A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on Mechanism of Pore Modification by Polymer Particles
In recent years, deterioration of concrete structures has become a problem, and requires maintenance and repair. The cross-sectional repair method is frequently used to repair deteriorated structures. The material used in this method must have good adhesion to concrete and durability against the deterioration factors such as carbonation, chloride penetration and water permeability. In ordinary polymer cement mortars, the polymer particles bond together and make a polymer film, which improves the mass transfer resistance. Therefore, it is often used as a cross-sectional repair material. On the other hand, new developed core-shell polymer particles have dispersibility and two-layer structure of core and shell. In some cases, the addition of this polymer has been shown to have very high mass transfer resistance to water. However, the mechanism of the performance improvement has not been understood yet. The improvement in mass transfer resistance is thought to be due to the modification of the pore, which is a mass transfer pathway. In this study, we measured the porosity and conducted mass transfer resistance, and compared core-shell polymers with various materials which densifies the pores. For example, ordinary polymers that has films and silica fume which has a pore-filling effect with fine particles. In addition, by comparing several tests and expressing the state inside the pores, we investigated the mechanism of improving mass transfer resistance when core-shell polymer is added.
Study on Mechanism of Pore Modification by Polymer Particles
In recent years, deterioration of concrete structures has become a problem, and requires maintenance and repair. The cross-sectional repair method is frequently used to repair deteriorated structures. The material used in this method must have good adhesion to concrete and durability against the deterioration factors such as carbonation, chloride penetration and water permeability. In ordinary polymer cement mortars, the polymer particles bond together and make a polymer film, which improves the mass transfer resistance. Therefore, it is often used as a cross-sectional repair material. On the other hand, new developed core-shell polymer particles have dispersibility and two-layer structure of core and shell. In some cases, the addition of this polymer has been shown to have very high mass transfer resistance to water. However, the mechanism of the performance improvement has not been understood yet. The improvement in mass transfer resistance is thought to be due to the modification of the pore, which is a mass transfer pathway. In this study, we measured the porosity and conducted mass transfer resistance, and compared core-shell polymers with various materials which densifies the pores. For example, ordinary polymers that has films and silica fume which has a pore-filling effect with fine particles. In addition, by comparing several tests and expressing the state inside the pores, we investigated the mechanism of improving mass transfer resistance when core-shell polymer is added.
Study on Mechanism of Pore Modification by Polymer Particles
Lecture Notes in Civil Engineering
Geng, Guoqing (editor) / Qian, Xudong (editor) / Poh, Leong Hien (editor) / Pang, Sze Dai (editor) / Yahiro, R. (author) / Kanda, T. (author) / Nishimura, K. (author) / Iyoda, T. (author)
Proceedings of The 17th East Asian-Pacific Conference on Structural Engineering and Construction, 2022 ; Chapter: 108 ; 1358-1365
2023-03-14
8 pages
Article/Chapter (Book)
Electronic Resource
English
Cross-sectional repair material , Polymer cement mortar , Core-shell polymer , Mass transfer resistance , Pores structure Engineering , Building Construction and Design , Structural Materials , Solid Mechanics , Sustainable Architecture/Green Buildings , Light Construction, Steel Construction, Timber Construction , Offshore Engineering
Study on Modification Mechanism of the Polymer Modified Cement Concrete
| Tema Archive | 2013
Study on Modification Mechanism of the Polymer Modified Cement Concrete
| British Library Conference Proceedings | 2013
Preferential supporting of platinum particles on pore surface using a polymer blend technique
| British Library Online Contents | 2001
Pore-Size-Specific Modification of Porous Materials
| British Library Online Contents | 1994
| TIBKAT | 1997