Abstract:
A concrete composition for the aggregate exposure road pavement is provided that the aggregate exposure concrete pavement structure of the excellent quality is obtained. A concrete composition for the aggregate exposure road pavement comprises the cement, the fine aggregate, and the coarse aggregate. The coarse aggregate includes the coarse aggregate which is 9.5 ~ 13.2 mm more than the coarse aggregate which is 2.36 ~ 4.75 mm. The ratio of the coarse aggregate which is 2.36 ~ 4.75 mm and the coarse aggregate which is 9.5 ~ 13.2 mm is 1 : 1 ~ 3 : 7.
Abstract:
The present invention relates to a correcting device for a guidance line of a concrete paved road capable of preventing poor flatness of concrete paved road. The correcting device for a guidance line of a concrete paved road measuring the inclinations of a plurality of steel arms arranged on both sides of the concrete paved road in the lengthwise direction at regular intervals and a guidance line installed between the steel arms. The correction device includes: a housing having the predetermined inner space and coupled to the guidance line on one side surface; an inclination sensor provided in the housing and recognizing the inclination of the guidance line; a transmitting part transmitting inclination data recognized in the inclination sensor; and a battery supplying power to the inclination sensor so that the inclination sensor can be operated. When the concrete paved road is constructed, the correction device prevents the faulty of the guidance line, thereby preventing the poor flatness of the concrete paved road by making the inclination of road to be constant in the width direction of the road.
Abstract:
PURPOSE: A self-reactive acryl-based resin composition and an acryl-based polymer concrete pavement are provided to enable construction with ultrathin layers and low temperature quick hardening and to ensure an excellent adhesive property, water resistance, durability, noise reduction, and flexibility at low temperatures. CONSTITUTION: A self-reactive acryl-based resin composition comprises 20-40 parts by weight of PMMA, 20-35 parts by weight of MMA, 20-30 parts by weight of one or more kinds of methacrylate-based monomer excluding MMA, 5-15 parts by weight of urethane acrylate monomer, 0.1-5 parts by weight of cross-linking agent, and 1-10 parts by weight of polymerization accelerator.
Abstract:
PURPOSE: A fault measuring apparatus for pavement is provided to enable the accurate measure of level difference using a high-tech laser sensor instead of an LVDT mode. CONSTITUTION: A fault measuring apparatus for pavement comprises a body(10), a displacement measuring unit(20), a signal processing unit(30), a controller(40), and a result display unit(50). The body comprises a support unit to be pressed to the asphalt surface of a road. The displacement measuring unit measures the relative displacement according to level difference of the road. The signal processing unit converts signals collected from the displacement measuring unit into digital signals.
Abstract:
본 발명은 노면의 패치 형성 구역을 구획하고, 그 안에 상기 노면의 조직에 메워질 수 있는 일정 체적의 패치 입자가 부어지는 구획부재와; 상기 구획부재 안의 패치 입자를 평탄하게 펼치는 평탄화수단과; 상기 노면에 탄력적으로 밀착되어, 상기 평탄하게 펼쳐진 패치 입자를 쓸고 가면서 패치를 정형하는 정형화수단을 포함함으로써, 노면의 평균 조직 깊이를 용이하고 신속하게 측정할 수 있게 하고, 그 정확도가 상당히 높은 노면 조직 측정기구를 개시한다. 노면, 조직, 노면 조직 깊이, MTD, 패치
Abstract:
A construction method of the aggregate exposure concrete pavement is provided that the quality of the aggregate exposure concrete pavement is improved. A construction method of the aggregate exposure concrete pavement comprises following steps: a concrete placing step applying the concrete; a making sample sheet step making specimen by the same material as the poured concrete; a surface finishing step finishing the surface of the poured concrete; a retarder scattering step sprinkling retarder the surface of the concrete; a penetration resistance stress evaluation step measuring the penetration resistance stress of specimen; an aggregate exposure step scratching the surface of the concrete and exposes aggregate.