Title:
PAVEMENT BLOCK AND PAVEMENT STRUCTURE
Document Type and Number:
Japanese Patent JP3430434
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the generation of noise when a road block is laid by constituting a pavement block by use of a porous concrete having a specified porosity and a surface layer formed by use of an aggregate having a specified form.
SOLUTION: A pavement block 1 is formed of a porous concrete having a whole porosity of 10-25%, and the surface layer of the pavement block 1 is formed of a porous concrete using an aggregate having a maximum dimension of 20-5mm and a uniformity coefficient of 1-3. The strength is kept by setting the porosity within 25%, and generation of noise is suppressed by setting the porosity of 10% or more, so that clogging is hardly caused. For the aggregate used for the surface layer, the maximum dimension is set to 20-5mm, whereby generation of noise is suppressed, clogging is hardly caused, and the reduction in performance after the lapse of a long period is prevented, the uniformity coefficient is set to 1-3, whereby a sufficient cavity is provided to prevent the clogging. A pavement block having such a structure is laid, whereby noise generated in vehicle traveling can be reduced.
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Inventors:
Shigeo Suda
Minoru Hata
Minoru Hata
Application Number:
JP33349996A
Publication Date:
July 28, 2003
Filing Date:
December 13, 1996
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
E01C5/00; E01C7/02; E01C13/04; (IPC1-7): E01C5/00; E01C7/02
Domestic Patent References:
| JP8260407A | ||||
| JP892910A |
Attorney, Agent or Firm:
Katsumi Udaka
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