What tools do you need for concrete pavement construction 20

It depends on what grade of road you are constructing, and high-grade roads generally use synovial membrane.

pavers; Low-grade three-roller shafts are generally used. This is the main machine of large size, and there are many small tools, such as excavators (cloth) or concrete placers; concrete transport trucks; Generator (200kw, or meet the needs of construction); sprinkler trucks; cutting and sewing machine; curing agent spreader; rainproof construction sheds; working bridges, etc.

If there is any details, please add!

Concrete pavement is generally composed of four parts: subgrade, base, cushion and surface layer, and the main material of the surface layer is concrete, which generally requires wear-resistant, smooth, anti-slip, strong and so on. Common pavement construction machinery includes: subgrade excavation machinery, subgrade filling machinery, pavement construction machinery and safety facilities construction machinery.

The specific ones include bulldozers, excavators, Sanren machinery laser pavers, loaders, concrete mixing stations, concrete trucks, dump trucks, etc.

Concrete Placing Machine Concrete Paving and Leveling Machine Cement Curb Forming Machine Percussion Drilling Machine Engraving Machine Cutting and Sewing Machine Vibrating Machine Crusher Vibrating Rod (Hammer), Leveling Drum, Live Vibration Leveling Machine, Slurry Collecting and Trowel 、、、

Vibrator and leveling drum. Live vibration leveler. Slurry harvesting trowel, (telescopic expansion) cutting and sewing machine.

Vibrating rods, leveling rollers, live vibration leveling machines, slurry collecting and trowels, telescopic expansion) cutting and sewing machines That's all!!

Summary. Dear, glad to answer for you.

1. There is only one general construction method for cement pavement, which is surface layer construction.

2. The concrete pavement of the surface layer construction is mainly the two processes of supporting the formwork and concrete vibration; The formwork is all made of channel steel, and the vibrating concrete is used for vibrating beam, and the channel steel is both the template and the guide rail of the vibrating beam moving, and the construction speed is relatively fast, and the flatness quality is better; If it is simple, the formwork is a steel formwork or a wooden formwork, and a plate vibrator or vibrating rod is used to vibrate the concrete. The concrete is nothing if it is made of commercial concrete, and it is more cumbersome if it is mixed on site.

3. During the construction, the 6-meter-wide pavement should be divided into two constructions, the 3-meter-wide pavement should be constructed first, the formwork should be erected first, and then the concrete should be poured, and the row should be walked forward. In this way, the concrete between the two pavements is not poured at the same time, and the solidification time is different, and a construction joint is naturally formed in the length direction.

4. After the concrete is poured, it is necessary to maintain it in time and cut the joints in time. The time for cutting joints should be mastered for concrete strength, and it should not be too early or too late. Masonry joints include longitudinal and transverse, and transverse joints can be cut at certain intervals in the transverse direction.

There are several construction methods for cement concrete pavement.

Dear, I am glad to answer for you 1, there is only one general construction method of cement pavement, that is, surface layer construction. 2. The concrete pavement of the surface layer construction is mainly the two processes of supporting the formwork and concrete vibration; The formwork is all made of channel steel, and the vibrating concrete is used for vibrating beam, and the channel steel is both the template and the guide rail of the vibrating beam moving, and the construction speed is relatively fast, and the flatness quality is better; If it is simple, the formwork is a steel formwork or a wooden formwork, and a plate vibrator or vibrating rod is used to vibrate the concrete. There is nothing to use commercial concrete, and it is more cumbersome if it is mixed on site.

3. During the construction, the 6-meter-wide pavement should be divided into two constructions, the 3-meter-wide pavement should be constructed first, and the concrete should be poured after the formwork is erected first, and the concrete should be poured in rows. In this way, the concrete between the two pavements is not poured at the same time, and the solidification time is different, and a construction joint is naturally formed in the length direction. 4. After the concrete is poured, it is necessary to maintain it in time and cut the joints in time.

The time for cutting joints should be mastered for concrete strength, and it should not be too early or too late. Masonry joints include longitudinal and transverse, and transverse joints can be cut at certain intervals.

The conditions and purpose of asphalt pavement paving experimental road are briefly described.

100 meters at the start of construction, or key lots. Brother Mu Gao is to test the reasonable combination of compaction machinery, leakage fiber paving machinery and other machinery, the proficiency of manual cooperation, whether the materials used meet the design requirements, and whether the selected Songpu coefficient and other data are reasonable.

