| 水泥砖制备 |
| 添加时间：2019/10/9 14:47:55 浏览次数： |
| 水泥砖制备 Preparation of Cement Bricks 1、混料时间:混料时间长就能混均匀。干混料20分钟比10分钟的强度提高15-23%;湿混料时间以物料不结块为宜。混合好的料存放时间以2小时左右为宜，时间太长或太短，都会降低砖的抗压强度。 1. Mixing time: Mixing time is long enough to mix evenly. The strength of dry mix in 20 minutes is 15-23% higher than that in 10 minutes, and the suitable time for wet mix is material without caking. The storage time of the mixed material is about 2 hours. If the storage time is too long or too short, the compressive strength of the brick will be reduced. 2、成型压力:粘土水泥砖成型时的压力，以每平方厘米500公斤最好。在此压力下，其制品抗压强度高，耐水性能好。压力太低，不易压实。 2. Forming pressure: 500 kg per square centimeter is the best when clay cement brick is formed. Under this pressure, the products have high compressive strength and good water resistance. The pressure is too low to compact. 3、养护条件:水泥砖又称免烧砖，成型后再自然环境中淋水养护即可，养护7天龄期的强度，相当于28天龄期强度的67-90%;28天龄期强度为一个季度龄期强度的80-95%。故如养护场地小，水泥砖自然养护7天后就可出厂。 3. Maintenance conditions: Cement bricks, also known as unburned bricks, can be cured by sprinkling water in natural environment after forming. The strength of 7-day-old cement bricks is equivalent to 67-90% of that of 28-day-old cement bricks; the strength of 28-day-old cement bricks is 80-95% of that of one quarter-old cement bricks. Therefore, if the maintenance site is small, cement bricks can be manufactured after 7 days of natural maintenance. |
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