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Issue 02/2019

Tried and tested and precast concrete trends

OTTO QUAST is specialized in turnkey construction. For this purpose, the facility at the headquarters in Freudenberg supplies precast concrete elements of high quality. But the company based in the...

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Issue 02/2019

Semi-finished part for production of a concrete double-wall element

(10) DE 20 2018 105 793 U1(22) 10.10.2018(45) 13.12.2018(57) Halbzeug (9) zur Herstellung eines Be­ton-Doppelwandelements (1),wobei das Halbzeug (9) eine ausgehärtete, flächige Betonschale (2a) sowie...

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Issue 02/2019

Composite panel with lightweight concrete

(10) DE 20 2018 105 725 U1(22) 05.10.2018(45) 20.12.2018(57) Verbundplatte (1) zur Verlegung als Bodenbelag oder Pflaster in ungebundener Bauweise, ins­besondere im Freien, wobei die Verbundplatte (1)...

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Issue 02/2019

Preform for the production of loaded reinforced concrete beams

(10) DE 11 2016 005 118 T5(43) 13.12.2018(57) Die Erfindung betrifft das Bauwe­sen, insbesondere, die Fertigung der Träger für industriel­le und Zivilbauten sowie der Bauelemente, darunter...

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Issue 02/2019

Transport anchor

(10) DE 10 2017 210 761 Al(22) 27.06.2017(43) 27.12.2018(57) Die Erfindung betrifft ein Trans­portankersystem zum Transportieren eines Objekts 1, ins­besondere Betonfertigteil, umfassend ein...

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Issue 02/2019

Method and device for the manufacture of precast prestressed concrete elements

(10) DE 10 2017 125 152 Al(22) 26.10.2017(43) 27.12.2018(57) Die Erfin-dung betrifft ein Verfah­ren und eine Vorrichtung zur Herstellung von Spannbe­tonfertigteilen, welche eingegossene oder...

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Issue 02/2019 Concrete engineering

Sprayable, structurally dense lightweight concrete

Cement-aggregate mixtures have been sprayed for well over 100 years [1]. Developments in process and concrete engineering made since that time enable shotcretes to be processed re-liably today in both...

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Issue 02/2019

Surface-modified glassfibers for reinforcing concrete and method for its manufacture

(10) DE 10 2017 113 205 Al(22) 15.06.2017(43) 20.12.2018(57) Die Erfindung bezieht sich auf die Gebiete der Chemie und des Bauwesens und betrifft oberflächenmodifizierte Glasfasern zur...

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Issue 02/2019 DWA rules and guidelines governing the condition assessment of sewers

Preventing losses to the national economy – precision measurements in sewers

CCTV inspections of pipelines are carried out to detect defects in pipes, including cracks, in order to ensure compliance of sewers with relevant specifications. Any cracks larger than so-called (up...

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Issue 02/2019 Introduction of DIN 4109 by building authorities of German Federal States

New recommendations regarding increased sound insulation according to DIN 4109-5

Sound insulation is an essential requirement on buildings imposed by building rules and regulations; therefore, the highest building authorities of the German Federal States publish technical...

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