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The output obtained from a site mix concrete plant using a 8/12 mixer is 4 to 5 metric cubes per hour which is 30-60 metric cubes per hour in a ready mix concrete plant. Better handling and proper mixing practice will help reduce the consumption of cement by 10 – 12%.
The concrete or mortar is formulated to be sticky and resist flowing when at rest to allow use on walls and ceilings, but exhibit sufficient shear thinning to be easily plumbable through hoses. Shotcrete is usually an all-inclusive term for both the wet-mix and dry-mix versions invented by Akeley.
The range of a mortar is controlled by the number of propellant charges attached to the tail of the mortar designated M223. A charge is a semi-circular donut of nitrocellulose, which resembles a "horseshoe". [17] [18] A round for the M252 mortar comes with four charges attached. Longer-range shots require more propellant than can fit in the ...
A 1.5-inch slab of gypsum concrete weighs 13 pounds per square foot versus 18 pounds per square foot for regular concrete. [10] Even though gypsum concrete weighs less, it still has the same compressive strength as regular concrete, based on its application as underlayment or top coat flooring. [ 11 ]
[1] According to the output size, it can be divided into simple dry mortar production line and automatic dry mortar plant. The output of simple line is generally 1-8t per hour, and the output of automatic line is generally more than 15t per hour. The solution can be customized according to the customer's site and budget. [2]
For every mass (kilogram, pound, or any unit of weight) of cement (c), about 0.35 mass of water (w) is needed to fully complete the hydration reactions. [ 1 ] However, a fresh concrete with a w/c ratio of 0.35 may not mix thoroughly, and may not flow well enough to be correctly placed and to fill all the voids in the forms, especially in the ...
The Nerpa round weighs 230 kg (510 lb), while the warhead itself weighs 112 kg (247 lb), have a range of 7.1–19.3 km (4.4–12.0 mi). [d] Each round releases 14 submunitions. [9] The 2S4 Tyulpan can also fire the 3F5 Smel'chak ("Daredevil") laser-guided mortar round. Developed in the 1980s and successfully tested in Afghanistan, where it was ...
It utilizes a hydraulic recoil system. [1] The recoil length is 170 mm (6.7 in), maximum recoil thrust is 2,800 kg (6,200 lb), and the weight of the recoiling mass is 75 kg (165 lb). [2] The LR gun-mortar has a total length of 1.8 m (5 ft 11 in). [2] Different variants were produced with electrical or mechanical firing mechanisms. [2]