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Study on the Durability of Hydraulic Engineered Cementitious Composites
To explore the durability of hydraulic engineered cementitious composites (HECC), this article uses hydraulic concrete permeability and frost resistance tests, evaluates them in combination with mechanical tests in high-temperature resistance and self-healing tests, and explores the influence of different maximum particle sizes of sand on permeability and frost resistance. In high-temperature resistance, the thermal stability of fibers and the influence of different curing temperatures on mechanical properties are explored, and the effects of different maximum particle sizes of sand, different water–cement ratios, and different ages on self-healing performance are explored. The results show that the finer the sand used in HECC is, the better its impermeability is and the permeability coefficient is in the order of 10–6 or 10–7; the better the frost resistance is, the maximum frost resistance level can reach F300. As the curing temperature increases, the compressive and flexural strength first increase and then decrease, with a maximum increase of 43%. Compared to 0.25, a water adhesive ratio of 0.35 has better self-healing ability, with a strength ratio of 167% at 7 days and 72% at 28 days. The research results can provide a reference for further promoting the application of HECC in water conservancy engineering.
Study on the Durability of Hydraulic Engineered Cementitious Composites
To explore the durability of hydraulic engineered cementitious composites (HECC), this article uses hydraulic concrete permeability and frost resistance tests, evaluates them in combination with mechanical tests in high-temperature resistance and self-healing tests, and explores the influence of different maximum particle sizes of sand on permeability and frost resistance. In high-temperature resistance, the thermal stability of fibers and the influence of different curing temperatures on mechanical properties are explored, and the effects of different maximum particle sizes of sand, different water–cement ratios, and different ages on self-healing performance are explored. The results show that the finer the sand used in HECC is, the better its impermeability is and the permeability coefficient is in the order of 10–6 or 10–7; the better the frost resistance is, the maximum frost resistance level can reach F300. As the curing temperature increases, the compressive and flexural strength first increase and then decrease, with a maximum increase of 43%. Compared to 0.25, a water adhesive ratio of 0.35 has better self-healing ability, with a strength ratio of 167% at 7 days and 72% at 28 days. The research results can provide a reference for further promoting the application of HECC in water conservancy engineering.
Study on the Durability of Hydraulic Engineered Cementitious Composites
Lecture Notes in Civil Engineering
Li, Dayong (editor) / Zhang, Yu (editor) / Shi, Yan (author) / Wang, Yupu (author) / Li, Jiazheng (author) / Jiang, Wenguang (author)
2024-12-10
16 pages
Article/Chapter (Book)
Electronic Resource
English
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