Properties of high strength concrete using white and dune sands under normal and autoclaved curing

被引：56

作者：

Alhozaimy, A. ^{[2
]}

Jaafar, M. S. ^{[1
]}

Al-Negheimish, A. ^{[2
]}

Abdullah, A. ^{[3
,4
]}

Taufiq-Yap, Y. H. ^{[3
]}

Noorzaei, J. ^{[1
,5
]}

Alawad, O. A. ^{[1
]}

机构：

[1] Univ Putra Malaysia, Dept Civil Engn, Serdang 43400, Selangor, Malaysia

[2] King Saud Univ, Ctr Excellence Concrete Res & Testing, Riyadh, Saudi Arabia

[3] Univ Putra Malaysia, Fac Sci, Dept Chem, Serdang 43400, Selangor, Malaysia

[4] Univ Teknol Mara, Fac Sci Appl, Kuala Pilah 72000, Negeri Sembilan, Malaysia

[5] Univ Putra Malaysia, Inst Adv Technol, Serdang 43400, Selangor, Malaysia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 27卷 / 01期

关键词：

White sand; Dune sand; Autoclave curing; High strength concrete; Microstructure analysis; MECHANICAL-PROPERTIES; SILICA FUME; REACTIVITY;

D O I：

10.1016/j.conbuildmat.2011.07.057

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Dune sand generally has lower silica content compared to white sand. Effects of autoclave curing on concretes containing white and dune sands as a partial cement replacement on the strength and microstructural properties were investigated. It was found that the compressive strength of concretes containing white and dune sands increased by 38% and 36% respectively after autoclaving compared to those cured under normal curing. The final products obtained were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM) and the thermogravimetric analysis (TGA) to investigate the mechanism that causing increase in the compressive strength. Microstructure analysis revealed that the mixes containing 30% of white and dune sand as partial cement replacement subjected to autoclave curing produced lower Ca(OH)(2) content compared to those cured under normal curing. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：218 / 222

页数：5

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