Equipment for Producing Sand and Gravel Aggregates for Highway Pavement Construction
The supply-demand imbalance for sand used in highway construction concrete is particularly acute. During peak demand periods, sand shortages have even occurred, severely hindering project progress. Furthermore, with the rapid advancement of highway concrete technology, modern highway bridge concrete imposes increasingly stringent technical requirements on sand. Particularly for high-strength and high-performance concrete, the demand for aggregates is extremely demanding. The quantity of natural sand meeting these requirements is dwindling, or even non-existent. Consequently, manufactured sand and gravel have assumed a crucial role in construction projects, becoming a vital source of construction aggregates. Therefore, vigorously promoting the application of manufactured sand and gravel aggregates in construction projects is imperative. So, what equipment is used to produce sand and gravel aggregates for highway pavement construction?
As a specialized manufacturer of sand-making machinery, OCP introduces equipment for producing aggregates that meet the requirements for high-grade highway pavement construction.
Highway (high-grade road) construction imposes stringent requirements on the particle shape and gradation of concrete sand and gravel aggregates, particularly concerning the content of needle and flake particles in basalt (diorite) crushed stone. Traditional processing methods relying solely on cone crushers or impact crushers can no longer meet these demands. Our company has introduced a new crushing and screening process utilizing advanced sand-making machines that effectively satisfy all technical requirements. The new sand-making machine is essential equipment for producing high-performance concrete aggregates and premium stone materials, fully meeting the technical requirements for manufacturing high-performance concrete aggregates used in expressway construction.
Artificial Sand and Aggregate Process: Materials (limestone, marble, granite, etc.) enter the primary crushing equipment via a feeder. Crushed aggregates proceed to the secondary crushing and shaping stage in the fine crusher. They are then conveyed by belt to the screening unit for grading. Aggregates meeting the required specifications are retained, while excess material and aggregates failing to meet gradation requirements are directed to the sand-making equipment. The crushed aggregate from the sand-making machine is conveyed via belt to the screening workshop for reclassification. This forms a closed-loop cycle involving the medium crushing unit, sand-making unit, and screening unit, processing raw materials into the required finished sand and aggregate products. Artificial sand and aggregate production can employ either dry or wet methods. Considering environmental protection and water conservation, air classifiers can be used for sand grading, facilitating environmental compliance and real-time adjustment and control of stone powder content.
The new sand-making machine, applied throughout the artificial sand aggregate process, features more mature technology. Its redesigned internal structure ensures safer operation and more stable performance, elevating production efficiency and environmental standards to new levels. To continuously meet accelerating economic growth demands, large-scale equipment is increasingly adopted. Under conditions of automation and environmental compliance, more efficient and capable crushing machinery has become the primary preference for customers. The new sand-making machine in OCP's aggregate production equipment offers flexible feed system options: full-center or cascade feeding. Its crushing principles can be selected between “stone-on-stone” and “stone-on-iron” modes, allowing convenient adjustments based on actual material conditions and significantly boosting production capacity.
OCP specializes in developing and manufacturing complete sets of equipment for crushing, screening, grinding, washing, feeding, conveying, environmental protection, dust removal, as well as steel, metallurgy, and steel slag processing and recycling. Our products are widely applied in the crushing and processing of metals and non-metallic minerals, energy raw materials, and metallurgical waste residues within the steel and metallurgical sectors. Click the website customer service for immediate free consultation, available 24/7 online.
