Information on the most widely used ASTM standards within the materials testing industry
Model: UT1023, ASTM C1550
UT1023 Fiber reinforced concrete (FRC) Flexural Testing Machine can according ASTM C1550 determines the flexural toughness of fiber-reinforced concrete. Flexural toughness is the maximum stress (put) onto a specimen before it cracks or breaks. In this instance it is expressed as energy absorption in the post-crack range using a round panel supported on three symmetrically arranged pivots and subjected to a central load point. Range 300KN, 600KN, 1000KN, 2000KN, and 3000KN, these strength testing equipment are extremely handy and are easy to use for testing cement, concrete and mortar cubes. We lay utmost importance on equipment design and construct with emphasis on ease of operation.
ASTM C1550 Standard Test Method for Flexural Toughness of Fiber Reinforced Concrete (Using Centrally Loaded Round Panel)
EN 14488-5 Testing sprayed concrete - Part 5: Determination of energy absorption capacity of fibre reinforced slab specimens
General Introduction
UT1023 Fiber Reinforced Concrete Flexural Testing Machine | ASTM C1550 | UnitedTest
UnitedTest manufactures the UT1023 Fiber Reinforced Concrete (FRC) Flexural Testing Machine, a dedicated load frame built to perform ASTM C1550 testing and evaluate flexural toughness of fiber-reinforced concrete materials.
ASTM C1550 defines a standardized test procedure for measuring FRC flexural toughness. The test evaluates energy absorption within the post-crack region by loading a round concrete panel at a central point. The specimen rests upon three symmetrically positioned pivots, delivering reliable data to quantify how fiber-reinforced concrete dissipates energy after cracking.
Our UT1023 flexural tester is offered in multiple capacity options: 300KN, 600KN, 1000KN, 2000KN and 3000KN. This versatile strength testing equipment is widely used for laboratory testing of cement, concrete and mortar cubes. UnitedTest prioritizes practical mechanical design, focusing on user-friendly operation, stable loading performance and long-term durability for civil engineering laboratories, construction material quality control and research institutions.
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ASTM C1550 Flexural Toughness Testing of Fiber Reinforced Concrete
ASTM C1550 determines the flexural toughness of fiber-reinforced concrete. Flexural toughness is the maximum stress (put) onto a specimen before it cracks or breaks. In this instance it is expressed as energy absorption in the post-crack range using a round panel supported on three symmetrically arranged pivots and subjected to a central load point.
To test in accordance to ASTM C1550, the size of your specimens should have a diameter of 800 mm . This standard requires a detailed analysis of the deflection vs. load data to ensure the accurate reporting of flexural toughness.
A servo-controlled testing machine that uses the measured deflection of either the specimen or the loading actuator to control the motion of the actuator is required to produce a controlled and constant rate of increase of deflection of the specimen without requiring the intervention of an operator.
The special fixture supporting the panel during testing includes three symmetrically arranged pivot points on a pitch circle diameter of 750 mm. The supports are capable of supporting a load of up to 100 kN (22 kip) applied vertically at the center of the specimen.
Key Features
1, High stiffness, high stability dual columns frame, with big stiffness to ensure the test accuracy.
2, Oil cylinder at topside, large stroke 200mm piston, easy and suitable for various kinds test sample. high speed, high frequency.
3, Wide effective test space 1200*1400mm, easy for sample install and uninstall.
4, Movable residual deformation measuring device, suitable for different size.
5, Various specification of test blocks, suitable for different size test sample.
6, High accuracy load cell to measure the load.
7, Overload protection, limitation switch function, Over voltage, over current, emergency stop etc.
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ASTM C1550 Standard Test Method for Flexural Toughness of Fiber Reinforced Concrete (Using Centrally Loaded Round Panel)
EN 14488-5 Testing sprayed concrete - Part 5: Determination of energy absorption capacity of fibre reinforced slab specimens
ASTM C1018 Standard Test Method for Flexural Toughness and First-Crack Strength of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading) (Withdrawn 2006)
ASTM C1609 Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading)
ASTM C1399 Standard Test Method for Obtaining Average Residual-Strength of Fiber-Reinforced Concrete
Main Technical Specification
| Test Load | 1000KN |
| Loading accuracy | ≤±1% |
| Load measuring range | 1% - 100% FS |
| Load resolution | 1/±300000F.S |
| Deformation measuring range | 350mm |
| Deformation resolution | 0.01mm |
| Loading speed | 0.02%~2%FS/S, free setting |
| Effective test space (L*W) | 900*900mm |
| Compress testing space (Height) | 350mm |
| Piston stroke | 500mm |
| Frame dimensions | 1400x1300x1700mm |
| Power | 380V, 50HZ, 3 phase, 2.2Kw. |
| Weight | 2500Kg |
Main Accessories
| Frame (1000KN) | 1 set |
| Servo control system | 1 set |
| Load cell(1000KN) | 1 set |
| ASTM C1550 flexural test fixture | 1 set |
| Displacement sensor | 1 pc |
| Computer (English Win10) | 1 set |
| Professional test software (English) | 1 set |
| Tools | 1 set |
| Backup CD etc., | 1 set |
| Documents (Manual, packing list, certificate) | |
Standard
ASTM C1550 Standard Test Method for Flexural Toughness of Fiber Reinforced Concrete (Using Centrally Loaded Round Panel)
ASTM C1550 determines the flexural toughness of fiber‑reinforced concrete (FRC) by measuring the energy absorbed in the post‑crack range of a round panel that is simply supported on three symmetrically arranged pivots and loaded by a central point load.
The test does not measure first‑crack flexural strength in the usual sense. It quantifies how much energy the material can absorb after cracking – i.e. the ability of fibers to bridge cracks and redistribute stress. Toughness is reported as the area under the load‑vs‑central‑deflection curve up to a specified deflection (5 mm, 10 mm, 20 mm, or 40 mm), expressed in joules.
EN 14488-5 Testing sprayed concrete - Part 5: Determination of energy absorption capacity of fibre reinforced slab specimens
EN 14488-5 measure the post-crack energy absorption capacity (biaxial flexural toughness) of fibre-reinforced shotcrete via a fully edge-supported square slab under central concentrated square block loading. It is the primary biaxial panel test for sprayed concrete, widely used for tunnel, mining and ground support shotcrete quality acceptance, the key post‑crack property of fibre‑reinforced sprayed concrete (FRS).
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