In-situ curing mechanism of Portland cement

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Abzaev, Yu.A.^1 ; Gnyrya, A.I.^1 ; Korobkov, S.V.^1 ; Dudov, D.O.^1 ; Mihailov, D.A.^1

Tomsk State University of Architecture and Building, Solyanaya Sq., 2, Tomsk

634003, Russia^1

关键词: Accumulation rates;    Cubic polynomials;    Hydration degree;    Hydration products;    Microstructural modeling;    Predictive modelling;    Water-cement ratio;    Watercement (w/c) ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012038/pdf
DOI  :  10.1088/1757-899X/597/1/012038

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

The paper presents the results of predictive modelling of the mechanism of Portland cement curing using the VCCTL tool. The curing is studied at the water-cement (W/C) ratio of 0.30 and 0.35, during 28 days at room temperature. It is shown that the hydration degree correlates with the heat generation and the accumulation rate of hydration products. At W/C=0.30, the content of clinker phases and hydration products is higher than at W/C=0.35, but the rate of the indicated processes is almost similar. The growth in the water-cement ratio reduces the pore space filled with free moisture as well as the moduli of rupture. The correlation is detected between the Portland cement strength and Young's modulus in the form of quadratic and cubic polynomials. These dependencies are in good agreement with the literature data and testify to the suitability of the VCCTL microstructural model of Portland cement curing.