Compressive and flexural strength of starch-gelled lightweight composites

The flexural test for each mixture was conducted on three rectangular specimens measuring 40x40x160 mm, in accordance with the PN-EN 196-1 standard. The reported result represents the average value of the three tests performed under controlled laboratory conditions.nDuring the flexural test, the prepared prisms were loaded until failure, resulting in their fracture into two halves. These halves were subsequently used for repeated compressive strength tests of the composites. The loading rate was 0.015 N/s. Flexural strength measurements were carried out after 28 days of curing the prisms in a wet state, as well as after an additional 3-day drying period at 70°C until constant mass was achieved, to assess the properties of dried specimens. The compressive strength of the composites was determined following the PN-EN 196-1 standard. For the tested halves of the rectangular prisms, the pressure plate of the testing machine had dimensions of 40x40 mm, precisely meeting the standards requirements. The loading rate was set at 0.25 N/mm2/s, selected to ensure that failure occurred within 30 to 90 seconds from the start of the test. Compressive strength tests were performed after 28 days of curing the prisms in a wet environment, and additionally after a 3-day drying period at 70°C until constant mass was reached, to evaluate the properties of the dried specimens. 
Format and structure of the data:The data are provided in an .xlsx file and in a corresponding .csv file. A detailed description of the data is included in the respective files. The failure loads are given in kN.
This research was funded in whole by the National Science Centre, Poland within Project no. 2023/51/D/ST8/00107 (SONATA-19).
More information about the presented data is included in the README file.