Method for the manufacture of concrete and like products
Method and apparatus for the manufacture of concrete and like products
ApplicationNo. 11064756 filed on 02/24/2005
US Classes:264/37.14, Of gaseous process material (e.g., cooling gas, blowing gas, etc.)264/42, Of inorganic materials264/50By mechanically introducing gas into material
ExaminersPrimary: McDowell, Suzanne E.
Attorney, Agent or Firm
Foreign Patent References
International ClassB29B 17/00
AbstractA process for sequestering carbon dioxide from the flue gas emitted from a combustion chamber is disclosed. In the process, a foam including a foaming agent and the flue gas is formed, and the foam is added to a mixture including a cementitious material (e.g., fly ash) and water to form a foamed mixture. Thereafter, the foamed mixture is allowed to set, preferably to a controlled low-strength material having a compressive strength of 1200 psi or less. The carbon dioxide in the flue gas and waste heat reacts with hydration products in the controlled low-strength material to increase strength. In this process, the carbon dioxide is sequestered. The CLSM can be crushed or pelletized to form a lightweight aggregate with properties similar to the naturally occurring mineral, pumice.