# Concrete (technology)

internal name `concrete` · tier 0 (Automation science pack, [tier 0](https://factorio.kalzumeus.com/tier/0.md))
HTML page: https://factorio.kalzumeus.com/tech/concrete/

## Cost

24 units of (1 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 30 s each.

## Requires (2)

- [Assembly](https://factorio.kalzumeus.com/tech/automation.md)
- [Crusher](https://factorio.kalzumeus.com/tech/crusher.md)

## Leads to (2)

- [Acetylene](https://factorio.kalzumeus.com/tech/acetylene.md)
- [Tar processing](https://factorio.kalzumeus.com/tech/tar-processing.md)

## Unlocks (5 recipes)

### Concrete (`concrete`)

- 0.5 s · tier 0
- Ingredients: 5 × [Lime](https://factorio.kalzumeus.com/item/lime.md), 10 × [Sand](https://factorio.kalzumeus.com/item/sand.md), 10 × [Gravel](https://factorio.kalzumeus.com/item/gravel.md), 100 × [Water](https://factorio.kalzumeus.com/fluid/water.md)
- Results: 5 × [Concrete](https://factorio.kalzumeus.com/item/concrete.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04
- Unlocked by: [Concrete](https://factorio.kalzumeus.com/tech/concrete.md)

### Hazard concrete (`hazard-concrete`)

- 0.25 s · tier 0
- Ingredients: 10 × [Concrete](https://factorio.kalzumeus.com/item/concrete.md)
- Results: 10 × [Hazard concrete](https://factorio.kalzumeus.com/item/hazard-concrete.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion,  (flying)
- Unlocked by: [Concrete](https://factorio.kalzumeus.com/tech/concrete.md)

### Lime (`lime`)

- 5 s · tier 0 · productivity modules allowed
- Ingredients: 15 × [Coke](https://factorio.kalzumeus.com/item/coke.md), 10 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md)
- Results: 10 × [Lime](https://factorio.kalzumeus.com/item/lime.md), 100 × [Carbon dioxide](https://factorio.kalzumeus.com/fluid/carbon-dioxide.md)
- Made in: High pressure furnace MK 01, High pressure furnace MK 02, High pressure furnace MK 03, High pressure furnace MK 04
- Unlocked by: [Concrete](https://factorio.kalzumeus.com/tech/concrete.md)

### Refined concrete (`refined-concrete`)

- 15 s · tier 0
- Ingredients: 5 × [Concrete](https://factorio.kalzumeus.com/item/concrete.md), 8 × [Iron stick](https://factorio.kalzumeus.com/item/iron-stick.md), 1 × [Steel plate](https://factorio.kalzumeus.com/item/steel-plate.md), 100 × [Water](https://factorio.kalzumeus.com/fluid/water.md)
- Results: 10 × [Refined concrete](https://factorio.kalzumeus.com/item/refined-concrete.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04
- Unlocked by: [Concrete](https://factorio.kalzumeus.com/tech/concrete.md)

### Refined hazard concrete (`refined-hazard-concrete`)

- 0.25 s · tier 0
- Ingredients: 10 × [Refined concrete](https://factorio.kalzumeus.com/item/refined-concrete.md)
- Results: 10 × [Refined hazard concrete](https://factorio.kalzumeus.com/item/refined-hazard-concrete.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion,  (flying)
- Unlocked by: [Concrete](https://factorio.kalzumeus.com/tech/concrete.md)