{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T05:33:00Z","timestamp":1772083980920,"version":"3.50.1"},"reference-count":88,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2022,11,9]],"date-time":"2022-11-09T00:00:00Z","timestamp":1667952000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"I&amp;D unit Geosciences Center (CGEO)","award":["UIDB\/00073\/2020"],"award-info":[{"award-number":["UIDB\/00073\/2020"]}]},{"name":"I&amp;D unit Geosciences Center (CGEO)","award":["UIDP\/00073\/2020"],"award-info":[{"award-number":["UIDP\/00073\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Rock is used as a foundation and building material in many engineering projects and it is important to determine\/predict its engineering properties before project construction. Petrographic and textural characteristics are useful parameters for predicting engineering properties of rocks in such applications. In this research, fifteen rock samples were taken and their engineering characteristics, namely dry and saturated unit weights, porosity, water absorption, slake durability index (SDI), Schmidt rebound hardness (SRH), ultrasonic P-wave velocity (UPV), and uniaxial compressive strength (UCS), were measured in the laboratory. Petrographic and textural characteristics of the rocks, determined from thin section and X-ray diffraction investigations, led to the evaluation of the texture coefficient (TC). Based on simple regression analysis (SRA), the TC values have direct relationships with density, SDI, SRH, UPV, and UCS, and inverse relationships with porosity and water absorption. Experimental models were developed using multiple regression analysis (MRA) and artificial neural network (ANN) to predict Id2, SRH, UPV, and UCS of the tested rocks from the values of TC. Some statistical parameters including Pearson regression coefficient (R), coefficient values account for (VAF), root mean square error (RMSE), mean absolute percentage error (MAPE), and performance index (PI) were calculated to assess the performances of the MRA and ANN models. The correlations between experimental and calculated values of Id2, SRH, UPV, and UCS indicated that predicted values of the ANN models are more valid than the MRA. Additionally, the residual error of the ANN models varies less than the MRA. Finally, it has been concluded that the SRA, MRA, and ANN methods can successfully predict the rock engineering properties from the TC.<\/jats:p>","DOI":"10.3390\/ma15227922","type":"journal-article","created":{"date-parts":[[2022,11,10]],"date-time":"2022-11-10T02:11:15Z","timestamp":1668046275000},"page":"7922","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Predicting the Engineering Properties of Rocks from Textural Characteristics Using Some Soft Computing Approaches"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4534-7684","authenticated-orcid":false,"given":"Davood","family":"Fereidooni","sequence":"first","affiliation":[{"name":"School of Earth Sciences, Damghan University, Damghan 36716-41167, Iran"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9198-9365","authenticated-orcid":false,"given":"Lu\u00eds","family":"Sousa","sequence":"additional","affiliation":[{"name":"Department of Geology and Pole of CGeo\u2014Geoscience Center, University of Tr\u00e1s-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3","DOI":"10.4028\/www.scientific.net\/KEM.548.3","article-title":"Evaluation of the Portuguese ornamental stone resources","volume":"548","author":"Carvalho","year":"2013","journal-title":"Key Eng. 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