Mechanical and Permeability Characteristics of Latex-Modified Pre-Packed Pavement Repair Concrete as a Function of the Rapid-Set Binder Content

Materials

Jae-Woong Han³  Ji-Hong Jeon¹  Chan-Gi Park² 

[1] Department of Environmental Engineering, Andong National University, 1375 Gyeongdong Street, Andong 760-749, Korea;;Department of Rural Construction Engineering, Koungju National University, Yesan 340-702, KoreaDepartment of Bio-Industry Engineering, Koungju National University, Yesan 340-702, Korea;

关键词: durability;    mechanical properties;    latex polymer;    pavement repair concrete;    rapid-set cement binder;   

DOI  :  10.3390/ma8105339

来源: mdpi

【 摘 要 】

We evaluated the strength and durability characteristics of latex-polymer-modified, pre-packed pavement repair concrete (LMPPRC) with a rapid-set binder. The rapid-set binder was a mixture of rapid-set cement and silica sand, where the fluidity was controlled using a latex polymer. The resulting mix exhibited a compressive strength of ≥21 MPa and a flexural strength of ≥3.5 MPa after 4 h of curing (i.e., the traffic opening term for emergency repairs of pavement). The ratio of latex polymer to rapid-set binder material was varied through 0.40, 0.33, 0.29, and 0.25. Mechanical characterization revealed that the mechanical performance, permeability, and impact resistance increased as the ratio of latex polymer to rapid-set binder decreased. The mixture exhibited a compressive strength of ≥21 MPa after 4 h when the ratio of latex polymer to rapid-set binder material was ≤0.29. The mixture exhibited a flexural strength of ≥3.5 MPa after 4 h when the ratio of latex polymer to rapid-set binder material was ≤0.33. The permeability resistance to chloride ions satisfied 2000 C after 7 days of curing for all ratios. The ratio of latex polymer to rapid-set binder material that satisfied all conditions for emergency pavement repair was ≤0.29.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.