The revenue size of the global asphalt mixing plant market is likely to be US$ 1.99 billion by the year 2024. The asphalt mixing plant market has gone through explicit study and is likely to grow with a CAGR of 3.1 percent, reaching up to US$ 2.69 billion by the end of 2034. The asphalt mixing plant market has developed a lot with rising infrastructure development and demand for road construction. That growth is highly influenced by increasing urbanization, extending the road networks, and the need for maintenance and upgrade of existing roads—especially in the emerging markets such as China and India.
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Raw Materials of Asphalt
Essentially, asphalt is just a composite material comprising aggregates—such as crushed stone, gravel, and sand—with a binding medium, usually a by-product in the purification of crude oil called bitumen. Needless to say, the exact composition may vary depending on intended characteristics of the final product. In addition to the primary components, additives are introduced into the mixture to enhance certain properties such as durability or resistance to temperature, or workability. These can include everything from polymer modifiers and anti-stripping agents to fillers.
Types of Asphalt Plants
There are two major asphalt mixing plants: batch mix plants and drum mix plants.
Batch Mix Plants: These plants produce asphalt in batches, which allows control over the mix and addition of various additives. They are mostly versatile and can produce large categories of asphalt mixtures. On the other hand, they could be less efficient in continuous production.
Drum Mix Plants: In these plants, mixing of asphalt and aggregates is done continuously in a drum. They are usually preferred for large-scale works because they are efficient and produce asphalt continuously. Normally, drum mix plants have a lower cost of operation and maintenance compared to batch mix plants.
Key Players
Astec Industries Inc.
Gencor Industries, Inc.
NIKKO Co., Ltd.
FAYAT Group
Aimix Group
Ammann Group
Asphalt Drum Mixers, Inc.
Benninghoven GmbH & Co. KG
NFLG Inc.
Sany Group
Gongyi Santai Machinery Co. Ltd.
Mixing Process of Asphalt
The process of asphalt mixing can be divided into several major steps:
Aggregate Heating and Drying: The aggregates are heated and dried of their moisture. This is done in a rotary drum or dryer that also serves to heat the materials to the proper temperature.
Mixing with Bitumen: The aggregates are mixed with bitumen once they have been heated and dried properly. In a batch mix plant, this takes place in a pug mill mixer, while in the drum mix plants, it is done inside the drum itself.
Additives: Depending upon the properties required to be developed in the asphalt, different additives may be added in the mixing process. These can range from polymer modifiers for elasticity and anti-stripping agents for adhesion to fillers that can modify the texture.
Storage and Loading: The asphalt mixture is then stored in insulated silos to retain the temperature while awaiting loading and transportation to a jobsite.
A whole host of factors drive the market demand for asphalt mixing plants, ranging from government initiatives on infrastructure to road-construction technologies and environmental considerations. For example, warm mix asphalt—one of the fastest-growing trends—is produced at lowered temperatures, which helps curb energy use and related GHG emissions.
Steady growth is foreseen for the future of asphalt mixing plants. Steadily growing demand for developing and maintaining road infrastructure will keep the ball rolling. The advancement in technology and the rising awareness about the environment are about to change the course of the industry with more efficient and eco-friendly solutions.
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