Effects of high-low temperature cycles on the performance of coral aggregate concrete based on field specimens and laboratory accelerated tests
文献类型：期刊论文
| 作者 | Meng, Qingshan5; Qin, Qinglong4,5; Yang, Huamei3; Wu, Wenjuan2; Zhou, Haoran4,5; Wu, Kai4,5; Shi, Yan1 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2022-03-28 |
| 卷号 | 325页码:15 |
| 关键词 | Coral aggregate concrete High-low temperature cycles Strength Crack density |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2022.126596 |
| 英文摘要 | In the high-temperature marine environment, breakwaters frequently suffer from high-low temperature cycles, which inevitably damages the performance of coral aggregate concrete (CAC). Based on field specimens and laboratory tests, in this research, the evolution of macroscopic and microscopic properties, as well as the crack density of CAC under high-low temperatures action were investigated, then the damage mechanism of CAC was revealed. The experimental results showed that the compressive strength of the specimens derived from the outside and top surface of on-site breakwater ranged from 24.07 to 55.48 MPa and from 26.26 to 43.41 MPa, respectively, and their splitting compressive strengths ranged from 1.29 to 4.65 MPa and from 1.68 to 4.49 MPa, respectively. In addition, fine cracks and swelling products can be found in the CAC. Under the indoor accelerated test of seawater cooling, the compressive strength of the indoor CAC developed in an increasing and then decreasing trend with the increase of the cycle period, whereas the splitting tensile strength kept developing in a decreasing trend, this was caused by the dual action of high-low temperatures cycles and sulfate erosion. Additionally, the interior of CAC also exhibited more calcium alumina, gypsum, and sodium sulfate crystal. Moreover, the addition of fly ash (FA), silica fume (SF), and polypropylene fiber (PF) can reduce the strength loss of CAC under high-low temperature cycles to some extent. The mathematical relationship between the relative dynamic elastic modulus of the CAC and the cycle period could be fitted by a quadratic polynomial (E-rd = a + bt + 0.5ct(2), R-2 greater than 0.99). |
| 资助项目 | Priority Research Program of the Chinese Academy of Science[XDA13010201] ; National Key Basic Research Program of China[2013CB956104] ; National Natural Science Foundation of China[41472287] ; National Natural Science Foundation of China[42107213] ; Yangtze River Water Science Research Joint Fund Key Project of the National Natural Science Foundation of China[U2040222] ; CRSRI Open Research Program[SN: CKWV2021876/KY] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000754212600003 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34485]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Huamei; Zhou, Haoran |
| 作者单位 | 1.Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China 2.Shandong Transportat Inst, Jinan 250100, Peoples R China 3.Wuchang Univ Technol, Coll Intelligent Construct, Wuhan 430223, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Qingshan,Qin, Qinglong,Yang, Huamei,et al. Effects of high-low temperature cycles on the performance of coral aggregate concrete based on field specimens and laboratory accelerated tests[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,325:15. |
| APA | Meng, Qingshan.,Qin, Qinglong.,Yang, Huamei.,Wu, Wenjuan.,Zhou, Haoran.,...&Shi, Yan.(2022).Effects of high-low temperature cycles on the performance of coral aggregate concrete based on field specimens and laboratory accelerated tests.CONSTRUCTION AND BUILDING MATERIALS,325,15. |
| MLA | Meng, Qingshan,et al."Effects of high-low temperature cycles on the performance of coral aggregate concrete based on field specimens and laboratory accelerated tests".CONSTRUCTION AND BUILDING MATERIALS 325(2022):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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