Concrete pavement rehabilitation procedure using resonant rubblization technology and mechanical–empirical based overlay design

Abstract

43Reflective cracking distresses frequently occur on the hot mix asphalt (HMA) overlay 44 due to the movements of the underlying portland cement concrete (PCC). Rubblization was 45 proven in North America to be an effective approach among slab fracturing technologies for 46 solving the premature reflective cracking problem. This paper presents the procedure of 47 applying the rubblization technology in HMA overlay design in a research effort in China to 48 develop the Chinese standard. In the study, the validity of rubblization was analyzed by a 49 trench survey and sieve tests; the layer moduli of the composite subgrade and rubblized 50 concrete slab were determined using FWD and plate bearing tests and a conversion chart; the 51 thickness design for the HMA overlay over the rubblized PCC pavement was conducted 52 using a Chinese version Mechanistic-Empirical design process; and finally the in-service 53 monitoring over the pavements built using the developed procedure was conducted to test the 54 validity of the procedure. 55 56

A Numerical Study on the Crack Propagation of Homogenized Micro-Crack Crushing for Concrete Pavement

“…Among the old concrete-pavement-crushing and reconstruction methods, homogenized micro-crack crushing is a novel concrete-pavement-crushing technology. This method combines the advantages of multiple head breakers, impact compactors, guillotine breakers, and resonant pavement breakers, which makes full use of the bearing capacity of the original pavement and treats the corresponding problems [3][4][5][6][7][8]. When old concrete pavement is rehabilitated by homogenized micro-crack crushing technology, special mechanical equipment is used to crush the old concrete pavement.…”