In surface civil engineering there are many variables to take into account, and often special considerations for particular environments.
Quality is critical, yet costs must be kept under control.
When building foundations for roads, bridges, railways, airports and residential areas, it is essential to know exactly what should be done and how it should be done. It is essential that you use the right civil engineering equipment for the job
One of the most critical aspects of surface civil engineering is safety, especially when working in highly populated areas, where the consequences of error can be severe. Furthermore, there are often stringent regulations to comply with.
Civil engineering techniques: Drilling and blasting
In order to produce material from quarried rock, the feed material is first blasted from the quarry wall, then fed into the primary crushing stage. When smooth and stable rock walls are required, presplitting techniques can be utilized for safety and landscaping.
This means shorter hole spacing together with very light charging. Preventing flyrock and air/ground vibrations in urban areas is best achieved through high drilling accuracy and moderately small drill holes.
Blasting in urban areas must be planned to ensure people's safety and prevent damage to buildings through ground vibrations, shot rock or air pressure waves. Channelling via slot drilling techniques can be used for better stability and to isolate buildings from ground vibrations. Selected drill hole sizes are typically fairly small in order to match the drill pattern areas to cut widths, for example, in road, trench and pipeline construction.
Civil engineering techniques: Crushing and screening
High-specification aggregate materials are an important component in common construction materials such as asphalt and concrete. The aggregate material is normally produced from virgin quarry rock, which must be sized, shaped and separated in order to meet a the high quality demanded by local construction governing bodies around the world. The process by which the material is produced must be performed in a highly controlled manner.
Feed material size is reduced to match the requirements of secondary stage crushing.
Secondary and tertiary crushing:
These stages both size and shape the feed material in order to generate good quality cubical product. Product elongation and flake are considerations when identifying the correct crushing stages and types.
The final stage of production. Material is separated into finished product fractions according to product grading specifications. Oversize material can be re-circulated back to the final crushing stage to improve final product shape.
Civil engineering expertise: How we deliver
Sandvik crushers and screens are designed to give you more of the output you civil engineering needs. Each system can be tailored for the size, shape and fraction grading you want, ensuring more of the most saleable products with maximum efficiency.
Our automated control systems ensure the crushing stages are continually monitored and controlled to ensure optimum crusher settings are maintained. This lets you continually produce material at the correct specification.
Sandvik screens are designed to ensure material is accurately screened and split into required fractions. By optimizing the time the material remains on the screen, we ensure minimum carryover of unwanted material fractions (both undersize and oversize). This gives the best separation results and ensures good material flow for high productivity.
We provide the highest standards in civil engineering service and expertise with every one of our products backed by unrivalled aftermarket support. If you have any questions about any of our civil engineering products or services, contact a member of our team today.
Contact us for advice on product selection or other technical support.