2004 Fiscal Year Final Research Report Summary

The Elasticity of Concrete Plates Made by Mixing Rubber Chips of Used Tire in Concrete

Research Project

Project/Area Number	14550471
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	土木材料・力学一般
Research Institution	Kyushu Kyoritsu University
Principal Investigator	TAKAYAMA Shunichi Kyushu Kyoritsu Univ., Engineering, Prof., 工学部, 教授 (50039137)
Co-Investigator(Kenkyū-buntansha)	NARUTOMI Masaru Kyushu Kyoritsu Univ., Engineering, Professor, 教授 (70172591) KUWAHARA Kouji Misawa Touyou Co., LTD., Researcher, 品質保証室, 研究職
Project Period (FY)	2002 – 2004
Keywords	recycle / rubber chip / used tire / elasticity / impaclked value
Research Abstract	The authors made concrete plates by using rubber chips in concrete (by volume percentage 10,20,30,40 and 50) with large air content. Using these specimen, the elasticity was measured by golf ball, this is termed GB coefficient. The authors set the accelerometer at the legs of human and wooden staff (length 90cm and diameter 5cm, 3cm). When dropped from the height of 5cm or 7cm, the impact values on human legs were measured. (1)GB coefficient decreases with the increase in volume of the rubber chip mixing. The authors found out that, the increase of rubber chips volume decreases the impact on human leg and wooden staff. (2)The authors also found out that, the GB coefficient is highly correlated to the impact strength on human legs and wooden staff.

(4 results)