Abstract: A form device for cellular concrete, including a number of piled-up form units having a heat-insulating bottom and shell, a heat-insulating top board, and a bottom-to-shell joint. A cellular concrete manufacture is produced by mixing cement with warm water at a temperature of 40.degree. to 75.degree. C. to form a warm cement mortar, mixing the mortar with a bubbled warm frother solution to form a warm cellular concrete paste, and hardening the paste using such heat-insulating form device.
Abstract: A cellular concrete composition containing as a frother, polycarboxylic acids and organosilicon compounds, or together with alkylene glycols and/or nonionic active agents. It is made by mixing a cement paste with a bubbled frother solution containing polycarboxylic acids and organosilicon compounds or together with alkylene glycols and/or nonionic surface active agents, follow by casting the mixture into a form to solidify.
Abstract: A cellular concrete composition having improved strength consisting of hydraulic cement, water and at least one alpha, beta-unsaturated dicarboxylic acid such a maleic or fumaric acid. A method is also provided comprising preparing a cement paste containing hyraulic cement and water, mixing the cement paste with a bubbled frother solution containing at least one alpha, beta-unsaturated dicarboxylic acid and optionally an alkylene glycol and/or a nonionic surface-active agent, and casting the mixture in a mold to solidify.
Abstract: A cellular concrete composition containing as a frother polycarboxylic acids or together with alkylene glycols and/or nonionic surface active agents. It is made by mixing a cement paste with a bubbled frother solution containing polycarboxylic acids or together with alkylene glycols and/or nonionic surface active agents, follow by casting the mixture into a form to solidify.
Abstract: A bubble generator for producing cellular concrete which comprises an interchangeable housing containing a plurality of particles. The housing is releasably connected to a first and second retaining means at its respective first and second ends for retaining the particles in the housing. The particles contained in the housing can be the same or different in size, substantially spherical or nodular in shape, and about 100 to 6000 in number. The device generates uniform and strong bubbles of frother solution for cellular concrete.