Quantification of the residual mortar content in recycled concrete aggregates by image analysis

被引：183

作者：

Abbas, A. ^{[2
]}

Fathifazl, G. ^{[3
]}

Fournier, B. ^{[1
]}

Isgor, O. B. ^{[4
]}

Zavadil, R. ^{[5
]}

Razaqpur, A. G. ^{[6
]}

Foo, S. ^{[7
,8
]}

机构：

[1] Univ Laval, Dept Geol & Geol Engn, Quebec City, PQ G1V 0A6, Canada

[2] Amec Amer, Calgary, AB, Canada

[3] Adjeleian Allen Rubeli Consulting Struct Engineer, Ottawa, ON, Canada

[4] Carleton Univ, Dept Civil & Environm Engn, Ottawa, ON K1S 5B6, Canada

[5] CANMET MTL, Dept Nat Resources, Ottawa, ON, Canada

[6] McMaster Univ, Dept Civil Engn, Hamilton, ON, Canada

[7] Govt Serv Canada, Gatineau, PQ, Canada

[8] Dept Publ Works, Gatineau, PQ, Canada

来源：

MATERIALS CHARACTERIZATION | 2009年 / 60卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Recycled concrete aggregates; Image analysis; Residual mortar; Sustainable development;

D O I：

10.1016/j.matchar.2009.01.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

As the supply of suitable fresh aggregates in some locations is rapidly dwindling and such aggregates need to be transported from distant locations, there will be more and more economic and environmental reasons to use recycled concrete aggregates in making new concrete. The nature and properties of recycled concrete aggregates have a definite impact on the performance of recycled aggregate concrete and the effects can vary considerably. Existing literature and studies conducted by the authors have shown that the amount and properties of the residual mortar in the recycled concrete aggregates significantly affect the mechanical and durability properties of the new concrete. Consequently, a quick laboratory method was developed to determine the residual mortar content of recycled concrete aggregates, to serve as a quality control tool for such aggregates. In order to validate the results obtained by that laboratory test procedure, image analysis was used to quantify the residual mortar content in the different size fractions of the recycled concrete aggregates tested. The results confirmed that the quick laboratory test provides an accurate measurement of the residual mortar content in recycled concrete aggregates. (C) 2009 Elsevier Inc. All rights reserved,

引用

页码：716 / 728

页数：13

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