JT-IICS type cement grinding aid
First, product introduction
The main components of this series of grinding AIDS are organic surfactants, alcoholamine substances, and other alcohol-related liquid products, which are generally brown and transparent, without irritating odor, and do not damage human health and cement concrete performance。
Specifications: 250 kg/barrel, 1 ton/barrel, bulk three specifications
密度：（20℃±1℃）1.15-1.25 (g/cm³)
PH value: (20℃±1℃) 8 ~ 10
Solid content: 50 ~ 70% (%)
Product shelf life: 12 months, the use of the product in the cement does not affect the cement shelf life
Recommended dosage: 0 of cement mass.02—0.05％（m/m）
2. Scope of application and use effect
This series of products are mainly applied to Portland cement, ordinary Portland cement, composite Portland cement, Portland slag cement, Portland fly ash cement, masonry cement and Portland volcanic ash cement。
According to its function, it is divided into early strong type, post-strong type, production type, comprehensive type and other products。
Early strength products, used in the cement production process, in the cement ratio, fineness control indicators are basically the same, can improve the 3-day compressive strength of cement 4.Above 0MPa, and the increase value of water demand of cement standard consistency is < 0.5%；
Post-strong products, used in the cement production process, under the condition that the cement ratio and fineness control indicators are basically the same, can improve the 28-day compressive strength of cement 8.Above 0MPa, and the increase value of water demand of cement standard consistency is < 0.5%；
In the process of producing cement by tube grinding, the product can increase the output of cement grinding table by more than 15% under the condition that the cement ratio and fineness control index are basically the same;
Comprehensive products, used in the cement process, under the condition that the cement ratio and fineness control indicators are basically the same, can reduce the cement clinker consumption by more than 6%, increase the mixture content of the same proportion, and increase the production by more than 8%;
3. Use examples
Table 1 P•C 42.5 Grinding mill condition before and after cement using Zhongsen grinding aid (a cement factory in Zhejiang Ø4.2m×11m combined grinding system)
|
编号 |
Mix material and dosage /% |
Total mix material /% |
Grinding aid |
SO₃ |
LOI |
Station hour (T/H) |
45μm |
比表 |
|||
|
limestone |
炉渣 |
Fly ash |
矿粉 |
||||||||
|
空白 |
4.6 |
2 |
4.1 |
6.5 |
17.2 |
0.0 |
2.1 |
3.3 |
125 |
11.8 |
342 |
|
Test sample |
6.4 |
4 |
4.2 |
9.1 |
23.5 |
0.03 |
2.2 |
4.3 |
180 |
11.2 |
344 |
Table 2 P·C 42.5 Performance of cement before and after using Zhongsen grinding aid
| 编号 |
标准 |
Setting time /min |
Compressive strength /MPa |
|||
|
初凝 |
终凝 |
3天 |
7天 |
28天 |
||
|
空白 |
26.8 |
208 |
262 |
25.8 |
40.7 |
53.2 |
|
Test sample |
27.1 |
212 |
268 |
26.0 |
47.5 |
60.8 |
4. Characteristics of cement using the grinding aid
1.The fluidity of cement powder will be increased.
2.The fluidity of cement mortar increased slightly.
3.The water consumption of standard consistency is slightly changed (the amount of mixed material is the same);
4.The setting time is slightly shortened;
5.The 45μm screening residue of cement will decrease, but the specific surface area value does not increase, and the 45μm screening residue is used to control the grinding fineness。
5. Storage methods and conditions
This series of grinding aid is weakly alkaline liquid, it is recommended to use plastic products storage equipment for closed storage, storage equipment should be placed circulation device, regular product circulation treatment to ensure product uniformity。Recommended storage temperature -10℃-40℃。
6. The method of adding when used
When it is not necessary to raise the height of the addition, the metering pump can be used directly to measure the addition;
When the feeding height of the grinding aid needs to be increased, it is generally added by two-stage pumping. The diagram is as follows:
For companies using our grinding AIDS, we provide our customers with storage tanks and related metering devices as well as testing and control methods for feeding volumes。
7. Precautions
1.The grinding aid shall be used after passing the inspection。Acceptance test methods are:
(1) A relatively simple method is to detect the density, PH value and color, or solid content of the retained sample of the new grinding aid and the grinding aid that has been used and proved qualified under the same temperature conditions, and when the two are within the error range, it can be considered qualified for use;
(2) Use an additive free cement with the same composition as the production cement，At the same time, JT-IICS and newly arrived grinding AIDS were respectively sampled in the same laboratory，The cement strength blending test was carried out，When the three-day strength of both is within the margin of error，It is qualified;The first method is generally used for continuous use of grinding AIDS，The second method is used only when there is a large difference in the quality of the grinding aid。
2.Barrel grinding aid handling, storage should prevent falling, smashing, external extrusion and close to high temperature, pile height should not exceed two barrels;
3.Before use, check the logo of the company before opening the cover, and confirm the product and model are correct before use;
4.This product is slightly corrosive to the skin, should be washed with water after skin contact, and can not be ingested;
5.When using this product, when the ambient temperature is lower than -5℃ for 5 consecutive days, insulation measures should be taken to prevent the increase of product viscosity affecting normal use;
6.The shelf life of this product is 12 months。
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