Maintenance and management of highway maintenance machinery and equipment
| wangkiky 2154 | ||
|
Professional technology of related person is low: at this stage, the professional quality for highway maintenance machinery and management are relatively low, which directly led to the following occurs: as many maintenance management stuff is started from the driver,they know little about the road maintenance machinery, they lack the necessary technology, even not know how to properly use the machinery, or the daily maintenance and management.
Grooving filling machine Slotted crack sealing machine is the major road maintenance machinery, mainly for the treatment of cracks and cracks appears after emerging medium and large repair for disease preventive maintenance. Treatment can be used for cracks and other diseases of highway, national and provincial roads, county roads, municipal roads, parking lots, toll stations and other irregular asphalt cement pavement. Crack is one of the main disease of asphalt pavement. If not repair cracks timely, rainwater will penetrate the grassroots easily, caused the reduce of grassroots softness strength . The road will soon be broken after repeated grind, which not only affect resident traffic safety, but also increased maintenance costs. The appear if slotted crack sealing machine is going to solve the above problems. 1.Structure and working principle of slotted crack sealing machine From the out appearance, the device is combined with three parts, can be use the separately. One part is slot router,one is crack sealing machine,the other part is the blast blower. Slot crack sealing machine is primarily for processing medium and large cracks appear in the road repair,preventable maintain to the payment disease. By slotted the crack machine,using thermal spray gun or dryer blows clear the dust in the cracks , sealing crack by sealant to repair cracks to ensure that the overall performance of the road to extend the service life of the road. Slotted and repair method is suitable for middle and small cracks, also a common treatment at demotic and abroad, the major equipment including slot machines and crack sealing machine, heat gun and dryer with assistance. The material used to fill joints is specially designed for crack repair sealant material (polymer modified asphalt). This sealant live longer, generally up to four years. 2. Mode of operation and precautions of slotting crack sealing machine. After cut by slot machine, and then blow dust from the inside of the slot after cutting debris blown. It need to be caution that , the width of slot should be less than 1cm, width from 1-3cm, the depth and width can not exceed the percent at 2:1. Construction Technology of Repairing Pavement Cracks by Slot Grouting 1. Preparatory work:Make sure the slotting machine and crack sealing machine are working well.Confirm the joints design according to the situation of pavement cracks. Start the crack sealing machine and put the sealant into the pot to be heated and mixed to 193℃ but not exceed 204℃.Trailed the crack sealing machine back of the truck, equips the sealant, separated verge, safety signs and slotting router and piggy blower or heating lance on the truck.Hang to predetermined construction sites, closed the half of road demi to be as a construction zone. 2. Slotting :Adjusted the slot depth according to the design of slotted size in advance, then start to slot. Adjust the slot size according to the type of crack width to meet the minimum requirements. 3. Crack cleaning Clear up the dust inside the cracks and both sides of the slag at least 10cm scope thoroughly,be clean, dry and suitable temperature for operation plane. 4. Sealing （Caution：If the temperature of fill joint is below 5 ℃ , sealing machine must be equipped with a heat gun for the slotted cracks , if not heat the pothole at this temperature will reduce the adhesion of the sealant; if the temperature is high than 5 ℃,it may not necessary to be heated, usually the effect will be better if heated. ) Pouring the sealant to the slot averagely after the sealant temperature reached , there is a blade head equipped on the sealing machine gun, which can blow away the excess material, so that the sides of the fracture line can be same width and the thickness of the seal tape. 5. Maintenance After pouring sealant, the traffic can be open after the sealant become cool enough and dust cleared up. The general cooling time is around 15 minutes, the exact traffic opening time can be flexible according to the temperature conditions. Related Sites: [url=http://roadroutercrack.com/blog-new/476.html]high performance power trowel machine[/url] |
||
