Erosion control

Erosion control


Surface erosion is the process of soil particles leaving the surface of the slope, caused by environmental phenomena such as rain and wind. This process may cause notable structural damage to infrastructures or generate pollution of reservoirs and water courses, causing major economic and environmental damage. Slope stabilisation by restoring the plant cover and without using specific structures is not sufficiently safe and never manages to cover 100% of the slope, leaving zones exposed to erosion. Moreover, if the plant cover is reduced or disappeared, major lack of stability problems may appear again.

A. Bianchini Ingeniero, S.A. proposes a series of products with the purpose of protecting against erosion phenomena and permanent stabilisation of slopes, preventing their environmental degradation and facilitating restoration of vegetation in order to achieve perfect recovery of the environmental system.


Gabion structures provide a wide field of applications in erosion control and ground stabilisation. The basic characteristic of the triple twist hexagonal mesh grid is that it facilitates absorption of the efforts borne by these gravity structures and protects the land from erosion of the natural or artificial agents (wind, water, snow, etc.).


Lining gabion is a matress shaped Gabion 17 or 30 cm thick. Its main applications are lining the banks of rivers and canals, protection of bridge abutments, foundation platforms and consolidation of slopes along roads and railway lines. Their function is to protect these sites against the erosive action of water and wind.


Its function is to control minor rock-falls that take place on the sides of mountains or slopes, and to confine the fragments that have come loose at the base of the slope, thus avoiding greater falls and erosion, and avoiding the fragments being deposited on the roads, lines or areas transited by people.
This system is used when the rocks liable to fall and their fragments are not smaller than the actual opening in the mesh, nor greater than 0.5 m in diameter.
Triple twist mesh is the ideal solution because it provides flexibility in all directions and, even though one of the wires may break, the mesh does not unravel as happens with Single Twist mesh.


BianMat® is a geoblanket manufactured with thermowelded polypropylene filaments at the contact points. Its main function is to confine the particles of soil, guaranteeing good stabilisation of the surface lined and facilitating seed germination.
BianMat® has a three-dimensional structure with voids in more than 90% of its volume.
It is used to protect slopes against surface erosion and to stabilise coverages in sanitary fillings. Its presence prevents the soil becoming a sterile surface due to the action of rainwater or wind.


BioMac® is an organic blanket formed by high resistance, slow degradation fibre material, such as straw or coconut fibres, and this is interwoven with synthetic filaments. Its characteristics allow a product with a great resistance and low hygroscopicity to be offered.
BioMac® has multiple applications, especially where one wishes to protect the soil for a longer period, and where one requisites a material with very low environmental impact


Woven and non woven geotextiles in the MacTex® family are regular flat structures, produced by assembling filaments of high tenacity virgin polypropylene fibre.
Thanks to the quality of their production processes, MacTex® geotextiles have excellent technical characteristics and high resistance to chemical and biological degradation. Their high permeability allows fluids to flow through their structure, retaining the soil particles and, thus, replacing the traditional granulometric filters. The MacTex® product range is very large and may be used in drainage works, landfills and repaving streets and roads. Its gram weight, thickness and puncture resistance allow it to be used as a separation element between soils of different characteristics, avoiding these mixing together. They are also used as geomembrane protection to avoid localised efforts, assuring their functionality.


A wide range of drainage sheets for different applications in the field of hydraulics. The MacDrain® range includes different drainage materials comprised of a three-dimensional polymer drainage core and one or two non woven geotextiles that act as filters.

• They form and maintain high flow surfaces over time for liquids and gases,
stabilising the ground.
• Their high robustness ensures minimisation of damage during placement of
the material.
• Their lightness and ease of handling allow very fast placement.
• Protects the water-proofing system against eventual mechanical damage.
• It is a non contaminating material that is resistant to chemical and
biological attacks.