A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effectiveness of preconditioning regimes for assessing water permeability of high performance concrete
Saturating high performance concrete (HPC) on site for assessing water permeability is a challenge. This paper reports a testing programme established to assess the reliability and efficiency of two field saturation approaches, viz. vacuum saturation and ponding. The water permeability test results after applying the vacuum saturation and ponding were compared with that after incremental immersion. It is found that ponding was unable to remove the influence of moisture, while vacuum saturation can achieve this for wet concretes. Although the influence of moisture can be removed for different HPCs with high initial moisture contents by using the vacuum saturation method, it is not effective when the initial moisture content is low. The results obtained from numerical simulation model and the electrical resistance measurements after incremental immersion suggested that the water permeability of HPCs can be accurately determined if the surface region (140 mm width and 25 mm depth) is fully saturated.
Effectiveness of preconditioning regimes for assessing water permeability of high performance concrete
Saturating high performance concrete (HPC) on site for assessing water permeability is a challenge. This paper reports a testing programme established to assess the reliability and efficiency of two field saturation approaches, viz. vacuum saturation and ponding. The water permeability test results after applying the vacuum saturation and ponding were compared with that after incremental immersion. It is found that ponding was unable to remove the influence of moisture, while vacuum saturation can achieve this for wet concretes. Although the influence of moisture can be removed for different HPCs with high initial moisture contents by using the vacuum saturation method, it is not effective when the initial moisture content is low. The results obtained from numerical simulation model and the electrical resistance measurements after incremental immersion suggested that the water permeability of HPCs can be accurately determined if the surface region (140 mm width and 25 mm depth) is fully saturated.
Effectiveness of preconditioning regimes for assessing water permeability of high performance concrete
Wang, Yaocheng (author) / Yang, Kai (author) / Long, Adrian (author) / Nanukuttan, Sreejith (author) / Magee, Bryan (author) / Zhu, Xiaohong (author) / Zhang, Zhilu (author) / Yang, Changhui (author) / Basheer, Muhammed (author)
2018-11-01
Wang , Y , Yang , K , Long , A , Nanukuttan , S , Magee , B , Zhu , X , Zhang , Z , Yang , C & Basheer , M 2018 , ' Effectiveness of preconditioning regimes for assessing water permeability of high performance concrete ' , Cement and Concrete Composites , vol. 94 , pp. 126-135 . https://doi.org/10.1016/j.cemconcomp.2018.08.018
Article (Journal)
Electronic Resource
English
| BASE | 2018
Permeability Performance of High-Performance Concrete Subjected to Various Curing Regimes
| British Library Online Contents | 2001
Permeability Performance of High-Performance Concrete Subjected to Various Curing Regimes
| British Library Conference Proceedings | 2001
Effectiveness of Mineral Admixtures and Curing Regimes on Air Permeability of Concrete
| British Library Conference Proceedings | 1997