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摘要: 根据水泥混凝土中粗集料的作用, 引入了集料填充比参数来表征粗集料的级配组成结构与集料颗粒之间的关系。以粒子干涉理论和颗粒填充理论为基础, 参考体积法设计思想, 提出了水泥混凝土粗集料嵌锁骨架结构级配组成设计方法, 并编制了设计软件。根据试验工程水泥混凝土设计要求, 应用设计软件确定了粗集料级配组成和嵌锁密实水泥混凝土设计配合比, 并进行了混凝土性能试验验证。试验结果表明: 应用设计软件直接确定的嵌锁骨架结构粗集料级配组成, 比《公路水泥混凝土路面施工技术规范》 (JTG F30—2003) 推荐的级配范围下限偏粗, 整体骨架结构更好; 嵌锁密实水泥混凝土的坍落度为25 mm, 满足10~30 mm的工作性设计要求; 28 d弯拉强度为7.9 MPa, 大于配制弯拉强度7.7 MPa, 满足设计强度要求; 应用快冻法试验得出的混凝土最大抗冻循环次数为250次, 抗冻耐久性指数为49.2%, 满足寒冷地区200次抗冻循环的要求。Abstract: According to the roles of coarse aggregate in cement concrete, the aggregate filling ratio was put forward to present the relationship between coarse aggregate gradation structure and aggregate particle.Based on particle interference theory and particle filling theory, the design idea of volumetric method was consulted, the gradation design method of coarse aggregate with interlocking skeleton structure for cement concrete was put forward, and the corresponding design software was developed.On the basis of cement concrete design requirements of testing project, the coarse aggregate gradation was calculated, and the design mix proportion of interlocking-dense cement concrete was determined by using software.Furthermore, the concrete performances were tested and verified.Test result indicates that the coarse aggregate gradation with interlocking skeleton structure directly determined by using the software is more coarse than the lower limit of the gradation range recommended by the technical specification for construction of highway cement concrete pavements (JTG F30—2003), and its whole skeleton structure is better.The slump of interlocking-dense cement concrete is 25 mm and meets the workability requirement 10 to 30 mm.The 28 days flexural strength is 7.9 MPa, which is greater than the preparation strength 7.7 MPa and meets the design strength requirements.The maximum number of frost cycles tested by using quick freezing method is 250, and the froze-resistance index is 49.2%, which meets the frost cycles requirement 200 for cold region.
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Key words:
- pavement engineering /
- cement concrete /
- interlocking-dense /
- coarse aggregate /
- gradation /
- design method
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[1] 曹明莉. 混凝土架构模型研究[D]. 大连: 大连理工大学, 2009.CAO Ming-li. Research on concrete framework and structure model[D]. Dalian: Dalian University of Technology, 2009. (in Chinese) [2] 王安成. 粗骨料架构特性与架构混凝土研究[D]. 大连: 大连理工大学, 2006.WANG An-cheng. Coarse frame characteristic and research on frame concrete[D]. Dalian: Dalian University of Technology, 2006. (in Chinese) [3] 程伟峰. 混凝土架构模型的数值模拟研究[D]. 大连: 大连理工大学, 2008.CHENG Wei-feng. Research on concrete frame and structure by numerical simulation[D]. Dalian: Dalian University of Technology, 2008. (in Chinese) [4] 杜小婷, 赵卫东. 超薄水泥混凝土路面结构与材料设计研究[J]. 筑路机械与施工机械化, 2010, 27 (3): 28-33. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003015.htmDU Xiao-ting, ZHAO Wei-dong. Research on structure and material design for ultra-thin whitetopping pavement[J]. Road Machinery and Construction Mechanization, 2010, 27 (3): 28-33. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003015.htm [5] 徐永杰, 崔金福, 周庆坡, 等. 通过级配与结构对比分析SMA的路用性能[J]. 筑路机械与施工机械化, 2008, 25 (12): 41-43. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200812044.htmXU Yong-jie, CUI Jin-fu, ZHOU Qing-po, et al. Analysison pavement performance of SMA by comparison of gradation and structure[J]. Road Machinery and Construction Mechanization, 2008, 25 (12): 41-43. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200812044.htm [6] 陈忠达, 袁万杰, 高春海. 多级嵌挤密实级配设计方法研究[J]. 中国公路学报, 2006, 19 (1): 32-37. doi: 10.3321/j.issn:1001-7372.2006.01.007CHENZhong-da, YUAN Wan-jie, GAO Chun-hai. Research on design method of multilevel dense built-in gradation[J]. China Journal of Highway and Transport, 2006, 19 (1): 32-37. (in Chinese) doi: 10.3321/j.issn:1001-7372.2006.01.007 [7] 汪海年, 郝培文, 肖庆一, 等. 粗集料棱角性的图像评价方法[J]. 东南大学学报: 自然科学版, 2008, 38 (4): 637-641. doi: 10.3321/j.issn:1001-0505.2008.04.018WANG Hai-nian, HAO Pei-wen, XIAO Qing-yi, et al. Digital image evaluation method for angularity of coarse aggregates[J]. Journal of Southeast University: Natural Science Edition, 2008, 38 (4): 637-641. (in Chinese) doi: 10.3321/j.issn:1001-0505.2008.04.018 [8] 林辉. 