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Many empMcal cqu 訊tio 皿s for p 爬 diot 血 g thc modulus of clasticity of concrete from the ◎ omp 爬 ssive strellg 血 have been proposed ， while few equations covedhe whoIe da重 a． The reasorn蛤 that mechanical properties of concrete are highly dopcndent on thc propcrtics and the mix proponions of consti 亡 uent materiats ． More than 3 ， 000 da愉 ， obta 血cd by many research 鵬 on the relationship between compressive str gth and modu 鼠 us of clasticity were analyzed statistically ． lhe comp 爬 ssive st爬 皿g山 of Qo虱crcte ranged f 匸oln 20 to l60 MPa ， As a result ， a praCti 〔 ral a皿 d universal equation is proposed which takes i ロに o cofisideration typcs of coarse aggregates alld 亡 ypes of mine 皿 正additions 、 Kayworris ： 瘤 ゐ 鉚 8' h 'o πσ厂鷹 砌 4ぬ 5 ρ！ elasticity， tX」 mpresstVe strength cearse aggreg 刎 et minera-α凶1f 吻 馮 副 'weigh '

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This study was ca ed out to investigate q 岨 nIitaIively Ihe relationship be重ween 重 he degree of rebar corrosion and ：he s 重 rength of reinforced concrete ( RC ＞beams ， After producing equations f6r the relatienship be電 ween bo 血 the 重 ensile prope 前ies of rebars and bond propenies and the corrosion percentag ¢ of rebars ， finiIe element ana 且 ysis and bending IestS were conduc 重 ed for RC beams damaged by rebar corrosion ． As a τesult， it was made ciea ロ haロ he strengIh of RC beams damaged by cerresien could be prac重 ically simulated by FEM using experimentally determined material models representing 重 he bond properties and the mechanical properties of corroded rebars ，