Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness

Weiqun Cai; Jian Yin; Songyun Wu; Chunning Deng; Fen Yang; Linchen Li; Jiongjun Yuan

doi:doi:10.11648/j.ijtet.20190504.17

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Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness

Weiqun Cai, Jian Yin, Songyun Wu, Chunning Deng, Fen Yang, Linchen Li, Jiongjun Yuan

Published in International Journal of Transportation Engineering and Technology (Volume 5, Issue 4)

Received: 28 November 2019 Accepted: 11 December 2019 Published: 24 December 2019

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Abstract

In this study, laboratory tests were conducted to investigate the mechanical behaviors of cement mortars incorporated with different admixtures, such as polypropylene fiber (PP), slag, silica fume and fly ash. Orthogonal tests were designed to evaluate the effects of the admixtures on the brittleness. The flexural strengths and the compressive-flexural ratios were selected to evaluate the brittleness. The optimal proportion can be obtained when PP content was 1.6 kg/m3, and the content of fly ash, slag and silica fume was 10%, 20% and 3% of the cement content respectively. Using the optimal proportion, the 3d flexural strength of cement mortar was 5.65 MPa, which was 19% larger than the specimens without the addition of admixtures; the compressive-flexural ratio was 4.1, which was reduced by 19% in contrast to the control group. The flexural strength at 28d was 9.04 MPa, which was 13% higher than the control group; and the compressive-flexural ratio was 4.21, decreasing 24% compared to the control group. SEM technology was utilized to characterize the evolution of the microstructure induced by the addition of mineral admixtures and PP fiber. Results showed that mineral admixtures made the mortars denser, and the PP fiber formed a cross-linking structure, improving the brittle-resistance. The test results provided some guidance for the mixture design of pavement concrete with a high flexural strength and a low brittleness.

Published in	International Journal of Transportation Engineering and Technology (Volume 5, Issue 4)
DOI	10.11648/j.ijtet.20190504.17
Page(s)	103-110
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Cement Mortar, Flexural Strength, Compressive-flexural Ratio, Polypropylene Fiber, Orthogonal Test

References

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APA Style

Weiqun Cai, Jian Yin, Songyun Wu, Chunning Deng, Fen Yang, et al. (2019). Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. International Journal of Transportation Engineering and Technology, 5(4), 103-110. https://doi.org/10.11648/j.ijtet.20190504.17

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ACS Style

Weiqun Cai; Jian Yin; Songyun Wu; Chunning Deng; Fen Yang, et al. Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. Int. J. Transp. Eng. Technol. 2019, 5(4), 103-110. doi: 10.11648/j.ijtet.20190504.17

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AMA Style

Weiqun Cai, Jian Yin, Songyun Wu, Chunning Deng, Fen Yang, et al. Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. Int J Transp Eng Technol. 2019;5(4):103-110. doi: 10.11648/j.ijtet.20190504.17

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@article{10.11648/j.ijtet.20190504.17,
  author = {Weiqun Cai and Jian Yin and Songyun Wu and Chunning Deng and Fen Yang and Linchen Li and Jiongjun Yuan},
  title = {Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness},
  journal = {International Journal of Transportation Engineering and Technology},
  volume = {5},
  number = {4},
  pages = {103-110},
  doi = {10.11648/j.ijtet.20190504.17},
  url = {https://doi.org/10.11648/j.ijtet.20190504.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijtet.20190504.17},
  abstract = {In this study, laboratory tests were conducted to investigate the mechanical behaviors of cement mortars incorporated with different admixtures, such as polypropylene fiber (PP), slag, silica fume and fly ash. Orthogonal tests were designed to evaluate the effects of the admixtures on the brittleness. The flexural strengths and the compressive-flexural ratios were selected to evaluate the brittleness. The optimal proportion can be obtained when PP content was 1.6 kg/m3, and the content of fly ash, slag and silica fume was 10%, 20% and 3% of the cement content respectively. Using the optimal proportion, the 3d flexural strength of cement mortar was 5.65 MPa, which was 19% larger than the specimens without the addition of admixtures; the compressive-flexural ratio was 4.1, which was reduced by 19% in contrast to the control group. The flexural strength at 28d was 9.04 MPa, which was 13% higher than the control group; and the compressive-flexural ratio was 4.21, decreasing 24% compared to the control group. SEM technology was utilized to characterize the evolution of the microstructure induced by the addition of mineral admixtures and PP fiber. Results showed that mineral admixtures made the mortars denser, and the PP fiber formed a cross-linking structure, improving the brittle-resistance. The test results provided some guidance for the mixture design of pavement concrete with a high flexural strength and a low brittleness.},
 year = {2019}
}

