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<table border="0" cellpadding="0" cellspacing="0" width="100%" class="forumline"> <tr> <td class="cat" width="22%">Autor</td> <td class="cat">Wiadomość</td> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>06nike7394ud</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/Avalanche/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Śro 7:34, 15 Gru 2010<span class="gen"> </span> Temat postu: mac cosmetics wholesale Cracks in concrete structu</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Cracks in concrete structures, identify and repair: American Concrete Institute Committee 224 <br /> <br /> <br />Article surgery with a hard tile in the mortar on the number of F can be struck with a hammer. Slate or with a sponge trowel (Spongefloat) tapping a few, can improve the surface appearance. Water should be dumped after repair or maintenance of property for conservation units. Wetland conservation is the easiest way to cover the length of a crack along the folds of wet sacks. 5.1O suppression of a sulfuric acid method to crack loving dogs during the construction of mass concrete structures, due to surface cooling t7 · \ it cracks or other causes, may progress with the construction of new concrete to the extension and expansion. By blocking the tensile stress cracks and spread to a larger area, can inhibit the cracks. The specific practices are: the construction of mass concrete structure, after cracks found in the cracks, and (1) will be cleared area near the crack J (2) metal tube with a semi-circular cross-section covered in cracks on the tube so divided paved section, so that the center of the tube cracks aligned} (<img src="http://picsrv.fora.pl/images/smiles/new_cool.gif" alt="Super" border="0" /> and then cover the section of pipe welded together j (4) the top of the cover tube openings to insert grouting pipe; (5) installed grout tube, leads to hand to the laying of the concrete in the cover concentric tubes. Ying slurry pipe to the future with a crack filling, thereby restoring the continuity of all or part of the structure. 5.11 diffuse material gather Taiwan blot single polymer system can be effectively used to repair cracks. Single-polymer system is a liquid, by the will of Taiwan into a solid synthetic resin handle composed of small organic molecules. Single polymer with different degrees of volatile, toxic and flammable, and can not be mixed with water. Highly mobile single polymer, can be absorbed by thousands of concrete, filling cracks in the area and water are very similar. Single-polymer system for impregnation include catalytic Jing (or contact) and the basic single-polymer (or complex single-polymer). Including cross-linking agent. When heated, single polymer to connect together (ie play the role of poly Taiwan), becomes a strong,<a href="http://www.replicamaccosmetics.net" target="_blank" class="postlink">mac cosmetics wholesale</a>, solid, durable platform into the resin, greatly improving the concrete many of the performance. If the cracks in the surface is dry, alkaline, with a single polymer impregnation and in situ polymerization, then the cracks will be filled, from the structure repaired. However, if the crack is wet, then a single polymer can not be a crack in every concrete surface is absorbed by the patch so this is not satisfactory. If a single polymer in the polymerization of volatile before the start of evaporation, then the single polymer is invalid. Collapse of law materials impregnated poly Taiwan has not been successfully applied to patch small cracks on the good offices. 5.12 Overlay layer and a surface treatment method of low-density to epoxy resin as the matrix system, has 48 * been used to seal concrete surfaces (including the very fine cracks.) This system most suitable for parts from wear and tear on the surface. Is in general use in Class I ASTMC881 viscosity of order I,<a href="http://www.discountcosmeticsmac.com" target="_blank" class="postlink">discount cosmetics mac</a>, Ⅱ or Ⅲ type 17N25 solvent epoxy resin system. Effectiveness of these materials has not been fully established. Bridge and parking lot and interior of the floor plate, the original epoxy coating can be an effective overlay. This approach should be included in Part One uncured resin material of the withdrawal of cloth. This method includes procedures and ASTMC881 ACI503.3 process. Still fine with the board and the bridge deck cracks, available polymer-modified, Portland cement concrete or mortar to repair the overlay layer. The road bridge has been successfully used the minimum thickness of 38mm Overlay. Polymers suitable for this purpose are styrene, butadiene latex, polypropylene non-re-lipid emulsion of polyvinyl acetate (non-reemulsifiablepoly-vinylacetate), and certain water-soluble epoxy resin system handle. The handle should be at least as Portland cement solid resin weight of 15%, usually 20% of the weight of mud never the best value. Before the overlay, the surface should be cleaned to remove laitance,<a href="http://www.polooutletonline.org" target="_blank" class="postlink">polo outlet online</a>, sulfate or polluting substances, such as grease or oil side. 5.15 a legitimate means automatically called \elements in the calcium hydroxide slurry is the role of carbon dioxide occurred carbonation,<a href="http://www.mac-cosmeticswholesales.com/" target="_blank" class="postlink">mac cosmetics wholesale</a>, carbon dioxide is present in the surrounding air and water. calcium carbonate and calcium hydroxide crystals in the cracks within the sediment, accumulation and growth. crystal cross decomposition, to produce a the role of mechanical bond, was between the adjacent crystal and crystal with the cement paste and aggregate are added between the chemical bond. Results section of the concrete in the tensile strength across the crack has been some recovery, while the crack is into a closed. 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