Information on the most widely used ASTM standards within the materials testing industry
Model: YDW-300, ISO 679, ASTM C109
YDW-300 Electronic compression testing machine mainly used for compressive strength tests of cement mortar and concrete blocks, it can also be used for compressive tests of rubber pads, tiles, metal products, components, and other materials. This model is our latest research and development for scientific research institutes, industrial and mining enterprises to use a new generation of testing instruments, with simple structure, low noise, high precision advantages, direct use of high-precision spoke load sensor force measurement, servo motor drive system loading, so that the whole machine to achieve higher precision. The whole machine has compact structure, easy maintenance, beautiful appearance, high precision and full functions, and is an ideal test instrument for scientific research institutes and cement and rubber sand production units.
General Introduction
YDW-300 Electronic compression testing machine mainly used for
compressive strength tests of cement mortar and concrete blocks, it can
also be used for compressive tests of rubber pads, tiles, metal
products, components, and other materials. This model is our latest
research and development for scientific research institutes, industrial
and mining enterprises to use a new generation of testing instruments,
with simple structure, low noise, high precision advantages, direct use
of high-precision spoke load sensor force measurement, servo motor drive
system loading, so that the whole machine to achieve higher precision.
The whole machine has compact structure, easy maintenance, beautiful
appearance, high precision and full functions, and is an ideal test
instrument for scientific research institutes and cement and rubber sand
production units.
Key Features
a) The use of advanced AC servo motor speed regulation drive system, speed regulation ratio of 1:10000, according to the needs of the acceleration speed of 0.05-100mm/ min to achieve any pressure plate rise speed;
b) Full mechanical structure, from servo motor to servo reducer, the use of fully sealed structure, no need to replace the lubricating oil during use, there is no pressure oil leakage and proportional valve blockage;
c) The main engine is designed in accordance with ergonomic standards, making the operation simple, convenient and fast. Measurement control with high precision and intelligence;
d) Give full play to the advantages of the microcomputer, reduce the electronic control system hardware, and integrate all electrical parts into two modules, which greatly improves the reliability of the product;
e) Exceeding a certain range of the maximum test force (overloading 2-5% of the gear), or when the piston hits the limit, it can be stopped immediately;
f) Each measurement data can be stored permanently for later observation;
The test force and displacement measurement control are concentrated on the test interface of the microcomputer, which is intuitive and easy to operate.
The main engine of the pressure testing machine is a gantry frame composed of two columns, upper beams, a base plate and a table. The transmission mechanism is composed of AC servo motor, belt, reducer and precision screw to realize the up and down movement of the mechanical piston, so as to realize the movement of the specimen pressure plate. Complete the compression experiment. Its compact structure and smooth transmission. The mechanism ensures that the frame has sufficient stiffness while being smooth and efficient. In the process of testing, the load sensor on the upper beam determines the size of the test force, the microcomputer software controls, the compression test is automatically completed, and the data is collected and printed.
ASTM C39 "Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens“
ISO 679:2009 "Cement -- Test methods -- Determination of strength"
ISO 679 specifies a method of determining the compressive and, optionally, the flexural strength of cement mortar containing one part by mass of cement, three parts by mass of ISO standard sand and one half part of water.
GB/T 17671, GB/T 50081, GB/T2611, GB/T16826 etc.,
Main Technical Specification
| Max. load | 300KN |
| Measuring range | 1%-100%FS |
| Accuracy | ±0.5% |
| Load speed | 0.01-50mm/min |
| Power supply | 220V±10% |
| Power | 1.5 kW |
| Test space | 200mm |
| Compression platen diameter | 150mm |
| Dimensions | 650×560×1500 |
| Weight | 300kg |
Main Accessories
Loadframe,
oil pressure sensor,
digital meter,
compression platen,
English operation manual
Standard
ISO 679 determining the compressive strength (and optionally flexural strength) of cement, using a standardized mortar mix rather than testing pure cement paste or concrete. It is the benchmark that allows different cements from different plants and countries to be compared on a level playing field.
ASTM C109 is the fundamental test method for determining the compressive strength of hydraulic cement using 2-inch (50-mm) mortar cubes. It specifies a standardized procedure to prepare, cure, and test 50-mm (2-in.) cube mortar specimens for compressive strength. The mortar mix ratio is 1 part cement to 2.75 parts standard sand (by mass). For Portland/air-entraining Portland/Portland-limestone cements, water content is fixed; for other cements, water is adjusted to achieve a flow of 110±5 (per 25 drops on a flow table, ASTM C230). Specimens are compacted in two layers by tamping, cured, and loaded in compression until failure to calculate strength as peak load divided by cross-sectional area.
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