Evaluation the pozzolanic reactivity of sonochemically fabricated nano natural pozzolan

被引：37

作者：

Askarinejad, Azadeh ^{[1
]}

Pourkhorshidi, Ali Reza ^{[1
]}

Parhizkar, Tayebeh ^{[1
]}

机构：

[1] BHRC, Dept Concrete, Tehran, Iran

来源：

ULTRASONICS SONOCHEMISTRY | 2012年 / 19卷 / 01期

关键词：

Nano natural pozzolan; Sonochemistry; Pozzolanic reactivity; Compressive strength; MECHANICAL-PROPERTIES; CEMENT MORTAR; CONCRETE; NANO-SIO2; SILICA; PARTICLES; PASTE;

D O I：

10.1016/j.ultsonch.2011.05.005

中图分类号：

O42 [声学];

学科分类号：

070206 [声学];

摘要：

Natural pozzolans are appropriate supplementary cementitious materials in cement and concrete industry. A simple sonochemical method was developed to synthesize nanostructures of natural pozzolan. Chemical composition, crystallinity, morphology and reactivity of the natural pozzolan samples were compared before and after the sonochemical process, by using powder X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Thermal Gravimetry and Differential Thermal Analysis (TG/DTA). Compressive strength tests were performed to evaluate the properties of blended cements incorporating nano natural pozzolan. Under optimized conditions, the nano natural pozzolans showed a superior reactivity as compared with the bulk natural pozzolan. Also higher compressive strength was obtained for the cement specimen incorporating nano natural pozzolan. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：119 / 124

页数：6

共 32 条

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