基于胶浆原理的二灰碎石设计方法

蒋应军; 富志鹏; 李宁方

doi:10.19818/j.cnki.1671-1637.2015.05.002

基于胶浆原理的二灰碎石设计方法

doi: 10.19818/j.cnki.1671-1637.2015.05.002

1.
长安大学特殊地区公路工程教育部重点实验室, 陕西西安 710064
2.
中交第一公路勘察设计研究院有限公司, 陕西西安 710075

基金项目:

陕西省交通科技项目 12-12K

详细信息

作者简介:
蒋应军(1975-), 男, 浙江兰溪人, 长安大学教授, 工学博士, 从事道路工程研究

中图分类号: U416.2
计量
- 文章访问数: 489
- HTML全文浏览量: 95
- PDF下载量: 751
- 被引次数: 0
出版历程
- 收稿日期: 2015-04-09
- 刊出日期: 2015-10-25

Design method of LSCR based on mortar theory

1.
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
2.
CCCC First Highway Consultants Co., Ltd., Xi'an 710075, Shaanxi, China

More Information

Author Bio:
JIANG Ying-jun (1975-), male, professor, PhD, +86-29-62630078, jyj@chd.edu.cn

摘要

摘要: 为了提高二灰碎石力学强度, 假设二灰碎石为一种三级空间网状结构的分散系, 即微分散系二灰胶浆、细分散系二灰砂浆与粗分散系二灰碎石。基于抗压强度最优原则, 采用垂直振动试验方法(VVTM)确定二灰胶浆与二灰砂浆质量比, 基于密度最大原则, 采用逐级填充法确定粗集料级配, 基于抗压强度最优原则, 确定二灰碎石中二灰砂浆用量。提出了基于胶浆原理的二灰碎石组成设计方法, 并通过室内试验与现场试验对设计方法进行性能验证。验证结果表明: 当石灰与粉煤灰质量比为2:5时, 二灰胶浆力学性能和收缩性能最佳; 当细集料质量通过率的递减系数为0.65, 二灰与细集料质量比为3:2时, 二灰砂浆力学强度最大; 当粒径范围分别为19~37.5、9.5~19、4.75~9.5 mm的集料质量比为17:11:6时, 混合粗集料密度最大; 与传统方法设计的二灰碎石试件力学强度相比, 基于胶浆原理设计的试件早期(7 d)力学强度提高10%以上, 后期(180 d)力学强度提高20%以上; 不同龄期的VVTM试件与现场芯样抗压强度之比平均为0.909, 劈裂强度之比平均为0.904, 而静压成型试件与现场芯样抗压强度之比为0.457, 劈裂强度之比为0.531, 说明VVTM比静压法设计二灰碎石更科学。
- 道路工程 /
- 胶浆原理 /
- 二灰碎石 /
- 设计方法 /
- 力学强度
Abstract: In order to improve the mechanical strength of lime-fly-ash-stabilized crushed rock(LSCR), LSCR was regard as a dispersed system with 3-level spatial reticular structures, including lime-fly-ash mortar(LAM)micro dispersed system, lime-fly-ash fine aggregate mortar(LFAM)fine dispersed system, and LSCR coarse dispersed system. Based on the principle of optimal compressive strength, the mass ratio of LAM and LFAM was computed by using vertical vibration test method(VVTM). Based on the principle of optimal density, the gradation of coarse aggregate was confirmed by using step-by-step filling method. Based on the principle of optimal compressive strength, the optimal amount of LFAM in the LSCR was determined. The design method of LSCR was proposed based on mortar theory, and its performance was verified by using indoor experiment and field experiment. Verification result indicates that the mechanical properties and shrinkage properties of LAM are optimal when the mass ratio of lime to fly-ash is 2:5. When the decreasing coefficient of quality passing rate of fine aggregate is 0.65, the mass ratio of lime-fly-ash to fine aggregate is 3:2, the mechanical strength of LFAM is maximum. When the mass ratio of aggregates with particle size range of 19-37.5, 9.5-19, 4.75-9.5 mm is 17:11:6, the density of mixing coarse aggregate is maximum. Compared with the mechanical strength of LSCR specimen designed by traditional method, the early stage(7 d)mechanical strength of LSCR specimen designed by mortar theory increases by more than 10%, and the late stage(180 d)mechanical strength increases by more than 20%. The average ratio of compressive strength of VVTM specimen to specimen of site is 0.909, and the average ratio of splitting strength is 0.904. The average ratio of compressive strength of static pressure compaction specimen to specimen of site is 0.457, and the average ratio of splitting strength is 0.531. The LSCR designed by VVTM is more scientific than static pressure method.
- road engineering /
- mortar theory /
- LSCR /
- design method /
- mechanical strength

