1,计算试配强度:?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
fm,o=f2+0.645δ=7.5+1.88×0.645=8.7Mpa?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
2,确定水泥用量:?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
1000(fm.o-β)?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
1000(8.7+15.09)?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
QC=?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
=?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
=242kg/m3 ?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
α*fce?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
3.03×32.5?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
3,确定水用量:?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
查表确定用水量为260kg/m3 ?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
4,确定砂的用量:?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
用砂在干燥状态下的堆积密度值1480 kg/m3 作为砂的用量.?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
所以基准配合比确定为:水泥:砂:水=295:1480:260 ?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
?°º»Óëý0Übbs.3c3t.comá bÛ®@ô
这个295的水泥怎么来的??°º»Óëý0Übbs.3c3t.comá bÛ®@ô
用水量查表最少都是270呀。?°º»Óëý0Übbs.3c3t.comá bÛ®@ô