About Sand Density Cone Apparatus
Specification:
A Sand Density Cone Apparatus typically includesa one-gallon (3.8L) plastic or glass jar, a detachable double metal cone with a 6.5-inch (165mm) flanged opening, a 0.5-inch (12.7mm) brass valve with stops, and a Density Base Plate.It is designed to meet standards like ASTM D1556 and AASHTO T191, for in-place density testing of soils with particle sizes up to 2 inches (51mm).
Components and Specifications
- Plastic or Glass Jar:A 1-gallon (3.8L) capacity threaded container to hold the test sand.
- Double Metal Cone:
- Threaded End:Attaches to the plastic or glass jar.
- Flanged End:A 6.5-inch (165mm) diameter opening that fits the Density Base Plate's hole.
- Cylindrical Valve:A 0.5-inch (12.7mm) diameter orifice controlled by stops, preventing rotation past the fully open or closed position.
- Density Base Plate:A 12x12 inch (305x305mm) cast aluminum alloy plate with high-edge walls, ordered separately.It provides a stable base for the sand cone and helps prevent soil loss during excavation.
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In-Place Density Testing:
The apparatus is used in conjunction with a specific, fine-grained sand (Ottawa sand) to determine the in-place density of soils.
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Soil Suitability:
The method is generally limited to soils with a maximum particle size of 2 inches (51mm).
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Standard Compliance:
The components and method are designed to meet ASTM D1556 and AASHTO T191 standards.
Reliable Field Density TestingEngineered with polished brass and powder-coated metal, the Sand Density Cone Apparatus delivers durability and precision in demanding environments. Its complete set, including a calibrated sand container and tray, allows for accurate soil density evaluation on-site. The apparatus is portable, manually operated, and designed for both 6 and 12-inch diameter test holes, making it versatile for various geotechnical applications.
Precision and ComplianceEach unit features a 1-litre sand container with clear graduations, enabling precise volume measurements essential for soil testing. Conforming to IS:2720 (Pt XXIX), the apparatus ensures high accuracy and reproducibility. Its rugged construction and reliable finish make it ideal for frequent field use by engineers, fabricators, and geotechnical professionals alike.
FAQ's of Sand Density Cone Apparatus:
Q: How does the Sand Density Cone Apparatus determine the in-situ density of soil?
A: The apparatus determines in-situ soil density by the sand replacement method. Sand is poured from the calibrated container into a hole of known size, and the volume of sand needed to fill the hole (and cone) is measured. This allows for accurate calculation of the density of the soil present before excavation.
Q: What is included in the Sand Density Cone Apparatus package?
A: The complete set includes a polished brass density cone (165 mm diameter), a metal sand container with 1-litre capacity and graduated markings, a 30 cm diameter tray, and a durable carrying case for field portability.
Q: When should this apparatus be used in geotechnical testing?
A: This apparatus is ideal for use during field density determination of soils, especially on construction sites where soil compaction quality needs verification as per IS:2720 (Pt XXIX) standards. It's commonly used during site preparation and foundation investigations.
Q: Where can the Sand Density Cone Apparatus be effectively employed?
A: It is specially designed for rugged outdoor environments, making it suitable for geotechnical and civil engineering field tests on construction sites, road building projects, or soil investigation locations throughout India.
Q: What is the process for using the Sand Density Cone Apparatus?
A: First, a hole of either 6 or 12-inch diameter is excavated in the soil. The apparatus is placed over the hole, and sand is dispensed from the calibrated container to fill both the hole and cone. Measurement of the sand volume replaced gives the in-situ soil density.
Q: Why is using this brass cone apparatus beneficial for field tests?
A: The apparatus provides high accuracy and reliability, conforming to standard test methods. Its robust construction ensures longevity, while the graduated sand container simplifies precise measurement, saving time and reducing calculation errors during field tests.
Q: How is the measurement resolution determined in this apparatus?
A: Measurement resolution depends on the graduations provided on the calibrated sand container, allowing for fine, manual readout of sand volumes for improved accuracy in density calculation.