Flowable mortars have a wide range of applications. Common products include self-leveling cement, self-leveling gypsum, and ECC mortars, grouting materials, grouting compounds, support mortars, repair mortars, and waterproof coatings. Due to workability requirements, flowable mortars are often thin and fluid, making the sand and powder in the system prone to sinking, leading to delamination. To address this, silica fume, cellulose ether, and suspension stabilizers are often added during product development. These materials can improve mortar stability and prevent delamination.

Suspension stabilizers are viscosity modifiers composed of a variety of materials, including inorganic nanomaterials and high-molecular-weight water-based polymers. Used in flowable mortar systems, they form a three-dimensional network microstructure, supporting the sinking of sand and powder, thereby ensuring uniform distribution. They provide multiple benefits, including water retention, suspension, and water seepage prevention. This product offers the following advantages:

1. Anti-settling: It offers better suspension and anti-delamination properties than cellulose ethers, and its anti-settling effect improves with increasing dosage.

2. Water Sensitivity: This material can reduce the water sensitivity of fluid mortar, allowing a 5-10% increase in water usage without causing delamination, bleeding, or segregation. In self-leveling cement, a 10% increase in water usage keeps the fluidity within 140-160 mm without causing bleeding, delamination, or segregation.

3. Water Locking and Retention: This material locks free water within the mortar, preventing bleeding and segregation.

4. Self-Curing: The free water locked within the mortar is slowly released and continues to react with unhydrated cement, improving the mortar's later strength, reducing shrinkage, and enhancing crack resistance.

Application of Suspension Stabilizers in Flowable Mortar

1) Typical Application in Self-Leveling Cement:

425 Cement 280g

Sulfoaluminum Cement 120g

Gypsum 25g

Fine Sand 400g

Calcium Carbonate (Calcium Carbonate) to 1000g

Water Reducer 1.0g

Tartaric Acid 0.8g

Suspension Stabilizer 1.0g

Defoamer 0.7g

Latex Powder 10g

Lithium Carbonate 0.3g

2) The dosage of suspension stabilizer in gypsum self-leveling mortar is 0.05-0.1%, which easily solves system delamination and bleeding.

3) The dosage in grouting, grouting, and bearing mortar is 0.01-0.03% of the total mortar volume; this significantly reduces the difficulty of formula adjustments and saves time and costs.

4) In a flowable mortar system, the appropriate dosage of suspension stabilizer can make the mortar viscous but not thick, achieving good flowability while increasing mortar cohesion.

5) After curing, mortars such as grouting materials and grouting materials have a high density, making it difficult for moisture in the air to penetrate the mortar, resulting in slow or negative strength growth after 7 days. The water-locking and water-retaining function of the suspension stabilizer can slowly release the free water trapped in the system, allowing it to continue reacting with unhydrated cement, thereby increasing the mortar's later strength, reducing shrinkage, and improving crack resistance.