{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T03:46:40Z","timestamp":1766720800987,"version":"build-2065373602"},"reference-count":83,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T00:00:00Z","timestamp":1659139200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Higher Education of the Russian Federation as the grant Self-Healing Construction Materials","award":["075-15-2021-590"],"award-info":[{"award-number":["075-15-2021-590"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>With the aim of investigating the response of concrete to the dual effect of accidental fire high temperatures and possible induced impacts due to falling fragmented or burst parts or objects, an experimental work is conducted in this study to explore the influence of exposure to temperatures of 200, 400 and 600 \u00b0C on the responses of concrete specimens subjected to impact loads. Cylindrical specimens are tested using the recommended repeated impact procedure of the ACI 544-2R test. Three concrete mixtures with concrete nominal design strengths of 20, 40 and 80 MPa are introduced to represent different levels of concrete strength. From each concrete mixture, 24 cylinders and 12 cubes are prepared to evaluate the residual impact resistance and compressive strength. Six cylindrical specimens and three cubes from each concrete mixture are heated to each of the three levels of high temperatures, while the other six cylinders and three cubes are tested without heating as reference specimens. The test results show that the behavior of impact resistance is completely different from that of compressive strength after exposure to high temperatures; the cylindrical specimens lose more than 80% of the cracking and failure impact resistance after exposure to 200 \u00b0C, while impact resistance almost vanishes after exposure to 400 and 600 \u00b0C. Concrete compressive strength is found to be effective on the unheated impact specimens, where the higher-strength cylinders retain significantly higher impact numbers. This effect noticeably decreases after exposure to 200 and 400 \u00b0C, and vanishes after exposure to 600 \u00b0C.<\/jats:p>","DOI":"10.3390\/ma15155283","type":"journal-article","created":{"date-parts":[[2022,8,1]],"date-time":"2022-08-01T02:06:42Z","timestamp":1659319602000},"page":"5283","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Repeated Impact Response of Normal- and High-Strength Concrete Subjected to Temperatures up to 600 \u00b0C"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4023-7382","authenticated-orcid":false,"given":"Sallal R.","family":"Abid","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Wasit University, Kut 52003, Iraq"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6971-6192","authenticated-orcid":false,"given":"Ahmmad A.","family":"Abbass","sequence":"additional","affiliation":[{"name":"Building and Construction Materials Department, Southern Technical University-Shatrah Technical Institute, Shatrah 64007, Iraq"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1151-0853","authenticated-orcid":false,"given":"Gunasekaran","family":"Murali","sequence":"additional","affiliation":[{"name":"Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammed L. J.","family":"Al-Sarray","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, Wasit University, Kut 52003, Iraq"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Islam A.","family":"Nader","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, Wasit University, Kut 52003, Iraq"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sajjad H.","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, Wasit University, Kut 52003, Iraq"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,30]]},"reference":[{"key":"ref_1","unstructured":"Abrams, M.S. (1971). Compressive Strength of Concrete at Temperatures to 1600 oF. 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