Superior soil stabilization performance
Global Road Technology (GRT) is a recognised leader in the field of polymer soil stabilization around the world. Extensive investment into research and our international experience has helped us formulate some of the most effective and advanced soil stabilization agents available.
Our cost-effective products are non-toxic, environmentally safe and extremely robust, with a unique patented application that physically and chemically bonds soil or pavement particles leading to improved compressive strength, high tensile resilience and water impermeability.
Designed to mitigate against degradation caused by weather or traffic, our advanced soil stabilization products are ideal for a variety of applications, from public road pavements, to hardstands and lay-down areas, right through to unsealed haul, rural and service roads.
The mechanistic design principle for pavements is driven by material performance, and is also focused on the weakest point in a pavement, the bottom face of a base course layer. With modified pavements, or those treated with cement, design is particularly limited by the low tensile capacity of the layer; therefore the pavement needs to be designed thicker.
By offering a greater resistance to tensile failure GRT PCM can provide savings, by enabling significantly reduced pavement thickness.
Figure 1: Contrasting GRT Stabilised pavements with those stabilised with traditional agents.
Benefits: Stabilisation with GRT PCM
GRT PCM is a revolutionary polymer stabilisation technology specifically developed for the use with either pozzolanic agents such as cement or lime. The benefits it provides are:
- Fatigue crack reduction
- Induced crack reduction
- Shrinkage crack reduction
- Water proofing
- Increase compressive strength
- Increased tensile strength
- Increased resilient modulus
- Reduced pavement thickness
PCM improves significantly, inherent resilience against cracking caused by shrinkage and flexing. High internal stresses that normally result during the hardening process are mitigated in the crosslinking process setup between the long chain polymers, pozzolanic cements and water, result in the hydration products becoming less brittle when they form round the soil particles.
Resilience to failure from external forces such as; settling, heaving subgrades, and high traffic volumes is greatly enhanced. More cost effective designs are now possible where a stabilised base layer can be constructed to full pavement thickness without the concerns of reflective cracking.
Figure 2: Flexural beam test data recorded from the test method: D1635/D1635M – 12 Flexural Strength of Soil-Cement Using Simple Beam with Third-Point Loading
Road Rehabilitation and Social and Economic Benefits
GRT stabilization products transform end of life, out of spec roads and pavements into safe, durable infrastructure, in a cost effective manner. All roads and pavements age and are compromised over time or by increased traffic volumes, resulting in a range of symptoms including dust, potholes, rutting, corrugation or total pavement failure. This can also result in vehicle accidents, can cut off communities, and impact on the flow of goods people.
With GRT’s polymer soil stabilization technologies, you can alleviate these very real social, environmental, and economic concerns.
GRT Soil Stabilisation Processes
GRT stabilisation products can either be in-situ blended into the existing road material or added into new materials through a pugmill at a quarry or stockpile site.
Materials are then spread, compacted and trimmed to required design specification. With a skilled crew able to lay an impressive 7,000m2 per shift, it can offer significant savings that range between 4 and 10 times cheaper when compared to traditional bound pavements such as asphalt and concrete.
Polymer Modified Cement
Polymer modified cement created by Global Road Technology is a combination of cementitious binder, GRT polymer, water and granular material. These components are mixed together and compacted in the early stages of the hydration process to form a pavement layer that is subsequently cured.
(Black) Polymer Soil Stabilization
GRT’s most advanced polymer soil stabilization product, GRT9000 is engineered for use in the construction of high-quality and cost-effective pavements. Mitigating surface degradation, GRT9000 bonds soil or pavement particles together, improving compressive strengths, high tensile resilience and water impermeability.