Technoblog

IN THE USA HELD PUBLIC STABILIZATION OF SOILS

16.03.2020
310

Specialists from URETEK's US office have tested Deep Injection injection technology

 

An open demonstration of soil stabilization using geopolymer resins took place at the University of Pennsylvania, located on the small campus of University Park.

A monolithic polyhedron capable of withstanding significant external pressure was formed from several layers of soils of different granulometric composition using geopolymer resins. For the test, volumetric containers of plexiglas 9.5 mm thick, fastened together with angular metal-roll 50 × 50 × 3.2 mm, were assembled

Each tank was layer-by-layer filled with various types of soils. On the first, lower level in the tank, there was a 23-cm layer of silt soil mixed with stone screenings, on the second - a 15-cm layer of sand of the middle fraction, on the third - a layer of small river rubble (fraction 10-20 mm), and on the fourth, at the highest level is a limestone rash (fraction - 50 mm). Each of the layers was sealed with a strait from a height of about 90 cm.

URETEK specialists injected approximately 70 kg of geopolymer resin into each of the filled containers. Thanks to the presence of transparent walls, viewers could personally see how the gradual spread of geopolymer resins and the filling of voids during stabilization and amplification of the soil mass occur.

After the hardening of the Uretek compound took place, which completed approximately 15 minutes after the injection, the angular metal profile was dismantled, the side walls of plexiglass were removed.

As a result, a monolithic polyhedron capable of withstanding significant external pressure was formed from several layers of different soils using geopolymer resins. For visual evidence of an increase in the bearing capacity of stabilized soils using a grader weighing 5.5 tons, a compression test was carried out.

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