Inflaming retarding high-temperature-resisting foam concrete and preparation method thereof

Abstract

The invention discloses inflaming retarding high-temperature-resisting foam concrete and a preparation method thereof. The concrete is prepared by mixing a gel material, heat-resisting aggregates, a liquid-state composition, an admixture and a foaming agent, wherein the gel material is slag silicate cement and grade-I fly ash; the heat-resisting aggregates comprise vitrified micro-beads, crushed clay clinkers, nano clay and corundum sand; the liquid-state composition comprises a water reducing agent, water and acrylic resin; and the admixture comprises phosphate, an inorganic fire retardant, glass fibers and calcium carbonate crystal whiskers. The inflaming retarding high-temperature-resisting foam concrete prepared by the preparation method has the advantages of small density, relatively high strength, low heat conductivity coefficient, good heat insulation performance and the like; and the combustion performance is grade A, and the fireproof limit can reach 4 hours so that the inflaming retarding high-temperature-resisting foam concrete is a fireproof heat-insulation material with a good comprehensive performance.

Description

technical field [0001] The invention relates to a high-fire-resistant foam concrete, in particular to a flame-retardant and high-temperature-resistant foam concrete and a preparation method thereof, belonging to the field of fire-resistant building materials. Background technique [0002] With the implementation of national laws and regulations on building energy-saving inventions, wall insulation materials have also developed rapidly. Among them, organic insulation materials have been widely used because of their advantages of easy processing, low density and good insulation performance, such as EPS (polystyrene foam), XPS (extruded polystyrene foam) and PU (polyurethane foam), etc., but such insulation materials have caused many fire accidents, causing serious loss of life and property to the country and people. Fire safety issues have sounded the alarm, so many of these materials have been restricted to use due to poor fire ratings. According to the classification of "Cl...

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Problems solved by technology

[0003] The high fire rating is the most notable feature of inorganic thermal insulation materials. The combustion performance is Class A, such as foam concrete, aerated concrete blocks, foam glass, etc. From the perspectives of heat preservation, combustion, construction and economy, foam concrete is the most effective One of the lightweight materials with development prospects has also been widely used at present, but its stability in high temperature environments, especially under fire conditions, is not enough, the deterioration of mechanical properties and apparent quality is more significant, and the fire resistance limit is generally not high. more than 2.5h