基于数字图像处理技术的粗集料形状特征量化研究[D]. 长沙: 湖南大学, 2007.LIN Hui. Quantitative study of shape characteristics for coarse aggregate based on digital image processing[D]. Changsha: Hunan University, 2007. (in Chinese) [9] 肖维, 王晓磊. 多级嵌挤密实结构沥青混合料压实特性[J]. 筑路机械与施工机械化, 2007, 24 (3): 25-27. doi: 10.3969/j.issn.1000-033X.2007.03.010XIAO Wei, WANG Xiao-lei. Research on rolled-compactness performance of multilevel interlocked-dense type asphalt mixture[J]. Road Machinery and Construction Mechanization, 2007, 24 (3): 25-27. (in Chinese) doi: 10.3969/j.issn.1000-033X.2007.03.010 [10] 左文军. 配比设计与级配调试现场速解方法研究[J]. 筑路机械与施工机械化, 2005, 22 (4): 25-28. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200504011.htmZUO Wen-jun. Rapid calculation research of proportion and gradation adjustment in situation[J]. Road Machinery and Construction Mechanization, 2005, 22 (4): 25-28. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200504011.htm [11] 翁兴中, 王文杰, 党明杰, 等. 道面水泥混凝土粗集料分形特征[J]. 混凝土, 2010 (9): 60-62. https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201009025.htmWENG Xing-zhong, WANG Wen-jie, DANG Ming-jie, et al. Coarse aggregate fractal character of airport pavement cement concrete[J]. Concrete, 2010 (9): 60-62. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201009025.htm [12] 马骉, 师延强, 田尔布, 等. 嵌锁密实水泥混凝土的强度特性试验[J]. 长安大学学报: 自然科学版, 2010, 30 (6): 6-10. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL201006003.htmMA Biao, SHI Yan-qiang, TIAN Er-bu, et al. Test on strength characteristics of interlocking-dense cement concrete[J]. Journal of Chang an University: Natural Science Edition, 2010, 30 (6): 6-10. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL201006003.htm [13] 马骉, 田尔布, 路学敏, 等. 水泥混凝土粗集料嵌锁密实结构试验分析[J]. 中外公路, 2008, 28 (6): 217-220. https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200806060.htmMA Biao, TIAN Er-bu, LU Xue-min, et al. Experiment analysis on coarse aggregate gradation of interlocking-dense structure of cement concrete[J]. Journal of China and Foreign Highway, 2008, 28 (6): 217-220. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200806060.htm [14] 田尔布. 嵌锁密实型水泥混凝土配合比设计方法研究[D]. 西安: 长安大学, 2008.TIAN Er-bu. Research on mix design methods of interloc-king-dense cement concrete[D]. Xian: Changan University, 2008. (in Chinese) [15] 田尔布, 马骉, 路学敏, 等. 嵌锁密实型水泥混凝土粗集料级配振动分析[J]. 混凝土, 2008 (3): 77-79, 83. https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF200803030.htmTIAN Er-bu, MA Biao, LU Xue-min, et al. Vibration analysis on coarse aggregate gradation of interlocking-dense cement concrete[J]. Concrete, 2008 (3): 77-79, 83. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF200803030.htm [16] 李炜, 马骉. 超薄水泥混凝土路面研究与应用[J]. 筑路机械与施工机械化, 2010, 27 (3): 18-21. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003013.htmLI Wei, MA Biao. Research and application of ultra-thin whitetopping pavement[J]. Road Machinery and Construction Mechanization, 2010, 27 (3): 18-21. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003013.htm [17] 戴学臻, 蒋应军, 任皎龙, 等. 集料CBR颗粒流模拟与强嵌挤粗集料骨架级配设计[J]. 交通运输工程学报, 2011, 11 (3): 10-15. http://transport.chd.edu.cn/article/id/201103003DAI Xue-zhen, JIANG Ying-jun, REN Jiao-long. CBR particle flow simulation of aggregate and design of coarse aggregate skeleton gradation with strong interlocked force[J]. Journal of Traffic and Transportation Engineering, 2011, 11 (3): 10-15. (in Chinese) http://transport.chd.edu.cn/article/id/201103003 [18] 周怀治, 原驰. 超薄水泥混凝土路面修筑养护技术研究[J]. 筑路机械与施工机械化, 2010, 27 (3): 22-28. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003014.htmZHOU Huai-zhi, YUAN Chi. Research on ultra-thin white-topping pavement for road maintenance[J]. Road Machinery and Construction Mechanization, 2010, 27 (3): 22-28. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201003014.htm [19] 程斌, 陈博. 水泥混凝土路面早期破坏的成因及预防措施[J]. 筑路机械与施工机械化, 2009, 26 (6): 58-59. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200906029.htmCHENG Bin, CHEN Bo. Cause and precaution of early damage of cement concrete pavement[J]. Road Machinery and Construction Mechanization, 2009, 26 (6): 58-59. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX200906029.htm -
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