Fast
Shipping
Quick,
Simple Ordering
Clear,
Upfront Pricing
Over 30,000
Happy Customers
Exceptional
Customer Service
Industry's Largest
Catalog
ASTM Grout Cylinders: Tapered Cylinder Mold for Volume Change
Grout plays a critical role in masonry construction by supporting the wall system and improving structural integrity. Because grout performance affects durability and safety, its composition and volume stability must meet recognized standards.
The ASTM Grout Cylinders – Tapered Cylinder Mold for Volume Change are designed to support accurate grout testing in accordance with ASTM requirements.
Importance of Grout Testing
Grout typically consists of cement, aggregate, water, and sometimes lime. Admixtures, such as air-entraining agents, may be added to enhance performance. These components must be carefully controlled to meet masonry construction standards.
Compressive strength testing is commonly performed according to ASTM C1019, which defines proper sampling and testing methods. For ASTM grout prism testing, accessories like the Masonry Block Cap (12 × 16 in) from Certified MTP are often used.
Grout testing is commonly performed alongside other
Concrete Testing Equipment to ensure overall material quality.
Grout Cylinders and ASTM Standards
Grout cylinders are widely used in the construction industry to evaluate compressive strength, durability, and volume stability. ASTM standards provide clear guidance on specimen preparation, curing, and testing.
Key ASTM standards include:
- ASTM C39 – Compressive strength of cylindrical concrete specimens
- ASTM C31 – Making and curing concrete test specimens
- ASTM C1090 – Grout volume change testing
Following these standards ensures grout meets performance requirements for long-lasting masonry structures.
Applications of Grout Mixes
Grout mixes are designed to meet specific project needs, including strength, flowability, and durability. Proportions of cement, aggregate, and water must be carefully controlled.
Common grout types include:
- Fine grout – Used for smaller grout spaces
- Coarse grout – Used for larger grout spaces, such as CMUs
Coarse grout is often used with reinforcement, such as rebar, to improve structural performance. These applications are frequently evaluated using
Material Testing Equipment.
Cylinders, Tapered, for Grout Volume Change
Meets: ASTM C1090
Grout specimens can be prepared using site-mixed or ready-mixed grout. Ready-mixed grout is produced according to ASTM C476, which defines material proportions and mixing requirements.
The cementitious mixture fills masonry cores and cavities while providing structural integrity. Proper specimen preparation is essential for reliable test results.
What Is Grout Volume Change Testing?
Grout volume change testing evaluates how hydraulic-cement grout behaves over time. The test method outlined in ASTM C1090 measures changes in specimen height under controlled conditions.
This test determines whether grout will shrink or expand, which could affect surrounding masonry. Volume stability is critical for long-term durability and safety.
Grout volume change testing is often part of a broader Non-Destructive Testing Equipment program for masonry and concrete evaluation.
Curing Test Specimens
Proper curing is essential to achieve accurate test results. According to ASTM C31:
- Initial curing lasts 24 hours
- Temperature must remain between 60–80°F (15–27°C)
- Specimens should be protected from direct sunlight and heat sources
After initial curing, specimens are stored in a moist room or water tank. Correct curing supports full cement hydration and maximum load-bearing capacity.
Tapered Cylinder Molds
Tapered cylinder molds are specifically designed for grout volume change testing. They are made from metal or plastic and feature a tapered shape for easy removal of cured specimens.
Key advantages include:
- Non-absorbent and non-reactive surfaces
- Accurate height measurements
- Consistent and repeatable test results
The tapered design improves measurement precision. For additional strength testing, 4 × 8 concrete cylinder molds are commonly used alongside grout testing tools.
How to Perform the Grout Volume Change Test
Grout volume change testing must follow ASTM C1090 carefully. The general process includes:
- Specimen preparation: Grout is mixed and placed into tapered cylinder molds
- Initial curing: Specimens are cured at 23 ± 2°C (73 ± 3°F)
- Measurement: Height changes are recorded at 1, 7, 14, and 28 days
- Data analysis: Measurements are used to calculate grout volume change
Accurate testing ensures grout meets performance standards for masonry construction.
