本文選題：再生混凝土 + 再生細骨料��； 參考：《混凝土》2016年11期

【摘要】：基于模糊綜合評估理論,提出了一種評估混凝土用再生細骨料質(zhì)量等級的方法。首先,將混凝土用再生細骨料劃分為4個模糊質(zhì)量等級,分別對應(yīng)于優(yōu)等、合格、基本合格與不合格4個狀態(tài),給出了不同質(zhì)量等級再生細骨料適用的環(huán)境作用等級和工程類別。然后,選取表觀密度、吸附砂漿含量、吸水率、堅固性、再生膠砂需水量比和再生膠砂強度比6個指標(biāo),界定各個指標(biāo)對不同質(zhì)量等級的最優(yōu)區(qū)間。采用最優(yōu)區(qū)間型隸屬度函數(shù)確定各指標(biāo)對各質(zhì)量等級的隸屬度。依據(jù)層次分析法確定各指標(biāo)的權(quán)重,以質(zhì)量等級評分值作為評定再生細骨料質(zhì)量等級的唯一標(biāo)準(zhǔn)。最后,結(jié)合算例,驗證了本方法的科學(xué)性與合理性。
[Abstract]:Based on the fuzzy comprehensive evaluation theory, a method for evaluating the quality grade of recycled fine aggregate for concrete is proposed.First of all, the recycled fine aggregate used in concrete is divided into four fuzzy quality grades, corresponding to excellent, qualified, basically qualified and unqualified four states, respectively.The environmental action grade and engineering category of recycled fine aggregate with different quality grades are given.Then, six indexes such as apparent density, adsorption mortar content, water absorption rate, firmness, water demand ratio of regenerated cement sand and strength ratio of regenerated mortar were selected to define the optimal range of each index for different quality grades.The optimal interval membership function is used to determine the membership degree of each index to each quality grade.The weight of each index is determined according to the analytic hierarchy process (AHP) and the quality grade is regarded as the sole criterion for evaluating the quality grade of recycled fine aggregate.Finally, the method is proved to be scientific and reasonable with an example.
【作者單位】： 常州大學(xué)土木工程系;
【基金】：國家自然科學(xué)基金(51278073) 江蘇省產(chǎn)學(xué)研合作前瞻性聯(lián)合研究項目(BY2013024-17,BY2014037-30,BY2015027-23)
【分類號】：TU528.041
，

本文編號：1773415