CN-224227589-U - Dust-free pavement structure suitable for desert area

Abstract

The utility model provides a dust-free pavement structure suitable for a desert area. The utility model provides a dust-free pavement structure suitable for a desert area, which comprises a wind-blown sand roadbed base layer, a geotextile isolation layer, a wind-blown sand composite natural gravel cement gelation dust-free pavement layer, a nano silane-based coating layer and wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layers which are arranged on the surfaces of two sides of an old roadbed in sequence. According to the utility model, the wind-blown sand composite natural gravel cement gelatinization dust-free pavement layer and the wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layer are arranged on the surface layer of the old road subgrade, a rigid protective shell is formed by cement solidification, the sand particle cohesiveness is enhanced by the old road subgrade reinforcing layer (namely the nano silane-based coating), the stress is dispersed by the geotextile isolating layer, the wind-blown sand subgrade base layer absorbs and deforms, and the multilayer synergistic wind erosion resistance and dust fall are realized.

Inventors

• HUANG YONG
• SI YI
• SUN CHUNWANG
• Yue Xiying
• YANG BO

Assignees

• 新疆新山子高科技有限公司
• 新疆生产建设兵团建设工程(集团)有限责任公司
• 新疆大学

Dates

Publication Date

20260512

Application Date

20250403

Claims (6)

1. 1. The dust-free pavement structure suitable for the desert area is characterized by comprising a wind-blown sand roadbed base layer, a geotextile isolation layer, a wind-blown sand composite natural gravel cement gelatinization dust-free pavement layer, a nano silane-based coating layer and wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layers which are arranged on the surfaces of two sides of an old roadbed in sequence.
2. 2. The dust-free pavement structure for desert areas according to claim 1, wherein the nano silane-based coating has a thickness of 3mm into the dust-free pavement structure.
3. 3. The dust-free pavement structure for desert areas according to claim 1, wherein the aeolian sand composite natural gravel cement gel dust-free pavement layer has a thickness of 23cm.
4. 4. The dust-free pavement structure suitable for desert areas according to claim 1, wherein the aeolian sand roadbed layer is 50-80 cm.
5. 5. The dust-free pavement structure for desert areas according to claim 1, wherein the aeolian sand composite natural gravel cement stabilized soil composite binding layer is 10cm.
6. 6. The dust-free pavement structure for desert areas according to claim 1, wherein the compaction degree of the material for forming the aeolian sand composite natural gravel cement-gelled dust-free pavement layer is 95% -100%.

Description

Dust-free pavement structure suitable for desert area Technical Field The utility model relates to a dust-free pavement structure suitable for a desert area. Background In desert areas, the conventional pavement structure often has the problems of 1) serious wind erosion, loose wind volume Sha Yi carried by wind force to cause roadbed emptying and pavement collapse, 2) dust pollution, sand particles forming dust under the actions of rolling and wind force of vehicles to influence the environment and traffic safety, and 3) poor stability, and the conventional gravel base layer and desert sand have poor binding property and are easy to crack and subside. In the prior art, the pavement structure adopting single gravel or cement stabilized soil and other materials is difficult to adapt to the desert environment. In addition, traditional geotechnical cloth isolation layer is easy to damage under long-term sand blast impact, leads to the structure inefficacy. Therefore, there is a need for a pavement structure that is adaptable to desert environments. Disclosure of utility model The utility model aims to provide a dust-free pavement structure suitable for a desert area. According to the utility model, the wind-blown sand composite natural gravel cement gelatinization dust-free pavement layer and the wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layer are arranged on the surface layer of the old road subgrade, a rigid protective shell is formed by cement solidification, the sand particle cohesiveness is enhanced by the old road subgrade reinforcing layer (namely the nano silane-based coating), the stress is dispersed by the geotextile isolating layer, the wind-blown sand subgrade base layer absorbs and deforms, and the multilayer synergistic wind erosion resistance and dust fall are realized. The utility model provides a dust-free pavement structure suitable for a desert area, which comprises a wind-blown sand roadbed base layer, a geotextile isolation layer, a wind-blown sand composite natural gravel cement gelation dust-free pavement layer, a nano silane-based coating layer and wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layers which are arranged on the surfaces of two sides of an old roadbed in sequence. In the dust-free pavement structure suitable for the desert area, the thickness of the nano silane-based coating can be 3mm, the nano silane-based coating invades the wind-blown sand composite natural gravel cement gel dust-free pavement layer, and the waterproofness and the sand particle cohesiveness are enhanced. In the dust-free pavement structure suitable for the desert area, the thickness of the wind-blown sand composite natural gravel cement gel dust-free pavement layer can be 23cm. In the dust-free pavement structure suitable for the desert area, the aeolian sand roadbed base layer can be 50-80 cm. In the dust-free pavement structure suitable for the desert area, the wind-blown sand composite natural gravel cement stabilized soil composite edge-covering layer can be 10cm. In the dust-free pavement structure suitable for the desert area, the compactness of the material for manufacturing the aeolian sand composite natural gravel cement gel dust-free pavement layer is 95% -100%, and the aeolian sand, the natural gravel and the cement are mixed in proportion and then compacted to form the high-compactness base layer. In the dust-free pavement structure suitable for the desert area, the cement aeolian sand composite binding layer is made of aeolian sand composite natural gravel containing 1.5% of cement by mass percent, and the surface wind erosion resistance is improved through cement solidification. In the dust-free pavement structure suitable for the desert area, the aeolian sand composite natural gravel cement gelatinization dust-free pavement layer is also made of aeolian sand composite natural gravel containing 4% cement by mass percent. The preparation method of the dust-free pavement structure suitable for the desert area comprises the following steps: (1) Cleaning an original old roadbed, and compacting a wind-deposited sand roadbed base layer; (2) Laying geotextile on the aeolian sand roadbed base layer to serve as a geotextile isolation layer, wherein the overlapping width of the edges of two adjacent geotextiles is more than or equal to 30cm; (3) Filling aeolian sand, natural gravel and cement mixture on the geotextile isolating layer in a layered manner, and compacting to form an aeolian sand composite natural gravel cement gelatinization dust-free pavement layer; (4) Spraying a nano silane-based coating on the wind-blown sand composite natural gravel cement gelatinization dust-free pavement layer; (5) And paving aeolian sand composite natural gravel cement stabilized soil composite edge-covering layers on the two side surfaces of the old road subgrade, and mechanically compacting and maintaining for 7 days. The