Design of Cold Recycled Base Materials for Stable Cement Asphalt Pavement
WEI Fan
WANG Xunjie
LIU Gang
Abstract：The composition design of cold recycled base materials of asphalt pavement with cement as stabilizer is studied. The old asphalt pavement materials and new materials is analyzed and the several blending ratios of new materials and old materials is confirmed. The optimum water content and maximum dry density of recycled mixture are determined by compaction test. The 7 d unconfined compression test is used to determine the blending ratio and the amount of required cement. Finally, the mechanical properties such as splitting strength and compressive resilient modulus are analyzed. The results show that, when the blending ratio of old material and new material (10~30 mm) is 80:20 and the mass fraction of cement is 5% in the mixed material, the strength of recycled mixture is high. Under these conditions, it is also economic with good mechanical properties.
Keywords：old asphalt pavementhighway basecold recyclingmixture ratio
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 73-77 )