Description
SPS-03(slump retention type) is a new generation of Eco-friendly high performance polycarboxylate superplasticizer developed by our company with DD-909 (TPEG2400) as main raw material, SPS-03 can improve the plastic index of the fresh concrete owing to its superior slump retention, extremely high water reducing rate, thus greatly enhance the pumping and work performance of the concretes, it also exhibits superior performance in strength growth. It can be widely used to common concretes, pump concretes, super-fluid self compacting and high-strength durability concretes, especially, it exhibits superior performance in high strength, high performance concretes, precast concretes, super fluid free vibration self leveling concretes.
Technical Principle
The main chains of the high performance polycarboxylate water reducing agent molecular are absorbed onto the surface of the cement granulates, which can effectively hinder the hydration, enhance its flowing retention ability, the branch chains surround by the cement granulates, play dual roles of steric hindrance and electrostatic repulsion, it is totally different to the traditional water reducing agents, which principal is dispersing cement granulates by electrostatic repulsion, so the high performance polycarboxylate water reducing agent has better dispersion and water reducing effect, which makes the comprehensive performance of the concrete products attain a qualitative leap.
Advantages/Characteristics:
1. Extremely high water reducing rate: Excellent dispersion can provide strong water reducing effect and water reducing rate can attain 40% or above, which assures improving the working performance of the concretes, enhancing the concrete strength and saving cement application amount.
2. Production controllability: The water reducing rate, flowing retention ability and air entrainment performance of this SPS-03water reducer can by adjusted by changing the molecular weight of the main chains, length of the side-chains, density and types of the side chain groups.
3. Superior slump retention performance: Excellent slump retention performance, particularly, it exhibits good performance in low slump retention, which assures the working performance of the concrete while not influencing the normal setting of the concretes.
4. Good adhesion: It has good adhesion to the concretes, which makes the concretes have good workability, no delamination, no isolation, no secretion of cohesive water.
5. Good dispersion: The concretes has very good fluidity, easy to cast and compact, adaptable to self-compacting concretes.
6. High strength growth rate:It has higher strength growth rate and higher early strength growth rate, which improves shrinkage performance and reduces the carbonation rate of concrete.
7. Wide adaptability: It has wide adaptability with good dispersion and flowing retention ability to variety of silicate cements, common silicate cements, slag silicate cements and various admixtures.
8. Superior durability: low porosity, low alkali and chlorine ion content can increase the durability of the concrete.
9. Environment friend: No formaldehyde and other harmful ingredients.
Usage
1. Generally, the dosage range is 0.25%-0.8%, it can beyond this range properly for special cements or aggregates.
2.The compounding rate for specific cements is determined by tests. It can be mixed with calculated water first or added into concrete stirrer together with calculated water. Recommended stirring time for its concrete stirrer is at least 150s for good water reducing effect. The concrete mixing tests should be carried out before using so as to assure the concrete quality.
3.It can be compounded with various retarders, defoamers, air entraining agents and
and sodium lignosulphonates.
4.SPC-03 is sold as raw materials and is suggested to be added into concrete or other materials after being compounded. As this product is not used by end users directly, the usage methods and conditions of the end users are not under our control . We can't predict the accuracy of the product performance. We suggest the product to be used by reference of your test and compounding techniques.
Application
1. It is applicable to various premixed and precast concretes for industrial and civil architectures, especially to low grade commodity concretes.
2. It is particularly applicable to various national construction works with high performance requirements for the concretes , such as water industry, marine works, seaports, traffics, electric powders etc.
3. It is applicable to the special concretes, such as high strength, high durability, self-compaction and various prefabricated parts etc..
Quality Specification
Item | Unit | Standard |
Appearance | / | Colorless to light yellow viscous liquid |
Density | g/cm3 | 1.08-1.09 |
PH | / | 5-7 |
Solid Content | % | 40±0.5, 50±1.0 |
Initial Water Reducing Ratio | % | ≥15 |
Slump Retention Value | mm | 2h | 220 |
3h | 210 |
Cl- | % | ≤0.01 |
Na2SO4 | % | ≤0.2 |