Design method of LSCR based on mortar theory

JIANG Ying-jun; FU Zhi-peng; LI Ning-fang

doi:10.19818/j.cnki.1671-1637.2015.05.002

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JIANG Ying-jun, FU Zhi-peng, LI Ning-fang. Design method of LSCR based on mortar theory[J]. Journal of Traffic and Transportation Engineering, 2015, 15(5): 8-14. doi: 10.19818/j.cnki.1671-1637.2015.05.002

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JIANG Ying-jun, FU Zhi-peng, LI Ning-fang. Design method of LSCR based on mortar theory[J]. Journal of Traffic and Transportation Engineering, 2015, 15(5): 8-14. doi: 10.19818/j.cnki.1671-1637.2015.05.002

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Design method of LSCR based on mortar theory

doi: 10.19818/j.cnki.1671-1637.2015.05.002

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

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Author Bio:
JIANG Ying-jun (1975-), male, professor, PhD, +86-29-62630078, jyj@chd.edu.cn
Received Date: 2015-04-09
Publish Date: 2015-10-25

Abstract

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

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References

[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]	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, technical specifications for construction of highway roadbases[S]. (in Chinese)
[5]	TENG Xu-qiu. Mixture design and pavement performance of lime-fly ash stabilized aggregates[D]. Xi'an: Chang'an University, 2003. (in Chinese)
[6]	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]	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]	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]	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]	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]	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]	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]	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]	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]	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, specifications for design and construction of cement stabilized macadam base VVTM[S]. (in Chinese)
[17]	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]	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

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Design method of LSCR based on mortar theory

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