
Gravel, concrete and recycled building materials for the Zurich Wine Country – including transports, landfilling as well as demolition and earthworks
Kies- & Betonwerk Frei AG
Kleinandelfingen · MarthalenNew on Amplifa
Who we are
Kies- & Betonwerk Frei AG, based in Kleinandelfingen, supplies the Zurich Wine Country and adjacent areas with gravel, concrete and other building materials and components. The company specialises in demolition and earthworks and operates its own recycling site with a crushing plant for construction debris processing in Marthalen. The landfill operation in Marthalen also includes sludge disposal using a sludge press as well as the proper treatment of neophytes. At the Kleinandelfingen site, a modern concrete plant with silo feeding, a gravel processing plant including a screening plant and a gravel pick-up point for collection customers are available. The company's own truck fleet with truck mixers handles material deliveries and transports. The company, which grew out of the Frei family's gravel business, has been part of the Winterthur-based Toggenburger AG since 2012.
- Site
- Kleinandelfingen
- Processes
- Gravel extraction and gravel processing, Concrete production, Transports & landfilling, Recycling / construction debris processing, Demolition & earthworks, Sludge disposal / sludge pressing, Treatment of neophytes, Screening (screening plant)
- Materials
- Gravel, Sand (including play sand), Concrete, Construction debris, Misapor
- Founded
- 1991 (AG-G
- Industries
- Construction industry, Civil engineering, Recycling/Waste disposal
- 01
Gravel extraction
- 02
Gravel processing and screening
- 03
Concrete production
- 04
Transports with truck fleet and truck mixers
- 05
Recycling and construction debris processing
- 06
Landfilling, sludge disposal, demolition and earthworks
Building Materials & Processes
Gravel
Main raw material for processing, delivery and concrete production in the Zurich Wine Country.
Sand (including play sand)
Is also supplied to private customers during regular play sand campaigns.
Concrete
Produced at the Kleinandelfingen site in computer-controlled concrete plants and delivered by truck mixer.
Construction debris
Is crushed at the Marthalen recycling site and processed into recycled building materials.
Misapor
Foamed glass aggregate as a building material component in the product range.
Locations

Kleinandelfingen
CHGravel & concrete plant, dispatch, office
- Materials
- Gravel, sand, concrete
- Computer-controlled concrete plant (2010)
- Gravel processing plant
- Screening plant
- Silo feeding with feed chute and conveyor belt system (2023)
- Sludge press (2020)
- Gravel pick-up point
- Truck mixers
- Truck fleet

Marthalen
CHRecycling site: recycling, landfill operation, sludge disposal, neophyte treatment
- Materials
- Construction debris, gravel, sand
- Crushing plant (2015)
- Screening plant (2022)
- Sludge press
Building Materials & Products




Inside the production







Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Gravel extraction and gravel processingCasting | – | – | – | – | Gravel, Sand |
| Concrete productionCasting | – | – | – | – | Concrete |
| Transports & landfillingOther | – | – | – | – | – |
| Recycling / construction debris processingOther | – | – | – | – | Construction debris |
| Demolition & earthworksOther | – | – | – | – | – |
| Sludge disposal / sludge pressingOther | – | – | – | – | Sludge, Wash water |
| Treatment of neophytesOther | – | – | – | – | – |
| Screening (screening plant)Other | – | – | – | – | Gravel, Sand, Construction debris |
| Crushing (crushing plant)Other | – | – | – | – | Construction debris |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Concrete plant (computer-controlled) | – | – | – | 1992 | Kleinandelfingen |
| Concrete plant (new) | – | – | – | 2010 | Kleinandelfingen |
| Gravel processing plant | – | – | – | 1966 | Kleinandelfingen |
| Rod mill | – | – | – | 1966 | Kleinandelfingen |
| Sludge press | – | – | – | 2020 | Kleinandelfingen |
| Screening plant | – | – | – | 2022 | Marthalen |
| Crushing plant (construction debris processing) | – | – | – | 2015 | Marthalen |
| Silo feeding with feed chute and conveyor belt system | – | – | – | 2023 | Kleinandelfingen |
| Truck mixer | – | – | – | – | Kleinandelfingen |
| Truck fleet | – | – | – | – | – |
Additional services
History
- 1940er
Hans Frei senior starts the gravel business; first gravel pit in the Wehri in Andelfingen.
- 1949–1954
Hans Frei junior works in the family business; in addition, a farm and the Kreuzstrasse restaurant in Humlikon.
- um 1963
Hans and Klara Frei-Hold are killed in a plane crash; Hans Frei junior and Elsa Frei-Saller take over the business with 9 employees.
- 1966
New gravel processing plant at today's site.
- 1970
First concrete plant and rod mill built.
- 1979
Commissioning of the storage hall with workshop.
- 1989
Construction and operation of a sludge press.
- 1991
Founding of Kies & Betonwerk Frei AG (formerly Hans Frei, Kreuzstrasse, Humlikon).
- 1992
Inauguration of the computer-controlled concrete plant.
- 2005
Groundbreaking for new office and workshop building in Kleinandelfingen.
- 2006
Katharina & Gerold Mändli-Frei take over the company (approx. 25 employees); Hans Frei dies shortly after the handover.
- 2007
Material deliveries and transports for the mini-motorway Kleinandelfingen–Schaffhausen (over 5 years).
- 2010
Inauguration of the new concrete plant.
- 2012
Sale to the Winterthur family company Toggenburger AG.
- 2013
Urs Berger becomes plant manager; demolition of the disused gravel plant; conversion of the old concrete plant into a gravel pick-up point.
- 2014/2015
Construction of the recycling site in Marthalen with new crushing plant for construction debris processing.
- 2016
Inauguration of the recycling site in Marthalen.
- 2020
New construction of sludge press (overhauled press from the dismantled gravel plant, wash water treatment).
- 2022
Delivery of the new screening plant.
- 2023
Construction of the new silo feeding system of the concrete plant (feed chute and conveyor belt system).