Geocells Geomaxx
- 1. Everything tailor-made Geocells environment friendly technologies
- 2. Why geocells? The cellular confinement system was developed in the late 1970s as part of a scientific research of Presto Product Co. with the U.S. Army Corps of Engineers. This method was used as a pioneering project in operation Desert Storm dur- ing the Persian Gulf War. Cellular confinement system improves the performance of such cohesionless materials as gravel or sand. By confin- ing the material, the geosynthetic structure enables also the proper density of compaction. The main elements of this system are open sections filled with various infill materials. This infill improvement helps to eliminate the need for more costly, complicated structural elements or expensive techniques. Cellular con- finement system provides optimal solutions for poor carry- ing capacity of soil and at the same time cost-effective soil stabilization results. Cellular confinement system has been popular on the Polish market as geocells or geokrata, fabricated using me- dium-density polyethylene (MDPE) or high-density polyeth- ylene (HDPE) which is classified as non-hazardous product. Its operating temperature ranges from –50 °C to +80 °C, its melting point can vary from +125 °C to +132 °C. The plastic and its product itself are not regarded as dangerous to health. Also, thanks to its insolubility in water and chemical resistance (also in soil) it is regarded as not presenting a risk to the environment. Single cell view d= 75, 100, 150 or 200 mm W 210 m m standard cell L Section expanded
- 3. Cellular confinement system popular on market as geocells in two variants: • cellular confinement system from non-perforated textured strips, marking: (TN), • cellular confinement system from perforated textured strips, marking: (TP). Geocell is also available for the following cell depths: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm. The width dimension of the strip indicates the cell depth. Cellular confinement system is also available in different variants regarding the cell size that is determined by following weld spacing: • small cells – 330 mm ± 2 % – GWS marking, • medium cells – 465 mm ± 2 % – GWM marking, • large cells – 660 mm ± 2 % – GWL marking, Cellular confinement system brings about the following effects: • reduction of road-structure thickness as different from the conventional solutions, due to elimination of deep soil replacement, • increasing shear resistance of the geocell infill materials due to its their confinement and compaction within the cells, • reduction of soil settlement as the effect of natural compaction and prevention of lateral movements of aggregate infill of geocell, • reduction of high stresses to the subbase as the result of the improved load distribution on the adjacent geocells. • enabling stormwater filtration through the bedding layers thanks to the application of loose materials, • stability and erosion resistance of earth slope surfaces, • soil reinforcing and stabilisation for example under road embankments and sports fields. Different type of infill material With reference to the design requirements and geotechni- cal site conditions, the application of different types of infill materials is possible: • topsoil with various selected vegetation, • various mineral materials including sand, gravel, aggregate or stones • concrete of various strengths and surface finishes, • on-site fill materials, • with reference to the design requirements – combined options of the ones above. Connected sections – abutted cells walls Cell dimentions 51˚ w sc w Ic I scI Ic is manufactured
- 4. Perforation benefits • perforations and a textured surface increase the friction angle between aggregate infill and the cell wall, generating better aggregate lockup and greater overall load distribution, • perforations facilitate lateral cell-to-cell drainage of excessive ground and surface water, reducing the negative effects of trafficking over saturated soils. Installation Lightweight sections are delivered in collapsed form and are easily expanded. They can be fast and easily expand- ed in an uncomplicated manner. Infill can be placed man- ually, with simple tools or construction equipment. Geocell is installed using rectangular stretcher frames – their aim is to expand the suitably dimensioned sec- tions. Stretcher frames used in installation are neces- sary to obtain proper section geometry. They are used only during infilling and are designed for multiple use. Individual geocell sections can be easily connected us- ing versatile clip arms, staples and anchors. For more demanding constructions some other accessories are also used including tendons, anchoring systems, etc. Suitably dimensioned geocell sections are shipped to the construction site in their collapsed form, banded and se- cured with stretch foil on pallets. Sections are folded in such a manner that is easy to unfold and expand them at site. Flexible design solution Geocell constructions can be easily adapted to a wide range of design requirements and site con- ditions. The versatility of the system results from its inherent flexibility, unique load deformation behavior and suitability for a wide range of infill materials and foundation soils. Natural colored facing Standard wall sections are available with green, tan, or black facia colors to create a blending with natural environments. Special facia colors can be manufac- tured to meet unique aesthetic requirements. To meet up your individual expectations we have prepared polyethylene which is ultraviolet- light-stabilized to resist color fading and increase system durability and quality performance to levels meeting typical engineering requirements.
