Patent ID: 8808604
Filing Date: 2014-08-19
Classification: B28B,E04C

Abstract:
1. 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.