缓凝剂
Chaton brand BT-7010 type sulfur aluminates salt used for cement retarder
缓凝剂（%） | 0 | 0.1 | 0.3 | 0.5 | 1.0 | 3.0 |
硫铝酸盐水泥初凝（min） | 30 | 48 | 70 | 110 | 240(4h) | 1320(22h) |
对硫铝酸盐水泥的缓凝效果比较明显，一般的应用范围为0.1%～0.5%，如果加入量到达3%时，水泥将长达22h不凝结，这是一种极限应用的情况。
On sulphurized aluminates salt cement retarders as well as more obvious effects, general application scope for 0.1%～0.5%, if addition amount of cement will arrive 3%; for 22h not condensation, this is a kind of extreme application situation.
