Sika SikaGrout 328 50lb Bag

SikaGrout-328 – Precision Cementitious Grout

SikaGrout-328 is a precision-engineered, high-performance grout formulated for structural grouting applications where reliable strength and dimensional stability are critical. This non-shrink, non-metallic cementitious grout is designed to deliver consistent results in both static and dynamic load conditions, making it ideal for machinery bases, structural columns, bearing plates, and precast concrete elements. 

Powered by Sika's ViscoCrete technology, SikaGrout-328 offers exceptional fluidity while maintaining cohesive integrity during placement. It flows easily into confined areas and under baseplates, reducing the risk of voids or segregation. Whether used as a dry pack for hand placement or mixed to a fluid consistency for pump applications, it maintains excellent workability and mechanical properties. Its extended working time provides contractors with greater flexibility during installation, especially on large-scale or complex grouting jobs. With compressive strengths reaching up to 10,000 psi and certified to meet ASTM C-1107 (Grade B & C) standards, SikaGrout-328 is a trusted solution across a wide range of industrial, commercial, and infrastructure projects.

Key Features:

Extended Working Time
Allows flexible placement without sacrificing strength development or setting control.

High Early and Ultimate Strength
Achieves up to 10,000 psi compressive strength in 28 days and 5,000 psi within 24 hours (dry pack consistency).

Non-Shrink Performance
Maintains volume stability and positive expansion for maximum load transfer.

Exceptional Fluidity
Easily placed and pumped without segregation — ideal for precision grouting beneath baseplates and structural elements.

Durable and Non-Metallic
Contains no metal — resists rust, corrosion, and staining, even in wet or humid environments.

Versatile Application Range
One product for multiple consistencies (dry pack, plastic, flowable, fluid) with consistent performance across each.

Recommended Uses

SikaGrout-328 is trusted for critical grouting tasks where durability and strength are essential. It excels in structural and equipment applications across a wide range of jobsite conditions.

SikaGrout-328 is highly versatile and engineered to perform across a broad spectrum of structural and precision grouting tasks. It is commonly used for grouting machinery and equipment baseplates, as well as anchoring structural steel. The material’s fluidity and strength make it ideal for setting precast concrete panels, beams, and columns, providing a stable and long-lasting bond.

In infrastructure and industrial applications, SikaGrout-328 is frequently used to anchor bolts, pins, and dowels, and to fill tight voids under curtain walls or inaccessible areas where pumped placement is required. When used in conjunction with Sika admixtures, it can also be applied in underwater environments, making it a reliable choice for marine and submerged grouting scenarios.

Frequently Asked Questions

How fast does SikaGrout-328 gain strength?
In dry pack consistency, it reaches 5,000 psi in 1 day and 10,000 psi in 28 days. Even at fluid consistency, it achieves 3,500 psi in 1 day and 7,500 psi in 28 days.

Can it be used in underwater applications?
Yes. SikaGrout-328 can be used underwater when combined with Sika admixtures like SikaSet or Sikament 100 SC. Consult Sika technical service for mix guidance.

What is the minimum and maximum pour depth?
It can be applied in layers from ½" to 6". For applications exceeding 6", consult Sika’s technical team.

Is SikaGrout-328 pumpable?
Yes. It is specifically engineered for high-performance pump applications. Ensure proper pump selection and setup for best results.

Can it be extended with aggregate?
Yes, 3/8" pea gravel can be added for deeper placements in plastic or flowable mixes. The aggregate must meet ASTM standards and be saturated surface dry.

Does it comply with industry standards?
SikaGrout-328 meets ASTM C-1107 (Grade B & C) and is USDA certifiable, ensuring it meets strict quality and safety criteria.

Technical Specifications: