Cement, lime, ready-mixed concrete, precast concrete elements and gravel & sand from over 50 locations
Märker Holding GmbH
Harburg (Swabia) · Lauffen am Neckar · Neuburg/Donau · Ansbach-Brodswinden · Arnstadt · Hurlach · Herrlingen as well as further ready-mixed concrete and gravel locationsNew on Amplifa
About Märker
The Märker Group is an independent family business founded in 1889, headquartered in Harburg (Swabia) with over 50 locations in southern Germany. The company produces cement (CEM I, CEM II, CEM III), lump lime, fine white lime and white lime hydrate, ready-mixed concrete, large-format precast concrete elements as well as gravel and sand products and binder mix products for soil stabilization, road construction and plasters/mortars. The value chain extends from its own raw material extraction in the quarry through processing, burning, grinding and mixing to structural design planning, in-house formwork construction, concrete testing in its own laboratory and installation of the precast elements. Customers come from the construction industry, residential, commercial and industrial construction as well as civil and road engineering. The raw materials Jura limestone, gravel, sand and blast furnace slag or trass are also created as recycled aggregates (Märker_R); almost all concrete locations are CSC-certified, with the cement and lime works certified in Gold.
- Site
- Harburg (Swabia)
- Processes
- Cement production (CEM I, CEM II, CEM III and cements for special applications), Lime production (lump lime, fine white lime, white lime hydrate), Ready-mixed concrete production, Precast concrete element production (floor slabs, wall elements, stair elements, balconies &, Production of binder mix products (soil stabilization, road construction, plasters and masonry, Gravel and sand production (washing, classifying, crushing into chippings), Concrete testing in the in-house concrete testing laboratory, Raw material extraction in the quarry (blasting, crushing, transport)
- Materials
- Portland cement CEM I, Portland composite cement CEM II, Blast furnace cement CEM III, Limestone, Lump lime (calcium oxide), White lime hydrate, Trass lime (hydraulic lime), Concrete
- Certificates
- DIN EN ISO 9001, DIN EN ISO 50001 (energy management, lime/cement/ready-mixed concrete), DIN EN ISO 14001 (environmental management), CSC certification Gold (Concrete Sustainability Council)
- Founded
- 1889
- Industries
- Construction industry, Industry, Building construction (residential, commercial, industrial construction), Civil and road engineering
- 01
Raw material extraction in the quarry (blasting, crushing, transport)
- 02
Processing/comminution (roller crusher, raw mill)
- 03
Burning (shaft kiln lime, rotary kiln cement)
- 04
Grinding and cooling
- 05
Mixing (special binders, plasters, mortars, ready-mixed concrete)
- 06
Concrete testing laboratory and quality assurance
- 07
Precast element production with in-house formwork construction
- 08
Structural design planning, assembly/installation
- 09
Logistics (silo tanker trailers, bagged goods, big bags, drums)
Materials and Processes
Portland cement (CEM I 52,5 N/R and others)
For concrete, reinforced concrete and prestressed concrete according to DIN EN 206-1 as well as precast concrete elements and industrial floors.
Portland composite cement (e.g. Portland limestone cement CEM II/A-LL)
Cements produced with Jura limestone flour or blast furnace slag flour for concrete, screed and base layers.
Blast furnace cement
CEM III/A 42,5 N LH (na) and CEM III/B 42,5 L LH/SR for concrete with increased requirements regarding heat development and sulfate resistance.
Lump lime (calcium oxide)
Lime burned in shaft kilns at 900–1,200 °C for industrial applications and flue gas cleaning.
White lime hydrate and fine white lime
Fine-grain products (fine white lime < 0.5 mm) for plasters, mortars and various industrial applications.
Trass lime (hydraulic lime)
Hydraulic lime HL 5 or HL 5-HS for restorations, natural building methods and masonry.
Ready-mixed concrete
Concrete mixed in precisely controlled plants, also with recycled aggregates (Märker_R), including CO2-reduced variants (Märker_Eco).
Limestone aggregate, gravel and sand
Washed and classified aggregates for concrete, screed, mortar, asphalt and frost protection layers.
