1. The effect of the coarse and fine aggregate on initial mechanical properties of concrete in the steam curing is studied.

2. The fine aggregate is the micro - particle which is machine - made by rock is mainly less than 0.

3. The strains with high-quality high-strength cement, fine aggregate even add a mixture of high-performance color additive powder products.

4. As concrete fine aggregate, it can improve structure of interface between aggregates and cement paste for its reactivity, then can increase the concrete flexural strength.

5. Tests show that clay in fine aggregate affected the water stability of asphalt mixture markedly; the permeable critical air void is 7.5?

6. The water consumption of particle shaping recycled fine aggregate concrete is higher than that of natural aggregate concrete.

7. The limits of micro fines content in manufactured fine aggregate (MFA) stipulated in current standard are still disputed and restrict application of MFA and rational utilization of micro fines.

8. The larger the amount of fine aggregate is and the smaller fineness modulus is, the smaller the rate of pressure bleeding becomes.

9. Materials whose grain size distributions fall within the limits specified for zone 3 fine aggregates are well suited for certain tasks.

10. Slices from the top, bottom, sides and bulk of each specimen were examined by methanol exchange, quantitative determination of coarse and fine aggregate and backscattered electron imaging in the SEM.

11. Finally, the formulation of both modulus of elasticity and simplified stress-stain relationship curve on C45 fine aggregate concrete were proposed.

12. With gradually increasing of the civil construction and reducing of useable natural sand in our country, the manufactured sand will be inevitably selected as fine aggregate used in concrete.

13. When the bulk specific gravity of coarse aggregate and the apparent specific gravity of fine aggregate are used to compute VMA value, the VMA value is greater than the VMA value by American method.

14. The basic principle is the VCA formed by the coarse aggregate is filled with the fine aggregate, the filling, the asphalt and the preconcerted void content.

15. The issue introduces the performance of blast furnace slag and test results of dry-mixed mortar mixed with the BF slag as fine aggregate.

16. This is the first report in our country that the compound damage to the concrete in marine environment was caused by the alkali-aggregate reaction of fine aggregate and erosion of the magnesium salt.

17. The research achievement of the embankment constructed with frost susceptibe a loose fine aggregate and fly ash and frost prevention are introduced.

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18. Concretes of C30 and C60 were prepared with iron mine tailings as fine aggregate and coarse aggregate and with natural sand and common crushed stone separately.

19. The results show that best permanent deformation resistance can be got when continuous dense gradation, which has even arrangement of coarse and fine aggregate is adopted.

20. By the means of adding mineral admixture and high-range water reducer, this article used the manufactured sand as the fine aggregate to produce the high strength flowing manufactured sand concrete.

21. Through the study of packing and filling characteristics of aggregate, the dosages of coarse and fine aggregate and filling were calculated for aggregate of skeleton denseness asphalt mixture.

22. Dry-mixed mortar is granular or powdered mixture prepared by mixing fine aggregate with a water-retaining and thickening material, a mineral admixture and an additive in a certain proportion.

23. The results indicates as follows; the strength of high-quality recycled fine aggregate concrete is higher than that of natural aggregate concrete, and it increases with the replacement rate.

24. By experimental study, how the moisture susceptibility and volume property was influenced by the FAA value of mixed fine aggregate which includes natural sand and stone chips was discussed.