Process information
| Key Data Set Information | |
| Location | NO |
| Geographical representativeness description | Portugal, Spain and United Kingdom |
| Reference year | 2025 |
| Name |
|
| Technical purpose of product or process | Leca® Uno is a pre-mixed lightweight aggregate with a binder. The lightweight aggregate is produced from natural clay subjected to a high-temperature thermal expansion process in a rotary kiln. This process gives the granules a highly porous internal structure and a durable external surface, combining lightness with mechanical performance and dimensional stability. The granulometric composition of Leca® Uno ensures a balanced particle distribution that enhances compaction and material stability, making it especially suitable for technical backfills and slope formation—and, when the final finish is ceramic tile, natural stone or floating flooring, it can even eliminate the need for a screed. Leca® Uno is a mineral, inert, durable and recyclable product whose production is aligned with sustainability principles and low environmental impact. The product is sold in 25 L bags, with the approximately weight of 17 Kg. In total, each pallet has 40 bags. Leca® Uno is a highly durable material with a potentially unlimited service life when properly installed and used. It is a fully recyclable and reusable product, offering 100 % recovery potential at the end of its service life and contributing to material circularity in construction. This pre-mixed aggregate is characterized by a low dry bulk density. Despite its lightness, it delivers high mechanical strength and dimensional stability. |
| General comment on data set | Data quality: Specific data for the product composition are provided by the manufacturer. The data represent the production of the declared product and were collected for EPD development in the year of study. Background data is based on EPDs according to EN 15804 and different LCA databases. The data quality of the raw materials in A1 is presented in the table below. Allocation: The allocation is made in accordance with the provisions of EN 15804+A2. Incoming energy and water and waste production in-house is allocated equally among all products through mass allocation. Effects of primary production of recycled materials is allocated to the main product in which the material was used. The recycling process and transportation of the material is allocated to this analysis. Cut-off criteria: All major raw materials and all the essential energy is included. The production processes for raw materials and energy flows with very small amounts (less than 1%) are not included. These cut-off criteria do not apply for hazardous materials and substances. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) |
|
| Biogenic carbon content |
|
| Time representativeness | |
| Data set valid until | 2030 |
| Technological representativeness | |
| Technology description including background system | Relevant technical properties for Leca® Uno: Reaction to fire (for exposed conditions): Class A1 Release of corrosive substances: CT Mechanical strength (CT classification): C5 – F2 Compressive strength classification: ≥ C5 Flexural strength classification: ≥ F2 Compressive strength at 28 days: 7.4 ± 0.6 N/mm² (7.4 ± 0.6 MPa) (Report No. ARG 032/23, ITECONS) Flexural strength at 28 days: 2.3 ± 0.6 N/mm² (2.3 ± 0.6 MPa) Fire behavior: Non-combustible (Class A1) Hardened bulk density: 826 ± 2 kg/m³ (Report No. ARG 032/23, ITECONS) Thermal conductivity of the hardened, dry mix: λ₁₀,dry = 0.2768 W/m·°C (Report No. OMH 107/18, ITECONS) Thermal resistance of the hardened, dry mix: R = 0.19 m²·°C/W |
Modelling and validation
| Subtype | specific dataset | ||||
| LCA methodology report | |||||
| Data sources, treatment and representativeness | |||||
| Documentation of data quality management | |||||
| Data source(s) used for this data set | |||||
| Completeness | |||||
| Validation | |||||
| |||||
| Compliance Declarations | |||||
| Compliance |
Compliance system name
EN 15804+A2
|
Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
| Compliance |
Compliance system name
|
Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
| Compliance |
Compliance system name
|
Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
Administrative information
| Data generator | |
| Data set generator / modeller |
|
| Data entry by | |
| Time stamp (last saved) | 2025-12-05T12:31:22 |
| Data set format(s) | |
| Publication and ownership | |
| UUID | a9ae16ed-2692-46d8-9482-2381901a11a1 |
| Date of last revision | 2025-12-03T15:28:13.762512Z |
| Data set version | 00.02.001 |
| Registration authority | |
| Registration number | NEPD-14352-14747 |
| Owner of data set | |
| Copyright | Yes |
| License type | Free of charge for all users and uses |
| Access and use restrictions | None |
Environmental indicators
Indicators of life cycle