Information on the most widely used ASTM standards within the materials testing industry
Model: UT4130-CT60; ISO 679, EN 196-1
According to the ISO 679 cement strength testing method, the molded cement specimens are cured in water, meeting the ISO 679, GB/T 17671-2021 requirements. The water temperature should be 20°C ± 1°C, and the specimens must be cured in still water. To meet this special requirement, our company's researchers developed a constant temperature water curing tank for cement, designed for use in national research laboratories and other organizations that require it.
Standard: ISO 679:2009 Cement - Test methods - Determination of strength
EN 196-1:1995 Methods of testing cement-Determination of strength
General introduction
According to the national cement strength testing method (ISO method), the molded cement specimens are cured in water, meeting the ISO 679, GB/T 17671-2021 requirements. The water temperature should be 20°C ± 1°C, and the specimens must be cured in still water. To meet this special requirement, our company's researchers developed a constant temperature water curing tank for cement, designed for use in national research laboratories and other organizations that require it.
Standard: ISO 679:2009 Cement - Test methods - Determination of strength
EN 196-1:1995 Methods of testing cement-Determination of strength
Key Features
Digital temperature display and automatic control. The interior is made of stainless steel, welded into shape, and the exterior is electrostatically sprayed. It uses a compression refrigeration system for cooling, heating pipes for heating, and a fan for automatic circulation to make the internal temperature more uniform.
When the temperature in the box is above 20°C ± 1°C, the compressor automatically cools it down. When the water temperature drops below 20°C ± 1°C, the heater starts heating, and the fan circulates the water automatically to maintain a consistent water temperature. This cycle continues, keeping the water temperature between 20°C ± 1°C at all times.
Open the box door, place the specimen water tray, and add water until it completely covers the cement blocks.
Plug in the power supply, check for any electrical leaks, adjust the temperature controller, and set the upper limit to 20.8°C and the lower limit to 19.5°C.
Main Technical Specification
| Temperature controller accuracy | ±1℃ |
| Power supply | 220V ±10%, 50HZ |
| Compressor power | 240w |
| Heater power | 2000W |
| Draw box size | 180×320×75(mm) |
| Draw box quantity | 60 units |
| Dimensions | 1100×800×1850 mm |
| Weight | 200 kg |
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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