Mechanical and Non-Destructive Testing of Plasterboards Subjected to a Hydration Process

Ranachowski, Z.; Ranachowski, P.; Dębowski, Tomasz; Brodecki, Adam; Kopeć, Mateusz; Roskosz, Maciej; Fryczowski, Krzysztof; Szymków, Mateusz; Krawczyk, Ewa; Schabowicz, Krzysztof

doi:10.3390/ma13102405

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…The aim of this study [ 25 ] was to investigate the effect of plasterboards’ humidity absorption on their performance. The specimens’ hydration procedure consisted of consecutive immersing in water and subsequent drying at room temperature.…”

Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

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Testing of Materials and Elements in Civil Engineering

Schabowicz

2021

Materials

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This issue is proposed and organized as a means to present recent developments in the field of testing of materials in civil engineering. For this reason, the articles highlighted in this issue should relate to different aspects of testing of different materials in civil engineering, from building materials and elements to building structures. The current trend in the development of materials testing in civil engineering is mainly concerned with the detection of flaws and defects in elements and structures using destructive, semi-destructive, and nondestructive testing. The trend, as in medicine, is toward designing test equipment that allows one to obtain a picture of the inside of the tested element and materials. Very interesting results with significance for building practices of testing of materials and elements in civil engineering were obtained.

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Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

“…Four types of approximated formulae were proposed to describe the dependence of UT wave velocity on the board moisture content. It was found that the proposed UT method could be successfully used for the on-site monitoring of plasterboards’ hydration processes [ 25 ].…”

Section: Description Of the Articles Presented In The Issuementioning

confidence: 99%

Testing of Materials and Elements in Civil Engineering

Schabowicz

2021

Materials

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Established soil science methods can benefit the construction industry when determining gypsum content

Herrero

Zartman

2021

Cleaner Engineering and Technology

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Effect of Different Temperatures on the Hydration Kinetics of Urea-Doped Cement Pastes

Luan

et al. 2022

Materials

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Urea can solve the problem of concrete cracking due to temperature stress. However, its effect is affected by temperature. The influencing mechanism of temperature on urea-doped cement pastes is still unclear. This paper explores the effect of different temperatures on the hydration kinetics of urea-doped cement pastes. The isothermal calorimeter (TAM Air) was used to test hydration at three constant temperatures (20 °C, 40 °C, and 60 °C). The effects of the urea admixture and temperature on the hydration process and hydration kinetics parameters were investigated. The hydration mechanism was analyzed, and the changes in macroscopic mechanical compressive strength and porosity were tested. The results show that, as the urea content (UC) increases, the rate of hydration gradually decreases, and the increase in temperature promotes the inhibitory effect of urea. At 60 °C, UC of 8% can be reduced by 23.5% compared with the pure cement (PC) group’s hydration rate. As the temperature increases from 20 °C to 60 °C, the Krstulovic–Dabic model changes from the NG-I-D process to the NG-D process. The effect of urea on the compressive strength of the cement is mainly shown in the early stage, and its effect on later strength is not obvious. In addition, urea will increase its early porosity. The porosity will gradually decrease in the later stage. The results of the study clarify the effect of temperature on urea-doped cement pastes. The optimal content of urea in cement is about 8%, which will provide theoretical guidance for solving the cracking problem of large-volume concrete due to temperature stress.

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Mechanical and Non-Destructive Testing of Plasterboards Subjected to a Hydration Process

Cited by 4 publications

References 22 publications

Testing of Materials and Elements in Civil Engineering

Testing of Materials and Elements in Civil Engineering

Established soil science methods can benefit the construction industry when determining gypsum content

Effect of Different Temperatures on the Hydration Kinetics of Urea-Doped Cement Pastes

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