LD138 Highway Roadbed and Pavement Testing Sand Laying Instrument Introduction: Electric sanding machine is used to detect and evaluate the macroscopic roughness and anti-skid ability of road surfaces Electric sanding machine is a testing instrument, please read the manual carefully before use. And it should be operated by experimental personnel to avoid injury caused by improper operation. For more information, please contact our customer service personnel. The electric sanding machine is provided by Shanghai Rongjida Instrument Technology Co., Ltd. The equipment has a one-year warranty period. If there are any quality problems with the product within one year, the supplier is responsible for free maintenance. If due to improper operation or human damage, our company should also provide repair and replacement services, and the resulting costs will be charged at our discretion. characteristic: Easy to operate, convenient to use, and avoids errors caused by human factors. (1) Brush the testing site clean with a brush, with an area larger than the sand spreading device. (2) Place the sand spreader steadily along the longitudinal direction of the road and move the sand leakage to the end. (3) Following the same steps as (2) to (5) in H2.3.2, spread 50mL of sand at the testing site. Measure the spreading lengths L1 and L2 using the method shown in Figure H2.3, and calculate L accurately to 1MM using equation (H2.3-3). L=（`L_1`+`L_2`）/2 （H2.3-3) (4) According to the above method, parallel measurements should be taken no less than 3 times at the same location, with all 3 measuring points located on the track belt and a distance of 3-5 meters between them. The measurement position at this location is represented by the position of the middle measurement point. (1) Preparation for sand measurement: Take clean fine sand, air dry, sieve, and place 0.15-0.3mm of sand in a suitable container for later use. Sand that has already been used on the road surface should be sieved again and dried when recycled and reused. (2) According to T 0962-95, the position of the test point on the cross-section is determined by randomly sampling the test section. The measuring point should be selected on the wheel track of the driving lane, and the distance from the edge of the road surface should not be less than 1M. Technical parameters: 1. The capacity of the sand funnel is about 70 milliliters. The lower opening width of the sand funnel is 2.7 millimeters. 2. Size of sanding belt: 50mm wide and 4mm thick. 3. Sand funnel moving speed: about 15 millimeters per second. 4. The movement range of the sand funnel is about 290 millimeters. 5. Dimensions: 470 × 160 × 140 millimeters 6. DC motor power supply: 12V, 3.3A.
Introduction: Electric sanding machine is used to detect and evaluate the macroscopic roughness and anti-skid ability of road surfaces Electric sanding machine is a testing instrument, please read the manual carefully before use. And it should be operated by experimental personnel to avoid injury caused by improper operation. For more information, please contact our customer service personnel. The electric sanding machine is provided by Shanghai Rongjida Instrument Technology Co., Ltd. The equipment has a one-year warranty period. If there are any quality problems with the product within one year, the supplier is responsible for free maintenance. If due to improper operation or human damage, our company should also provide repair and replacement services, and the resulting costs will be charged at our discretion.
