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TITAN Injection Anchors Al <br />Advantages of utilizing the TITAN Injection Anchors: <br />a) for cased holes <br />In applications, where the only way to stabilize the <br />hole was will) a casing, for example in weathered <br />rock, tallus, backtill areas, round gravel, sand and <br />clayey soils, the TITAN Injection Anchor has proven <br />its strength. <br />The more likely there is danger that the bore hole <br />collapses or gets misdirected by obstacles the <br />more sense the use of the TITAN anchors makes. <br />There is no need to extract the casing, smaller drill <br />rigs can be used and there are less cutlings, the <br />amount of grout is reduced. Soil friction and settle- <br />ment are much improved compared to cased holes. <br />b) approx. 25% saving for the typical „everyday <br />job" <br />Considering as an example the installation of <br />twenty 12 meter long tieback anchors in art exca- <br />vation. For such a small project equipment morw <br />lization accounts for approximately 300l6 of the total <br />cost and is practically independant of the number <br />of anchors to be installed. A reduction of these <br />fixed costs is possible only by use of our simplified <br />method of installation for anchors and soil nails. <br />Smaller equipment fits onto a small trunk or even on <br />a trailer and consequently the organization of such <br />jobs is greatly simplified. <br />c) for cramped quarters and jobs with difficult <br />access. <br />the chance to couple and extend the TITAN Mier. - <br />lion Anchor and also to use small drilling equipment <br />makes it Ideal for use within basements, under brid- <br />ges, on river Lqnks, on scaffolding, at a steep slo- <br />pe, in a backyarc, inside factories between machi- <br />nery. The space required is much less than for a <br />crawler rig which needs 6 m stabilized workspace <br />in Ironl of the anchor position. Small drilling units <br />like the Morath aluminium mast, ran be brought by <br />helicopter to nearly inaccessable (by road) alpine <br />areas. <br />Corrosion protection Systems for TITAN Injection Anchors <br />simple corrosion protection <br />for temporary anchors, micropiles, soil nails and rock bolts. <br />A minimum continuous and constant grout cover of the <br />steel of <br />20 mm in sort and <br />10 ruin in rock <br />is called simple corrosion protection. <br />In soil, the circular centralizers positioned before each <br />coupler guarantee a complete grout coverage. <br />When using pure cement grouts the advantage over <br />concrete or special mortar is, thait it has a surplus of <br />cement Even if cracks of 0,1 mm occur in the grout <br />body due to the tensile stress of the anchor there is no <br />danger of corrosion. In non-agressive soils it would <br />take centuries before carbonization would be so far <br />advanced that the ph -value at the bottom of the crack <br />would drop below 9, acc. to the Pourbaix oragram. <br />A passivalion of file steel in the area of the unbonded <br />length is not required for temporary anchors because <br />of the fine grain structural steel with a wall thickness of <br />above, A min since this steel is not sprisitive to hydro- <br />gen embrittlement. <br />On request and depending on local standards the cor- <br />rosion protection can be improved by passivating the <br />steel. <br />Combicoaling means: hot -dip galvanised plus epoxy <br />coated. <br />(presently available for TITAN 30/11 and 106 only) <br />Double Corrosion protection <br />for permanent anchors <br />Double corrosion protection for TITAN Injection <br />Anchors results from using a ferritic-austenitic steel <br />(INOX) with a chromium content of 22%, material no. <br />1.4462 for the hollo>v anchor, the coupling and the <br />spherical collar nut. <br />This stainless INOX (inoxidable) Duplex rteel has <br />scientifically been researched in Germany and in <br />long term testing In the USA. A life span of 50 years <br />and more is no problem for the TITAN INOX steel. <br />IC ?'N: <br />14 <br />