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TY  - JOUR
T1  - Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness
AU  - Weiqun Cai
AU  - Jian Yin
AU  - Songyun Wu
AU  - Chunning Deng
AU  - Fen Yang
AU  - Linchen Li
AU  - Jiongjun Yuan
Y1  - 2019/12/24
PY  - 2019
N1  - https://doi.org/10.11648/j.ijtet.20190504.17
DO  - 10.11648/j.ijtet.20190504.17
T2  - International Journal of Transportation Engineering and Technology
JF  - International Journal of Transportation Engineering and Technology
JO  - International Journal of Transportation Engineering and Technology
SP  - 103
EP  - 110
PB  - Science Publishing Group
SN  - 2575-1751
UR  - https://doi.org/10.11648/j.ijtet.20190504.17
AB  - In this study, laboratory tests were conducted to investigate the mechanical behaviors of cement mortars incorporated with different admixtures, such as polypropylene fiber (PP), slag, silica fume and fly ash. Orthogonal tests were designed to evaluate the effects of the admixtures on the brittleness. The flexural strengths and the compressive-flexural ratios were selected to evaluate the brittleness. The optimal proportion can be obtained when PP content was 1.6 kg/m3, and the content of fly ash, slag and silica fume was 10%, 20% and 3% of the cement content respectively. Using the optimal proportion, the 3d flexural strength of cement mortar was 5.65 MPa, which was 19% larger than the specimens without the addition of admixtures; the compressive-flexural ratio was 4.1, which was reduced by 19% in contrast to the control group. The flexural strength at 28d was 9.04 MPa, which was 13% higher than the control group; and the compressive-flexural ratio was 4.21, decreasing 24% compared to the control group. SEM technology was utilized to characterize the evolution of the microstructure induced by the addition of mineral admixtures and PP fiber. Results showed that mineral admixtures made the mortars denser, and the PP fiber formed a cross-linking structure, improving the brittle-resistance. The test results provided some guidance for the mixture design of pavement concrete with a high flexural strength and a low brittleness.
VL  - 5
IS  - 4
ER  -

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Author Information

Weiqun Cai

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Jian Yin

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Songyun Wu

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Chunning Deng

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Fen Yang

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Linchen Li

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China
Jiongjun Yuan

College of Civil Engineering, Central South University of Forestry and Technology, Changsha, China

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APA Style

Weiqun Cai, Jian Yin, Songyun Wu, Chunning Deng, Fen Yang, et al. (2019). Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. International Journal of Transportation Engineering and Technology, 5(4), 103-110. https://doi.org/10.11648/j.ijtet.20190504.17

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ACS Style

Weiqun Cai; Jian Yin; Songyun Wu; Chunning Deng; Fen Yang, et al. Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. Int. J. Transp. Eng. Technol. 2019, 5(4), 103-110. doi: 10.11648/j.ijtet.20190504.17

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AMA Style

Weiqun Cai, Jian Yin, Songyun Wu, Chunning Deng, Fen Yang, et al. Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness. Int J Transp Eng Technol. 2019;5(4):103-110. doi: 10.11648/j.ijtet.20190504.17