Locations
Harburg (Swabia)
DEHeadquarters, cement works, lime works, visitor center
- Materials
- Jura limestone, clinker, lump lime, white lime hydrate
- Rotary kiln Kiln 8 (61 m, Ø 4.2 m, 1,450 °C)
- Calcinator (120 m, 4.5 m Ø)
- Preheater tower (118 m, 5 cyclone stages)
- Raw mill up to 250 t/h
- 4 ball mills
- Reciprocating grate cooler
- SCR system
- 2 shaft kilns
- Grinding plant for fine white lime
- Slaking and mixing plant
- 700 m pipe belt conveyor
Lauffen am Neckar
DECement grinding plant
- Materials
- CEM II cements
- Ball mills
- Mixing plant technology
Neuburg/Donau
DEPrecast concrete plant
- Materials
- Concrete, fiber concrete
- Precast element production facilities
- in-house formwork construction
- Concrete testing laboratory
Ansbach-Brodswinden
DEPrecast concrete plant
- Materials
- Concrete, fiber concrete
- Precast element production facilities
- Formwork construction
- Concrete testing laboratory
Arnstadt
DEGravel and sand site
- Materials
- Gravel, sand, chippings
Hurlach
DEGravel and sand site
- Materials
- Gravel, sand, chippings
Herrlingen
DELime works
- Materials
- Lump lime, fine white lime
Ansbach, Nuremberg, Unterrödel, Aalen-Fachsenfeld, Asbach-Bäumenheim, Burgheim
DECSC-certified ready-mixed concrete plants
- Materials
- Ready-mixed concrete incl. recycled aggregates
- Ready-mixed concrete plants with precisely controlled mixing processes
Asbach-Bäumenheim
DEGravel and sand site
- Materials
- Gravel, sand, chippings
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Cement production (CEM I, CEM II, CEM III and cements for special applications)Engineering | – | – | – | – | Portland cement clinker, Jura limestone flour, blast furnace slag flour, trass flour |
| Lime production (lump lime, fine white lime, white lime hydrate)Engineering | – | – | – | – | Limestone (CaCO3), Calcium oxide (CaO), White lime hydrate (Ca(OH)2) |
| Ready-mixed concrete productionCasting | – | – | – | – | Concrete, gravel, sand, recycled aggregates |
| Precast concrete element production (floor slabs, wall elements, stair elements, balconies &Casting | – | – | – | – | Concrete, fiber concrete |
| Production of binder mix products (soil stabilization, road construction, plasters and masonryEngineering | – | – | – | – | Duosoilit, Soilit, Multisoilit, Asphaltolit, trass lime, plaster and masonry binder MC5, Geolit |
| Gravel and sand production (washing, classifying, crushing into chippings)Engineering | – | – | – | – | Gravel, sand, chippings, Suevit |
| Concrete testing in the in-house concrete testing laboratoryTesting | – | – | – | – | Concrete |
| Raw material extraction in the quarry (blasting, crushing, transport)Engineering | – | – | – | – | Jura limestone, raw material for cement |
22 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Rotary kiln | Märker Kiln 8 | 1 | 61 m long, Ø 4.2 m; 1,450 °C | – | Harburg plant |
| Calcinator | Märker | 1 | 120 m long, 4.5 m diameter; 900 °C | – | Harburg plant |
| Preheater tower | – | 1 | 118 m high, 5 cyclone stages | – | Harburg plant |
| Raw mill (grinding plant) | – | 1 | Capacity up to 250 t/h | – | Harburg plant |
| Ball mill | – | 4 | – | – | Harburg plant |
| Reciprocating grate cooler | – | 1 | Clinker cooling to 60 °C | – | Harburg plant |
| SCR system (exhaust gas cleaning) | – | 1 | almost 30 m high, 2 tower pairs | – | Harburg plant |
| Shaft kiln | – | 2 | 900 °C – 1,200 °C, lump lime burning | – | Harburg lime works |
| Crusher (with upstream roller screen) | – | – | Grain sizes < 120 mm | – | Bräunlesberg quarry |
| Roller crusher | – | 1 | Pre-crushing of raw material | – | Quarry |
| Secondary crusher | – | 1 | Grain sizes < 120 mm | – | Harburg lime works |
| Sand plant (drying, screening, crushing) | – | 1 | Grain sizes below 4 mm | – | Harburg lime works |
| Grinding plant (fine white lime) | – | 1 | Fine white lime < 0.5 mm | – | Harburg lime works |
| Slaking plant (white lime hydrate) | – | 1 | – | – | Harburg lime works |
| Mixing plant (special binders, plasters, mortars) | – | 1 | – | – | Harburg lime works |
| Mixing plant technology (binder mix products) | – | – | – | – | Harburg / Lauffen |
| Ready-mixed concrete plant | – | – | precisely controlled mixing processes | – | various locations |
| Concrete paving machine | Wirtgen | – | – | – | B27 construction site |
| Pipe belt conveyor | – | 1 | 700 m long | – | Harburg plant |
| Automated crane (KBS hall) | – | 1 | Homogenization of calcinator fuel | – | Harburg plant |
| Wheel loader | Cat 992 | 1 | – | 2025 | Quarry |
| Dump truck | Cat 777 | 1 | – | 2025 | Quarry |
Additional services
History
- 1889
Founded as "Dampfziegelei Stein- und Kalkwerke August Märker" (steam brickworks, stone and lime works)
- 2019
Investment in the modernization of the Harburg cement works (Kiln 8 project), replacement of the 50-year-old kiln, reduction of fuel-related CO2 emissions by approx. 60,000 t/year
- 2020
Acquisition of Wittmann Kies + Beton GmbH from Neuburg an der Donau (precast concrete elements, ready-mixed concrete, gravel & sand) retroactive to January 1, 2020
- 2022
CSC certification in Gold: Harburg cement works (September 2022) and Lauffen cement grinding plant (October 2022)
- 2024
Anton-Jaumann Innovation Award 2024 of the Junge Union Swabia
- 2026
Märker Kalk awarded for multi-year accident-free operation for the third time (7 years accident-free operation Harburg, certificate in silver)