Study on the Effects of Powder-Liquid Ratio and Cement Ratio on Mechanical Properties and Microscopic Characteristics of Polymer-Cement Composite

This paper is about a study on the mechanical properties of a new polymer-cement composite (PCC) in constant elongation, tension, and shear. The study explored the effects of powder-liquid ratio and cement ratio on the mechanical properties of PCC through detecting the strength, deformation, and ene...

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Published in:Advances in civil engineering 2021, Vol.2021 (1)
Main Authors: Huang, Zhe, Xu, Jinyu, Leng, Binglin, Ren, Weibo, Chang, Sen, Wang, Zhihang, Xia, Wei
Format: Article
Language:English
Subjects:
Adhesion
Adhesive strength
Cement
Cement hydration
Civil engineering
Composite materials
Concrete
Deformation
Elongation
Energy consumption
Hydrates
Influence
Mechanical properties
Mercury
Morphology
Polymer films
Polymers
Shear strength
Shear tests
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Leng, Binglin
Ren, Weibo
Chang, Sen
Wang, Zhihang
Xia, Wei
description This paper is about a study on the mechanical properties of a new polymer-cement composite (PCC) in constant elongation, tension, and shear. The study explored the effects of powder-liquid ratio and cement ratio on the mechanical properties of PCC through detecting the strength, deformation, and energy consumption of specimens under different powder-liquid ratios and cement ratios. In addition, scanning electron microscope and mercury injection apparatus were used for an in-depth analysis on the micromorphology and pore structure features of PCC under different powder-liquid ratios and cement ratios to explore the influence of powder-liquid ratio and cement ratio of the micromechanical properties of PCC. The results showed that, with the increase of powder-liquid ratio and cement ratio, the constant elongation adhesion strength of PCC decreased, and, at a high powder-liquid ratio (0.55) or a high cement ratio (0.5), the constant elongation adhesion strength of PCC completely disappeared. Meanwhile, with the increase of powder-liquid ratio and cement ratio, the tensile shear strength of PCC increased, while the deformation capacity of PCC decreased. The optimal ranges of powder-liquid ratio and cement ratio for PCC were 0.35–0.4 and 0.3-0.4, respectively. Furthermore, the increased powder-liquid ratio and cement ratio made the total pore volume decreased and pore structure refined, which improved the compactness of PCC, thus influencing the performance of PCC macroscopically. An achievement for the study is a flexible composite material, which was formulated with the polymer film as continuous base phase, as well as the inorganic composition and cement hydrates as dispersion phase. The material can effectively improve the economy and practicability of cementation of fissures for airfield pavement.
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The study explored the effects of powder-liquid ratio and cement ratio on the mechanical properties of PCC through detecting the strength, deformation, and energy consumption of specimens under different powder-liquid ratios and cement ratios. In addition, scanning electron microscope and mercury injection apparatus were used for an in-depth analysis on the micromorphology and pore structure features of PCC under different powder-liquid ratios and cement ratios to explore the influence of powder-liquid ratio and cement ratio of the micromechanical properties of PCC. The results showed that, with the increase of powder-liquid ratio and cement ratio, the constant elongation adhesion strength of PCC decreased, and, at a high powder-liquid ratio (0.55) or a high cement ratio (0.5), the constant elongation adhesion strength of PCC completely disappeared. Meanwhile, with the increase of powder-liquid ratio and cement ratio, the tensile shear strength of PCC increased, while the deformation capacity of PCC decreased. The optimal ranges of powder-liquid ratio and cement ratio for PCC were 0.35–0.4 and 0.3-0.4, respectively. Furthermore, the increased powder-liquid ratio and cement ratio made the total pore volume decreased and pore structure refined, which improved the compactness of PCC, thus influencing the performance of PCC macroscopically. An achievement for the study is a flexible composite material, which was formulated with the polymer film as continuous base phase, as well as the inorganic composition and cement hydrates as dispersion phase. The material can effectively improve the economy and practicability of cementation of fissures for airfield pavement.</description><identifier>ISSN: 1687-8086</identifier><identifier>EISSN: 1687-8094</identifier><identifier>DOI: 10.1155/2021/3283680</identifier><language>eng</language><publisher>New York: Hindawi</publisher><subject>Adhesion ; Adhesive strength ; Cement ; Cement hydration ; Civil engineering ; Composite materials ; Concrete ; Deformation ; Elongation ; Energy consumption ; Hydrates ; Influence ; Mechanical properties ; Mercury ; Morphology ; Polymer films ; Polymers ; Shear strength ; Shear tests</subject><ispartof>Advances in civil engineering, 2021, Vol.2021 (1)</ispartof><rights>Copyright © 2021 Zhe Huang et al.</rights><rights>Copyright © 2021 Zhe Huang et al. 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Meanwhile, with the increase of powder-liquid ratio and cement ratio, the tensile shear strength of PCC increased, while the deformation capacity of PCC decreased. The optimal ranges of powder-liquid ratio and cement ratio for PCC were 0.35–0.4 and 0.3-0.4, respectively. Furthermore, the increased powder-liquid ratio and cement ratio made the total pore volume decreased and pore structure refined, which improved the compactness of PCC, thus influencing the performance of PCC macroscopically. An achievement for the study is a flexible composite material, which was formulated with the polymer film as continuous base phase, as well as the inorganic composition and cement hydrates as dispersion phase. 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subjects Adhesion
Adhesive strength
Cement
Cement hydration
Civil engineering
Composite materials
Concrete
Deformation
Elongation
Energy consumption
Hydrates
Influence
Mechanical properties
Mercury
Morphology
Polymer films
Polymers
Shear strength
Shear tests
title Study on the Effects of Powder-Liquid Ratio and Cement Ratio on Mechanical Properties and Microscopic Characteristics of Polymer-Cement Composite
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