By Ben Hudgins
Crushed concrete has emerged as a versatile and sustainable solution in the construction industry, particularly in regions like Texas, Florida, and Southern California. As a recycled material derived from demolished concrete structures, it serves a multitude of applications ranging from highway construction to drainage management. This article offers construction and hauling professionals an in-depth examination of the various uses, benefits, and specifications of crushed concrete, enabling them to make informed decisions for their projects while contributing to environmentally responsible practices.
Crushed Concrete in Highway Construction
Crushed concrete is extensively utilized in highway construction, serving two primary functions. First, during the demolition of a highway, a substantial amount of rubble is generated, which would typically be destined for a landfill. Finding a purpose for this material is a vital aspect of the construction strategy. Second, once the concrete is processed, it is predominantly used as a road base, although there are additional applications to consider.
In highway projects, the process begins with preparing the dirt surface, which is then stabilized by incorporating materials such as lime or fly ash. This creates a robust foundation, but a workable surface is necessary before laying the pavement. Crushed concrete or recycled aggregate is commonly used to construct a ten- to twelve-inch roadbed on top of the stabilized surface. The various sizes of the aggregate facilitate adequate compaction, especially when moisture is introduced. Once the desired density and elevation are achieved, the final pavement is installed on top. This methodology confirms that crushed concrete is suitable not only for highway construction but also for surface streets and rural roads.
Temporary Materials for Heavy Equipment Access
It is essential to consider the use of temporary materials that facilitate the movement of heavy equipment. For example, a current project nearby involves the installation of a Pug Mill and cement plant, where such materials play a crucial role. One commonly used product is a bull rock, measuring approximately three inches by five inches, which is typically employed at construction entrances and around drainage ditches. This material is utilized throughout the project’s duration and is removed once the work is completed, making it an invaluable resource for ensuring efficient entryways during construction.
Comparing Crushed Concrete and Asphalt Applications
It is essential to recognize its relationship with crushed asphalt, as both materials serve various applications. Crushed concrete and asphalt can be effectively utilized as sub-bases for paving and other construction products. The size of the crushed material also plays a critical role in determining its specific applications. For instance, in parking lot construction, crushed asphalt is often preferred due to its superior dust control properties. However, crushed concrete remains a viable option, particularly in areas with lower traffic volumes, where it can also perform effectively.
Types and Applications of Crushed Concrete
When concrete is crushed, it yields a variety of products. The crushing process produces three main types: bull rock, which measures three by five inches; crushed flakes base; and screened rock, ranging from one and a half to one and three-quarters inches in size. The fine particles are removed from the screened rock, making it suitable for various drainage applications. This material is particularly advantageous in scenarios requiring space filling while allowing water to permeate, such as in French drains or similar systems where a pipe is placed at the bottom of a trench. Although termed screened rock, it is essentially recycled concrete that has undergone processing to eliminate smaller particles.
RipRap Applications in Stormwater Management
RipRap is a crucial component when recycling pavement for use in stormwater management. In our region, we manage numerous RipRap projects, particularly associated with levees and drainage channels. We offer a range of RipRap sizes, including screen rock, bull rock, and the RipRap itself, which are commonly used in various drainage applications.
Applications of Crushed Concrete
Crushed concrete serves various applications, primarily as a foundational material for parking lots and as a road base or sub-base beneath pavement. Additionally, products such as three-by-five aggregates, screened rock, and riprap are designed explicitly for drainage-related functions.
Why Screened Rock Is a Smart Choice for Paving and Drainage?
Screened rock—crushed concrete that’s been processed for consistency—is a go-to material in paving and drainage applications. Its durability and permeability make it ideal for foundational layers in parking lots, roadways, and large-scale infrastructure projects. In high-demand environments like airports and industrial sites, screened rock helps manage moisture by allowing water to flow beneath paved surfaces, reducing the risk of pooling and structural damage. As a sustainable and cost-effective solution, it’s not just practical—it’s smart engineering.
Conclusion
The applications of crushed concrete are vast and varied, making it an indispensable resource in modern construction. By utilizing this recycled material, professionals not only achieve cost savings but also promote sustainability within the industry. As you incorporate crushed concrete into your projects, consider the specific types and benefits outlined in this guide to optimize your construction practices while adhering to regional logistical and regulatory considerations. Embracing crushed concrete is a step towards a more sustainable future in construction.
Author Bio
Ben Hudgins serves as the Manufacturing Operations Manager for Arcosa Crushed Concrete in the South Texas region. With decades of experience in large-scale road and airport construction, he built his career from the ground up, mastering every stage of the process. Seeking a new challenge beyond the evolving technology and machinery of traditional construction, Ben joined Arcosa, initially managing the plant on the north side of Houston. His proven leadership and operational expertise earned him the opportunity to oversee the entire South Texas crushed concrete division. Ben values Arcosa’s culture of opportunity and growth, crediting it with allowing him to excel in a role where he drives both operational excellence and innovation.
