| Title |
The Experimental Study on the Early Properties of High Volume Fly-Ash Concrete |
| Keywords |
fly-ash ; demolding ; primary age |
| Abstract |
To study of binder and fine aggregate a lot of replacement fly-ash concrete, initial characteristics, standard environment of curing temperature 20℃, hot-weather environment, cold weather environment of curing temperature 5℃. Flash concrete tested slump, air contest, setting and Hardening concrete valuated setting period of form, day of age 3, 7, 28 compression strength in sealing curing. Underwater curing specimen compression strength of age 3, 7, 28day used strength change accordingly fly-ash concrete curing temperature. Purpose of study is consultation materials in field that variety of fly-ash replacement concrete mix proportion comparison and valuation.
(1) Experiment result age 28day compression strength more higher plan concrete then standard environment in curing temperature 20℃, cold weather environment in curing temperature 5℃. most strength F43 is hot-weather environment in curing temperature 35℃ replacement binder 25%, fine aggregate 15%.
(2) Hot-weather environment replacement a mount of fly-ash is a same of plan concrete setting period of form. Age 28day compression strength replacement a mount of fly-ash more hot-weather concrete then plan concrete. |