Application of Pavement Quality Indicator in the Construction Quality Instant Control of Asphalt Pavement

Abstract

Firstly, basing statistical results pavement quality indicator (PQI) calibration value of asphalt pavement with different aggregate types and nominal maximum aggregate sizes, the importance degree of the influence of the two factors on PQI calibration value was obtained by using the statistical software of SPSS. Then, PQI was used to detect the compaction of asphalt pavement and the detecting results of loose laying density, loose laying thickness and compaction density of asphalt mixture were used to calculate the thickness of asphalt pavement. All results above were compared and analyzed with the detect results of cores. Finally, the construction quality process control method of asphalt pavement was described. Results show that the aggregate type and material quality is the important factor to the PQI calibration value; the density of asphalt pavement detected by PQI and the thickness calculated have fine correlation with the detecting results of cores, those detecting results are dependable; The construction quality instant control of asphalt pavement could be achieved by detecting the loose laying density and thickness of asphalt mixtures.