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3. Concrete pumping
Concrete pumping is a mechanical conveying technique that enables rapid delivery of concrete into the formwork. The principle involves pumping the concrete into a pipe. The concrete is first "agitated" in the pump's reception hopper as soon as it leaves the mixer truck, to preserve its homogeneity. Once a slurry has been prepared to lubricate the pipes and eliminate the risk of blockages, the concrete is pushed into the boom pipe.
Pumping is characterized by :
optimum productivity by reducing waiting times on site;
easier access to hard-to-reach sites;
better casting continuity.
The concrete must be specially designed so as not to lose its plasticity and homogeneity during the pumping...
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Concrete pumping
Concrete clamping with energy input
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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