OXYGEN DIFFUSIVITY OF VARIOUS CEMENTITIOUS MATERIALS

被引：32

作者：

KOBAYASHI, K ^{[1
]}

SHUTTOH, K ^{[1
]}

机构：

[1] MAEDA CORP,TECH RES INST,NERIMA KU,TOKYO,JAPAN

来源：

CEMENT AND CONCRETE RESEARCH | 1991年 / 21卷 / 2-3期

关键词：

D O I：

10.1016/0008-8846(91)90009-7

中图分类号：

TU [建筑科学];

学科分类号：

0813 [建筑学];

摘要：

In order to quantitatively grasp the diffusivity of oxygen in concrete, an apparatus for measuring the amount of oxygen permeating through concrete due to a concentration gradient under a condition of constant pressure was manufactured on a trial basis. Next, using this apparatus, the oxygen diffusion coefficients of various cementitious materials of different mix proportions, curing conditions, and moisture contents were measured, and it was shown that the oxygen diffusion coefficient of mortar is considerably lower than of concrete, and by intermixing a polymer dispersion in the mortar, the value of the oxygen diffusion coefficient could be made markedly lower.

引用

页码：273 / 284

页数：12