Permeability modeling of self-healing due to calcium carbonate precipitation in cement-based materials with mineral additives

Yuan, Zhengcheng; Jiang, Zhengwu; Chen, Qing

doi:10.1007/s11771-019-4028-4

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…As per Figure 4, it can be observed that the reaction temperature for several modified GCC falls within the range of 200 °C-300 °C, as Frontiers in Materials frontiersin.org reported in studies by Yuan et al (2019) and Nakarai et al (2021). Upon comparing the curve of unmodified GCC with the curves of modified GCC, it is evident that unmodified GCC shows minimal mass loss and remains relatively stable as the temperature increases in the temperature range of 200 °C-600 °C, while modified GCC exhibits varying degrees of mass loss with the increase of temperature, and the extent of mass loss roughly corresponds to the amount of modifying agent added.…”

Section: Modification Mechanism Analysissupporting

confidence: 72%

Modified ground calcium carbonate mineral powder using in asphalt concrete: modification mechanism characterization at macro and micro levels

Yan

2023

Front. Mater.

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The study investigated the modification mechanism of modified ground calcium carbonate (GCC) mineral powder using in asphalt concrete. Two types of Titanate coupling agents, namely, K38S (TCA-K38S) and 201 (TCA-201), as well as sodium stearate coupling agent, were adopted to prepare modified GCC. The optimized preparation process was obtained through the orthogonal test. Two kinds of modified GCC were preferably selected to prepare asphalt concrete according to modification mechanism characterization, their performance was analyzed and evaluated at macro and micro levels. The study results show that, the optimal scheme of sodium stearate modified GCC is modification temperature of 80°C, modification time of 50 min, modifying agent dosage of 2.0%. The crystal structure of GCC remains unchanged after modification, with the original lattice structure being maintained. TCA-201 and sodium stearate exhibit better coating properties than that of TCA-K38S. The contact angles of TCA-201 and sodium stearate modified GCC are larger than that of TCA-K38S modified GCC. The in-service performance of AC-13C asphalt concrete modified with sodium stearate is found to be superior to that of TCA-201 modified AC-13C asphalt concrete. Compared with the unmodified AC-13C asphalt concrete, the Marshall modulus, residual stability, freeze-thaw splitting strength ratio, and maximum flexural tensile strain of sodium stearate modified AC-13C asphalt concrete are increased by 54.55%, 2.73%, 10.47%, and 26.41% respectively. This paper provides theoretical guidance for the application of GCC mineral powder in asphalt concrete.

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Section: Modification Mechanism Analysissupporting

confidence: 72%

Modified ground calcium carbonate mineral powder using in asphalt concrete: modification mechanism characterization at macro and micro levels

Yan

2023

Front. Mater.

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“…On the other hand, both the cement fineness and the subsequent curing environment have a certain influence on the self‐healing behavior of the steam‐cured concrete. Researchers 84,87–89 found that the partially‐or‐non hydrated cement particles with 32 ~ 65 um fineness exposed in the pores or cracks could further hydrate and then fill the cracks. It is true that the surface layer defects of the steam‐cured concrete aggravate the permeability.…”

Section: Controlling the Thermal Damage Of Steam‐cured Concretementioning

confidence: 99%

Thermal damage and its controlling methods of high‐speed railway steam‐cured concrete: A review

Xiang

Zheng

et al. 2020

Structural Concrete

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The steam curing technology is worldwide applied in the production of concrete prefabricated components, including the production of track slab and girder used for the high‐speed railway in China. However, the steam curing process at elevated temperature will often generate the heat damage on concrete and thus degrade the long‐term performance of the steam‐cured concrete prefabricated components. It is very important to deeply understand the mechanism of heat damage and thus to find effective method reducing or avoiding the damage of steam curing on concrete. The main purpose of this paper is to systematically classify the types of thermal damages on concrete during the steam curing and its mechanism. The influences of main factors on three thermal damages such as the unrecoverable expansion deformation, the surface layer defect, and the embrittlement of the steam‐cured concrete are discussed in detail. The controlling methods of thermal damages including optimization of the steam curing regime and mixing proportions, the addition of supplementary additives, the self‐healing technology, and other curing technology are compared and summarized based on the literatures. Finally, suggestions for future research are proposed in order to effectively reduce or even avoid the thermal damage of the steam‐cured concrete. And also, some new technology for developing the green and high performance early strength concrete with low CO2 emission are presented.

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A dual role on cleaning and healing of foreign agents for sustainable smart buildings using nano-TiO2

Murugesan

Venkatraman²,

Ismail

et al. 2023

Innov. Infrastruct. Solut.

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Permeability modeling of self-healing due to calcium carbonate precipitation in cement-based materials with mineral additives

Cited by 6 publications

References 32 publications

Modified ground calcium carbonate mineral powder using in asphalt concrete: modification mechanism characterization at macro and micro levels

Modified ground calcium carbonate mineral powder using in asphalt concrete: modification mechanism characterization at macro and micro levels

Thermal damage and its controlling methods of high‐speed railway steam‐cured concrete: A review

A dual role on cleaning and healing of foreign agents for sustainable smart buildings using nano-TiO2

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