RESEARCH ON DEFORMATION OF MORTAR WITH NOVEL EXPANSIVE AGENT

Zhang Hongbo; Gao Peiwei; Geng Fei; Chen Xiong; Zhao Jie

doi:10.13204/j.gyjz201207020

Volume 42 Issue 7

Dec. 2014

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Wang Gaofeng, Sun Sheng. THE RESEARCH STATUS OF INDUSTRIAL HERITAGE IN CHINA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(1): 1-3,60. doi: 10.13204/j.gyjz201301001

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Zhang Hongbo, Gao Peiwei, Geng Fei, Chen Xiong, Zhao Jie. RESEARCH ON DEFORMATION OF MORTAR WITH NOVEL EXPANSIVE AGENT[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(7): 119-123. doi: 10.13204/j.gyjz201207020

Wang Gaofeng, Sun Sheng. THE RESEARCH STATUS OF INDUSTRIAL HERITAGE IN CHINA[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(1): 1-3,60. doi: 10.13204/j.gyjz201301001

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RESEARCH ON DEFORMATION OF MORTAR WITH NOVEL EXPANSIVE AGENT

doi: 10.13204/j.gyjz201207020

1.
Department of Civil Engineering,Nanjing University of Aeronautic &Astronomic,Nanjing 210016,China

Received Date: 2011-08-09
Publish Date: 2012-07-20

Abstract

Abstract

A novel expansive agent was prepared by using magnetite and dolomite tailings through certain process.The deformation properties of mortar mixed with expansive agent and fly ash were investigated. Results showed that atthe early age, the expansion speed increased obviously with the increase of hydration temperature, but at the later agethere was no obvious effect on the increase of expansion speed. The dry shrinkage of mortar can be seriouslysuppressed by both expansive agents and fly ash, and dry shrinkage tended stable at the age of 90 d. The temperaturewas an important factor for the restricted expansion of mortar, so the temperature should be strictly controlled whenusing this expansive agent. The regression analysis curve showed that the expansion properties of this expansive agentwere stable through the whole course of hydration, and there was no excessive expansion and retraction.
- expansive agent,
- concrete,
- mortar,
- deformation,
- dry shrinkage

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References(12)

References

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