Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure
The capillary absorption capacity exerts an important effect on the durability of cement-based materials and is closely related to the pore structure. In this study, a variety of cement-based specimens were examined. The capillary water absorption and pore structure of the samples were determined us...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/12/4/2211 |
| _version_ | 1797482958382170112 |
|---|---|
| author | Yue Wang Liangshun Li Mingzhe An Yifan Sun Ziruo Yu Hanfeng Huang |
| author_facet | Yue Wang Liangshun Li Mingzhe An Yifan Sun Ziruo Yu Hanfeng Huang |
| author_sort | Yue Wang |
| collection | DOAJ |
| description | The capillary absorption capacity exerts an important effect on the durability of cement-based materials and is closely related to the pore structure. In this study, a variety of cement-based specimens were examined. The capillary water absorption and pore structure of the samples were determined using a gravimetric method and mercury intrusion porosimetry (MIP), respectively. The capillary water absorption coefficients for different water–binder ratios, diverse types and dosages of mineral admixtures, and various preloads were measured. The experimental results were analyzed and compared with data available in the current literature. The test results showed that the capillary water absorption performance of cement-based materials increased with an increasing water–binder ratio, first decreased and then increased with an increasing fly ash dosage, decreased with an increasing mineral power dosage, and decreased when the preload was less than a critical value and increased rapidly when the preload was greater than the critical value. The relationship between the capillary absorption coefficient and porosity was nearly linear. Water absorption by cement-based materials mainly correlated with pore diameters in the range of 10~1000 nm. The capillary water absorption coefficient increased continuously with the increase of pore fractal dimension. |
| first_indexed | 2024-03-09T22:40:01Z |
| format | Article |
| id | doaj.art-c34a300c7ac2459d9b3d1bd3530e869c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T22:40:01Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c34a300c7ac2459d9b3d1bd3530e869c2023-11-23T18:41:04ZengMDPI AGApplied Sciences2076-34172022-02-01124221110.3390/app12042211Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore StructureYue Wang0Liangshun Li1Mingzhe An2Yifan Sun3Ziruo Yu4Hanfeng Huang5School of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, ChinaThe capillary absorption capacity exerts an important effect on the durability of cement-based materials and is closely related to the pore structure. In this study, a variety of cement-based specimens were examined. The capillary water absorption and pore structure of the samples were determined using a gravimetric method and mercury intrusion porosimetry (MIP), respectively. The capillary water absorption coefficients for different water–binder ratios, diverse types and dosages of mineral admixtures, and various preloads were measured. The experimental results were analyzed and compared with data available in the current literature. The test results showed that the capillary water absorption performance of cement-based materials increased with an increasing water–binder ratio, first decreased and then increased with an increasing fly ash dosage, decreased with an increasing mineral power dosage, and decreased when the preload was less than a critical value and increased rapidly when the preload was greater than the critical value. The relationship between the capillary absorption coefficient and porosity was nearly linear. Water absorption by cement-based materials mainly correlated with pore diameters in the range of 10~1000 nm. The capillary water absorption coefficient increased continuously with the increase of pore fractal dimension.https://www.mdpi.com/2076-3417/12/4/2211capillary water absorptionwater-binder ratiomineral admixturespreload levelpore structure |
| spellingShingle | Yue Wang Liangshun Li Mingzhe An Yifan Sun Ziruo Yu Hanfeng Huang Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure Applied Sciences capillary water absorption water-binder ratio mineral admixtures preload level pore structure |
| title | Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure |
| title_full | Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure |
| title_fullStr | Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure |
| title_full_unstemmed | Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure |
| title_short | Factors Influencing the Capillary Water Absorption Characteristics of Concrete and Their Relationship to Pore Structure |
| title_sort | factors influencing the capillary water absorption characteristics of concrete and their relationship to pore structure |
| topic | capillary water absorption water-binder ratio mineral admixtures preload level pore structure |
| url | https://www.mdpi.com/2076-3417/12/4/2211 |
| work_keys_str_mv | AT yuewang factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure AT liangshunli factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure AT mingzhean factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure AT yifansun factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure AT ziruoyu factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure AT hanfenghuang factorsinfluencingthecapillarywaterabsorptioncharacteristicsofconcreteandtheirrelationshiptoporestructure |