Overview
ABSTRACT
Concreting operations take place as soon as formwork operations are completed. They need to be well prepared, because the consistency of concrete changes during this operation. In general, a concreting plan is established in which all the requirements are specified, including reception controls. In general, the technology involved is pouring with a bucket and vibration with a needle vibrator. Advancement in materials and technology has hastened the development of new techniques such as concrete pumping.
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Read the articleAUTHOR
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Wilfried PILLARD: Function Technical Manager EGF.BTP
INTRODUCTION
This third section deals with current concreting problems. Aspects of plasticity control are discussed in practical terms on the worksite. How can we distinguish a random problem from a functional maladjustment of the concrete? And, in the case of one-off incidents, how to determine the real causes.
The pouring of concrete into the formwork is then dealt with, including the different situations likely to be encountered in the case of concrete pumping, then tightening by vibration for common concretes. The special case of self-compacting concrete is also discussed.
Finally, the concreting of deep foundations is dealt with separately, given the specific features of the fluid, non-vibrating concretes used.
Readers should also refer to the other files in this series:
The Ultimate Scientific and Technical Reference
KEYWORDS
building | hydraulic concrete | concreting operations | building materials
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Hydraulic concrete – Placing – Concreting and clamping
Controlling fresh concrete on site
Bibliography
Standards and norms
- Admixtures for concrete, mortar and grout – Part 1: Common requirements. - NF EN 934-1 -
- Admixtures for concrete, mortar and grout – Part 2. - NF EN 934-2 -
- Admixtures for concrete, mortar and grout – Part 5: admixtures for sprayed concrete: definitions, requirements and conformity, marking and labelling. - NF EN 934-5 -
- Building work – Execution of concrete structures. - NF DTU 21 -
- Exécution...
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EGF.BTP – Syndicat des entreprises générales de France
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