Basalt prod­ucts

The JÄGER Group devel­ops ver­sa­tile solu­tions from basalt

Chal­lenge

No plas­tic mate­r­i­al desired in hydraulic engi­neer­ing

Reli­able scour pro­tec­tion from sus­tain­able raw mate­ri­als sought

Solu­tion must meet high off­shore require­ments

Solu­tion

Inno­v­a­tive solu­tion made of basalt fiber

Plan­ning and imple­men­ta­tion from one source

Exten­sive tests at home and abroad

Result

Envi­ron­men­tal­ly friend­ly alter­na­tive to plas­tic scour pro­tec­tion

Robust basalt prod­ucts for off­shore struc­tures

Mod­u­lar solu­tion: from the pure prod­uct to the com­plete ser­vice

Want­ed: Alter­na­tive to syn­thet­ic fibers for water con­struc­tion

Nets and bags filled with stones or sand pro­tect struc­tures in the open sea — such as off­shore wind tur­bines — from being washed out or weigh down sub­ma­rine cables and pipelines.

The con­struc­tion of off­shore wind farms is chal­leng­ing due to harsh envi­ron­men­tal con­di­tions. In the mid­dle of the sea, wind tur­bine foun­da­tions and off­shore high-volt­age sta­tions are installed. Prod­ucts for scour pro­tec­tion and sub­ma­rine cable cov­ers in par­tic­u­lar must not only be durable, but must also under­go numer­ous lift­ing cycles from fill­ing with stones to pre­cise place­ment under water.

The cus­tomer from the hydraulic engi­neer­ing sec­tor was look­ing for an envi­ron­men­tal­ly friend­ly scour pro­tec­tion as an alter­na­tive to exist­ing sys­tems. Up to now there are sim­i­lar prod­ucts made of plas­tic, which are no longer an alter­na­tive for hydraulic engi­neer­ing in the long term due to the intro­duc­tion of microplas­tic into the oceans. The cus­tomer turned to Jaeger Mare Solu­tions GmbH, which has already made a name for itself in the indus­try with its inno­v­a­tive basalt bags as cable pro­tec­tion on off­shore wind tur­bines, with the request for a sus­tain­able solu­tion.

Solu­tion

Jäger weaves ten­der bonds!

Stones are the answer! The nets are not only filled with stones, but also con­sist of stone. Or bet­ter said of basalt, which is processed into fiber

In Ger­many, nets made of basalt fiber with an asso­ci­at­ed pro­tec­tive lay­er are woven for sus­tain­able scour pro­tec­tion. The mate­r­i­al is test­ed with­in the Jäger Group and the basalt net is sub­ject­ed to reg­u­lar 100% inspec­tions on land. Dur­ing the test of the net, the fill­ing with eight tons, which can be done both on land and at sea, and the sub­se­quent han­dling have to be checked. For this pur­pose, the experts of Jaeger Mare Solu­tions coor­di­nate close­ly with the client.

After the test in Ger­many we went on to the on-site test. Togeth­er with the cus­tomer, exten­sive tests were car­ried out in Tai­wan. The nets are close­ly inspect­ed dur­ing fill­ing, stor­age, load­ing onto trans­port vehi­cles and ships, and unload­ing in water. After the filled nets have met the safe­ty require­ments over sev­er­al test days, the way is paved for envi­ron­men­tal­ly friend­ly hydraulic engi­neer­ing!

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Jaeger Mare Solu­tions not only pro­duces nets from the inno­v­a­tive basalt yarn, but also basalt bags. The basalt bags have already been in use in hydraulic engi­neer­ing since 2019. They can be filled with sand as well as with stones up to four tons. Both basalt prod­ucts can be installed as scour pro­tec­tion around the piles of off­shore wind tur­bines. They are also used to fix and sta­bi­lize sub­ma­rine cables or as bank rein­force­ment for inland waters.

Fur­ther basalt prod­ucts are cur­rent­ly being test­ed.

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