Experimental Study on Physicochemical and Mechanical Properties of Mortar Subjected to Acid Corrosion
Joint Authors
Huo, Runke
Li, Shuguang
Ding, Yu
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-20
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The 28 days cured cement mortar samples were soaked in HCl (pH = 1 and 2) and H2O (pH = 7) solutions for 90 days.
By monitoring the ion concentration of H+ and Ca2+ and measuring the changes in weight loss, longitudinal wave velocity, and uniaxial compressive strength values of the corroded mortar, the physicochemical and mechanical properties of the mortar specimens were studied.
Experimental results indicate that the process of the mortar sample subjected to HCL erosion has apparent stage characteristics.
In the initial stage of corrosion, the chemical reaction increased the porosity of the specimen, which leads to the decrease of longitudinal wave velocity of the samples.
At the same time, the corrosion solution continuously penetrates into the mortar pore system, which leads to the increase of the mass, and it is considered that the diffusion process plays a leading role during this period.
Moreover, the colloidal compounds generated by the chemical reaction can not only fill the pore space but also block the continuous reaction, which led to the increase of the longitudinal wave velocity of the specimen.
With the prolonging of corrosion time and infiltration path, the pH value and the concentration of Ca2+ tend to be stable, the diffusion action is weakened, and the chemical reaction is continuous, which led to the decrease of the mass and wave velocity gradually.
It is considered that the chemical reaction plays a leading role in this process.
Based on the induction and analysis of the test results, a generalized porosity model regarding the increase of the porosity and the decrease of effective bearing area of the mortar sample was proposed.
The relation between the uniaxial compressive strength and the corrosion time of the corroded mortar is deduced, and the unknown parameters are determined based on the regression analysis of the test data.
American Psychological Association (APA)
Huo, Runke& Li, Shuguang& Ding, Yu. 2018. Experimental Study on Physicochemical and Mechanical Properties of Mortar Subjected to Acid Corrosion. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1120371
Modern Language Association (MLA)
Huo, Runke…[et al.]. Experimental Study on Physicochemical and Mechanical Properties of Mortar Subjected to Acid Corrosion. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1120371
American Medical Association (AMA)
Huo, Runke& Li, Shuguang& Ding, Yu. Experimental Study on Physicochemical and Mechanical Properties of Mortar Subjected to Acid Corrosion. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1120371
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120371