H-30105.XX
实验室烤箱:强制空气
Quality fan-forced circulation ovens feature double-wall construction 和 heavy, 焊接钢表面.
H-30105E.XX
实验室烤箱:强制空气 数字
数字 microprocessor control ovens meet the needs of industry, research organizations 和 schools.
H-30100.XX
实验室烤箱: Gravity Convection
Quality gravity-convection ovens feature double-wall construction 和 heavy, 焊接钢表面
H-30100E.XX
实验室烤箱: Gravity Convection 数字
The digital control combines the features of the analog model but offers the stability of a full PID microprocessor.
H-30140.XX
Bench Oven with Dial Temperature Control
烤箱 feature fan-forced-air circulation 和 adjustable dial temperature control
H-30140E.XX
台式烤箱,数字控制
Precise PID microprocessor temperature controller holds temps within 1°
H-30322.XX
High-Performance, Bench-Top 烤箱
Forced-air convection oven uses microprocessor-based control system
H-30356.XX
强制空气,对流烤箱
Heavy-duty, ideally suited for soil 和 asphalt testing applications
H-32300A.XX
大容量台式烤箱
H和le a wide variety of applications 和 feature an analog thermocouple-actuated, 温度控制器
实验室烤箱
The cement cube test is used to determine the compressive strength of 液压水泥 和 other mortars. This quality is very important for almost all cement 和 mortar applications, especially when relating to infrastructure. Because compressive strength plays such a large role in cement mortar functionality 和 success, many different tests are used to analyze this characteristic. The test results can then be used to determine compliance with specifications, such as ASTM C109 和 ASTM C780. These 和 similar ASTM test methods emphasize the importance of using care in closely observing the testing procedures used to verify requirements.
Masonry mortars composition can include the following cementitious materials: Portl和 cement, 液压水泥, 砌筑水泥, 矿渣水泥, 生石灰, 水合石灰和石灰腻子. 总s may consist of natural or manufactured s和. Admixtures may also include accelerators, 防水性化合物, 色素沉着, retarding 和 air entrainment solutions.
Cube testing is one of the most simple 和 common ways to determine the compressive strength of cement 和 mortar mixes. 要执行此测试, the mixes are poured into cube molds 和 tempered for 24 hours to ensure no voids are present. Once prepped, the surfaces are smoothed with cement paste. One to three weeks after curing, specimens are placed in compression testing machines where a load is gradually applied until the mix fails. To ultimately calculate the resulting compressive strength, the load at the failure is divided by the area of the specimen.
Masonry structures are constructed to be load bearing, including walls, columns 和 foundations. Determination of the compressive strength is critical in ensuring the structure can support a given load.
洪堡 offers a variety of cube molds for testing, which are constructed of brass, 不锈钢和塑料. All are 3-gang molds 和 can be purchased in diagonal 和 parallel configurations. Some models f或使用 with expansive grouts feature a detachable base 和 top plate for ease of use. A briquette mold for 液压水泥 mortar tensile strength tests is also available.
同样可用的还有 夯棒 for tamping material into the cube molds, as well as 摩擦块 和 卡尺 for smoothing 和 recording sizes of cubes before compression testing. 我们携带 2-inch cement cube pad retainer caps 和 压缩垫 for securing cubes during compression testing.
If you have questions or need help selecting equipment, please call us at 1.800.544.7220或使用我们的 问洪堡 form.