CVG 2141 Lecture Notes - Lecture 4: Evaporation, Straight Edge, Fly Ash

• School: University of Ottawa
• Department: Civil Engineering
• Course: CVG 2141
• Professor: Abdulridha Alaa

Document Summary

List given information: type of structure, 28 day f"c, cement sg, ca sg, ca max nom sixe , fa. Choose the maximum slump: near-zero = low w/c, normal, shear = lack of cohesion, collapse = high w/c. Maximum aggregate size: given or will depend on: b/w forms: <1/5, b/w bars: < min of clear spacing, slab: <1/3 depth. Water/cement ratio: depends on exposure class, from table 9. 1, adjust required f"c, chose the larger value. Required avg f"c: use chart equations, use the larger, use table 9. 10 for sd if at least 15 samples were used, if statistical data is not available use table 9. 11. Water cement ratio: depends on 28 day compressive strength. Choose air content category: depends on exposure class, from table 9. 1. Cement content: depends on max nominal size of ca, should be at last 335kg/m^3, do not modify otherwise, if fly ash is included in the design.