1,计算试配强度:1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
fm,o=f2+0.645δ=7.5+1.88×0.645=8.7Mpa1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
2,确定水泥用量:1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1000(fm.o-β)1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1000(8.7+15.09)1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
QC=1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
=1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
=242kg/m3 1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
α*fce1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
3.03×32.51ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
3,确定水用量:1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
查表确定用水量为260kg/m3 1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
4,确定砂的用量:1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
用砂在干燥状态下的堆积密度值1480 kg/m3 作为砂的用量.1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
所以基准配合比确定为:水泥:砂:水=295:1480:260 1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
这个295的水泥怎么来的?1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF
用水量查表最少都是270呀。1ô!d$W bbs.3c3t.comJΪ·Éx¦ÅF