|Table of Contents|

[1] Ran Jin, Zhang Jinxi, Yang Mijia, et al. Controlled low-strength material incorporating recycled fineaggregate from urban red brick based construction waste [J]. Journal of Southeast University (English Edition), 2017, 33 (4): 496-501. [doi:10.3969/j.issn.1003-7985.2017.04.017]
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Controlled low-strength material incorporating recycled fineaggregate from urban red brick based construction waste()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
33
Issue:
2017 4
Page:
496-501
Research Field:
Traffic and Transportation Engineering
Publishing date:
2017-12-30

Info

Title:
Controlled low-strength material incorporating recycled fineaggregate from urban red brick based construction waste
Author(s):
Ran Jin1;  2;  Zhang Jinxi1;  Yang Mijia3;  Jia Dongdong4;  Lu Shengdi5
1Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing 100124, China
2 Key Laboratory of Expressway Maintenance Technology of Ministry of Transport(Ji’nan), Ji’nan 250102, China
3Department of Civil and Environmental Engineering, North Dakota State University, ND 58105, USA
4 Kaibo International Group Corporation, Beijing 100022, China
5Anhui Transportation Holding Group Co., Ltd., Hefei 230088, China
Keywords:
controlled low-strength material;  recycled fine aggregate from urban red brick based construction waste;  fluidity;  bleeding;  compressive strength;  durability
PACS:
U414
DOI:
10.3969/j.issn.1003-7985.2017.04.017
Abstract:
Sixteen controlled low-strength material(CLSM)mixtures with various cement-to-sand(C/Sa)ratios and water-to-solid(W/So)ratios were prepared using recycled fine aggregate from urban red brick based construction waste. The fluidity and bleeding of the fresh CLSM mixtures were measured via the modified test methods, and the hardened CLSM mixtures were then molded to evaluate their compressive strength and durability. The results show that the fluidity of the fresh CLSM mixtures is 105 to 227 mm with the corresponding bleeding rate of 3.7% to 15.5%, which increases with the increase in fluidity. After aging for 28 d, the compressive strength of the hardened CLSM mixtures reaches 1.15 to 13.96 MPa, and their strength can be further enhanced with longer curing ages. Additionally, the strength increases with the increase of the C/Sa ratio, and decreases with the increase of the W/So ratio under the same curing age. Based on the obtained compressive strength, a fitting model for accurately predicting the compressive strength of the CLSM mixtures was established, which takes into account the above two independent variables(C/Sa and W/So ratios). Moreover, the durability of the hardened CLSM mixtures is enhanced for samples with higher C/Sa ratios.

References:

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Memo

Memo:
Biographies: Ran Jin(1978—), male, graduate; Zhang Jinxi(corresponding author), male, professor, zhangjinxi@bjut.edu.cn.
Foundation items: The National Science and Technology Support Program of China(No.2014BAC07B03), the Science and Technology Project of Transportation Committee of Beijing Government(No.2016-LZJKJ-01-006), the National Natural Science Foundation of China(No.51278016).
Citation: Ran Jin, Zhang Jinxi, Yang Mijia, et al.Controlled low-strength material incorporating recycled fine aggregate from urban red brick based construction waste[J].Journal of Southeast University(English Edition), 2017, 33(4):496-501.DOI:10.3969/j.issn.1003-7985.2017.04.017.
Last Update: 2017-12-20