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The following is a comprehensive list of testing equipment commonly found in a mobile concrete laboratory. These tools are essential for conducting various quality control and performance tests on fresh and hardened concrete:
- **Scoop for sampling of fresh concrete**: Used to collect representative samples of freshly mixed concrete.
- **Slump test set**: Measures the workability of fresh concrete by assessing its consistency.
- **SCC testing apparatus**: Designed for testing Self-Compacting Concrete (SCC) properties such as flowability and stability.
- **Degree of Compactability**: Evaluates how well concrete can be compacted under vibration or mechanical action.
- **K-Slump tester**: A specialized device used to measure the slump of highly fluid concrete.
- **Vebe test consistometer**: Measures the consistency of stiff or semi-stiff concrete by determining the time it takes for the mixture to consolidate.
- **Compaction Factor apparatus**: Determines the compaction factor of fresh concrete, indicating its workability.
- **Flow table test apparatus**: Assesses the flow characteristics of SCC by measuring the spread of the concrete after being dropped from a height.
- **Concrete mixer**: Used to prepare small batches of concrete for testing purposes.
- **Concrete core drill**: Extracts cylindrical samples from hardened concrete structures for further analysis.
- **Cube moulds**: Moulds used to cast standard 150 mm x 150 mm x 150 mm concrete cubes for compressive strength testing.
- **Cylinder moulds**: Moulds for casting 150 mm diameter x 300 mm height concrete cylinders for compressive and other strength tests.
- **Beam moulds**: Used to cast concrete beams for flexural strength testing.
- **Mixture pressure weep age tester**: Measures the water retention and bleeding characteristics of fresh concrete.
- **Curing cabinet and tank**: Provides controlled conditions for curing concrete specimens.
- **Specimen Grinding machine**: Used to smooth and flatten concrete specimen surfaces for accurate testing.
- **Specimen Capping machine**: Applies a flat surface to concrete specimens for uniform load distribution during compression tests.
- **Specimen cutting machine**: Cuts concrete specimens into desired shapes and sizes for testing.
- **Concrete Water impermeability apparatus**: Tests the ability of concrete to resist water penetration.
- **Shrinkage and expansion apparatus**: Measures the dimensional changes in concrete due to drying or hydration.
- **Creep testing machine for concrete**: Evaluates the long-term deformation of concrete under sustained loading.
- **Elastic modulus of concrete**: Measures the stiffness of concrete using stress-strain relationships.
- **Digital concrete penetration test apparatus**: Determines the depth of penetration of a probe into hardened concrete to assess surface hardness.
- **Vibration table**: Used to compact fresh concrete samples through mechanical vibration.
- **Concrete vibrator**: Helps in removing air voids from freshly placed concrete.
- **Compression testing machine**: Conducts compressive strength tests on concrete specimens.
- **Proving rings**: Used to measure force applied during testing procedures.
- **Concrete test hammer**: Also known as a rebound hammer, it measures the surface hardness of concrete.
- **Calibration anvil**: A reference block used to calibrate testing instruments.
- **Pull-off strength (bond strength)**: Measures the adhesion strength between concrete and coatings or reinforcements.
- **Resistivity Test**: Assesses the electrical resistivity of concrete, which is related to its durability and chloride ion penetration resistance.
- **Crack measurement microscope**: Used to examine and measure micro-cracks on concrete surfaces.
- **Rebar location and corrosion measuring system**: Detects the position of embedded reinforcement and evaluates its corrosion level.
- **Chloride ion penetration**: Assesses the ability of concrete to resist the ingress of chlorides, which can cause rebar corrosion.
This equipment enables engineers and technicians to conduct thorough evaluations of concrete properties, ensuring that construction materials meet required standards and specifications.
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