【摘要】：通過硫酸鹽干濕循環(huán)加速腐蝕試驗(yàn)?zāi)M硫酸鹽環(huán)境,對(duì)硫酸鹽干濕循環(huán)作用下碳纖維增強(qiáng)復(fù)材(CFRP)-混凝土界面的黏結(jié)性能進(jìn)行了研究。結(jié)果表明:隨著腐蝕時(shí)間的延長(zhǎng),破壞面進(jìn)入混凝土層的深度逐漸變淺,黏結(jié)強(qiáng)度逐漸降低。通過對(duì)試驗(yàn)結(jié)果的統(tǒng)計(jì)回歸分析,建立了硫酸鹽干濕循環(huán)作用下CFRP-混凝土界面黏結(jié)強(qiáng)度退化模型,預(yù)測(cè)模型能夠很好地反映正拉黏結(jié)強(qiáng)度隨硫酸鹽腐蝕時(shí)間的退化規(guī)律。
[Abstract]:The adhesion properties of carbon fiber reinforced composite (CFRP)-concrete interface under dry and wet sulphate cycle were studied by accelerated corrosion test of sulphate dry and wet cycle. The results show that with the extension of corrosion time, the depth of the failure surface into the concrete layer becomes shallower, and the bonding strength decreases gradually. Based on the statistical regression analysis of the test results, a degradation model of the interfacial bond strength of CFRP- concrete under the action of sulphate dry and wet cycle is established. The prediction model can well reflect the degradation law of the positive tensile bond strength with the sulfate corrosion time.
【作者單位】： 蘭州交通大學(xué)土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51368035) 甘肅省住房和城鄉(xiāng)建設(shè)廳科技攻關(guān)項(xiàng)目(JK2014-16)
【分類號(hào)】：TU528

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