To improve not only quality by enhancing the durability of a floor slab but also reducing vibration and noise generated by construction, while a thickness is smaller than that in a conventional floor slab upper-surface thickness increasing construction method.
The surface of an existing floor slab 1 used for a bridge and a superhighway is ground, polished and cleaned, and soft concrete 2 of a slump of 10 cm or larger is placed for covering the surface of the ground, polished and cleaned floor slab 1, and the soft concrete 2 is compacted and integrated into the existing floor slab 1 by imparting high frequency vibration to a screed plate 12 of a concrete finishing device 10. The soft concrete 2 includes water, a hydraulic setting composition, an aggregate, an expansive admixture and fiber. The hydraulic setting composition uses a material for revealing a compressive strength of 10 N/mm2 or higher in 2-3 hours after construction as a hardening speed of the soft concrete 2.
| JP2007211496 | PRESTRESSED STRUCTURE |
| JP3549754 | Rating structure of steel / concrete composite truss structure |
| JPH06183574 | SUPPORT PLATE FOR BRIDGE AND RAMP |
ARAI AKIO
FUJITA HITOSHI
ENDO MITSUHIRO
SHIMONISHI MASARU
NIPPO CORP KK
TAIHEIYO CEMENT CORP
ONODA CHEMICO CO LTD
METROPOLITAN EXPRESSWAY CO LTD
| JP2007162417A | 2007-06-28 | |||
| JP2000008615A | 2000-01-11 | |||
| JPH06280391A | 1994-10-04 | |||
| JPH11207624A | 1999-08-03 | |||
| JPH09109029A | 1997-04-28 | |||
| JPH0328816A | 1991-02-07 | |||
| JPH02194202A | 1990-07-31 | |||
| JPH08333816A | 1996-12-17 | |||
| JPH01176112U | 1989-12-15 | |||
| JPH11247128A | 1999-09-14 | |||
| JP2001278653A | 2001-10-10 | |||
| JPS60195305U | 1985-12-26 | |||
| JPS5899304U | 1983-07-06 | |||
| JPH0959929A | 1997-03-04 | |||
| JPH11322400A | 1999-11-24 | |||
| JP2002308661A | 2002-10-23 | |||
| JP2002097051A | 2002-04-02 | |||
| JPH0349288A | 1991-03-04 | |||
| JPH0345341A | 1991-02-26 | |||
| JP2000345510A | 2000-12-12 |
Takashi Watanabe
Next Patent: CONCRETE CONNECTING STRUCTURE