落完石屎後幾多日才可拆板?

落石屎時會做磚仔,
測試磚仔到達預設強度,
才可拆板,拆完板做石屎養護

There is specific requirement depending on:

1: type of structure, such as wall, slab, ss beam, cantilever beam, etc.
2: type of finish, such as F2, F4, F5, etc.
3: use of retarder

See this table!!

http://www.cedd.gov.hk/eng/publications/standards_handbooks/doc/stan_gs_2006/ga_2006_vol_2.pdf

General Specification for Civil Engineering Works, Volume 2, Chapter 14, Table 14.6

基本上第二日己經可以,但實際要二十四日右左先(旱)的,現在有許多添加濟加落D石屎到.
令到其的強度及快乾程到加快

落完石屎後一星期以後才可拆板.