Abrégé

Methods and an associated system for processing unhardened concrete are disclosed. With these methods, the porosity of the unhardened concrete is significantly increased to decrease the strength so much that it can be easily broken up for sale or reuse. In at least one embodiment, the method includes adding a large volume of foam to the returned unhardened concrete and then mixing the foam with the returned concrete in the ready-mix concrete truck or other concrete mixing devices at any location including the jobsite, enroute to the concrete plant, or at the concrete plant. Through the mixing of foam with the returned concrete, the hydrated cement and aggregate particles are separated by large volumes of air voids, which significantly increase the porosity and dramatically reduce the strength of the returned concrete. The treated concrete is discharged and allowed to solidify in this weakened state, after which it is easily broken into loose particulate material that can be sold or reused.

Classes IPC  ?

• C04B 38/10 - Mortiers, béton, pierre artificielle ou articles de céramiques poreuxLeur préparation en utilisant des agents moussants
• C04B 38/02 - Mortiers, béton, pierre artificielle ou articles de céramiques poreuxLeur préparation par addition d'agents chimiques gonflants
• C04B 38/08 - Mortiers, béton, pierre artificielle ou articles de céramiques poreuxLeur préparation par addition de substances poreuses
• C04B 103/42 - Formateurs de pores
• C04B 103/50 - Agents anti-mousseAgents d'expulsion d'air
• C04B 18/02 - Matières agglomérées
• C04B 18/04 - DéchetsRésidus
• B28C 5/46 - Dispositifs pour appliquer une pression supérieure ou inférieure à la pression atmosphérique pendant le mélangeDispositifs pour le refroidissement ou le réchauffage pendant le mélange

Abrégé

Methods and an associated system for processing unhardened concrete are disclosed. It at least one embodiment, the method includes adding a large volume of foam to the returned unhardened concrete and then mixing the foam with the returned concrete in the ready-mix concrete truck or other concrete mixing devices. Through the mixing of foam with the returned concrete, the hydrated cement and aggregate particles are separated by large volumes of air voids, which dramatically reduce the strength of the resulting high-porosity concrete. The treated concrete is discharged and allowed to solidify in this weakened state, after which it is easily broken into loose particulate material that can be sold or reused.

Classes IPC  ?

• B28B 13/02 - Alimentation en matériau non façonné des moules ou des appareillages destinés à la fabrication d'objets façonnés
• B28B 13/04 - Éjection des objets façonnés

Produits et services

concrete admixture process in the nature of recycling