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干燥环境下粉煤灰混凝土表面假性碳化研究OA

中文摘要英文摘要

回弹法检测混凝土强度需要测量混凝土表面的碳化深度,混凝土表面的碳化深度测量在干燥环境下将受到一定的影响.该文通过设置烘干组、干燥组、标养组试块及墩柱A、墩柱B进行回弹法试验.从试验中发现,干燥环境下混凝土的碳化,在喷上酚酞时出现明显分界线,随着时间推移,碳化区颜色变粉再变红,碳化分界线往混凝土表面移动.干燥环境下粉煤灰混凝土的碳化受三方面影响,一是由于水泥熟料占比减少,产生的Ca(OH)2 减少;二是由于粉煤灰的二次水化消耗Ca(OH)2;三是干…查看全部>>

It is necessary to measure the carbonation depth of concrete surface by rebound method,and the measurement of carbonation depth of concrete surface will be affected in dry environment.In this paper,the rebound test is carried out by setting up oven-drying group,drying group,standard maintenance group,as well as pier A and pier B.It was found that the carbonation boundary of concrete in dry environment appeared obviously when phenolphthalein was sprayed on it…查看全部>>

傅国锋

中交第三航务工程局有限公司厦门分公司,福建 厦门 361000

土木建筑

干燥环境粉煤灰混凝土假性碳化二次水化水泥熟料占比

dry environmentfly ash concretepseudo carbonizationsecondary hydrationproportion of cement clinker

《科技创新与应用》 2024 (3)

61-64,4

10.19981/j.CN23-1581/G3.2024.03.015

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