Concrete pole and manufacturing method therefor
AssigneePu Song Won
InventorYeong Ho Cho
Life of this patent
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Abstract
A method for manufacturing a concrete pole, includes steps of preparing a mold with PC steel bars; preparing a concrete composition comprising cement 19˜21 weight percent, Pozzolanic material 3˜5 weight percent, fine aggregate 25˜40 weight percent, natural stone aggregate 30˜45 weight percent, chemical admixture 0.3˜0.4 weight percent, inorganic pigment 0.4˜1.0 weight percent, and water 6˜7 weight percent; pouring the concrete composition into the mold; shaping the poured composition into a hollow pole; curing the shaped pole by steam at a temperature range from 75° C. to 85° C. from 6 to 8 hours; removing the mold from the cured pole; and grinding the outer surface of the pole so that the pattern and color of the natural stones are exposed on the outer surface.
Claims15
A method for manufacturing a concrete pole, comprising steps of:
- a) preparing a mold;
- b) preparing a first concrete composition comprising cement 19˜21 weight percent, Pozzolanic material 3˜5 weight percent, fine aggregate 25˜40 weight percent, natural stone aggregate 30˜45 weight percent, chemical admixture 0.3˜0.4 weight percent, inorganic pigment 0.4˜1.0 weight percent, and water 6˜7 weight percent;
- c) pouring the first concrete composition into the mold;
- d) shaping the poured composition into a hollow pole;
- e) curing the shaped pole by steam at predetermined temperature and time;
- f) removing the mold from the cured pole;
- and
- g) grinding the outer surface of the pole whereby the pattern and color of the natural stories are exposed on the outer surface.
Dependencies are inferred from the claim text.