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Advances in Materials Science and Engineering
Volume 2017, Article ID 4628690, 9 pages
https://doi.org/10.1155/2017/4628690
Research Article

Development of a Semirigid Pavement Incorporating Ultrarapid Hardening Cement and Chemical Admixtures for Cement Grouts

1R&D Center, Tongyang Construction Materials Co., Ltd., No. 2822-1, Gimpo-dearo, Wolgot-myeon, Gimpo-si, Gyeonggi-do 10024, Republic of Korea
2R&D Center, JNTINC Co., Ltd., No. 9, Hyundaikia-ro, 830 Beon-gil, Bibong-myeon, Hwaseong-City, Gyeonggi-do 18284, Republic of Korea
3Department of Civil Engineering, Chungnam National University, Daejeon 34134, Republic of Korea

Correspondence should be addressed to Yun Yong Kim; rk.ca.unc@miknuy

Received 31 March 2017; Accepted 30 April 2017; Published 8 June 2017

Academic Editor: Xiao-Yong Wang

Copyright © 2017 Jin Wook Bang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Mechanical tests were carried out to evaluate the influence and effects of fluidity and compressive strength of cement grout on semirigid asphalt pavement. An open graded asphalt skeleton was designed in order to achieve target porosity in the range of 18~22%. In addition, four types of cement grout mixtures were produced with varying mix proportions with ultrarapid hardening cement and chemical admixtures, that is, accelerating and retarding agents. For the semirigid pavement specimens, mechanical experiments to measure properties such as porosity, flexural strength, Marshall stability, and wheel tracking resistance were carried out. The test results demonstrated that the flow time (fluidity) of cement grout is the most significant factor that determines the mechanical properties of semirigid asphalt specimens under constant condition of the open graded asphalt skeleton. For the semirigid pavement mixing proportion in the current study, it is recommended that the porosity of the open graded asphalt skeleton and flow time of cement grout should be 20% and within 12 seconds, respectively.