Development of earthmoving and road construction technologies

Development of earthmoving and road construction technologies

Considerably increase living cycles for roads without upper concrete or asphalt
layers.

INTRODUCTION

About Technologies

Our company, having long-term experience in earth-moving engineering and consulting services started in 1985 as the company ESCMP LTD in Russia. Its area of expertise was the construction equipment designing, it’s testing, and implementation, engineering, and technology assistance during the construction of automotive roads and highways, railway roads, water dams, hydraulic-electro power plants, boring technologies, tunneling machines, and technologies, etc. In 1995 new company prolonged the same activity in the USA and from 2007 we proceeded with the problems of soil stabilization issues jointly with manufacturers and distributing companies.
Road Alliance works with ideas of stabilization initially started from 30 years of XX century, but now we are in a stage of new methods and materials developing and it’s wide practical usage. New approaches with materials based on the molecular transition technologies and our technologies of soil monitoring and local soil sources optimal laying together should dramatically change our day-by-day experience in civil, transportation, and energy construction running and financing.

Practically there are three main or general lanes of our activity:

  • New materials (stabilizers) provoking long term or sustainable stabilization inside soils layers, laid down and compacted during construction;
  • Implementation of new methods of earth-moving works monitoring and control, and current conditions construction adjustment for maximizing construction durability and financial saving;
  • Implement new earth moving machines and contemporary technologies for earth
    moving and construction work with soil, concrete, and its aggregates.

Based on above world science R&D and our current researches, especially with our soil control monitoring system and new technological approaches, we have now industrially available highly effective catalysts stabilizers allowing us to:

  • Considerably increase cohesion between soil particles, raising the durability and stability of soil layers and as a whole road, dams, slope soil covers and also increasing their water stability and permeability;
  • Vary the thickness of separate layers of a multilayered road due to changing the thickness of separate layers with the additive of our stabilizers. It allows having significant savings due to the reduction of volume of hauling earthworks, and even due to the possibility for reduction of the thickness of the top layers (asphalt and concrete) of the road. In other words, increasing the durability of underlying soil layers allows not only to reduce their own thickness at the same level of bearing capacity of the layer but also to reduce the thickness of more expensive top layers. The durability of the road thus will remain as projected or even higher.
  • Considerably increase living cycles for roads without upper concrete or asphalt layers. The same results will be with stabilized underground layers on the highway construction. Our monitoring of the currently available information confirmed that the maintenance periods for the new roads with stabilizers have increased from 3 to 8 years, depending on the type of upper layer materials (Database collected in USA, China, Israel, Morocco, etc).
  • Start bricks manufacturing from widely available soils with clay particles using stabilizers (currently brick manufacturers have to use special only special grades of clays from mine and open pits).
  • Develop new active and environmentally safe stabilizers for a wide range of concrete improvements (strength, corrosion stability, time of hardening).
  • Considerably increase the speed of hardening for a wide spectrum of concretes.
  • Increase concrete resistance to salt corrosion in seawater.
  • Receive significant economy due to general reduction in the volume of earthmoving works (hauling, compaction, grading, etc.).

 On the above basis we have done some preliminary presentations of our innovations in Europe (Bulgaria, Macedonia, Ukraine, Latvia, and Russia), Asia (Uzbekistan, Kazakhstan, Hong Kong, Mongolia), and find out serious interest from local state transportation and industrial authorities. We communicate with African and Asian companies and find out that there are real possibilities for our technologies usage also, including but not limited to developing countries: Tajikistan, countries of Middle East, India, Pakistan, Caucasus countries, and African ones (Tanzania, Morocco and Nigeria).

Positive responses to the initial presentation encouraged us to proceed forward locally and internationally. With the authorized companies from the above-mentioned countries, we started constructed projects evaluation and material realization of the following:

  • Modern multilayered roads of categories 1-3 in Russia project evaluation.
  • Construction constant dirty and temporary forest roads in Latvia and Ukraine.
  • Design analysis for soil stabilization at sport speedway trek in Latvia.
  • Construction design for zones with seasonal frosting and zones of permafrost (Tatar Republic of Russia).
  • R&D for strengthening slopes on dams, curved roads segments, and similar
    engineering sites (India, Russia).

Each direction of works has diversified technical and economic features, but the whole principles of our product application are identical.
 The stabilizer-catalyst added into the soil as in a road material, or in the soil as initial material for bricks, or in a solution of concrete during its mixing at the concrete plant. The catalyst added in the form of the liquid (water) solution, prepared according to our specifically confirmed rate of application.
 Optimization of stabilizer concentration in the form of a liquid solution entered into the soil at the construction site allows to compact soils as much as possible to the level of maximum achievable density. Economic perspectives of catalysts application are variable depending on many factors, but our experience confirmed that we might have about 25-30 % of saving in comparison to typical construction cost without stabilizers. For road or other earth moving construction, we will have it due to the only reduction of volume of building materials, delivered and stacked in a roadbed.

Other and more significant savings (around 150-200% from the usually estimated) should be from lengthening the period of road and other objects (dams, airport stripe, building, etc.) durability and so far decreasing the cost of maintenance before full repair or reconstruction.
We should underline once more, that we are offering not only new materials for stabilization and construction materials properties improvements but our own technologies of their applications and variants of the special equipment for monitoring stages of construction of roads and general constructions, guaranteeing the achievement of the maximum technical effect of stabilization usage and significant economy.