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Finishing work greatly changes slab surface quality which influences floor performance. And, characteristics of concrete also greatly influence finishability. From such backgrounds, relations between mix proportion and finishiability were examined.60 kinds of mix proportion used on actual sites and prepared for the examination were set, and finishability of them were measured. As a result, those were shown that unit water content and admixture addition ratio influenced finishability directly, and finishability was predictable clearly by a combination of both. Moreover, it was generally thought that water-bond ratio and fluidity were causes, the combination turned out to be the direct cause.

The purpose of this study is to examine a relationship between loads of lower limbs during concrete finishing work and slab flatness. Experiments were taken with 5 different concretes and forms which were size of 2,700 mm &times 3,600 mm. Electromyogram (EMG) signals during work were recorded from 4 muscles of lower limb of skilled laborer and sensory tests about workability were taken. Slab flatness was measured with straightedge method. Results showed that at lower workability concrete, the integrated EMG were greater and slab flatness was low grade. It was suggested that the loads influenced slab flatness.

Experiments to measure durability of resin floor coatings against caster-load and thermal-shock were done. Then, in several specimens, resin floor coatings were separated from slabs by loads. At that time, slab surfaces seemed to be broken. And, resin floor coatings were easily separated when surface strength of slab were low. Finally the relation between the amount of loads until separation and surface strength of slab was quantitatively shown. This relation is regarded as one kind of barometers of slab surface quality, which is necessary to construct floors corresponding to quality required from users.

Even though the same concrete is used, the amount of execution effort affects on surface quality of floor groundwork and performance with covering material. In the previous thesis, covering materials are executed on groundworks with different surface quality. The thesis shows relations among execution effort of the groundwork, flatness and work for repairing and maintenance.This thesis reports in-depth consideration based on durability against caster-load and thermal-shock. The result shows that the total work of maintenance is cut down because the more effort of groundwork is spent, the higher durability is realized and the less work of maintenance is needed.

The information system by reading ruggedness with white cane is a stable method, because it is not influenced by surroundings of the noise etc. Moreover, it has possibility to inform only to the visually handicapped person. In this theses, a measurement method of vibration of the white cane was established. In this method, a device that imitates human operation of cane is used. And this theses also describes an indication method for degree of recognition of change of floor based on comparison with the measurement result of the vibration to results of sensory tests.