HTML全文

图 1 二灰碎石胶浆原理

Figure 1. Mortar theory of LSCR

下载: 全尺寸图片幻灯片

图 2 二灰胶浆抗压强度

Figure 2. Compressive strengths of LAM

下载: 全尺寸图片幻灯片

图 3 二灰砂浆抗压强度

Figure 3. Compressive strengths of LFAM

下载: 全尺寸图片幻灯片

图 4 Ⅰ级填充试验结果

Figure 4. Result of gradeⅠfilling experiment

下载: 全尺寸图片幻灯片

图 5 Ⅱ级填充试验结果

Figure 5. Result of gradeⅡfilling experiment

下载: 全尺寸图片幻灯片

图 6 不同二灰砂浆与粗集料质量比的抗压强度

Figure 6. Compressive strengths for different mass ratios of LFAM to coarse aggregate

下载: 全尺寸图片幻灯片

图 7 不同龄期二灰碎石试件抗压强度

Figure 7. Compressive strengths of LSCR specimens with different ages

下载: 全尺寸图片幻灯片

图 8 不同龄期二灰碎石试件劈裂强度

Figure 8. Splitting strengths of LSCR specimens with different ages

下载: 全尺寸图片幻灯片

表 1 石灰性质测试结果

Table 1. Test results of lime character

表 2 粉煤灰颗粒组成

Table 2. Grain compositions of fly-ash

表 3 粉煤灰化学成分

Table 3. Chemical compositions of fly-ash

表 4 集料技术指标

Table 4. Technical indexes of aggregates

表 5 VVTM的工作参数

Table 5. Working parameters of VVTM

表 6 不同试件的抗压强度与劈裂强度

Table 6. Compressive strengths and splitting strengths of different specimens

表 7 二灰碎石材料组成

Table 7. Composition of LSCR with different materials

表 8 建议级配与规范级配

Table 8. Suggested gradation and standard gradation

表 9 二灰碎石试件不同龄期力学强度之比

Table 9. Mechanical strength ratios of LSCR specimens with different ages

表 10 二灰碎石力学强度

Table 10. Mechanical strengths of LSCR

参考文献(20)

