Steffen Praetorius (30 results)

Condition: As New. Unread book in perfect condition.

Condition: New.

Paperback. Condition: New. Pipe jacking is a construction process for the no-dig laying of pipes. Successful pipe jacking demands low skin friction between the ground and the jacked pipe. This is achieved with bentonite lubrication. The bentonite slurry fed into the annular gap fulfils several purposes. It stabilises the annular gap by supporting the surrounding ground and reduces friction contact between ground and jacked pipe. The Bentonite Handbook deals comprehensibly with the relevant aspects of annular gap lubrication: starting with the ground conditions, which are of decisive importance for lubrication, through the rheological properties of the bentonite slurry to the technical components of lubrication technology and lubrication strategy. The use of standardised measuring apparatus is described as well as mixing equipment and the automatic lubrication system. Overview tables with calculations and suggested values for bentonite consumption quantities depending on the prevailing ground conditions and the pipe jacking parameters complete the recommendations.…

Paperback. Condition: new. Paperback. Pipe jacking is a construction process for the no-dig laying of pipes. Successful pipe jacking demands low skin friction between the ground and the jacked pipe. This is achieved with bentonite lubrication. The bentonite slurry fed into the annular gap fulfils several purposes. It stabilises the annular gap by supporting the surrounding ground and reduces friction contact between ground and jacked pipe. The Bentonite Handbook deals comprehensibly with the relevant aspects of annular gap lubrication: starting with the ground conditions, which are of decisive importance for lubrication, through the rheological properties of the bentonite slurry to the technical components of lubrication technology and lubrication strategy. The use of standardised measuring apparatus is described as well as mixing equipment and the automatic lubrication system. Overview tables with calculations and suggested values for bentonite consumption quantities depending on the prevailing ground conditions and the pipe jacking parameters complete the recommendations. The book deals with almost all aspects of annular gap lubrication in pipe jacking - from ground conditions, through the properties of bentonite to the technical aspects. There is also a collection of calculations and suggested values for bentonite consumption quantities. . Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condition: New.

Condition: New.

Condition: As New. Unread book in perfect condition.

Condition: New. The book deals with almost all aspects of annular gap lubrication in pipe jacking - from ground conditions, through the properties of bentonite to the technical aspects. There is also a collection of calculations and suggested values for bentonite consumption quantities. . Num Pages: 228 pages. BIC Classification: TN. Category: (P) Professional & Vocational. Dimension: 174 x 242 x 16. Weight in Grams: 568. . 2017. 1st Edition. Paperback. . . . . …

Condition: New. In English.

Paperback. Condition: Brand New. 1st edition. 256 pages. 9.50x6.75x0.75 inches. In Stock.

Condition: New. The book deals with almost all aspects of annular gap lubrication in pipe jacking - from ground conditions, through the properties of bentonite to the technical aspects. There is also a collection of calculations and suggested values for bentonite consumption quantities. . Num Pages: 228 pages. BIC Classification: TN. Category: (P) Professional & Vocational. Dimension: 174 x 242 x 16. Weight in Grams: 568. . 2017. 1st Edition. Paperback. . . . . Books ship from the US and Ireland. …

Condition: New. pp. 256.

Condition: New. pp. 256.

Paperback. Condition: New. Pipe jacking is a construction process for the no-dig laying of pipes. Successful pipe jacking demands low skin friction between the ground and the jacked pipe. This is achieved with bentonite lubrication. The bentonite slurry fed into the annular gap fulfils several purposes. It stabilises the annular gap by supporting the surrounding ground and reduces friction contact between ground and jacked pipe. The Bentonite Handbook deals comprehensibly with the relevant aspects of annular gap lubrication: starting with the ground conditions, which are of decisive importance for lubrication, through the rheological properties of the bentonite slurry to the technical components of lubrication technology and lubrication strategy. The use of standardised measuring apparatus is described as well as mixing equipment and the automatic lubrication system. Overview tables with calculations and suggested values for bentonite consumption quantities depending on the prevailing ground conditions and the pipe jacking parameters complete the recommendations.…

