This (ReadMe) file was created on 2025-06-30 by TESOVNIK ANŽE ------------------- GENERAL INFORMATION ------------------- Author/leading researcher details Name and surname: Anže Tesovnik ORCID: https://orcid.org/0009-0000-4803-6246 Institution: Slovenian National Building and Civil Engineering Institute Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Email: anze.tesovnik@zag.si Role in this dataset: A collection of raw and processed data and measurements, compiled to enable access to all relevant information used in the analysis and interpretation of results. The dataset file contains measurements from macro- to micro-scale analyses of alkali-activated aggregates produced from biomass fly ash. It includes data on mechanical performance, microstructural characterization, and chemical and mineralogical composition. This dataset supports the findings presented in the article entitled "Carbonation of Lightweight Alkali-Activated Aggregates Based on Biomass Fly Ash: Effect on Microstructure and Leaching Behavior." Information about the author(s) Name and surname: Lisbeth M. Ottosen ORCID: https://orcid.org/0000-0001-7756-382X Institution: Technical University of Denmark Address: Brovej, 2800 Lyngby, Denmark Email: / Information about the author(s) Name and surname: Vilma Ducman ORCID: https://orcid.org/0000-0002-6430-3305 Institution: Slovenian National Building and Civil Engineering Institute Address: Dimićeva ulica 12, 1000 Ljubljana, Slovenia Email: vilma.ducman@zag.si Date of data collection: Geographical location of data collection: Information on the funders/programmes/projects that made the data collection possible: ----------------------------- SHARING/ACCESSING INFORMATION ----------------------------- Data licences/restrictions: Links to publications that cite or use the data: ---------------------- VIEWING DATA AND FILES ---------------------- File list: - - Description: -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of the methods used to collect/obtain the data: The experimental design and protocols used to collect the data are described in the article. ------------------------------------- DATA-SPECIFIC INFORMATION: ReaseerchData_BFA_AAM_aggregates.xlsx ------------------------------------- BFA - biomass fly ash, sample name and abbreviation of ash precursor used in article List of variables: This sheet contains the data of laser gnaulometry measurements (PSD - particle size distribution) of the biomass ash used in the study, expressed in two ways, as additionally explained abbreviations. q3 - differential distribution, the volume percentage of particles within a specific size range Q3 - cumulative distribution, the cumulative volume percentage of particles smaller than a given size This sheet contains the data of chemical compisition of the biomass ash used in the study, measured by X-ray fluorescence spectroscopy instrument (XRF). This sheet contains the data of mineralogical compisition of the biomass ash used and 28 days cured alkali-activated samples, measured by X-ray diffraction instrument (XRD). M1-AC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under Ambient Conditions (AC; 20°C, 55% relative humidity) M1-HCC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under elevated Heat and Humidity Curing (HCC; 40°C, 80% relative humidity) M1-CEC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under CO₂-Enriched Curing (CEC; 40°C and 80% relative humidity, CO₂ concentration of 4 vol%) M1-PCC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under optimised Post-Curing Carbonation (PCC; 40°C and 80% relative humidity + 40°C and 80% relative humidity, CO₂ concentration of 4 vol%) This sheet contains the data of chemical bonds and functional groups of the 28 days cured alkali-activated samples, measured by Fourier Transform Infrared spectroscopy (FTIR). M1-AC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under Ambient Conditions (AC; 20°C, 55% relative humidity) M1-HCC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under elevated Heat and Humidity Curing (HCC; 40°C, 80% relative humidity) M1-CEC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under CO₂-Enriched Curing (CEC; 40°C and 80% relative humidity, CO₂ concentration of 4 vol%) M1-PCC - Aggregates prepared according to a Mix design 1 recipe (M1), cured under optimised Post-Curing Carbonation (PCC; 40°C and 80% relative humidity + 40°C and 80% relative humidity, CO₂ concentration of 4 vol%) This sheet presents both the raw compressive force load measurements and the processed compressive-strength (CS) values for the alkali-activated test series. Summary section in upper-left presents four colour-coded tables displaying the mean CS and its standard deviation at 3, 7, 14, and 28 days for each mix design. Sample names carry the curing regime suffix — AC (ambient cured), HHC (heat and humidity cured), CEC (CO₂-enriched cured) or PCC (post-curing carbonation). Results for the PCC series of mix M1, obtained in a later testing campaign, are summarised in a separate blue-highlighted table as measurements were concluded later or optimized curing aggregates. M1 - mix design 1 (without PCC) with green shaded background M2 - mix design 2 with orange shaded background M3 - mix design 3 with purple shaded background M1 - mix design 1 of PCC samples with blue shaded background Detailed data on right-hand block with same color coding tables records the raw compressive force load and corresponding CS calculated with the formula described in the article PID. The 3d, 7d, 14d and 28d sample suffix marks the measurements with corresponding time of curing. This sheet contains the data of the water absorption (WA) and the mass of the aggregate of Mix Design 1 after 28 days of curing. The dry mass and the wet mass were measured, the water absorption was calculated according to the formula given in the article. This sheet presents the porosity data measured by Mercury intrusion porosimeter (MIP). The data sets of pore size (pore diameter) and log differential intrusion for the samples of mixture design 1 are used to plot the pore distribution diagrams. The individual values of total open porosity are given in the table on the right. This sheet presents semi-quantitative chemical compositions of point analysis of polish section examination using scanning electron microscope (SEM) equipped with an energy dispersive X-ray spectrometer (EDXS). The measurements are separated in tables according to the observed sample (M1-HHC and M1-CEC). The rows list the spectra of the points, with the mass fraction values of the individual elements and the calculated ratios of the relevant cement elements ratios. To plot a ternary diagram of the Ca-Si-Al chemical composition, the normalised proportions of the given elements (three elements together 100%) are calculated on the right.