Concrete Test Hammer Concrete Test Hammer maintenance there should be one of the following routine maintenance: 1. flicking over 2000; 2. detection values ??are suspected; 3. Steel anvil rate setting failure; routine maintenance methods shall meet the following requirements: 1. Remove the hammer to make bombs after decoupling movement, then remove the fillip bar (remove the inside cushion spring) and FRL (hammer shells, shells hit extension spring and extension spring seat); 2 . with gasoline to clean the movement of the components, especially the central guide rod, playing the hammer and the fillip bar of the hole and the impact surface. After washing in the center of the guide rod coated with a thin layer of oil or sewing machine oil clocks, Henan test equipment, other parts shall be oiled; 3. Clean the casing wall, remove the scales, Henan test equipment standard curing box, Check pointer friction should be between 0.5-0.8N; 4. shall rotating end cap positioned fastening screws zero; 5. Do not make or replacement parts; 6. After maintenance should be required to carry out calibration test, Calibration value should be 80 ± 2. Concrete testing equipment designated below 200 or 20: the concrete design label according to group aggregate standard requirements by a factor of 1.50 or a 1 cK28 20P called a Select the appropriate cement to mark greater than or equal to twice the RCW28 of. Together known label requirements on water dragon away and is known as a good-quality aggregate and be tested bundle of coarse aggregate by 2 to 1 ratio of two kinds of gray water C cut B) mixing concrete, concrete electronic test equipment Henan than the long instrument, each with concrete by the same consistency (artificial pound of real-time with -7 cm, Henan Concrete magnetic shaking table test instrument, vibrating device pound real time with 2-3 cm), each made of 20X20X20 cm cubic specimens three (also with a maximum particle size of coarse aggregate according to permitted specimen size). After the test piece molded by standard curing method has been 28 days, respectively, as anti-bar strength test, the average intensity of each group obtained an attachment. About drawing strength concrete and direct relationship between the gray water ratio of money and draw money direct relationship with the amount of cement per cubic meter of concrete gray water ratio requirements based on concrete strength than gray water and gray water than the relationship, according to the gray water determined the amount of cement per cubic meter than concrete. If the cement is not more than 280 kg / cubic meter, this one set of intensity of aggregates can be considered qualified. Henan test equipment | road equipment | Henan concrete bond strength test equipment supplied by Henan Xin Yi Jia Equipment Co., Ltd. Henan test equipment | road equipment | Henan concrete bond strength test equipment Henan Xin Yi Jia Equipment Co., Ltd. (www.hnxinyijia.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Liu.