Iron oxide pigment for road asphalt

Time is unlimited and operation is easy. When mixture is prepared, 2-3% pigment is put into batching plant and mixed with stone to form colored asphalt mixture, then loading and paving can be done. 3 cm of paving thickness is suggested on the premise of saving cost. The product has also advantages of high strength for colored pavement, high and low temperature performance, excellent durability. In addition, color is bright and colorfast. Pigment package is 25kg/bag.

Colored Asphalt Production And Construction Procedure:

① Asphalt entrance or joint

② Adding aggregates

③ Adding pigment

④ Finished product

⑤ Feeding

⑥ Paving

⑦ Compacting

⑧ Finishing

Construction Guide  

Construction technology of colored asphalt mixture is similar to that of common asphalt mixture, and attention should be paid to the following:

1. Clean the original feel pipeline of black asphalt and dock the equipment of colored asphalt.

2. Before mixing, mixing tank in the mixing station is washed with hot aggregate several times cleanly.

3. Property of raw material should be stable so that mix proportion of production target can be close to that of design target greatly.

4. Temperature of aggregate is controlled at 170℃-190℃, and heating temperature of asphalt is at 160℃-175℃.

5. Pigment is packed in bag. Precalculate the amount of pigment for a jar of mixture before using and open package in advance. After aggregate is put into mixing tank, pigment is added directly. The suggested mixing time is 60S, and actual mixing time depends on the requirements of appearance for asphalt. Asphalt mixture should have performances of even coverage, no gray particle, uniform color, no agglomerate and no isolation phenomena of particle. The quality can meet construction requirement.

6. Vehicles and coverings for transporting mixture should be cleaned in advance.