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A platform for research: civil engineering, architecture and urbanism
Modified calcium oxide expansion agent for cement concrete and preparation method of modified calcium oxide expansion agent
The invention provides a modified calcium oxide expansion agent for cement concrete and a preparation method of the modified calcium oxide expansion agent. The modified calcium oxide expansion agent for the cement concrete is prepared from an ethylene-vinyl acetate copolymer and calcium oxide expansion clinker, wherein the surface of the calcium oxide expansion clinker is coated with the ethylene-vinyl acetate copolymer, and the ethylene-vinyl acetate copolymer accounts for 0.05-10% the total mass of the modified calcium oxide expansion agent for the cement concrete; the specific surface area of the calcium oxide expansion clinker is 100-600m<2>/kg. According to the modified calcium oxide expansion agent for the cement concrete, provided by the invention, the hydration process of the calcium oxide clinker can be adjusted, the invalid hydration of a plastic stage of the concrete is reduced, the hardened expansion quantity is increased, and the shelf life of the expansion agent product is prolonged; the expansion agent can be applied to the crack resisting and seepage prevention of a concrete structure and can be used for greatly improving the durability of the concrete.
Modified calcium oxide expansion agent for cement concrete and preparation method of modified calcium oxide expansion agent
The invention provides a modified calcium oxide expansion agent for cement concrete and a preparation method of the modified calcium oxide expansion agent. The modified calcium oxide expansion agent for the cement concrete is prepared from an ethylene-vinyl acetate copolymer and calcium oxide expansion clinker, wherein the surface of the calcium oxide expansion clinker is coated with the ethylene-vinyl acetate copolymer, and the ethylene-vinyl acetate copolymer accounts for 0.05-10% the total mass of the modified calcium oxide expansion agent for the cement concrete; the specific surface area of the calcium oxide expansion clinker is 100-600m<2>/kg. According to the modified calcium oxide expansion agent for the cement concrete, provided by the invention, the hydration process of the calcium oxide clinker can be adjusted, the invalid hydration of a plastic stage of the concrete is reduced, the hardened expansion quantity is increased, and the shelf life of the expansion agent product is prolonged; the expansion agent can be applied to the crack resisting and seepage prevention of a concrete structure and can be used for greatly improving the durability of the concrete.
Modified calcium oxide expansion agent for cement concrete and preparation method of modified calcium oxide expansion agent
WANG RUI (author) / LU ANQUN (author) / ZHANG SHOUZHI (author) / CHENG JUN (author) / LI HUA (author) / YAO TING (author) / JIANG YONGJING (author)
2015-06-10
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015
| European Patent Office | 2015
Modified calcium oxide expansion agent for cement concrete
| European Patent Office | 2015
Modified calcium oxide cement concrete expansion agent and preparation method thereof
| European Patent Office | 2015
Modified calcium oxide expansive agent used for cement concrete and preparation method thereof
| European Patent Office | 2015