Process information
| Key Data Set Information | |
| Location | EU-27 |
| Geographical representativeness description | European Union |
| Reference year | 2023 |
| Name |
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| Use advice for data set | Plan blocks with integrated thermal insulation are used as unproven building blocks for masonry, monolithic, load-bearing and non-load-bearing exterior walls. The standard formats for these blocks feature wall thicknesses of 36.5 cm and 42.5 cm. |
| Technical purpose of product or process | Plan blocks with integrated thermal insulation are used as unproven building blocks for masonry, monolithic, load-bearing and non-load-bearing exterior walls. The standard formats for these blocks feature wall thicknesses of 36.5 cm and 42.5 cm. |
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| General comment on data set | This is a specific EPD describing KLB Isostar blocks; an unreinforced component with integrated insulation; manufactured from lightweight aggregate concrete block (LAC block) in various formats and sizes. LAC block consists of natural aggregates, water, and hydraulic binders (cement). The product described here, with gross density classes ranging from 0.40 to 0.60 g/cm³ (400–600 kg/m³), represents all backfilled, lightweight plane blocks of this type manufactured at the plant. Composition of product is available in the following table: MaterialValueUnitCement17%Washed pumice 75%Wood fiber insulation boards4%Water4% Technical data of the product is available in the following table: Technical PropertyValues/ClassesStrength Classes (MPa)2, 4Bulk Density Classes (g/cm³)0.40, 0.45, 0.50, 0.55, 0,60Thermal Conductivity (W/mK)0.08, 0.09, 0.10, 0.11 Fire ProtectionF30Sound Insulation Dimension (db)≥45General Building Authority Approval Z-17.23-1287, Z-17.23-1288 All primary data were collected by KLB Klimaleichtblock GmbH for the reference year of 2023. For the data, which the manufacturer does not influence, generic data was used. Secondary data were sourced from the regularly updated Ecoinvent database (version 3.6), aligning with EN 15804 standards to ensure background data not exceeding 10 years. ReTHiNK EPD web application was used to model the life cycle for the production and disposal of the declared product systems. To ensure that the results are comparable, consistent background data from the international database Ecoinvent was used in the LCA (e.g., data records on energy, transport, auxiliary materials, and supplies). Almost all consistent data sets contained in the Ecoinvent database are documented and can be viewed online. The scenarios included are currently in use and are representative for one of the most likely scenario alternatives. According to the criteria of the "UN Environmental Global Guidance on LCA database development" mentioned in EN 15804+A2, the data quality for all three representativeness categories (geographical, technical and time) can be described as good. A payload factor of 50 percent was used for all truck transports, which in fact corresponds to a full delivery and empty return trip. A data set for a non-specific truck was used. The demolition process for end-of-life products is assumed to be based on data from the National Milieudatabase (NMD) in the Netherlands. According to the NMD, a hydraulic excavator is capable of breaking 9.8 tons of concrete per hour and moving 8.3 tons of concrete per hour. The waste scenario for this LCA was determined based on NMD ID 9, which relates to concrete (i.a. elements, brickwork, reinforced concrete). According to this standard, the waste treatment process comprises 99% recycling and 1 % landfill. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
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| Biogenic carbon content | |
| Time representativeness | |
| Data set valid until | 2030 |
| Time representativeness description | All primary data were collected by KLB Klimaleichtblock GmbH for the period January – December 2023. |
| Technological representativeness | |
| Technology description including background system | This is a specific EPD describing KLB Isostar blocks; an unreinforced component with integrated insulation; manufactured from lightweight aggregate concrete block (LAC block) in various formats and sizes. LAC block consists of natural aggregates, water, and hydraulic binders (cement). The product described here, with gross density classes ranging from 0.40 to 0.60 g/cm³ (400– 600 kg/m³), represents all backfilled, lightweight plane blocks of this type manufactured at the plant. The manufacturing operations are carried out across two production locations, each contributing equally to production (50%). These locations include: GEBR. ZIEGLOWSKI GMBH & CO. KG, located at Waldstraße 17, 56642 Kruft, Germany. Bisotherm GmbH, located at Eisenbahnstr. 12, 56218, Mülheim-Kärlich, Germany. Below is a summary of the manufacturing process: -Cement is added to natural lightweight aggregates (pumice). -Aggregates are stored in silos or in the open air, depending on type. -Binder and additives are stored in silos -Aggregates are dosed and premixed dry with binder. -The mixture is combined with water to form lightweight concrete. -Recycled water from the factory's water treatment plant is used. -Lightweight concrete mass is filled into steel block molds. -Cores for slots or chambers are given to molds as needed. -Blocks are compacted and released using load and vibration. -Demolded bricks are loaded onto pallets. -Bricks are transported to dry high-bay warehouse for hardening (24-36 hours). -Filling the cavities with thermal insulation material; -Bricks are packed for commissioning after reaching sufficient strength. -Fully cured in weatherproof packaging for at least 28 days. -Delivered to construction site |
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Modelling and validation
Administrative information
Environmental indicators