What are the advantages and disadvantages of asphalt pavement? 5. What are the advantages and disadv

Asphalt pavement. The advantages are: smooth surface, no joints, comfortable driving, low vibration, low noise, wear-resistant, dust-free and easy to clean, short construction period, simple and renewable maintenance and repair, suitable for phased construction, etc

The disadvantages are: poor temperature stability of asphalt materials, easy to brittle in winter, easy to soften in summer; The compacted mixture has large porosity, poor water resistance, and is prone to water damage; Asphalt is a polymer material, with poor aging resistance and durability that is not easy to guarantee; The flatness is poorly retained, not only the flatness deteriorates due to settlement, but also the material is easy to form ruts when it softens. etc

50 degrees Celsius weather You walk up and you'll know what a hot swamp is.

Asphalt pavement is divided into two categories: embedded and compacted according to its strength composition principle. The interlocking asphalt pavement is paved with asphalt surface treatment, asphalt through-person type and asphalt gravel paving, which belongs to the sub-high-grade pavement. Compact asphalt pavement is paved with all kinds of asphalt concrete, asphalt mastic gravel, etc., which has large compactness and small pores, and is the asphalt pavement with the highest strength and stability, which is a high-grade pavement.

Asphalt pavement is a pavement structure in which asphalt mixture of a certain thickness is paved as a surface layer on a flexible base and a semi-rigid base. Compared with gravel pavement, this kind of pavement has greatly improved its strength and stability. Compared with cement concrete pavement, asphalt pavement has a smooth surface without joints, small driving vibration, low noise, fast open traffic, simple maintenance, suitable for pavement phased construction, and is an important structural form of pavement in China.

The disadvantage of asphalt pavement is that it is more temperature sensitive. In summer, the intensity decreases, and if it is not well controlled, the road surface will be soft and oily, or the emulsified asphalt will be damaged by shear cracking. At low temperatures, the asphalt material becomes brittle, which can cause cracking of the road surface.

The advantages of asphalt pavement include smooth surface, no joints, comfortable driving, low vibration, low noise, wear-resistant, no dust, easy to clean, short construction period, simple and recyclable maintenance and repair, suitable for phased construction, etc. The disadvantage is that the temperature stability of asphalt material is poor, it is easy to be brittle in winter, easy to soften in summer, and if it is not well controlled, it will make the road surface soft and oily or shear and destroy the emulsified asphalt.

The advantage of stone pavement is that the surface is very smooth and smooth. It is not easy to collapse and has a long service life, especially suitable for use in southerly winds on cloudy and rainy days. Less dust.

However, the disadvantage is that the quality is too heavy, and the project consumes a lot of time. And the texture is hard, it is easy to be bruised and bruised, and the damage to the body is greater, and natural marble is generally used for high-end interior decoration, such as wall and ground kicking. Granite is generally used for outdoor ground, steps, etc., should not be used inside, for indoor must be tested for harmful substances, granite contains harmful radioactive substances, harmful to the human body.

Bluestone slabs are generally used to decorate pavement, etc.

High-temperature stability is the ability of asphalt pavement to resist flow deformation. Because the strength and stiffness of asphalt pavement decrease significantly with the increase of temperature, in order to better ensure that asphalt pavement will not produce diseases such as waves, shifts, ruts, congestion and other diseases under the repeated action of driving load in high temperature season, asphalt pavement should have good high temperature stability.

Advantages of asphalt roads:

1. Asphalt pavement.

It is stable at high temperatures.

High-temperature stability is the ability of asphalt pavement to resist flow deformation. Because the strength and stiffness of asphalt pavement decrease significantly with the increase of temperature, in order to better ensure that asphalt pavement will not produce such as waves, shifts and ruts under the repeated action of driving load in the high temperature season.

Asphalt pavement should have good high temperature stability.

2. Asphalt pavement has low temperature crack resistance.

Low-temperature crack resistance refers to the ability of asphalt pavement to resist low-temperature shrinkage cracks. As the asphalt pavement drops with temperature, the stiffness.

Increase, decrease in swelling capacity. Under the action of external loads, some of the stresses do not have time to relax, and the stresses gradually accumulate, and these accumulated stresses exceed the tensile strength of the material.

Cracking will occur from time to time, which will lead to the destruction of the pavement, so the asphalt pavement should have low stiffness and greater deformation resistance at low temperature to meet the low temperature crack resistance.

