# Heidelberg Materials > Heidelberg Materials has a real concrete-to-concrete pathway, but the evidence needs to stay regional. Its ReConcrete process separates waste concrete into sand, gravel and hardened cement paste, while the company reports 29.0 million tonnes of secondary materials in 2025 across its businesses. The right decision is one demolition stream and one region where feedstock quality, processing yield and product specification can be verified together. - Industry: Building & Infrastructure - Collection: Active - Materials: Cement, Glass, Minerals - Processes: Recycling, Sorting, Mechanical processing - Evidence through: 2026-09-18 - Canonical URL: https://www.materialtransition.com/library/heidelberg-materials ## Material inputs to resolve Cement, concrete and aggregates with circular raw materials, alternative fuels and construction recovery Heidelberg Materials 2025 reporting describes resource efficiency, co-processing of waste materials, concrete recycling, alternative fuels and secondary raw materials across its business lines. The company describes ReConcrete as a process that can separate waste concrete into sand, gravel and hardened cement paste, with the paste usable as a raw material in clinker and cement production. Public reporting does not establish one regional construction stream ledger connecting demolition source, processing yield, product specification, customer project and next-life outcome. **2,600 locations** Approximate locations in the global business **ReConcrete** Process described for separating waste concrete components **Secondary raw materials** Circularity policy focus across business lines **3D printing** Material and construction-waste reduction pathway - Limestone, clay, aggregates, water, energy, alternative fuels, waste materials and demolition concrete - Quarrying, kiln, grinding, batching, transport, construction and demolition data - Waste concrete, asphalt, glass, used tires, biomass and other qualified industrial streams ### Outputs and residuals to resolve - Cement, clinker, ready-mixed concrete, aggregates, asphalt and building systems - Construction waste, kiln residues, recovered aggregates and cement paste - Regional yield, product qualification and project-level recovered-content evidence remain open **First decision:** Choose one region and one recovered stream, such as waste concrete, asphalt or alternative raw material. Map source, processing yield, product specification, customer project and next life. ## Circularity signal Heidelberg Materials describes resource efficiency, waste co-processing and concrete recycling as core circular-economy work. #### Process signal ReConcrete separates waste concrete into sand, gravel and hardened cement paste, which can be evaluated for return to construction-material production. #### Product signal The company describes secondary raw materials and circular alternatives across cement, concrete and aggregates. #### Evidence boundary Group reporting does not establish one regional recovered-material ledger from demolition through a qualified product. ### Decision boundary The public record supports one bounded next move: Choose one region and one recovered stream, such as waste concrete, asphalt or alternative raw material. Map source, processing yield, product specification, customer project and next life. It does not establish a buyer, commercial approval or supply agreement. ## Material flow map | Material or stream | Qualification gate | Process or destination | Evidence still needed | |-|-|-|-| | Waste concrete | Source, contamination, grading and performance | Recycled aggregate or cement raw material | Input, yield, test and product allocation | | Alternative fuels and raw materials | Safety, chemistry, quality and kiln compatibility | Clinker kiln or material process | Origin, preprocessing, route and residuals | | Concrete and asphalt end of life | Collection, sorting, crushing and market demand | New concrete, aggregate or asphalt | Region, route, specification and project | This is a public screening map. It separates company-disclosed flows from open qualification work. It does not convert a destination into a buyer or an announced ambition into operating capacity. ## Three defensible entry lanes #### Make construction recovery regional The value sits in the distance, quality, demand and specification of a recovered stream. **Next evidence:** Select region, demolition source, processor, product, project and route. #### Turn ReConcrete into a sourcing record Recovered cement paste and aggregates can change raw-material demand when the quality and allocation are proven. **Next evidence:** Join source concrete, processing yield, test, clinker or concrete use and buyer. #### Connect 3D printing to material efficiency Less waste is a real benefit when the design, mix, process and project boundary are explicit. **Next evidence:** Select project, mix, geometry, material input, waste avoided and end of life. ## Evidence register - **Annual and Sustainability Reports** Heidelberg Materials, official report library https://www.heidelbergmaterials.com/en/company/annual-reports-sustainability-reports [1] - **Sustainability** Heidelberg Materials, official sustainability overview https://www.heidelbergmaterials.com/en/sustainability [2] - **2025 circularity reporting** Heidelberg Materials, official report section https://www.heidelbergmaterials.com/system/files/2026-03/HM\_ASR25\_en.pdf [3] - **ReConcrete enforced carbonation in Poland** Heidelberg Materials, official process and implementation disclosure https://www.heidelbergmaterials.com/en/pr-2025-07-09 [4] Source hierarchy: filings and company disclosures first. The brief states what those sources support and leaves the unresolved plant, grade, permit, buyer and mass-balance questions explicit. ## Material Transition editorial interpretation The next useful working session starts with: Choose one region and one recovered stream, such as waste concrete, asphalt or alternative raw material. Map source, processing yield, product specification, customer project and next life. ## Sources - [1] Annual and Sustainability Reports - https://www.heidelbergmaterials.com/en/company/annual-reports-sustainability-reports - [2] Sustainability - https://www.heidelbergmaterials.com/en/sustainability - [3] 2025 circularity reporting - https://www.heidelbergmaterials.com/system/files/2026-03/HM_ASR25_en.pdf - [4] ReConcrete enforced carbonation in Poland - https://www.heidelbergmaterials.com/en/pr-2025-07-09 From the Material Transition company brief library: https://www.materialtransition.com/library/heidelberg-materials