- 5. Strengths of cellular confinement The confining cell structure imparts an effective co- hesion to the infill material, thereby increasing its shear strength and stiffness. This improvement results from the hoop strength of the cell walls, the passive resistance of the adjacent cells and the high frictional interaction between the infill and the cell walls. The cell wall structure shows improved lateral load spreading as the result of increased wall-infill interface fric- tion; The blocks create a flexible structure bridge system of increased stiffness. The structural bridge results in signifi- cant improvements in the long-term performance of the load support system and helps to reduce the thickness of struc- tural support elements. The advantages of using cellular confinement system (geocells) for single-layer road bases, yards or paved surfac- es is the reduction of costs of ground works and infill mate- rials. The cellular confinement system enables also the ap- plication of less expensive on-site aggregate infill in place of more costly imported materials. As loads are distributed through the structural bridge over the soft subgrade, the thickness and weight of struc- tural support elements can be reduced by 50% or more in comparison to the conventional load support. Load distribution with the Geocells systemRutting without confinement Load 1 Confinement strengths created by friction strengths between the infill material and the cells walls. 2 Confinement strengths created by passive resistance of adhering cells. 3 Confinement strengths created by boudary durability of the cells walls. 1 2 3 2 3 Rutting without cellular confinement system – starts when the wedge 1 pushes and displaces zones 2 and 3 1 2 3 2 3 The system of geocells prevents rutting of the ground confining zone 2 by stopping its displacement caused by the load. Distribution of confinement strengths
- 6. About us 15 years of experience Clear cut development strategy We can say that it is the existence of our two strengths that makes us a strong and dynamically developing en- terprise. We are aiming to develop strategy based on solid information, to win advantage on the competitive market and to create efficient, customer-oriented and cost-effective enterprise. Our mission is a broader devel- opment on the European markets while keeping a strong position of a leader on our domestic market in Poland. Everything tailor-made Our aim is the delivery of tailor-made services. Fast and efficient sales require an individual approach to consumer preference! Unique performance What makes Geo Globe Polska different from its competi- tors is both quality and a comprehensive range of provided services. We take greatest care of every detail at each stage of work. Our production involves the highest technology. We hold electronic circulation of documentation and ERP man- agement system. Thanks to our professionally equipped laboratory our products undergo a thorough testing before they reach our Client.
- 7. Our team – professionals and enthusiasts There is more than a hundred qualified specialists in Geo Globe Polska, among them a lot of employees with life expe- rience in plastic processing industry. Certified quality In Geo Globe Polska we opt for quality. In 2005 we imple- mented and certified an integrated environment and qual- ity management system that conforms to ISO 9001 and ISO 14001 standards. Our products hold many approvals and certifications. We are also very proud of our cooperation with Barbara Experimental Mine in Mikołów, Central Mining Institute in Katowice, Building Technical Institute and Road and Bridge Research Institute. Awards For the three consecutive years our company has been awarded Gazela Biznesu, a prestigious award for the most dynamically developing companies. In 2008 Kruk i Fischer was among the laureates of the 18th edition of Teraz Polska contest for the production of cellular confinement system, winning the highest assess- ment scores in analyses carried out by a panel of experts in the category of Best Products. Dun and Brand Street Poland together with its partner Getin Bank granted to Kruk i Fisch- er the Certificate of Transparent Enterprise. Being awarded is an expression of financial reliability and honesty; it also boosts our prestige and competitiveness on the market. We have also been exceptionally honoured during the 6th Gala Event of the Polish Nationwide Ranking Export Leaders. From the Award Committee we received rewards in the following categories: Sales Dynamics, Sales Dynamics – Regional Stage – Southern Poland, Innovativeness 2008.
- 8. Geo Globe Polska Head Office: 40-304 Katowice ul. Wiertnicza 36 Commercial Office: 08008 Barcelona (Spain) tel.: + 34 606 354 787 acros@geoglobe.pl Geo Globe Polska www.geoglobe.pl www.geoglobe.es