“RUNO” Geotextile: reliability, strength, durability
RUNO geotextile is a nonwoven material widely used in construction industry to ensure leak tightness of roofing, foundations and drainage systems, in land development, etc. RUNO materials are perfectly resistant to moisture and chemical compounds; they do not rot, are not susceptible to fungi and moulds, and cannot be damaged by insects. RUNO is an ideal choice as a separating layer between sand, gravel and other particles to prevent them from mixing together, or a filtering layer in drainage systems and a coating for drain pipes, or a root-breaking layer and a protection of water insulation against mechanical damage.
Geotextile (agrotextile) materials are made from polyester staple fibers bonded mechanically (by needle punching), thermally (by calendering or heat setting) and chemically (by impregnation with a macromolecular mixture). Special technologies used in geotextile manufacture allow to achieve the optimal distribution of fibers and to form a web having spunbond-like characteristics with the same superficial weight per unit area. Unlike the practices adopted by other manufacturers, in RUNO manufacturing process at Aquaizol the use of secondary fibers reduced to the minimum (less than 5%) to guarantee the material’s high quality and abrasion resistance.
RUNO geotextiles are used in:
- • road structures;
- • drainage structures;
- • erosion protection structures;
- • roofing structures;
- • oundation works;
- • land development, etc.
These applications employ the main functions of geotextile materials: separation, reinforcement, filtration, drainage and a combination thereof.
Main properties of RUNO geotextile
High elasticity modulus, ensures that the material may absorb substantial loads and function as reinforcement at relatively small deformations.
Large elongation at break. Depending on grade, RUNO geotextile may have up to 60% relative elongation under the maximum load. Thus, local mechanical damage does not cause rupture of the material and RUNO geotextile remains usable.
Filtering capacity stems from the material’s specific structure which prevents soil particles from penetrating into pores and clogging them. This feature ensures stable filtering capacity of the material under soil pressure or during heavy vibration.
High resistance to local mechanical damagess especially important during placement of the material.
RUNO geotextile is easy to place. The rolls are rather small and lightweight, thus reducing transportation, warehousing, and labor costs. RUNO rolls may be sawed on the spot with a chain or hand saw.
RUNO geotextile is waterproof. When used in moist conditions, the weight of rolls remains the same.
Standard RUNO geotextile are manufactured using heat-setting and calendaring processes; however, a ‘cost-effective’ geotextile may be produced without heat treatment for less heavy-duty applications.
Apart from the time-tested needle-punched, heat-set and calendared geotextile with weight per unit area ranging from 80 g/m2 to 500 g/m2, we offer an innovative material: RUNO P a chemically bonded, needle-punched, calendared and heat-set geotextile.
Thanks to the technology of chemical bonding using a BASF acryl-styrene-melamine polymer binder, we have developed a material which can successfully compete, in terms of integral characteristics, with heat-bonded geotextiles manufactured using the spun bond technology.
RUNO-P geotextile is distinguishable for a substantially higher strength and a high modulus of elasticity allowing to absorb and distribute load and, consequently, serve as a reinforcement agent at relatively smaller deformations.
For exclusive solutions requiring an exceptionally high modulus of geotextile’s elsticity we have developed and patented unique high-modulus synthetic geotextiles: RUNO PRS и RUNO PRF, which include reinforcing glass scrim and glass filaments, respectively.
Comparative elongation diagram for needle-punched, heat-set and chemically-bonded geotextiles:
RUNO geotextile application areas
Road construction
RUNO geotextile forms a separating, filtering and reinforcing layer between the roadbed and fill material
- • Prevents impregnation of fill material with soil particles, thus ensuring that the fill material retains its load-distribution function and provides the overall stability.
- • Prevents uneven penetration of fill material into soil, thus helping reduce consumption of materials.
- • Optimises the undersealing to prevent the fill material from penetrating into soil.
- • Used as a filter between the soil and drainage filler.
- • Prevents impregnation of drainage filler or drain pipe with soil particles.
- • Forms a reinforcing layer on a soft, weak soil.
- • Prevents slope collapse.
- • Allows for road construction even on weak soils.
- • Reduces deformation of the roadbed.
Tunnel construction
RUNO geotextile forms a protective and drainage layer between solid rock and insulating sheath
- • Protects insulating sheath against damaging caused by rough concrete surface.
- • Protects insulating sheath against damaging caused by edged filling materials.
- • Reduces tension between concrete lining and solid rock.
- • Provides a conduit for groundwater and storm water to a drainage system.
Hydraulic engineering
RUNO geotextile serves as a filter beneath coastal reinforcement.
- • Prevents soil erosion by water.
- • Prevents erosion without additional coastal reinforcement in small beds or during flooding.
- • Provides for sufficient hydraulic permeability of coastal reinforcement.
Residential and commercial construction
RUNO geotextile is used as a filtering layer in various drainage systems (drainage of basements and flat roofs).
- • Prevents impregnation of drainage crushed stone or drain pipes with soil particles.
- • Has high water-carrying capacity ensuring fast disposal of water to a drainage system.
- • Serves a separating layer between soil and crushed stone.
- • Prevents mixing of crushed stone with soil, thus serving as a protective, filtering and load distribution layer.
- • Requires only minor soil excavation thanks to the structure’s small thickness.
- • Lessens the load on bearing structures and is easy to place due to its light weight.
Railroad construction
RUNO geotextile forms a separating and filtering layer between the soil bed and ballast bed.
- • Prevents impregnation of the earth bed with small particles, thus helping the earth bed to retain its load distribution function and maintain the bearing capacity.
- • Prevents uneven penetration of earth bed into soil, thus helping reduce consumption of materials.
- • Optimises the undersealing to prevent the earth bed from penetrating into bottom soil.
- • Forms a protective layer preventing penetration of fine particles under dynamic load of ballast material.
- • Used as a filter between the soil and drainage filler.
- • Prevents impregnation of drainage filler or drain pipe with soil particles.
- • Allows the water to flow smoothly through the drainage system.
- • Forms a reinforcing layer on a soft, weak soil.
- • Increases stability of the earth bed.
- • Increases bearing capacity.
Construction of viaducts for transportation of liquids and gas
RUNO geotextile forms a separating layer between soils
Prevents contamination of ballast material, helping retain its load distribution capability.
Pools, water reservoirs, irrigation canals and rivers
RUNO geotextile is used as a protective layer on synthetic insulating blankets
- • Protects water insulation from damaging during laying.
- • Protects water insulation against mechanical damages caused by uneven soil layer and drains groundwater.
- • Prevents slope erosion by water in the event of drawdown in a water basin or canal.
Reinforcement of embankments
RUNO geotextile is used to reinforce fine cohesive soil
- • Prevents slope collapse.
- • Reduces the heightened pore pressure of soil.
Construction of drainage systems and sporting grounds
RUNO geotextile is used as a filter in various drainage systems.
- • Prevents impregnation of drainage filler or drain pipe with soil particles.
- • Allows the water to flow smoothly through the drainage system.
- • Provides a separating layer between the filler and the soil or a sporting surface (grass, sand, etc.).
- • Prevents the mixing of filler with soil or surface and performs a water draining or load distribution function.
- • Requires only minor soil excavation thanks to the structure’s small thickness.