huangyhg

concrete mix designs
i'm posting concrete mixes on this page because we do not have a concrete page. please review the following mixes and comment.
no. psi cement sand #4 #57 #8 water air w.r.
(-) psi lb/cy lb/cy lb/cy lb/cy lb/cy gal oz/cwt oz/cwt
1 3000 470 1235 575 1085 300 35 0.0 0.0
2 3500 470 1575 1565 34 0.4 2.5
3 3500 564 1775 1180 35 0.0 0.0
4 4000 564 1365 1275 415 36 0.4 0.0
5 4000 600 1320 1275 415 36 0.8 0.0
6 4000 517 1235 575 1085 300 35 0.0 0.0
7 4000 658 1270 1275 415 38 0.4 0.0
8 4000 715 1130 1310 365 36 1.0 0.0
continue below.
no. mr_reduc. super_plast remarks
(-) oz/cwt oz/cwt (-)
1 7.0 0.0 3000psi low curl indust. floor
2 0.0 0.0 3500psi footer mix
3 0.0 10.0 3500psi coarse grout; used in
mas. walls and 2" pump lines.
4 0.0 0.0 4000psi interior struct. mix;
used in ofc. flrs, cols.,mezz.
decks, fndn. piers.
5 7.0 0.0 4000psi ext. struct. mix(cl. c)
used in driveways, sidewalks,
docks, and dock walls.
6 7.0 0.0 prem. 4000 int. indust. flr.
7 0.0 10.0 4000psi int. high early mix
used in off. flrs, cols, mezz.
flrs, cold weather.
8 0.0 10.0 4000psi ext. high early mix
used in drives, sidewalks,
docks, and cold weather.
please let me know what your comments are?
jimbo (staff)13 jun 05 16:17
there is a "concrete" forum not far below "structural".
jimbo
buy a dictionary, keep it nearby and use it. webster's new world dictionary of american english is recommended, and webster's collegiate dictionary.
always put in 3-7% air entrainment for outside, freeze thaw and expansion for hot climates.
what is your question or concern regarding the mix design? it sounds like you're asking us to do your job. are you familiar with concrete mix design?
if non-curl is of primary importance in your mix 1, you may want to consider type k, shrinkage-compensating cement. it eliminates sawcut joints as well.

__________________
借用达朗贝尔的名言：前进吧，你会得到信心!
[url="http://www.dimcax.com"]几何尺寸与公差标准[/url]