Paperback. Condition: new. Paperback. Pipe jacking is a construction process for the no-dig laying of pipes. Successful pipe jacking demands low skin friction between the ground and the jacked pipe. This is achieved with bentonite lubrication. The bentonite slurry fed into the annular gap fulfils several purposes. It stabilises the annular gap by supporting the surrounding ground and reduces friction contact between ground and jacked pipe. The Bentonite Handbook deals comprehensibly with the relevant aspects of annular gap lubrication: starting with the ground conditions, which are of decisive importance for lubrication, through the rheological properties of the bentonite slurry to the technical components of lubrication technology and lubrication strategy. The use of standardised measuring apparatus is described as well as mixing equipment and the automatic lubrication system. Overview tables with calculations and suggested values for bentonite consumption quantities depending on the prevailing ground conditions and the pipe jacking parameters complete the recommendations. The book deals with almost all aspects of annular gap lubrication in pipe jacking - from ground conditions, through the properties of bentonite to the technical aspects. There is also a collection of calculations and suggested values for bentonite consumption quantities. . Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.…

Softcover. Condition: gut. 2017. Bentonite Handbook - Lubrication for Pipe Jacking In deutscher Sprache. pages.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Condition: As New. Unread book in perfect condition.

Condition: New.

Paperback. Condition: New. Der Rohrvortrieb ist ein Bauverfahren zur grabenloser Verlegung von Leitungen. Ein erfolgreicher Vortrieb erfordert eine geringe Mantelreibung zwischen Baugrund und Vortriebsrohr. Dies wird über eine Bentonitschmierung erreicht. Das im Ringspalt eingebrachte Bentonit erfüllt hierbei mehrere Aufgaben. Zunächst stabilisiert es den Ringspalt durch Stützung des Untergrunds und soll damit den direkten Kontakt Untergrund zu Vortriebsrohr vermeiden. Zusätzlich verringert es als Schmiermittel die Reibung zwischen Untergrund und Rohrstrang. Dieses Handbuch behandelt nahezu alle Aspekte der Ringraumschmierung. Angefangen von den für die Schmierung maßgeblichen Untergrundbedingungen, über die Eigenschaften des Bentonits bis hin zu den technischen Aspekten. Dabei sind zu nennen die Handhabung des Messequipments, der richtige Einsatz der Mischausrüstung und der Quelltanks, Details über den Einsatz des automatischen Bentonitschmiersystems sowie Berechnungen und Vorschlagswerte über Bentonitverbrauchsmengen in Abhängigkeit von Untergrund und Vortriebsmaschinengröße.…

Condition: New.

Condition: New.

Condition: New. Series: Bauingenieur-Praxis. Num Pages: 232 pages. BIC Classification: TN. Category: (P) Professional & Vocational. Dimension: 240 x 173 x 11. Weight in Grams: 248. . 2015. 1st Edition. Paperback. . . . .

Condition: As New. Unread book in perfect condition.

Condition: New. In German.

Condition: New. Series: Bauingenieur-Praxis. Num Pages: 232 pages. BIC Classification: TN. Category: (P) Professional & Vocational. Dimension: 240 x 173 x 11. Weight in Grams: 248. . 2015. 1st Edition. Paperback. . . . . Books ship from the US and Ireland.

Condition: NEW.

Condition: New. Dipl.-Geol. Steffen Praetorius ist stellvertretender Leitung Entwicklung und Forschung im Bereich Utility Tunnelling (Rohrvortriebe) der Herrenknecht AG. Dr. Britta Schoesser forscht und lehrt an der Ruhr-Universitaet Bochum am Lehrstuhl fuer Tunnelbau, Leitung.

Paperback. Condition: New. Der Rohrvortrieb ist ein Bauverfahren zur grabenloser Verlegung von Leitungen. Ein erfolgreicher Vortrieb erfordert eine geringe Mantelreibung zwischen Baugrund und Vortriebsrohr. Dies wird über eine Bentonitschmierung erreicht. Das im Ringspalt eingebrachte Bentonit erfüllt hierbei mehrere Aufgaben. Zunächst stabilisiert es den Ringspalt durch Stützung des Untergrunds und soll damit den direkten Kontakt Untergrund zu Vortriebsrohr vermeiden. Zusätzlich verringert es als Schmiermittel die Reibung zwischen Untergrund und Rohrstrang. Dieses Handbuch behandelt nahezu alle Aspekte der Ringraumschmierung. Angefangen von den für die Schmierung maßgeblichen Untergrundbedingungen, über die Eigenschaften des Bentonits bis hin zu den technischen Aspekten. Dabei sind zu nennen die Handhabung des Messequipments, der richtige Einsatz der Mischausrüstung und der Quelltanks, Details über den Einsatz des automatischen Bentonitschmiersystems sowie Berechnungen und Vorschlagswerte über Bentonitverbrauchsmengen in Abhängigkeit von Untergrund und Vortriebsmaschinengröße.…

Paperback. Condition: Brand New. 232 pages. German language. 8.43x5.85x0.73 inches. In Stock. This item is printed on demand.