. known to be adjusted by the mixing of concrete, a variety of materials, the amount of mixing materials: 4.5kg cement, water 2.7kg, sand 9.9 Hai Fu and Yan Gu Feng off the auxiliary kg, gravel 18.9kg. The apparent density of the concrete mixture was measured to be 2400 kg / m3. try to calculate the amount of various materials per cubic meter of concrete. If the construction site sand moisture content of 4%, stone moisture content of 1%, seeking construction mix. If you do not mix and match, directly to the laboratory with the use of construction in the field, the actual mix of concrete how to change? What is the effect on the strength of concrete? (Using 32.5 grade slag cement). Very urgent ah to the details of the process will be able to leave the best! Thank you! The The The The The The The The The The The The The More
must be converted into the use of construction than the use of the main consideration of water content, the general method of water and sand.
(4.5 + 2.7 + 9.9 + 18.9) /2400 = 0.015m. 4.5: (2.7-9.9 * 4% -18.9 * 1%): 9.9 * (1 + 4% ): 18.9 * (1 + 1%) . the actual amount of sand and gravel is less lead to less than the number of concrete per set of concrete caused by the actual use of concrete than the design of the waste of cement
1. Cement 300 Water 180 Sand 660 Crushed stone 1 Heli and ugu Qiao Fu repair slightly 2602. Sand = 660 +660 * 4% = 686 Stone = 1260 + 1260 * 1% = 1273 Water = 180-26.4-12.6 = 141 cement = 3003. The water-cement ratio of the concrete increases and the strength decreases
. known to be adjusted by the mixing of concrete, a variety of materials, the amount of mixing materials: 4.5kg cement, water 2.7kg, sand 9.9 Hai Fu and Yan Gu Feng off the auxiliary kg, gravel 18.9kg. The apparent density of the concrete mixture was measured to be 2400 kg / m3. try to calculate the amount of various materials per cubic meter of concrete. If the construction site sand moisture content of 4%, stone moisture content of 1%, seeking construction mix. If you do not mix and match, directly to the laboratory with the use of construction in the field, the actual mix of concrete how to change? What is the effect on the strength of concrete? (Using 32.5 grade slag cement). Very urgent ah to the details of the process will be able to leave the best! Thank you! The The The The The The The The The The The The The More
