AB Vilniaus GKG-3

  GB borders are used to fence carriageways from pavements or lawns. 

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1. Only natural materials are used in manufacture of the concrete environment management elements. All raw materials used by our company in manufacture are certified. In manufacture of color products German inorganic pigments are used.
             Environment management elements are manufactured from two layers by vibropress method. All customers receive declaration of conformity.
   
   
2. Fixings and tiles can be natural (grey) or colored. Were can be no visible defects on the upper side of the product for example gaps or crumbles. Upper and bottom layers have to be well pressed. Changes in colors of products can be induced by different shades of raw materials or different hardening conditions. According to the laws valid in Lithuania, the difference of shades is not regarded to as significant.
             The difference of product surface, color and facture are not normalized.
   
   
3. Surface paleness
             White marks on concrete products can occur conditioned by various factors.
             Chalky paleness can occur when "free" lime separates during concrete hardening. The lime melts in water of the solution or in rain while storing. In surface of products, lime that reacts with carbon dioxide in the air, originate and become infusible calcium carbonate. Paleness gradually disappears conditioned by environment factors. Acid particles in the atmosphere do not let the paleness disappear in a short period of time. Disappear process can continue several years.
             The paleness can be cleaned using liquids REBAnit-S or CRETEX-100 skyščiais. Spot cleaning liquids must be used following the instructions. The products must be washed with huge amount of water after the procedure.
             Chalky paleness makes no influence on the quality of the environment management elements and can not be the subject of claims. It is allowed according to the following standards: LST 1551:1999; LST EN 1338; LST EN 1339; LST EN 1340.
             Growing tendency to raise more requirements to the quality of environment management element surface is noticed in Lithuania. Smooth surface worsens strength, wearingness and durability of the environment management elements. When the upper layer is of more massive filling, it is rougher and is of longer durability.