1. Before the construction of concrete pavement, the formwork needs to be installed first, and the steel formwork is taken under normal circumstances, and for some curve designs, the wood formwork is used. Its height should be consistent with the thickness of the concrete panel, and the error should not be too large, and the normal range is between 2 mm.

2. Next, install the force transmission rod, and at the same time, you need to sprinkle water before you can proceed to the next step. The amount of sprinkling needs to be determined according to the temperature, humidity and wind speed, but at least to ensure that the pavement base is moist, and all of it must be sprinkled to achieve uniformity.

3. Then the concrete is unloaded on the site, paved by the staff on site, and also needs to go through the process of leveling and polishing, and the plug-in vibrator can be selected when vibrating, and the thickness of the laying is generally between 20 and 26 cm.

4. The next step is to take the method of maintenance to ensure that the surface can not be wet, and at the same time, according to the change of temperature, the maintenance time can not be less than 7 days, and finally wait until it is solidified before it can be opened to traffic.

What are the three general methods of concrete curing?

1. Natural conservation.

In order to smoothly disassemble the membrane, we can loosen the formwork a little bit after the concrete is poured for one to two days, and then continue to maintain the humidity until the day when the membrane can be really removed.

We can use water storage, watering or sprinkling, which can keep the concrete surface in a humid state, and we can also use linen straw bags and other materials to wrap the surface of the concrete, which can also maintain the humidity and keep the water from draining.

2. Health liquid method.

It can achieve the purpose of curing concrete through a special solution, spraying on the concrete with a spray gun, after the solution bends and diverges, it can form a layer of plastic film on the surface of the concrete, which can effectively separate the concrete from the air, thereby reducing the evaporation of water and ensuring the moisturizing effect of Kaichen.

Some concrete maintenance effect is not very good, and it will age and fall off. In the summer, we should apply some sunscreen treatment to the film to avoid cracks, and spray evenly to ensure that there is no leakage.

3. Curing membrane method.

The curing film that protects the moisture retention of concrete is a high-tech material, which can absorb a lot of water, and after the water absorbs and expands, it can turn the liquid water into solid water, and then transport the water to the concrete through the capillaries to achieve the purpose of curing the ground.

Concrete pavement refers to the pavement with cement concrete slab as the surface layer. It refers to the pavement structure composed of cement concrete slab as the surface layer, base layer and cushion layer, also known as rigid pavement.

Concrete pavement is generally composed of four parts: subgrade, base, cushion and surface layer, and the main material of the surface layer is concrete, which generally requires wear-resistant, smooth, anti-skid, strong and so on. The main machinery is roadbed excavation machinery;Subgrade Filling Machinery;Pavement construction machinery;Safety facilities construction machinery. Specifically, there are excavators, excavators, Sanren Machinery laser leveling machines, loaders, concrete mixing stations, concrete trucks, dump trucks, etc.

1. Equipment: There are four main types of machinery, 1. Subgrade excavation machinery;

2. Subgrade filling machinery;

3. Pavement construction machinery;

4. Safety facilities construction machinery;

Specifically: bulldozers, excavators, road rollers, loaders, concrete mixing stations, concrete trucks, dump trucks, vibratory rammers, etc.

2. Materials: water, electricity, sand, mud, formwork, steel bars and supporting drainage system facilities.

a.Purchase the materials that have passed the investigation and test for preparation, the ore should be classified and stacked, the ore powder must be limestone ground fine, not damp, if necessary, do a good job of hardening the ore stacking site and drainage facilities around the site and set up a mineral powder warehouse or storage tank.

b.Do a good job in the mix ratio design and submit it to the supervision engineer for approval, and conduct compliance inspection on various raw materials.

c.Restore the middle line (during the construction of the bottom layer) on the base layer that has passed the acceptance, and nail the side pile every 5-10m on the outside of the edge line for horizontal measurement, pull the baseline line, and draw the edge line.

d.The lower bearing layer is cleaned, and the bottom layer is sprinkled with oil on the base layer two days before construction. Spray the viscous layer oil on the midsole top.

e.28 days before the start of the test section, the test instruments and equipment should be installed, and the test personnel should be submitted to the supervision engineer for review. 14 days before the start of each floor, all mechanical equipment is prepared at the site approved by the supervising engineer for the paving of the test section to determine the loosening coefficient, construction technology, mechanical equipment, personnel organization, compaction times, and check the degree of compaction, asphalt content, mineral gradation, asphalt mixture Marshall technical indicators, etc.

It is necessary to do the compaction test report of the foundation replacement fill, as well as the 28D compressive strength test report after the concrete is poured.

Templates, blenders, vibrators, trowels, etc.