ForMatter/Finishes/stone_finish/Photographic concrete (cure-retardant printed)
finish_concrete_photographic

Photographic concrete (cure-retardant printed)

stone_finish · textured · photo-engraved concrete, photo-printed concrete, graphic concrete, image-printed concrete panel, Eberswalde concrete
mediumlast updated 2026-04-28

Concrete panels with photographs (or any halftone image) rendered in their surface texture. The trick: a cure-retardant chemical is silkscreen-printed onto the formwork in the dark areas of an image. When the concrete cures, the retarder slows setting under those zones. After demoulding, the panel is washed — fully cured zones stay smooth, retarder zones wash away to expose the aggregate underneath. The image appears as a halftone in concrete texture, not as ink. Canonical example: Herzog & de Meuron's Eberswalde Technical School Library (1999) and the Dominus Winery (Yountville, CA, 1998); the contemporary commercial product is GRAPHIC CONCRETE (Finnish, used widely in Europe since c.2000).

Surface-retarder differential-set technique. A sugar-based or borate-based cure-retarder is screen-printed onto the formwork (usually a phenolic plywood or steel form face) in the negative of a halftone image — retarder where the dark-aggregate texture is wanted, blank where the smooth cement-paste skin should remain. Concrete is poured against the prepared formwork. The retarder diffuses into the top ~1–3 mm of the slurry against it and locally inhibits the cement hydration reaction; the rest of the panel cures normally. After 18–48 hours the formwork is struck and the panel is power-washed at 100–500 bar — the unretarded skin stays bonded; the retarded skin washes off, revealing the aggregate beneath. Typical retardation depth 1–5 mm; dot resolution 0.5–2 mm depending on screen mesh and aggregate size. The result is a permanently-rendered halftone image in the concrete surface, weather-resistant for the life of the panel. Modern commercial systems (GRAPHIC CONCRETE, Reckli) supply pre-printed retarder films as a roll product.

character — halftone-image concrete, photograph dissolved into aggregate texture, soft architectural-graphic register.

Finish properties

  • leveltextured
  • subcategorydifferential set / surface-retarder concrete halftone
  • Ra (µm)5
  • applies tostone

Incompatibilities

  • Self-consolidating concrete with very fine aggregate — the aggregate exposure is too subtle to read as image
  • Pigmented concrete where the cement-paste color matches the aggregate — the halftone vanishes
Jacques Herzog (living — quote)

The pencil of nature (that is what Fox Talbot called photography) would also become the pencil of architecture.

Jacques Herzog (b. 1950, founding partner Herzog & de Meuron, Basel), as quoted in Forty, *Concrete and Culture: A Material History* (Reaktion Books, 2012), Chapter 2, footnote 26. Herzog is describing his interest in concrete surfaces that record their environment — moss, lichen, weather, and (at Eberswalde) screen-printed photographic halftones — as the material analogue of Fox Talbot's photographic plate.
Thomas Schröpfer (living — quote)

Herzog & de Meuron's Eberswalde Technical School Library engages with the process of concrete's transition from liquid to solid with the use of cure-retardant.

Schröpfer, *Material Design: Informing Architecture by Materiality* (Birkhäuser, 2011), Chapter 5, 'Modulation: Transformation by Shaping and Texturing,' on the Eberswalde Library (1999). Schröpfer frames the photo-printed concrete as encoding additional information into the wet-to-cured material transition itself.
Adrian Forty (living — quote)

A concrete structure is very like a photograph.

Forty, *Concrete and Culture: A Material History* (Reaktion Books, 2012), Chapter 9, 'Concrete and Photography.' Forty argues a deep affinity: both media were invented in the 1830s, both perfected in the late 1880s, and both rely on a negative-positive process — a photograph is a positive printed from a previously exposed negative; a concrete cast is a positive formed from a previously constructed mould. The Eberswalde-style screen-printed cure-retardant photographic concrete is the literal collapse of the two processes into one.
Pairs with materials
Portland Cement Concrete

Second life

reversibilityzero on the existing stone — texture is geometric, present in the substrate. Re-finishing requires removing material to reach a different finish.
blocks substrate recyclingno
renewabilitymoderate — most stone finishes can be re-applied (re-honing, re-flaming) at the cost of minor material loss; field-renewability for indoor surfaces, shop-renewability for outdoor.

Marble Institute of America / Natural Stone Institute care-and-finish guides; ASTM C1242 dimension stone terminology.

Citations

  • url · https://en.wikipedia.org/wiki/Eberswalde_University_for_Sustainable_Development
  • url · https://www.graphicconcrete.com/
  • url · https://www.reckli.com/en
  • book · Schröpfer, *Material Design: Informing Architecture by Materiality* (Birkhäuser, 2011), Chapter 5 — Eberswalde Library cure-retardant photographic concrete as the canonical demonstration of encoding information into the concrete-cure process.
  • book · Forty, *Concrete and Culture: A Material History* (Reaktion Books, 2012), Chapter 2 — the Herzog 'pencil of architecture' interview source for the photographic-surface lineage that lands on Eberswalde.
  • book · Forty, *Concrete and Culture: A Material History* (Reaktion Books, 2012), Chapter 9, 'Concrete and Photography' — the canonical theoretical analysis of the negative-positive process shared by photography and concrete casting, both invented in the 1830s and perfected in the late 1880s.

Further reading