road’s base was compromised by chemical contamination, and higher dosages of cement during mix design testing were not yielding the necessary strength to create a durable roadway.

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Tailored Solution

To address the unique conditions of this road, Mt. Carmel Stabilization Group employed a custom-engineered solution. We began by conducting detailed soil testing, which revealed the presence of a contaminant that was affecting the road’s structural integrity. After further investigation, we proposed an innovative approach, including a 20% addition of the existing base thickness with virgin aggregate, combined with a 6% cement application.

This multi-step process included:

• Preliminary Testing: Our team collected bulk samples at three different locations from the existing road to understand the chemical composition and existing soil conditions. Our initial FDR mix design testing confirmed the need for a more tailored solution.
• Virgin Aggregate Replacement: The inclusion of virgin aggregate in the proposed FDR layer ensured the cement-treated FDR base could meet the desired strength to support heavier traffic.
• Cement Stabilization: The road was treated with 6% cement by weight, which was mixed into the virgin aggregate and existing pavement, creating a robust, long-lasting foundation.

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Execution and Results

Our crews worked efficiently to implement this solution over the six-mile stretch, ensuring minimal disruption to local traffic. This was followed with a standard oil and chip application. By the end of the project, the results were clear. The county engineers were pleased with the outcome, as the road now boasts a significantly stronger base and smoother surface, prepared to handle increased traffic with reduced maintenance needs.

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Long-Term Impact

This project demonstrates Mt. Carmel Stabilization Group’s commitment to providing value-engineered solutions tailored to the unique needs of each client. The full depth reclamation project on Hickory Hill Lane not only restored the road but also extended its lifespan significantly, reducing the county’s maintenance costs in the years to come.

By partnering closely with the county from the early planning stages through testing and construction, we were able to deliver a road that meets the specific challenges posed by the local soil conditions. This collaboration is not unique to one client. It is the standard for how we approach every project, showcasing our expertise in delivering tailored, innovative solutions that address the root cause of each project’s subgrade struggles.

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To experience this custom approach for yourself, contact one of our Project Managers today. Contact Us

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