3. Asphalt pavement has water stability.

Water stability refers to the ability of asphalt pavement to resist the erosion of water and gradually produce asphalt membrane peeling, granulation, loosening, and potholes. This is due to the presence of moisture on the one hand to reduce the cohesion of the asphalt itself, but also to destroy the asphalt pavement between the cohesion between the asphalt and the mineral material, thereby accelerating the spalling phenomenon and causing water damage to the road.

Disadvantages of asphalt roads:

1. Asphalt is easy to age, and the dark color of the pavement is easy to absorb heat and produce a certain degree of dissolution.

1. Cement pavement.

Advantages: 1) High strength.

2) Good stability.

3) Good durability.

4) Low maintenance cost.

5) Good anti-slip performance.

6) It is conducive to night driving.

Disadvantages: 1) The demand for cement and water is large, and the construction of 20cm thick and 7m wide cement concrete pavement requires 400 500 tons of cement and about 250 tons of water per kilometer.

2) There are more seams.

3) Late opening of traffic.

4) Difficulty in maintenance and repair.

2. Asphalt pavement.

Advantages: smooth surface, no joints, comfortable driving, low vibration, low noise, wear-resistant, dust-free and easy to clean, short construction period, simple and renewable maintenance and repair, suitable for phased construction, etc.

Disadvantages: Asphalt material has poor temperature stability, is easy to be brittle in winter and easy to soften in summer; The compacted mixture has large porosity, poor water resistance, and is prone to water damage; Asphalt is a polymer material, with poor aging resistance and durability that is not easy to guarantee; The flatness is poorly retained, not only the flatness deteriorates due to settlement, but also the material is easy to form ruts when it softens.

Advantages: 1. Good anti-skid performance: asphalt pavement has good anti-skid resistance, which can play an anti-skid role and ensure the safety of vehicle driving.

2. Simple and fast construction: the asphalt pavement only needs to be cleaned up simply, and then sprinkled with asphalt mixture, and then compacted to complete the construction, with fast construction speed and low cost.

3. Good durability: Asphalt pavement can resist the infringement of the natural environment and has good durability due to its own characteristics.

Disadvantages: 1. Poor frost resistance: asphalt pavement will become soft at low temperature, which is easy to produce cracks and affect traffic safety.

2. Poor corrosion resistance: asphalt pavement is susceptible to the corrosion of pollutants and damages the service life of the pavement.

3. High maintenance costs: Asphalt pavement needs to be maintained and maintained regularly, and the maintenance cost is high. Chain Sparrow Balance.

There are drawbacks. 1. Easy to slip: the surface of the asphalt pavement is rough, the asphalt viscosity on the surface is low, and it is easy to slip and fall accidents;

2. Poor durability: the durability of the asphalt wheel road surface is poor, and it is easy to produce cracks and hollow drums in high temperature and corrosive environments;

3. Poor compressive resistance: the asphalt pavement has poor compressive resistance, and it is easy to be damaged by the pressure of heavy vehicles such as cars and trucks;

4. Vulnerable to external influences: asphalt pavement is easily affected by external factors, such as temperature, humidity, air pressure, solar radiation, etc.;

5. Vulnerable to pollution: Asphalt pavement is susceptible to pollution by automobile exhaust, sewage, dust, etc., and Wang Shen affects the appearance of the pavement.

The advantages are: smooth surface, no joints, comfortable driving, low vibration, low noise, wear-resistant, dust-free and easy to clean, short rough construction period, simple and recyclable maintenance, suitable for phased construction, etc.

The disadvantages are: poor temperature stability of asphalt materials, easy to brittle in winter, easy to soften in summer; If it is not well controlled, the road surface will be soft, oily or sheared, and the emulsion will be damaged by shear cracking. At low temperatures, the asphalt material becomes brittle, which may cause cracking of the pavement plate.

The compacted mixture has large porosity, poor water resistance, and is prone to water damage due to large mu. Asphalt is a polymer material, with poor aging resistance and durability that is not easy to guarantee; The flatness is poorly retained, not only the flatness deteriorates due to settlement, but also the material is easy to form ruts when it softens.

Shanghai Liling Municipal Engineering is a professional asphalt pavement construction, and related questions can be consulted and answered.