◇◇白色硅酸盐水泥技术要求◇◇
1 三氧化硫 水泥中三氧化硫的含量应不超过3.5%。
2 细度 80μm方孔筛筛余应不超过10%。
3 凝结时间 初凝应不得早于45min，终凝应不迟于10h。
4 安定性 用沸煮法检验必须合格。
5 白度 水泥白度值应不低于87。
6 强度 水泥强度等级按规定的抗压强度和抗折强度来划分，各强度等级的各龄期强度应不低于表1数值。
◇◇Technical Targets for white silicate cement◇◇
1.Sulfur trioxide(SO3)
The content of SO3 in cement is not more than 3.5%;
2.Fineness
The testing product remain on a 0/080mm square sifter will not more than
10%;
3.Freeze time
The earliest can't be within 45min and the latest can't be over 10h;
4.Stableness
It should pass the test of boiling method;
5.Whiteness
The Whiteness of white cement is not under 87
6.Strength
The minimum number of every style is not under form 1;
| 表(form)1 |
兆帕
|
MPa |
|
标号
marks
|
抗压强度
compressive strengh
|
抗折强度
bending strengh
|
||
|
3d
|
28d
|
3d
|
28d
|
|
|
32.5
42.5 52.5 |
12.0
17.0 22.0 |
32.5
42.5 52.5 |
3.0
3.5 4.0 |
6.0
6.5 7.0 |
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