. . . . "the ratio of the mass of the dry material of a porous body to its true volume, expressed in grams per cubic centimetre or in kilograms per cubic metre." . . . "True density" . . . . . "Christos Vasileiou" . "2026-01-08T13:56:19.308Z"^^ . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "INDCIBv0qjhzmy2MZbVB3f0aAkkOOcUCNXo8P5QutIgjzkSQBokiW4AxBtEhOesjJXdaRqYRpSFJ4G1X19FLrE9xjCbn+kOcxDkkW2QCgpBEWbTR5LjX6onNv+lc1yzZ/fIZytlvW4d/Zy8TfAnuDkYevjo0RmoGQVpu7cZdm1O/3iR99c8k1VrrFawiJzN+eohw2GN2n4mUUw7QdTCFQgbSVLmg5R8iN5tTujaoD/bpZR9FmNdGBNfcaXqUN317JX2zq0f7XjwGQB4MH/5F6CCrjtQFE1xqRH1QEmspvO7GvYkWxLOfEDEar5avW4sQ2ibPDWvsBoWqwKCSuBCNzQ==" . . .