Stabilisation of plastic and granular soils
Different techniques and materials are used to stabilise and improve the condition of the road base, so that we can obtain a higher bearing capacity, modifying and improving the engineering properties of the soil.
Depending on the type of soil, we will need to use different soil stabilisation methods and products. These methods can be done by mechanical soil stabilisation, simply by compacting the soil, or we can improve it by using some products in case we do a chemical soil stabilisation.
The behaviour of low-plasticity granular soil is completely different from that of high-plasticity clay soil. While low-plasticity granular soil will drain rainwater to the lower layers, high-plasticity clay soil will absorb the same water, causing the soil to swell and expand.
POLYAST offers a wide range of technical solutions, depending on the type of floor and project specifications:
Chemical soil stabilisation techniques do not require special technologies or special know-how different from mechanical soil stabilisation. They greatly improve the results, making them an easy to apply and cost-effective solution in the long term.
All our products are manufactured in the EU under strict quality controls, according to UNE, ASTM and ISO standards.
Soil stabilisation is a construction process in which natural and usually clayey soils are subjected to in order to improve their qualities: to increase their strength, their bearing capacity, to reduce their plasticity, to reduce their water absorption capacity, to facilitate construction works or to increase their stability by reducing structural problems.
The main advantages of using our soil stabiliser is that it is much more economical than other traditional systems such as cement or lime. It is also much easier and quicker to apply. However, the result is better because, as it is a liquid product, the capacity to envelop the soil particles is much greater than that of traditional products in solid format. The result is strong and long-lasting, which greatly reduces maintenance costs.
In addition to basic small tools such as shovels, rakes and some picks to remove oversized stones from the soil, the following machinery is needed:
Collect soil samples at 150 mm or 200 mm depth and take them to a laboratory for the following tests:
The results can be sent to us by email to info@polyast.com. If you do not have a laboratory near you, please contact us. You can send us the soil samples and we will carry out the tests. Laboratory costs are to be paid by the customer.
The most important thing is to know how much soil stabiliser to apply per m3 of soil, as this is what changes the characteristics of the soil. The amount of water with which the soil stabiliser should be dissolved, although there are indicative amounts for each product, the truth is that it should be adjusted to the OMC (Optimum Moisture Content) of the soil. This is a fixed percentage calculated in the laboratory, which must be approached by adding more or less water to the soil.
The optimum moisture content is that which allows the soil to be moist enough to be compacted to its maximum, but not so moist that it loses stability and compactability. The OMC is one of the data you will get from the test in your laboratory.
It depends on the type of soil, product to be applied, soil moisture (very important, this can alter the whole project), weather, unforeseen breakdowns, etc... But an approximate is 200 m. to 300 m. of road (6 to 7 m. wide) per day, counting on a complete set of machines, experienced operators and good weather.
Depending on the intended use of the road. If it is a road with a lot or little traffic, if it is going to be used by light vehicles or heavy trucks, etc.... Thicknesses normally vary between 150 mm. and 200 mm.
The soil stabiliser is not affected by rain. In fact, once the soil stabiliser is applied, by increasing the density of the soil and the cohesion between particles, it will waterproof the treated surface.
All our products are environmentally and human health friendly.
The benefits of soil stabilisation are an increase in the structural strength of the road. It increases imperviousness and durability, reducing the costs of
maintenance costs. Dust control reduces erosion of the wearing course, increasing safety for vehicles. It increases the longevity of the road, and reduces the discomfort of dust for vehicles and pedestrians.
Soil stabilisation and the construction of roads, highways, motorways, layouts, car parks and sports fields, industrial estates, industrial zones, airports, dams, landfills or rubbish dumps.
Yes, in fact, stabilising the base would be the first step before paving any road. Follow the standard product application instructions and allow the treated area to fully cure prior to the application of any type of pre-asphalt tack coat.
Yes. Stabilised roads, like paved roads, need maintenance and minor repairs due to vehicle traffic, heavy equipment and even small vehicles at excessive speeds (which wear the wearing course more than heavy vehicles at slow speeds), weather and general wear and tear. These repairs are simple and very inexpensive to carry out if proper attention is paid to them and they are carried out in a timely manner.
DUSBIT is a product specially designed for stabilisation of granular soils of low plasticity and for use as a dust suppressant for any type of soil.
BINSOL is an ecological product for the stabilisation of clay soils of medium to high plasticity; and BOREX is an ecological BIO-product for the stabilisation of clay soils of high plasticity.
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