[1]曲美燕,马全红,许雪松.凹凸棒石黏土对水泥稳定碎石性能的影响[J].东南大学学报(自然科学版),2015,45(2):399-403.[doi:10.3969/j.issn.1001-0505.2015.02.035]
 Qu Meiyan,Ma Quanhong,Xu Xuesong.Influence of palygorskite clay on properties of cement-stabilized macadam[J].Journal of Southeast University (Natural Science Edition),2015,45(2):399-403.[doi:10.3969/j.issn.1001-0505.2015.02.035]
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凹凸棒石黏土对水泥稳定碎石性能的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第2期
页码:
399-403
栏目:
交通运输工程
出版日期:
2015-03-20

文章信息/Info

Title:
Influence of palygorskite clay on properties of cement-stabilized macadam
作者:
曲美燕1马全红1许雪松2
1东南大学化学化工学院, 南京211189; 2南京市路桥工程总公司, 南京210046
Author(s):
Qu Meiyan1 Ma Quanhong1 Xu Xuesong2
1School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
2Nanjing Road and Bridge Engineering Company, Nanjing 210046, China
关键词:
凹凸棒石黏土 水泥稳定碎石基层 力学性能 抗裂性能 微结构
Keywords:
palygorskite clay cement-stabilized macadam base strength properties crack resistance microstructure
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2015.02.035
摘要:
为了避免水泥稳定碎石基层收缩开裂的产生、延长路面使用寿命,在水泥稳定碎石基层中掺加凹凸棒石黏土来改善其力学性能与抗裂性能.试验结果表明,与空白试样相比,在各自最佳掺量下,掺X型凹凸棒石黏土、Y型凹凸棒石黏土和Y型煅烧凹凸棒石黏土的水泥稳定碎石的7 d无侧限抗压强度分别提高约5.9%,5.4%和21.5%,50 d后其干缩系数较空白试验分别减小约13.7%,7.4%和20.5%,且掺入凹凸棒石黏土后水泥稳定碎石的失水率也有一定程度的下降.采用扫描电镜观察水泥砂浆的微结构,发现凹凸棒石黏土掺入后生成较多的水化产物,形成网状结构,从而大大减少了水泥稳定碎石的收缩裂缝数量.
Abstract:
To avoid the occurrence of the shrinkage cracks of cement-stabilized macadam base and prolong the life span of pavement, palygorskite clay was mixed in cement-stabilized macadam base to improve the strength properties and crack resistance. The experimental results show that compared with the blank sample, the unconfined compressive strengths of the cement-stabilized macadam mixed by type X palygorskite clay, type Y palygorskite clay and type Y calcined palygorskite clay with the corresponding optimal contents increase by about 5.9%,5.4% and 21.5%,respectively, at the curing age of 7 d. And after 50 d, their dry-shrinkage coefficients reduce by about 13.7%, 7.4% and 20.5%, respectively. Meanwhile, the water loss rate of the cement-stabilized macadam mixed with palygorskite clay also decreases to a certain extent. The microstructure of the cement pastes mixed with palygorskite clay is observed by scanning electronic microscope. The results show that more fibrous hydration products and a net-like microstructure exist in the cement pastes mixed with palygorskite clay, inducing the great decrease of the number of the shrinkage cracks of the cement-stabilized macadam.

参考文献/References:

[1] 李清富, 张鹏, 沈捷. 聚丙烯纤维水泥稳定碎石抗裂性能研究[J]. 建筑材料学报, 2008, 11(3): 368-374.
  Li Qingfu, Zhang Peng, Shen Jie. Research on crack resistance of cement stabilized macadam reinforced with polypropylene fiber [J]. Journal of Building Materials, 2008, 11(3): 368-374.(in Chinese)
[2] 覃峰. 橡胶粉水泥稳定碎石基层收缩性能试验研究[J]. 新型建筑材料, 2009, 36(12): 32-35.
  Qin Feng. Experimental study on shrinkage properties of cement-stabilized macadam base course with rubber powder [J]. New Building Materials, 2009, 36(12): 32-35.(in Chinese)
[3] Brown S F, Thom N H, Sanders P J. A study of grid reinforced asphalt to combat reflection cracking(with discussion)[J]. Journal of the Association of Asphalt Paving Technologists, 2001, 70: 543-571.
[4] Elseifi M, Bandaru R. Cost effective prevention of reflective cracking in composite pavements [R]. Baton Rouge, Louisiana,USA: Louisiana Transportation Research Center, 2011.
[5] 交通部公路科学研究所. JTG E30—2005 公路工程水泥及水泥混凝土试验规程[S]. 北京: 中国标准出版社, 2005.
[6] 中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. GB/T 1346—2011 水泥标准稠度用水量、凝结时间、安定性检验方法[S]. 北京: 中国标准出版社, 2011.
[7] 交通部中国科学研究院. JTG E51—2009 公路工程无机结合料稳定材料试验规程[S]. 北京: 人民交通出版社, 2009.
[8] 孟浩. 水泥稳定碎石基层路用性能及质量控制技术研究[D]. 西安: 长安大学公路学院, 2012.
[9] 曾胜. 半刚性基层模量对沥青路面性能影响分析[J]. 中外公路, 2005, 25(3): 37-39.
  Zeng Sheng. Influence of modulus of semi-rigid base on the asphalt pavement performances [J]. Journal of China & Foreign Highway, 2005, 25(3): 37-39.(in Chinese)
[10] 曹恒涛, 李辉, 王迪. 基于抗开裂性能的水泥稳定碎石配比设计及路用性能研究[J]. 公路与汽运, 2013(1): 111-114.
  Cao Hengtao, Li Hui, Wang Di. The mixture design of cement stabilized macadam based on crack resistance and study on pavement performance [J]. Highways & Automotive Applications, 2013(1): 111-114.(in Chinese)
[11] 王玉倩, 潘钢华, 张菁燕. 凹凸棒石黏土在建材中的应用研究[J]. 硅酸盐通报, 2010, 29(6): 1353-1357.
  Wang Yuqian, Pan Ganghua, Zhang Jingyan. Research on application of attapulgite in Building material [J]. Bulletin of the Chinese Ceramic Society, 2010, 29(6): 1353-1357.(in Chinese)
[12] 潘钢华, 夏艺, 王然良, 等. 煅烧凹凸棒石黏土对干粉砂浆性能的影响[J]. 东南大学学报:自然科学版, 2006, 36(1): 129-133.
  Pan Ganghua, Xia Yi, Wang Ranliang, et al. Influence of calcined attapulgite clay on properties of dry-mixed mortar [J]. Journal of Southeast University:Natural Science Edition, 2006, 36(1): 129-133.(in Chinese)
[13] 罗辉, 朱宏平, 资建民, 等. 路用半刚性基层材料抗裂缝剂应用研究[J]. 建筑材料学报,2011, 14(6): 787-792.
  Luo Hui, Zhu Hongping, Zi Jianmin, et al. Application research on anti-cracking agent for semi-rigid base [J]. Journal of Building Materials, 2011, 14(6): 787-792.(in Chinese)

备注/Memo

备注/Memo:
收稿日期: 2014-10-21.
作者简介: 曲美燕(1989—),女,硕士生;马全红(联系人),女,博士,副教授,mqh@seu.edu.cn.
基金项目: 江苏省交通科学研究计划资助项目(2013-C-04).
引用本文: 曲美燕,马全红,许雪松.凹凸棒石黏土对水泥稳定碎石性能的影响[J].东南大学学报:自然科学版,2015,45(2):399-403. [doi:10.3969/j.issn.1001-0505.2015.02.035]
更新日期/Last Update: 2015-03-20