[1]	BARENBERG E J, THOMPSON M R. Design, construction, and performance of lime, fly ash, and slag pavement[C]∥TRB. 61st Annual Meeting of the Transportation Research Board. Washington DC: TRB, 1982: 1-6.
[2]	SHARPE G W, DEEN R C, SOUTHGATE H F, et al. Pavement thickness designs using low-strength(Pozzolanic)base and subbase materials[J]. Transportation Research Record, 1985(1043): 122-130. https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1699&context=ktc_researchreports
[3]	李振霞, 陈渊召. 不同类型半刚性基层材料性能的试验与分析[J]. 长安大学学报: 自然科学版, 2012, 32(1): 41-46. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL201201009.htm LI Zhen-xia, CHEN Yuan-zhao. Test and analysis of properties for different types of semi-rigid base materials[J]. Jounral of Chang'an University: Natural Science Edition, 2012, 32(1): 41-46. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL201201009.htm
[4]	JTJ034—2000, 公路路面基层施工技术规范[S]. JTJ034—2000, technical specifications for construction of highway roadbases[S]. (in Chinese)
[5]	滕旭秋. 二灰碎石混合料配合比设计及路用性能研究[D]. 西安: 长安大学, 2003. TENG Xu-qiu. Mixture design and pavement performance of lime-fly ash stabilized aggregates[D]. Xi'an: Chang'an University, 2003. (in Chinese)
[6]	刘红瑛, 戴经梁. 骨架密实二灰稳定碎石混合料配合比设计方法[J]. 长安大学学报: 自然科学版, 2003, 23(2): 11-16. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200302002.htm LIU Hong-ying, DAI Jing-liang. Design method of mixture skeleton densed with lime-flyash and crushed rock[J]. Journal of Chang'an University: Natural Science Edition, 2003, 23(2): 11-16. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200302002.htm
[7]	刘红瑛, 牛长友, 王强, 等. 骨架密实型二灰稳定碎石基层路用性能[J]. 长安大学学报: 自然科学版, 2003, 23(3): 37-42. doi: 10.3321/j.issn:1671-8879.2003.03.009 LIU Hong-ying, NIU Chang-you, WANG Qiang, et al. Pavement performance of lime flyash stabilized aggregate base with skeleton dense structure[J]. Journal of Chang'an University: Natural Science Edition, 2003, 23(3): 37-42. (in Chinese) doi: 10.3321/j.issn:1671-8879.2003.03.009
[8]	蒋应军. 多级嵌挤骨架密实二灰碎石组成设计方法研究[J]. 重庆交通大学学报: 自然科学版, 2010, 29(5): 732-736. https://www.cnki.com.cn/Article/CJFDTOTAL-CQJT201005016.htm JIANG Ying-jun. Mix design method for lime-fly-ash-stabilized aggregate of multilevel dense built-in grading structure[J]. Journal of Chongqing Jiaotong University: Natural Science, 2010, 29(5): 732-736. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-CQJT201005016.htm
[9]	姜爱锋, 任惠清. 二灰碎石组成配合比设计[J]. 同济大学学报: 自然科学版, 1999, 27(3): 309-313. https://www.cnki.com.cn/Article/CJFDTOTAL-TJDZ199903012.htm JIANG Ai-feng, REN Hui-qing. Mixture design of lime-flyash stabilized aggregate[J]. Journal of Tongji University: Natural Science, 1999, 27(3): 309-313. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TJDZ199903012.htm
[10]	滕旭秋, 陈忠达. 二灰砂浆配合比设计方法[J]. 长安大学学报: 自然科学版, 2005, 25(3): 37-40. doi: 10.3321/j.issn:1671-8879.2005.03.009 TENG Xu-qiu, CHEN Zhong-da. Mixture design method for lime-fly ash mortar[J]. Journal of Chang'an University: Natural Science Edition, 2005, 25(3): 37-40. (in Chinese) doi: 10.3321/j.issn:1671-8879.2005.03.009
[11]	车法, 陈拴发, 朱金凤, 等. 骨架密实型二灰稳定碎石配合比设计方法研究[J]. 河北工业大学学报, 2010, 39(2): 96-99. doi: 10.3969/j.issn.1007-2373.2010.02.023 CHE Fa, CHEN Shuan-fa, ZHU Jin-feng, et al. Research on mixture component design of "skeleton-closed" lime-fly ash stabilized aggregate[J]. Journal of Hebei University of Technology, 2010, 39(2): 96-99. (in Chinese) doi: 10.3969/j.issn.1007-2373.2010.02.023
[12]	师晖军. 高性能二灰稳定碎石混合料设计和路用性能研究[J]. 筑路机械与施工机械化, 2014, 31(8): 69-72. doi: 10.3969/j.issn.1000-033X.2014.08.029 SHI Hui-jun. Research on mixture design and pavement performance of high performance lime fly-ash stabilized aggregate[J]. Road Machinery and Construction Mechanization, 2014, 31(8): 69-72. (in Chinese) doi: 10.3969/j.issn.1000-033X.2014.08.029
[13]	陈磊, 滕桃居, 石祥. 纤维增强二灰稳定碎石基层干缩性能的试验研究[J]. 交通标准化, 2013(24): 63-65. https://www.cnki.com.cn/Article/CJFDTOTAL-JTBH201324019.htm CHEN Lei, TENG Tao-ju, SHI Xiang. Experimental study on fiber reinforcing dry shrinkage performance of two ash stabilization macadam base[J]. Transportation Standardization, 2013(24): 63-65. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JTBH201324019.htm
[14]	马士宾, 刘俊琴, 郭建宁, 等. 骨架密实型二灰碎石基层的收缩性能[J]. 重庆交通大学学报: 自然科学版, 2013, 32(2): 215-219. doi: 10.3969/j.issn.1674-0696.2013.02.10 MA Shi-bin, LIU Jun-qin, GUO Jian-ning, et al. Research on shrinkage performance of dense skeleton based on lime fly-ash stabilized aggregate[J]. Journal of Chongqing Jiaotong University: Natural Science, 2013, 32(2): 215-219. (in Chinese) doi: 10.3969/j.issn.1674-0696.2013.02.10
[15]	魏连雨, 王涛, 马士宾. 非标准养生温度下二灰稳定碎石路用性能试验研究[J]. 公路, 2012(1): 34-38. https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL201201009.htm WEI Lian-yu, WANG Tao, MA Shi-bin. Test and study on road performance of lime-flyash stabilized aggregates under non-standard curing temperature[J]. Highway, 2012(1): 34-38. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL201201009.htm
[16]	DB 61/T 529—2011, 垂直振动法水泥稳定碎石设计施工技术规范[S]. DB 61/T 529—2011, specifications for design and construction of cement stabilized macadam base VVTM[S]. (in Chinese)
[17]	李明杰, 蒋应军, 张俊杰, 等. 半刚性基层材料振动试验方法[J]. 交通运输工程学报, 2010, 10(1): 7-12. http://transport.chd.edu.cn/article/id/201001002 LI Ming-jie, JIANG Ying-jun, ZHANG Jun-jie, et al. Vibration test method of semi-rigid base course material[J]. Journal of Traffic and Transportation Engineering, 2010, 10(1): 7-12. (in Chinese) http://transport.chd.edu.cn/article/id/201001002
[18]	JIANG Y J, FAN L F. An investigation of mechanical behavior of cement-stabilized crushed rock material using different compaction methods[J]. Construction and Building Materials, 2013, 48(11): 508-515. https://www.sciencedirect.com/science/article/pii/S0950061813006314
[19]	JIANG Ying-jun, WONG L N Y, REN Jiao-long. A numerical test method of California bearing ratio on graded crushed rocks using particle flow modeling[J]. Journal of Traffic and Transportation Engineering: English Edition, 2015, 2(2): 107-115. doi: 10.1016/j.jtte.2015.02.004
[20]	田波, 权磊, 牛开民. 不同基层类型水泥混凝土路面温度翘曲结构试验与理论分析[J]. 中国公路学报, 2014, 27(6): 17-26. doi: 10.3969/j.issn.1001-7372.2014.06.003 TIAN Bo, QUAN Lei, NIU Kai-min. Structural experiment and theoretical analysis of thermal curling in JPCP with different base types[J]. China Journal of Highway and Transport, 2014, 27(6): 17-26. (in Chinese) doi: 10.3969/j.issn.1001-7372.2014.06.003