1.碾压原则为：随铺随压，先静后振，先慢后快，先低处后高处。2.碾压分

1. rolling principles: with the shop with the press, after the first static vibration, the first slow after the fast, at first low after the high. <br>2. Rolling into initial pressure and final pressure re-pressed three stages. <br>3. The use of early pressure vibration roller YZ18 be rolling off vibration. It rolled several times to twice, rolling speed control 1.5 ~ 2Km / h. So that the mixture is stable, preliminary compaction, complex pressure reduction during pushing. <br>4. The main process is re-pressed cement stabilized gravel road compaction, the entire road is full-thickness dense, reaches a predetermined degree of compaction of the key. High-frequency, low-amplitude rolling, rolled several times is 3 to 4 times, speed does not exceed 3Km / h. Rolling process of testing personnel at any time using sand replacement method to detect the degree of compaction growth, rolling to qualified. <br>The final pressure roller wheel by light rolling, rolled several times according to the surface condition of the concrete is generally 6-8 times, rolling speed of 4 ~ 6Km / h. Occur when paving or eliminate cracking and fracturing pressure recovery wheel rolling tracks the substrate surface more compact. <br>6. The rolling process, the front and rear wheels track roller should overlap the third wheel width, to avoid leakage or pressure rolling seams not dense. After completion of each pass rolling, sand replacement method are used for detecting the degree of compaction, until when laminated to a suitable degree of compaction. 5% cement stabilized graded gravel Base Compactness ≥98%, 4% cement stabilized graded gravel bottom Base Compactness ≥97%. <br>7. The rolling process, such as a "spring", open drying method or process Replacement of new material, but should ensure a minimum thickness of not less than 10 cm, a thin layer of non-stick. <br>8. RCC Note: <br>① regulator must be in full-face, to prevent local leakage pressure; <br>② rolling process, the roller must move uniformly, non-sudden start or emergency brake, to avoid the passage of the mix, so as not to affect flatness; <br>③ roller bits must be stepped down, not in the same section; <br>; ④ prohibited roller rolling on a non-complete stop or turn around the base layer <br>prohibit rolling machinery running on a non-rolling ⑤ not completed road;

1. The crushing principle is: with the pressure, first quiet and then vibration, first slow and then fast, first low after high.<br>2. The crushing is divided into three stages: primary pressure, re-pressure and final pressure.<br>3. The initial pressure uses YZ18 vibration roller to shut down the vibration for crushing. The number of crushing passes is two times, and the crushing speed is controlled at 1.5 to 2Km/h. Stabilize the mixture, get the initial compaction, reduce the push and push in the process of repressing.<br>4. Repress is the main process of cement stabilization gravel pavement compaction, is the key to make the whole road surface fully thick and compact, to achieve the prescribed compaction degree. The use of high-frequency, low amplitude crushing, the number of crushing passes for 3 to 4 times, the speed does not exceed 3Km/h. In the process of crushing, the test personnel use sand irrigation method to detect the growth of compaction at any time, crushing to qualified.<br>5. Final pressure using light wheel roller crushing, the number of crushing passes according to the concrete surface conditions are generally 6 to 8 times, the crushing speed is 4 to 6Km/h. Eliminate cracking cracks and crushed wheel sashimi during paving or repressurization, making the grass surface more dense.<br>6. In the process of crushing, the front and rear wheels of the roller should overlap 1/3 wheel width, so as to avoid leakage or uneven crushing at the seam. After each crushing is completed, the sand-filling method is used for compaction testing until the crush is to a suitable compaction degree. 5% cement stabilization grade with gravel base compaction degree of 98%, 4% cement stabilization grade with gravel base base compaction degree of 97%.<br>7. In the process of crushing, such as the appearance of "spring", the use of open drying or filling the method of new material treatment, but should ensure that the minimum thickness is not less than 10 cm, is strictly prohibited to paste thin layer.<br>8. Grinding precautions:<br>(1) The regulation must be carried out within the whole section to prevent local leakage pressure;<br>(2) In the process of crushing, the roller must keep moving at a uniform speed, strictly prohibit sudden start or emergency braking, to avoid the mixing material to produce a movement, so as not to affect the flatness;<br>(3) The roller parking space must be ladder-like and must not be on the same section;<br>(4) It is strictly forbidden for the roller to stop or turn around at the grass-roots level that has not been crushed;<br>(5) Non-crushing machinery is prohibited from walking on the road surface that has not been crushed;

1. Rolling principle: laying and rolling, first static and then vibration, first slow and then fast, first low and then high.<br>2. Rolling is divided into three stages: initial rolling, re rolling and final rolling.<br>3. The YZ18 vibration roller is used for initial compaction to turn off the vibration for rolling. The rolling times are two times, and the rolling speed is controlled at 1.5-2km/h. Make the mixture stable, get the initial compaction, reduce the push in the process of re compaction.<br>4. Re compaction is the main process of cement stabilized macadam pavement compaction, and it is the key to make the whole pavement full thickness dense and reach the specified compaction degree. High frequency and low amplitude rolling shall be adopted, and the rolling times shall be 3-4, and the speed shall not exceed 3km / h. During the rolling process, the test personnel shall use sand filling method to detect the increase of compactness at any time and roll until it is qualified.<br>5. The final rolling is carried out by smooth wheel roller. The rolling times are generally 6-8 times according to the concrete surface conditions, and the rolling speed is 4-6km / h. Eliminate the cracks and roller tracks during paving or re compaction, and make the base surface more compact.<br>6. In the rolling process, the front and rear wheel tracks of the roller shall be overlapped by 1 / 3 of the wheel width to avoid missed rolling or uncompacted rolling at the joints. After each rolling, the sand filling method shall be used to detect the degree of compaction until the proper degree of compaction is reached. 5% Cement Stabilized Graded Crushed Stone Base compactness ≥ 98%, 4% Cement Stabilized Graded Crushed Stone Subbase compactness ≥ 97%.<br>7. If "spring" appears during rolling, turn it over for drying or replace with new material, but the minimum thickness shall not be less than 10cm, and it is strictly prohibited to stick thin layer.<br>8. Rolling precautions:<br>① The pressure stabilization must be carried out in the whole section to prevent local pressure leakage;<br>② In the rolling process, the roller must keep moving at a constant speed, and it is strictly prohibited to start suddenly or brake in an emergency to avoid the displacement of the mixture, so as not to affect the flatness;<br>③ The roller stand must be stepped and not on the same section;<br>④ It is strictly prohibited for the roller to stop or turn around on the uncompleted base;<br>⑤ Non rolling machines are not allowed to walk on the uncompleted pavement;