Abstract The influence of an early-strength agent on the frost resistance of a cement-stabilized macadam material used in road engineering was explored by mixing 5% cement into the cement mixture in accordance with the engineering design ratio. Subsequently, the cement was replaced by the early-strength agent with dosages of 0, 8, 10, 12, 14%, and 16% according to the cement dosage. All the freeze-thaw test specimens were then prepared and used in the experiment. The water absorption rate and its change trend, mass loss rate after several freeze-thaw cycles, and unconfined compressive strength before and after the freeze-thaw cycle were analyzed based on the experimental data. The frost resistance coefficient of the cement-stabilized macadam material with different early-strength agent dosages was calculated according to the experimental data. Experimental results show that the early-strength agent can reduce the water absorption rate and mass loss rate of the material and improve the unconfined compressive strength and the frost resistance coefficient before and after freezing-thawing of the material. Furthermore, the frost resistance coefficient increases as the early-strength agent dosage increases. Therefore, the early-strength agent can both enhance the construction speed in road engineering and impede the damage caused by freezing-thawing on the cement-stabilized macadam material effectively.
Fund:Supported by the National Natural Science Foundation of China (No. 51265033); the Inner Mongolia University of Technology Emphases Project (No. ZD201309)
Corresponding Authors:
SONG Yun-lian,E-mail:751904198@qq.com
E-mail: 751904198@qq.com
SONG Yun-lian,WANG Ying-dan,DING Nan. Influence of an Early-Strength Agent on the Frost Resistance of a Cement-Stabilized Material[J]. Journal of Highway and Transportation Research and Development, 2016, 10(4): 27-33.
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2016, Vol. 10 
