1. Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence from environment Time Time Temperature Temperature Test condition Test condition Main influencing factors of Workability

2. Mobility decreases accordingly HydrationVaporization Waterabsorbed Water absorbed by aggregates Influence from Time By hydration and vaporization, water is absorbed by aggregates and mobility decreases accordingly.

3. The relationship between slump and time is shown in fig4.3.5. Slump decreases while time increases. Slump test should be proceeded in 15 minutes after preparation of the composite in construction. Slump Time Time Influence from Time Fig.4.2.5 Relationship between Slump and Time

4. Mobility decreases with temperature rising –Temperature must be noticed to get required workability – More mixed water in summer should be used than that in winter Temperature Influence from Temperature Slump Temperature Fig.4.2.6 Relationship between Slump and Temperature

5.  Test condition also has effects on the mobility of the concrete composite  Device condition-parameter  Concrete condition-humidity, smoothness Influence fromTest Condition Influence from Test Condition