试题与答案

下列材料中,可作为高性能混凝土矿物掺合料的有()。 A.硅灰 B.粉煤灰 C.磨细天

题型:多项选择题

题目:

下列材料中,可作为高性能混凝土矿物掺合料的有()。

A.硅灰

B.粉煤灰

C.磨细天然石灰石

D.磨细天然沸石

E.粒化高炉矿渣

答案:

参考答案:A, B, D, E

解析:此题主要考察对高性能混凝土矿物掺合料知识的掌握。高强高性能混凝土用矿物外加剂(掺合料)是在混凝土搅拌过程中加入的、具有一定细度和活性的用于改善新拌合硬化混凝土性能(特别是混凝土耐久性)的某些矿物类的产品。一般使用的矿物外加剂(掺合料)有以下种类:粒化高炉矿渣、磨细矿渣、硅灰、粉煤灰、天然沸石岩。通过分析考试说明,每题的备选项中,有2个或2个以上符合题意,至少有1个错项,将五个选项分别进行对照判定,本题的正确项应是"ABDE"。

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