Tiger: This ancient Chinese animal symbol is an emblem of dignity, ferocity, sternness, courage, and by itself is Yin energy. Also a symbol of protection, the image of a tiger is often seen on clothing or in the home to ward off harm any semblance of harm and assure safekeeping.
Sensitivity to the length of the asphalt segment is given in Figures 19 and 20. The minimum temperatures at the asphalt surface change by 1.5C when the length of the asphalt segment is assumed to be 1 m long. The maximum temperature changes significantly by about 7.2C when an infinitely long segment is considered.
Concrete should not be exposed to temperatures 20ÂºF above the minimum placement temperatures. ACI 306R-88 Chpt 7.4 11. The temperature of the concrete and the ambient air and recorded at least twice in 24 hr period. Temperatures should be taken at more than one location, on edges and corners. 12. mix. APWA 03 30 04 2.5 E1 4. Non chloride admixtures may be used but placement, curing and protection requirements must be observed. APWA 03 30 10 3.4 A2 5. Temperature of concrete as placed should be as close to the minimum recommended value as possible (55Âº F) ACI 306R-88 Chpt 3.1 6.