The foundation of a building places high demands on the stability of the subsoil. Particularly in regions with difficult ground conditions, special methods are required to ensure a secure and durable foundation. One proven method is the use of cast-in-place pile. The in-situ concrete bored pile (deep-foundation supports) is driven directly into the ground on site and filled with concrete. Thanks to their flexible adaptation to the geological conditions, they offer a reliable solution for numerous construction projects.
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What is a cast-in-place pile?
A cast-in-place pile is a deep foundation solution that is driven into the ground on site and filled with concrete. This method is used to provide a stable foundation for buildings on poorly load-bearing ground. In contrast to prefabricated piles, which are driven into the ground, the in-situ concrete bored pile is individually adapted to the ground conditions.
The great advantage of this type of pile is its flexibility. Depending on the geotechnical conditions and static requirements, the pile diameter, length and reinforcement can be adapted precisely to the respective structural requirements.
Cast-in-place pile: Areas of application
Cast-in-place pile are used in numerous areas of construction. They are used in particular when conventional shallow foundations are not sufficient to ensure the load-bearing capacity of a structure. Typical areas of application include
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Structural engineering: Structural reinforcement of buildings with a high dead weight or in areas with poor soil bearing capacity.
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Bridge construction: Foundation of bridge piers in river beds or other difficult ground conditions.
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Infrastructure construction: stabilization of retaining walls, tunnels or noise barriers.
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Special civil engineering: Used in construction projects with high settlement requirements or difficult geotechnical conditions.
Cast-in-place pile: influence of the substrate on the pile length and diameter
The length and diameter of the cast-in-place pile depends largely on the geological conditions. Geologists analyze the subsoil and determine the necessary dimensions to ensure safe load transfer.
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Load-bearing substrate: Shorter piles with a smaller diameter may be sufficient in firm ground conditions.
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Soft or settlement-prone soils: In such cases, piles must be driven deeper into load-bearing layers to ensure the necessary stability.
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High structural loads: Depending on the type of structure and its load, larger diameters and longer piles must be provided.
The exact dimensions are determined by geotechnical investigations and static calculations, which ensure that the pile reliably meets the requirements placed on it.
How is a cast-in-place pile processed?
An often underestimated but essential aspect of pile foundations is the processing of the pile heads. Once the bored piles have been produced, they must be prepared in such a way that an optimum connection with the foundation is guaranteed. The bored pile serves as a load-bearing connection between the structure and the deeper, load-bearing subsoil. Improper or inadequate processing can result in the loads not being transferred correctly, which can cause structural problems or even damage to the building in the long term. It is therefore essential that the pile head is machined with the utmost precision, taking into account the structural and design requirements.
Brextor®: the experts for cast-in-place pile processing
With the patented Brextor® milling process the dismantling force is under control at all times. The core and surface tension is broken in a single work step. But that’s not all! Brextor® contributes to efficient and sustainable pile head processing:
🏗 Increased construction quality
Perfectly finished piles without cracks in the pile body or spalling on the pile skin, no bent or torn reinforcements and a height accuracy of +/- 1 cm.
💵 Reduced construction costs
The demolition material consists of 80% gravel 0-30mm and can therefore be reused directly on the construction site. In addition, Brextor® requires less working space than conventional mining methods. This means that not only expenses for transportation and disposal incl. fees are saved, but the purchase and supply of replacement material is also eliminated. Furthermore, the preparatory work eliminates the need for a separating diamand cut at the final extraction level and the cleaning effort is massively lower than with conventional extraction methods.
⏱ Shortened processing time
A pile, e.g. with a diameter of 1 m and a removal height of of 1m can be processed within 40 minutes. Thus a Daily output of up to 16 piles possible. With Brextor® you also get a reliable performance and therefore increased planning security.
♻️Environmentally friendly
With Brextor®, the demolition material (80% gravel 0-30mm) can be reused directly on the construction site. Brextor® also requires less working space. This saves excavation and replacement material. By reusing the demolition material directly on the construction site and saving on excavation and replacement material, transportation can be saved. In addition, landfills are less polluted.
👷Increased health & safety at work
No heavy physical labor is required for pile processing, which massively reduces the risk of health hazards such as HAVS syndrome. Brextor® also avoids working in danger zones.
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