Carbon fibers for reinforcement of cement and cement composite m

Details Carbon fibers for reinforcement of cement and cement composite m Carbon fibers for reinforcement of cement and cement composite m

1997-06-16

1999-01-05

Marcantoni, Paul

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106711, 106717, 428368, 428378, 428408, C04B 1438

Patent

active

058556630

ABSTRACT:
There are here disclosed carbon fibers for reinforcement of cement which are obtained by applying, onto the surfaces of carbon fibers, esters of oleic acid and aliphatic monovalent alcohols, esters of oleyl alcohol and monovalent fatty acids, polyoxyalkylene bisphenol ethers or polyether esters as sizing agents, and a cement composite material having a bending strength of 300 kgf/cm.sup.2 or more which contains cut carbon fibers having a fiber length of 10 to 50 mm at a mixing volume ratio of the cut carbon fibers to the cement matrix in the range of 1 to 5%. According to the present invention, there are provided the carbon fibers for reinforcement of cement which have excellent adhesive properties to the cement, good process passage properties through a direct spray gun and good bundling properties and which are suitable for a direct spray method, and the cement composite material using the carbon fibers and having high bending strength.

REFERENCES:
patent: 5652058 (1997-07-01), Nagata et al.

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