1,计算试配强度:¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
fm,o=f2+0.645δ=7.5+1.88×0.645=8.7Mpa¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
2,确定水泥用量:¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
1000(fm.o-β)¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
1000(8.7+15.09)¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
QC=¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
=¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
=242kg/m3 ¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
α*fce¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
3.03×32.5¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
3,确定水用量:¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
查表确定用水量为260kg/m3 ¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
4,确定砂的用量:¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
用砂在干燥状态下的堆积密度值1480 kg/m3 作为砂的用量.¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
所以基准配合比确定为:水泥:砂:水=295:1480:260 ¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
这个295的水泥怎么来的?¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥
用水量查表最少都是270呀。¡¼nýÇbbs.3c3t.com^}Sê¶ÞÚ¥