The equipment requirement of Asphalt Chip Sealer

 1. Equipment Selection

 

NO.

Item Name

Model

Quantity

1

Asphalt Chip Sealer

DAL10-T38

1

2

Wheel Loader

5T

1

3

Sprinkler

8T

2

4

Pneumatic Tyre Roller

16T

2

5

Asphalt Transportation Truck

DAGB-30

3

6

Road Cleaning Vehicle

 

2

 

 

 

 

 

 

2. Material Technical Requirement    

The material used in the process of synchronizing the rubble is mainly composed of bonded materials and gravel, and its technical requirements are as follows:

2.1 Chip

 

Material Requirement:Gravel requirement after repeated break (or hammer broken) of gravel, the needle flake restricted to below 15%, geometry size is better, do not contain impurities and stone powder, crush value 14% or less, and strictly after washing dry, and the acid and alkaline of stone do not have special requirements, its technology is asking to see the table below.

 

 

No.

Indicators

Technology Requirement

Test Method

1

Crush value%

≤14

T031694

2

Los Angeles abrasion loss%

≤30

T031794

3

Fracture surfacegeometrical shape

More four broken planesApproximate cube

4

sturdiness%

≤12[22]

 

5

Polished valueBPN

≤42[22]

 

6

The adhesion of the asphalt%

≥20

Mark 1

7

The needle flake content%

≤15

T031294

8

Bind Content%

≤1

T031094

9

Content of soft rock%

≤5

T032094

 

Remark:1:The pilot project adopts the experimental method in France;2:The stone is used to break down (or hammer) the way of processing, without special requirement of acid and alkali, it must be washed and dried by strict washing;

Commonly used structure:It is commonly used in the classification of broken stage. According to the condition of the road and the requirement of the slippery performance of pavement, it can be divided into four sizes: 2-4mm, 4-6mm, 6-10mm, 10-14mm.Can choose different according to different pavement, gravel gradation rural highway pavement construction usually choose 4 -- 6 mm gradation, construction of the highway pavement maintenance with 6-10 mm or 10-14 mm, according to the road paving layer 2 or more technical requirements. Common method is to use 4-6mm or 6-10mm, 10-14mm gravel for the first layer, then use 2-4mm stone to do the second layer。

2.2 Binders

Generally speaking, the synchronized crushed stone seal layer can use any kind of asphalt binder, such as pure asphalt and polymer modified asphalt, emulsified asphalt and polymer modified emulsified asphalt, diluted asphalt, etc. But the main using SBS and SBR modified emulsified asphalt and rubber modified asphalt or, hot asphalt is mainly used for large-scale seal, emulsified asphalt used to repair potholes, diseases and so on. The adhesion of the stone material must be strictly tested before using, and the emulsified asphalt should be used to ensure that the emulsion is broken when the emulsion is combined with the stone material.

In conclusion, the choice of raw materials should consider various factors such as surface type of highway, traffic flow, climate and supply capacity.

 

DOAN PAVEMENT MAONTENANCE EQUIPMENTS LIST