
Manufacturer of ready-mixed concrete, concrete products, dry construction materials as well as gravel, sand and crushed stone with its own gravel and concrete plants.

Karl Strohmaier GmbH
Neuenburg-Grißheim · Maulburg · Kenzingen · Teningen-Nimburg · Weil am Rhein (DE) · Baldersheim · Reguisheim (FR)New on Amplifa
About Strohmaier Beton
Founded in 1964, Karl Strohmaier GmbH is a family-owned company based in Neuenburg-Grißheim (Baden-Württemberg), specialised in the processing of gravel, sand and crushed stone as well as the production of ready-mixed concrete, concrete products and dry construction materials. The company operates gravel plants, concrete plants and concrete block plants in southern Baden and in the adjacent Alsace region. Ready-mixed concrete is delivered to DIN EN 206-1 / DIN 1045-2 up to strength classes C50/60 or LC55/60 and beyond, supplemented by hydraulically bound base courses (HGT), cement-containing ready-mixed site mortars and cement flowing screeds. At the concrete block plant, paving stones, block steps, slabs, grass pavers and permeable systems such as Smart Drain Premium, Santana Drain and Rhodos Drain are produced in all exposure classes. With RECYTON®, Strohmaier offers a recycled concrete with a recipe tailored to the specific project, in which recycled aggregates, clinker-reduced cements and optionally CO₂-mineralised recyclates can be used. An in-house laboratory (quality assurance department) and a vehicle fleet for on-time deliveries complete the value chain. Customers come from building construction, civil engineering, road construction as well as landscaping and garden construction.
- Site
- Neuenburg-Grißheim
- Processes
- Ready-mixed concrete (building construction, civil engineering, road construction), Production of concrete products (paving stones, block steps, slabs, grass pavers), Production of permeable paving stones (Smart Drain Premium, Aqua Drain, Öko Drain etc.), Cement flowing screeds, Dry construction materials (silo and bag), dry concrete/mortar as bagged goods, Gravel, sand & crushed stone processing (gradations), Delivery of ready-mixed concrete according to DIN EN 206-1 / DIN 1045-2, Recycled concrete RECYTON® with project-specific recipe
- Materials
- Ready-mixed concrete, Hydraulically bound base course (HGT), Cement-containing ready-mixed site mortar/screed, Portland cement clinker, Recycled concrete RECYTON®, Gravel, Sand, Crushed stone
- Certificates
- In-house laboratory / quality assurance, ISO 9001
- Founded
- 1964
- Industries
- Construction industry, Building construction, Civil engineering, Road construction, Landscaping and garden construction, Building materials trade
- 01
Gravel extraction and processing (gravel, sand, crushed stone in various
- 02
Concrete production (ready-mixed concrete, RECYTON® recycled concrete, special
- 03
Production of concrete products (paving stones, slabs, block steps)
- 04
Dry construction materials and screed
- 05
Logistics and delivery with own vehicle fleet
- 06
Quality assurance and laboratory testing
Products & Processes
Ready-mixed concrete (DIN EN 206-1 / DIN 1045-2)
Concretes for building construction, civil engineering and road construction up to C50/60 or LC55/60 and from C55/67 or LC60/66.
Recycled concrete RECYTON®
Recycled concrete with a project-specific recipe made from recycled aggregates, clinker-reduced cements and optionally CO₂-mineralised recyclates.
Hydraulically bound base course
Cement-bound construction material for road and civil engineering.
Cement flowing screed / anhydrite or calcium sulphate screed
Screeds and ready-mixed site mortars for interior finishing.
Dry construction materials (silo and bag)
Dry concrete and mortar as bagged or big-bag goods.
Gravel, sand & crushed stone
Natural aggregates in various gradations, loose or as big-bag/bagged goods.
Locations

Neuenburg-Grißheim
DECentral administration, gravel plant, concrete plant, concrete block plant
- Materials
- Gravel, sand, crushed stone, ready-mixed concrete, concrete products
- Gravel plant
- Concrete plant
- Concrete block plant
Maulburg
DEConcrete plant
- Materials
- Ready-mixed concrete
- Concrete plant

Kenzingen
DEConcrete block plant, demonstration garden with over 230 sqm exhibition area
- Materials
- Concrete products (paving stones, slabs, block steps)
- Concrete block plant
Teningen-Nimburg
DEConcrete plant
- Materials
- Ready-mixed concrete
- Concrete plant
Baldersheim
FRGravel plant and concrete plant (Tegral)
- Materials
- Gravel, sand, crushed stone, ready-mixed concrete
- Gravel plant
- Concrete plant

Reguisheim
FRGravel plant and concrete plant (Strohmaier France)
- Materials
- Gravel, sand, crushed stone, ready-mixed concrete
- Gravel plant
- Concrete plant
Weil am Rhein
DEGravel depot (P & S Beton GmbH & Co. KG)
- Materials
- Gravel
Concrete Products



Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Ready-mixed concrete (building construction, civil engineering, road construction)Casting | – | – | – | – | Concrete according to DIN EN 206-1/DIN 1045-2, Recycled concrete RECYTON®, Special concrete |
| Production of concrete products (paving stones, block steps, slabs, grass pavers)Casting | – | – | – | – | Concrete of all exposure classes |
| Production of permeable paving stones (Smart Drain Premium, Aqua Drain, Öko Drain etc.)Casting | – | – | – | – | Concrete |
| Cement flowing screedsCasting | – | – | – | – | Cement, Anhydrite/calcium sulphate screed |
| Dry construction materials (silo and bag), dry concrete/mortar as bagged goodsCasting | – | – | – | – | Anhydrite/calcium sulphate screed, Dry concrete, Mortar |
| Gravel, sand & crushed stone processing (gradations)Other | – | – | – | – | Gravel, Sand, Crushed stone |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Gravel plant | – | – | – | – | Neuenburg-Grissheim; Baldersheim (F); Reguisheim (F) |
| Concrete plant (ready-mixed concrete) | – | – | – | – | Neuenburg-Grissheim, Maulburg, Teningen-Nimburg, Baldersheim (F), Reguisheim |
| Concrete block plant | – | – | – | – | Neuenburg-Grissheim, Kenzingen |
| Concrete truck mixer with electrically driven mixing drum | – | – | – | – | – |
Additional services
Quality
The quality assurance department of Karl Strohmaier GmbH operates its own laboratory for testing cement-bound construction materials. Concretes are produced and documented according to DIN EN 206-1 / DIN 1045-2.
| Evidence | Neuenburg-Grißheim |
|---|---|
| In-house laboratory / quality assurance | |
| ISO 9001 |
History
- 1964
The Strohmaier brothers acquire the gravel pit in Neuenburg-Grißheim – the foundation of the company
Construction of the Niederrimsingen concrete plant
Takeover of the Kenzingen concrete block plant
Establishment of the Reguisheim plant (Strohmaier France GBW)
Construction of the gravel and concrete plant Transportbeton Kiseljak (Bosnia and Herzegovina)