2023
DOI: 10.3390/buildings13010123
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Study on the Relationship between Early Shrinkage Cracking and Mechanical Properties of Nano-Clay Cement Mortar Based on Fractal Theory

Abstract: In order to study the influence of nano-clay on the crack resistance of cement-based materials, two kinds of nano-metakaolin (NMK) and two kinds of nano-attapulgite clay (NMA) were considered. The early cracking process and mechanical properties of nano-clay cement mortar (NCM) was studied by using a plate knife-edge constraint test. Based on fractal theory, the distribution characteristics of NCM surface cracks were revealed, and the calculation method forNCM maximum crack width was given. The results show th… Show more

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Cited by 5 publications
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“…When the cement paste is compressed, the compressive stress is transferred from the external cement matrix to the elastic particles. The elastic particles form a structural deformation center within the cement paste matrix, which can limit the generation and development of strain microcracks, absorb strain energy, and improve the elasticity of the cement paste [ 40 , 41 , 42 ]. At the same time, when the cement sample is impacted by external loads, the crystal particles are the transmission medium of the impact force.…”
Section: Resultsmentioning
confidence: 99%
“…When the cement paste is compressed, the compressive stress is transferred from the external cement matrix to the elastic particles. The elastic particles form a structural deformation center within the cement paste matrix, which can limit the generation and development of strain microcracks, absorb strain energy, and improve the elasticity of the cement paste [ 40 , 41 , 42 ]. At the same time, when the cement sample is impacted by external loads, the crystal particles are the transmission medium of the impact force.…”
Section: Resultsmentioning
confidence: 99%