1. The thixotropy and dilatability of similar soft soil are studied and the thixotropy-testing curve is drawn.

2. The flowability, sintering performance and dilatability of silica sands, olivine sands and chromite sands are studied based on laboratory and plant experiments of the slide gate packing technology.

3. The test results indicate that the dilatability is closely associated with the compaction and the difference among the diameters of the crushed clayrocks influence their characters.

4. The factors affecting dilatability of low expansion such as chemical compositions, heat treatment, plastic deformation, precipitate ph ase were analyzed.

5. The paper searches into the compactibility and the dilatability of the crushed material of the clayrock in the northwest area of China.

6. The formation ratio of the present invention is high, damp-absorbing and dilatability is low, usage is convenient, nutrition is comprehensive.

7. The influence of activator on strength and free linear dilatability and sulfate resistance of chemical waste gypsum - fly ash new road building material as well as action of water reducer are studied.

8. Due to the characteristics such as wet subside loess, dilatability of old loess, the construction techniques of crossing tunnels in the old loessial area are particular.

9. The breaking strength and resilient-elasticity recovery of PTT fabric can be increased under suitable temperature and drawing ratio during heat setting, but its dilatability took worse.