Because of the micro silicon powder with high activity, reducing water, enhancement of excellent performance, position in the construction of cement mortar and concrete industry is more important. Therefore, widely used in building, metallurgy, chemical, cement and other industries.
Micro silica ash relatively light, transportation is difficult and costly. Through the micro silica encryption technology greatly reduces the labor cost and good working environment.
No encryption test or measurement method of micro silica fume flow:
For non encrypted micro silica fume can use simple way, namely: 40 grams of water: 60 grams of micro silica fume: 0.2 grams of dispersant (trimer or P530), fully stirring, dumping on the glass plate, natural flow, measuring flowing area, if the average 130mm diameter is greater than the liquidity will generally good, but even the best do not setting the test block, according to the amount of water final judgment of mobility is good or bad. But now the domestic silica fume can reach this standard too little.
Encryption of micro silica detection or measurement method of flow experiment:
Toencryption micro silicon powder, the method can not be used. Only in amorphous samples were determined: no testing of the amorphous samples no fixed formula, test example: available 70% of bauxite, 20% 0-325 mesh fine alumina powder, 3% silica fume, 7% alumina cement, six partial sodium phosphate 0.2% water estimated 8-9%, the jump table or vibration test bench castable slurry vibrating flow value, minimum water flow value maximum is preferred.
Note the details and flowability of the micro silicon powder measurement:
1, micro silica fume to completely stirred into a liquid form, if mixing for a long time to find micro silica fume or more viscous prove selected differential silicon sample flow effects of liquidity in the silica fume, not carried out the following experiments.
2, be sure to the glass plate is placed on a horizontal table, pour such as micro silica fume slurry to spread more evenly, favorable for the next measurement.
3, different micro silica fume products liquidity is not the same, recommendations were, on average, mixed, take the several micro silicon powder samples were measured experimentally.
