According to the engineering experiences and the correlation criteria , 13 kinds of factors are selected and each factor ' s subordinate functions are constructed in the first model , at the same time the two - stage index values of the effect factors are determined according to the statistical method . for the other model , the cohesion and the internal friction angles of the rocks are regarded as the fuzzy - random variables 本文根據(jù)實際工程經(jīng)驗及相關(guān)規(guī)范,提出了13種影響壩肩巖體穩(wěn)定的影響因素,其中包括10種定量因素和3種定性因素,并且構(gòu)造了各因素的隸屬函數(shù),還根據(jù)專家調(diào)查法和統(tǒng)計方法確定了各級因素的權(quán)重系數(shù),利用二級模糊綜合評判法對壩肩巖體進(jìn)行綜合評判。
By testing according to correlation criterions , the performances of jd such as ratio of water - reducing , ratio of compressive strcngth , effect of accelerating and enhancing strength , ratio of bleeding , air entrainment content , effect of keeping slump value , compatibility with cement , resistance to concrete shrinkage and damage by freezing and thawing and water - tightness etc are all better than that of the traditional melamine resin superplasticizer sm and naphthalene series superplasticizer fdn 按照相關(guān)標(biāo)準(zhǔn)進(jìn)行測試,所開發(fā)的改性密胺樹脂高效減水劑的各種性能如減水率、抗壓強(qiáng)度比、早強(qiáng)增強(qiáng)效果、泌水率、引氣性、坍落度保持效果、與水泥適應(yīng)性、收縮性能、抗凍融性能、抗?jié)B性能等都遠(yuǎn)遠(yuǎn)優(yōu)于傳統(tǒng)的三聚氰胺高效減水劑sm ,也優(yōu)于萘系高效減水劑fdn 。