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MIRAFI RS580i woven geotextile reinforced the ballast layer, decreasing sub-ballast thickness by 55%, resulting in cost-effective railway construction. The geosynthetic-stabilized road structure integrated MIRAFI and followed AASHTO 93 guidelines, achieving a 20% cost reduction while enhancing durability
Reducing land take and carbon footprints with reinforced soil slopes
A reinforced soil slope system helps optimize land use in industrial estate expansion in Thailand. With 20,000 m² of MIRAGRID, the project created stable embankments, reduced constructions costs and maximized available land for future use.
Dredging the Schwarze Elster River with GEOTUBE
Discover how GEOTUBE® dewatering systems helped manage 10,000 m³ of sediment from the Schwarze Elster River, delivering an effective dewatering, containment and cost-effective solution.
Managing subsurface moisture at Missouri River bridge with MIRAFI
MIRAFI® H2Ri was incorporated into Missouri River bridge approaches to manage subsurface moisture, replace a drainable aggregate layer, and reduce aggregate requirements while supporting pavement construction.
Cargill, a global leader in food and agriculture, embarked on a substantial development project in Regina, Saskatchewan, Canada, to enhance its canola production capacity. Due to growing global demand, the Regina facility, located in the Global Transportation Hub industrial park, targets an annual production capacity of approximately 1 million metric tonnes.
The project faced challenges at the 296-acre (120-hectare) site, situated on a glaciolacustrine deposit with expansive and frost-susceptible silty clays. A comprehensive soil investigation, which included 40 drilled boreholes, revealed a high-plasticity silty clay layer. This layer’s low California Bearing Ratio (CBR) of about 1.5% and susceptibility to frost heave posed a threat to infrastructure longevity.
Solmax proposed innovative geosynthetic solutions for these site-specific challenges. They selected MIRAFI® H2Ri, a moisture management geosynthetic, for subgrade stabilization, addressing both expansive soil and frost heave issues.
Additionally, MIRAFI RS580i, a high modulus woven geotextile, was used for ballast reinforcement. Evaluations of the geosynthetic-stabilized rail structure, based on the Talbot equation from the AREMA Manual for Railway Engineering, showed that the structure required the same ballast thickness but with a 55% reduction in sub-ballast thickness. This adjustment led to a 20% overall cost savings compared to a non-geosynthetic rail structure.
For road construction, Solmax recommended MIRAFI H2Ri for subgrade stabilization and MIRAFI BXG120 biaxial geogrid for base layer reinforcement, following the AASHTO Guide for Design of Pavement Structures 1993. The road section with geosynthetic stabilization, incorporating MIRAFI H2Ri into the AASHTO 93 methodology, provided both mechanical and hydraulic stabilization.
The Giroud-Han method was applied for constructing the platform, integrated into the pavement structure as part of the subbase. The geosynthetic-stabilized road structure demonstrated a 20% overall cost savings compared to the original non-geosynthetic design.
This case study highlights the effectiveness of cutting-edge geosynthetic solutions in addressing challenging site conditions, including expansive and frost-susceptible soils. The use of advanced geosynthetics not only offered cost-effective alternatives to traditional construction methods but also led to significant savings for Cargill.
The integration of design methodologies such as the Talbot equation, AASHTO 93, and the Giroud-Han method underscored the efficiency and sustainability of these innovative solutions. The case study underscores the growing importance and transformative impact of geosynthetic technology in civil and environmental engineering projects.