Modelling acid attack on concrete: Part II. A computer model

被引：24

作者：

Beddoe, Robin E. ^{[1
]}

机构：

[1] Tech Univ Munich, Ctr Bldg Mat, D-80290 Munich, Germany

来源：

CEMENT AND CONCRETE RESEARCH | 2016年 / 88卷

关键词：

Acid attack; Degradation; Durability; Modelling; HARDENED CEMENT PASTE; COMBINED CHEMICAL-REACTIONS; NITRIC-ACIDS; TRANSPORT PROCESSES; CORROSION; TEMPERATURE; DISSOLUTION; RESISTANCE; DIFFUSION; KINETICS;

D O I：

10.1016/j.cemconres.2015.10.012

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A numerical model is presented for simulating the degradation of concrete under static or flowing acid attack by mineral or organic acids. The degradation process is described by the diffusion of species in the water-filled pore space produced by the dissolution of calcium in the binder paste matrix and, if dissolvable, the aggregate particles. Methods are presented for simulating the effect of (a) the aggregate particle distribution in the near surface concrete region for a given grading curve, (b) the loss of surface material due to abrasive processes and (c) gypsum precipitation during sulphuric acid attack. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：20 / 35

页数：16

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