4x8 Concrete Test Cylinder Molds with Dome Lids, Grey (Case of 36)

4x8 Concrete Test Cylinder Molds with Dome Lids, Grey (Case of 36)

Ensure your concrete meets the highest standards of strength and quality with our 4x8 Concrete Test Cylinder Molds. Sold in a convenient case of 36, these grey, single-use molds are engineered for accuracy, consistency, and reliability in all your concrete testing applications.

Our concrete test cylinders are manufactured as a single, injection-molded plastic unit, ensuring exceptional dimensional uniformity for the most accurate test results. The non-absorbent plastic is weather-resistant and durable, eliminating job site storage problems and guaranteeing consistent performance in any condition. Each mold is designed to meet rigorous industry standards, including ASTM C31, C39, C192, C470 and AASHTO M205, T22, T23, T126.

The molds feature a 4-inch inner diameter and an 8-inch height, providing the standard specimen size required for compressive strength testing. The single-piece construction and smooth interior surface allow for easy stripping of the cured concrete specimen, while an integrated lip adds extra strength and makes handling easier.

Key Features & Specifications

• Consistent Dimensional Accuracy: Precision-molded as a single piece to ensure every mold has a uniform shape and size, which is critical for reliable test results.
• Durable Construction: Made from weather-resistant, non-absorbent plastic that won't deform or degrade, even in harsh job site environments.
• Easy to Use: The single-use design eliminates the need for cleaning and prevents cross-contamination between samples.
• Sample Protection: Each mold comes with a convenient, pre-attached domed lid to protect the sample and prevent moisture loss during initial curing and transport. Flat lids are also available separately for easy stacking and sample management.
• Unlimited Shelf Life: With no expiration date, our molds are always ready for use, reducing storage worries and waste.
• Industry Compliance: Fully meets ASTM and AASHTO standards for creating concrete test specimens.
• Easy Stripping: The smooth interior allows for effortless removal of the cured concrete cylinder. An optional stripping tool is available for even faster, damage-free specimen removal.

Applications & Usage

These concrete cylinder molds are essential tools for a wide range of applications:

• Compressive Strength Testing: The primary use is to create standardized specimens for testing the compressive strength of a concrete mix, ensuring it meets design specifications.
• Construction Quality Control: Used regularly on construction sites to verify the quality and consistency of concrete batches throughout a project.
• Mix Design Verification: Essential for testing and confirming the properties of new concrete mix designs before large-scale application.
• Research & Development: Ideal for academic and industrial research projects focused on developing new concrete technologies and materials.
• Durability Testing: Specimens can be used to assess the long-term durability of concrete under various environmental conditions.

How to Use

1. Fill: Place the mold on a level, stable surface and fill it with freshly mixed concrete in layers.
2. Consolidate: Compact each layer using a standard tamping rod or mechanical vibrator to remove air voids.
3. Finish: Strike off the top surface to create a smooth, level finish.
4. Cure (Initial): Attach the domed lid and store the cylinder in a location where it will be protected from the elements and maintain proper temperature for the initial curing period (typically 24-48 hours).
5. Strip & Cure (Final): After the initial set, carefully remove the plastic mold. Place the bare concrete cylinder in a controlled environment, such as a water storage tank or moist curing room, until it reaches the desired age for testing (e.g., 7, 14, or 28 days).
6. Test: Use a calibrated compression testing machine to determine the ultimate compressive strength of the concrete cylinder.

What's Included

• 36 x 4x8 Concrete Test Cylinder Molds
• 36 x Attached Domed Lids

Why Choose Our Molds?

When accuracy is non-negotiable, you need equipment you can trust. Our concrete cylinder molds provide the reliability and precision required by civil engineers, construction professionals, and testing laboratories. By eliminating variables like inconsistent dimensions and moisture loss, you can be confident that your test results accurately reflect the true strength of your concrete.