抄録
Surface qualities of concrete ground works influence performance of floors mightily. The flatness is one of the qualities which are required to concrete ground works. Flatness of concrete ground works reflects the flatness of floor finishing. In particular, this tendency is prominently in coating floors and sheeting floors which are carried out by putting finishing materials on the concrete ground works directly.
The purpose of this study is presentation of an evaluation method about the flatness of concrete ground works from a viewpoint of feeling by foot touch while stepping. In addition, we present construction management index for establishing target values of the flatness depending on requirement qualities while constructing concrete ground works.
Method of this study is following.
1) Some sample floors simulating real concrete ground works are constructed to make real flatness.
2) Sensory tests about feeling by foot touch are carried out using the samples. Psychological scales about the flatness are constructed base on results of the tests.
3) Flatness of the samples is measured.
4) Performance value corresponding to the scales is established by considering relationships between the results of 2) and 3). And the evaluation method based on the performance value was presented.
5) The performance value is calculated from many results of flatness of concrete ground works which the authors have.
From these results, management value is also calculated which is used to manage the flatness in construction sites.
Finally, we present construction management index by considering relationships between the performance value and the management value.
Conclusion of this study by above method is following.
1) Asperity on front-back direction and slope on crosswise direction in the area of touching sole are quite influence evaluation of the flatness. The degrees of influence of asperity and slope are variable by actions, hardness of sole and deformation properties of finishing materials.
2) The performance value corresponding to the psychological scales was established from the asperity and slope measured by using straight edge. In addition, the method of collating the performance value to the relationship diagrams was presented as the evaluation method about the flatness.
3) The performance value established by this study and the management value established by Japan Research Conference of Floor Construction Technology were calculated from much data of concrete ground works. Finally, the construction management index was presented by replacing the performance value to the management value based on the relationships between each other.
