PURPOSES : For large-scale construction, such as a concrete pavement, design and construction are not entirely consistent. If the inconsistency between design and construction is very large, construction quality is significantly degraded, affecting performance life span and driving comfort. The quality of pavement construction is managed according to standards. However, it is difficult to improve construction quality as the standard measures construction quality after construction is completed. Therefore, this study developed a system to measure the construction quality of concrete pavement in real-time and presented the corresponding standards. METHODS : A basic module for simultaneously measuring the width, thickness, and roughness of the concrete pavement was designed. Based on the measurement results of the distance measurement sensor, a calibration method is presented that can remove noise. The system process was developed to measure construction quality based on location and distance data, measured in real-time using GPSs and sensors. The field application experiment was conducted and the results were analyzed. RESULTS : The measurement module is properly designed to be used in concrete pavement construction sites. Noise was removed from the distance measurement sensor results according to the presented calibration method, leaving only the wave of pavement surface irregularities. As a result of applying the system process in the field application, a reasonable level of PRI was observed. CONCLUSIONS : In the past, the width, thickness, and roughness were measured after construction was completed and, if the standard was not met, construction quality control was performed via reconstruction or repair. Through this study, it is expected that the width, thickness, and roughness of the concrete pavement can be measured in real-time and, if the standard is not met, construction quality can be immediately controlled during construction to maintain high quality.

단옥수수를 수확한 후 저장온도에 따라 맛을 유지할 수 있는 저장기간을 알아보기 위하여 보통단옥수수 2품종(Great Bell. Golden Cross Bantam)과 초당옥수수(Crisp Super Sweet 720) 1 품종을 공시하여 출사 후 20일과 25일에 수확하였다. 저장온도는 냉동(영하 20℃ ), 0, 5. 10, 15, 20, 25℃ C이었고 저장기간은 1, 3, 5. 7일이었으며 저장온도와 기간에 따른 가용성 고형물, 당함량, 맛의 노화 및 이들 상호간의 관계를 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 가용성 고형물은 10℃ 이하에서는 크게 변하지 않았으나 15℃ 이상에서는 저장기간이 길어질수록 현저히 감소하였다. 2. 전당함양은 10℃ 이하에서는 감소가 적었으나 15℃ 이상에서는 저장기간이 길어질수록 급격히 감소하였는데 fructose와 glucose보다는 수확시 함량이 많았던 sucrose가 주로 감소하였다. 3. 맛은 냉동저장하면 크게 저하되지 않으나 0℃ 에 저장한 것보다 좋지 않았다. 맛을 유지할 수 있는 저장기간은 10℃ 이하에서는 7일, 15℃ 에서는 3일, 25℃ 에서는 1~2일이었다. 4. 가용성 고형물과 맛, 전당함량과 맛과는 모두 정의 상관이 있었다.