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@article{10.11648/j.ijtet.20190504.17,
  author = {Weiqun Cai and Jian Yin and Songyun Wu and Chunning Deng and Fen Yang and Linchen Li and Jiongjun Yuan},
  title = {Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness},
  journal = {International Journal of Transportation Engineering and Technology},
  volume = {5},
  number = {4},
  pages = {103-110},
  doi = {10.11648/j.ijtet.20190504.17},
  url = {https://doi.org/10.11648/j.ijtet.20190504.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijtet.20190504.17},
  abstract = {In this study, laboratory tests were conducted to investigate the mechanical behaviors of cement mortars incorporated with different admixtures, such as polypropylene fiber (PP), slag, silica fume and fly ash. Orthogonal tests were designed to evaluate the effects of the admixtures on the brittleness. The flexural strengths and the compressive-flexural ratios were selected to evaluate the brittleness. The optimal proportion can be obtained when PP content was 1.6 kg/m3, and the content of fly ash, slag and silica fume was 10%, 20% and 3% of the cement content respectively. Using the optimal proportion, the 3d flexural strength of cement mortar was 5.65 MPa, which was 19% larger than the specimens without the addition of admixtures; the compressive-flexural ratio was 4.1, which was reduced by 19% in contrast to the control group. The flexural strength at 28d was 9.04 MPa, which was 13% higher than the control group; and the compressive-flexural ratio was 4.21, decreasing 24% compared to the control group. SEM technology was utilized to characterize the evolution of the microstructure induced by the addition of mineral admixtures and PP fiber. Results showed that mineral admixtures made the mortars denser, and the PP fiber formed a cross-linking structure, improving the brittle-resistance. The test results provided some guidance for the mixture design of pavement concrete with a high flexural strength and a low brittleness.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Laboratory Investigation on Mechanical Properties of Cementitious Composites with a Low Brittleness
AU  - Weiqun Cai
AU  - Jian Yin
AU  - Songyun Wu
AU  - Chunning Deng
AU  - Fen Yang
AU  - Linchen Li
AU  - Jiongjun Yuan
Y1  - 2019/12/24
PY  - 2019
N1  - https://doi.org/10.11648/j.ijtet.20190504.17
DO  - 10.11648/j.ijtet.20190504.17
T2  - International Journal of Transportation Engineering and Technology
JF  - International Journal of Transportation Engineering and Technology
JO  - International Journal of Transportation Engineering and Technology
SP  - 103
EP  - 110
PB  - Science Publishing Group
SN  - 2575-1751
UR  - https://doi.org/10.11648/j.ijtet.20190504.17
AB  - In this study, laboratory tests were conducted to investigate the mechanical behaviors of cement mortars incorporated with different admixtures, such as polypropylene fiber (PP), slag, silica fume and fly ash. Orthogonal tests were designed to evaluate the effects of the admixtures on the brittleness. The flexural strengths and the compressive-flexural ratios were selected to evaluate the brittleness. The optimal proportion can be obtained when PP content was 1.6 kg/m3, and the content of fly ash, slag and silica fume was 10%, 20% and 3% of the cement content respectively. Using the optimal proportion, the 3d flexural strength of cement mortar was 5.65 MPa, which was 19% larger than the specimens without the addition of admixtures; the compressive-flexural ratio was 4.1, which was reduced by 19% in contrast to the control group. The flexural strength at 28d was 9.04 MPa, which was 13% higher than the control group; and the compressive-flexural ratio was 4.21, decreasing 24% compared to the control group. SEM technology was utilized to characterize the evolution of the microstructure induced by the addition of mineral admixtures and PP fiber. Results showed that mineral admixtures made the mortars denser, and the PP fiber formed a cross-linking structure, improving the brittle-resistance. The test results provided some guidance for the mixture design of pavement concrete with a high flexural strength and a low brittleness.
VL  - 5
IS  - 4
ER  -

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