Roughness of fracture surfaces and compressive strength of hydrated cement pastes

被引：76

作者：

Ficker, Tomas ^{[1
]}

Martisek, Dalibor ^{[2
]}

Jennings, Hamlin M. ^{[3
,4
]}

机构：

[1] Brno Univ Technol, Fac Civil Engn, Dept Phys, Brno 60200, Czech Republic

[2] Brno Univ Technol, Fac Mech Engn, Dept Math, Brno 61662, Czech Republic

[3] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA

[4] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

CEMENT AND CONCRETE RESEARCH | 2010年 / 40卷 / 06期

关键词：

Roughness numbers; Fracture surfaces; Cement-based materials; Confocal microscopy; Compressive strength; IMAGE-ANALYSIS; PARAMETERS; BEHAVIOR;

D O I：

10.1016/j.cemconres.2010.02.002

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A new type of roughness number Rn-o is formulated as a possible analytical tool for surface studies using confocal microscopy. The formulation accommodates fractal dimension and both of the boundary length scales limiting the fiactal region of the fracture surface under investigation. Besides the number Rno other roughness characteristics are discussed and their effectiveness in the field of cementitious materials is tested 3D-surface profile SP and surface roughness SR parameters designed for surface 3D-analysis were calculated for fracture surfaces of hydrated Portland cement pastes with different values of water-to-cement ratio The surface profile SP parameters monotonically increased with water-to-cement ratio and monotonically decreased with compressive strength A short discussion of possible reasons for such a behavior is presented (C) 2010 Elsevier Ltd All rights reserved.

引用

页码：947 / 955

页数：9

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