海水-冻融共同作用下透水混凝土性能损伤及寿命预测
TU528; 为提高海水-冻融共同作用下透水混凝土的性能,采用正交试验方法,研究海水-冻融共同作用下矿渣(GBFS)替代率、羟丙基甲基纤维素(HPMC)掺量和聚丙烯塑料钢纤维(PPTF)掺量对透水混凝土宏观性能和微观结构的影响,运用NSGM(1,N)模型预测透水混凝土在海水-冻融共同作用后的相对动弹性模量.研究结果表明:当GBFS替代率为 20％,HPMC和PPTF掺量分别为 0.15％、0.5％时,透水混凝土的抗海水-冻融侵蚀性能最佳;海水侵蚀产生的膨胀性物质会加快裂缝的延展,PPTF的支撑锚固作用能够抑制裂缝的产生和延伸;NSGM(1,N)模型预测精度的检验指标 a 在[-3,2)内,平均...
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| Published in | 辽宁工程技术大学学报（自然科学版） Vol. 43; no. 6; pp. 699 - 710 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
辽宁工业大学 土木建筑工程学院,辽宁 锦州 121001%中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065
01.12.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1008-0562 |
| DOI | 10.11956/j.issn.1008-0562.20230461 |
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| Abstract | TU528; 为提高海水-冻融共同作用下透水混凝土的性能,采用正交试验方法,研究海水-冻融共同作用下矿渣(GBFS)替代率、羟丙基甲基纤维素(HPMC)掺量和聚丙烯塑料钢纤维(PPTF)掺量对透水混凝土宏观性能和微观结构的影响,运用NSGM(1,N)模型预测透水混凝土在海水-冻融共同作用后的相对动弹性模量.研究结果表明:当GBFS替代率为 20％,HPMC和PPTF掺量分别为 0.15％、0.5％时,透水混凝土的抗海水-冻融侵蚀性能最佳;海水侵蚀产生的膨胀性物质会加快裂缝的延展,PPTF的支撑锚固作用能够抑制裂缝的产生和延伸;NSGM(1,N)模型预测精度的检验指标 a 在[-3,2)内,平均相对误差为 Ⅱ 级误差,可用于相对动弹性模量的长期预测. |
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| AbstractList | TU528; 为提高海水-冻融共同作用下透水混凝土的性能,采用正交试验方法,研究海水-冻融共同作用下矿渣(GBFS)替代率、羟丙基甲基纤维素(HPMC)掺量和聚丙烯塑料钢纤维(PPTF)掺量对透水混凝土宏观性能和微观结构的影响,运用NSGM(1,N)模型预测透水混凝土在海水-冻融共同作用后的相对动弹性模量.研究结果表明:当GBFS替代率为 20％,HPMC和PPTF掺量分别为 0.15％、0.5％时,透水混凝土的抗海水-冻融侵蚀性能最佳;海水侵蚀产生的膨胀性物质会加快裂缝的延展,PPTF的支撑锚固作用能够抑制裂缝的产生和延伸;NSGM(1,N)模型预测精度的检验指标 a 在[-3,2)内,平均相对误差为 Ⅱ 级误差,可用于相对动弹性模量的长期预测. |
| Abstract_FL | In order to solve the problem that pervious concrete used in northern coastal cities is susceptible to seawater-freeze-thaw co-action in winter,orthogonal tests were used to investigate the effects of slag(GBFS)substitution rate,hydroxypropylmethylcellulose(HPMC)admixture,and polypropylene imitation steel fiber(PPTF)admixture on macroscopic properties and microstructural changes of the pervious concrete blocks after seawater-freeze-thaw co-action for 25,50,and 75 times,and the NSGM(1,N)model was used to predict the relative dynamic elastic modulus of pervious concrete after seawater-freeze-thaw co-action.The NSGM(1,N)model was applied to predict the relative dynamic elastic modulus of permeable concrete after seawater-freeze-thaw.The results show that the permeable concrete has the best seawater-freeze-thaw resistance when the GBFS substitution ratess 20％and the HPMC and PPTF admixture are 0.15％and 0.5％,respectively;after seawater erosion,the generation of expansive substances accelerated the crack extension,and the supportive anchoring effect of PPTF suppressed the crack generation and extension.The test index a of the prediction accuracy of the NSGM(1,N)model is in[-3,2),and the average relative error is within the range of grade Ⅱ error.The NSGM(1,N)model can be used for long-term prediction of the relative dynamic elastic modulus. |
| Author | 闫希雯 王学志 辛明 贺晶晶 |
| AuthorAffiliation | 辽宁工业大学 土木建筑工程学院,辽宁 锦州 121001%中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065 |
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| Author_FL | HE Jingjing YAN Xiwen WANG Xuezhi XIN Ming |
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| DocumentTitle_FL | Performance damage and life prediction of pervious concrete under seawater-freeze-thaw coupling |
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| Keywords | 羟丙基甲基纤维素 polypropylene plastic steel fiber(PPTF) pervious concrete 聚丙烯仿钢纤维 NSGM(1,N)model hydroxypropyl methylcellulose(HPMC) 透水混凝土 矿渣 NSGM(1,N)模型 slag sea water freeze-thaw 海水-冻融 |
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| Title | 海水-冻融共同作用下透水混凝土性能损伤及寿命预测 |
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