Winter cold weather is the concrete engineering quality
accident-prone season, due to low temperature in winter, the temperature
difference between day and night, concrete often appears retardation or
swelling phenomenon, affecting the normal operation of the project. Because the
cement itself is easy to solidify the characteristics of concrete mixing plant
is ready to use at any time cleaning, if you want to complete the scheduled
production unit per unit time, the cleaning equipment must be very
standardized, otherwise not only affect the production, and equipment Itself
may also cause some damage, especially in low temperature conditions, many
parts of the equipment are prone to freezing, cleaning becomes more difficult.
In order to achieve the desired production effect, to avoid the above
phenomenon.
1, the equipment temperature control
Many mixing stations to save costs, equipment and facilities is relatively simple, after
entering the winter construction, equipment can not run, not only a lot of
waste of manpower, material and financial resources, but also delay time,
supply does not affect the company's reputation.In order to ensure the normal
operation of the equipment, the normal production of concrete, the silo, the
admixture tank and the mixer should be closed and the heating point (stove and
electric heating) should be set up Heating.Conditional should adopt the boiler
heating, heating pipes should be run through the aggregate warehouse under the
material mouth, admixture shed, pool, mixer shed and operating room, not only
save time and effort, but also to better ensure that the machine out of the
concrete temperature and workperformance.Do a good job of heating the host
station heating work, check the heating insulation line, promptly remove the
fault and hidden dangers, to ensure the normal operation of the winter in the
host system.
2, the material temperature control
Storage,
distribution, antifreeze preparation work of winter materials in the
application of various raw materials and equipment of winter facilities, and
require procurement work in place in time; responsible for doing insulation
work of additive storage.Cement should be preferred Portland cement, ordinary
portland cement and early strength cement to improve the early strength of
concrete and reduce the frequency of occurrence of frost damage.Sand, stone
should give priority to the use of inventory sand, such as the winter into the
new sand, sand should be strictly required to enter the water content.Mixing
water that is drinking water, winter construction should be hot water mixing,
water temperature control at 60 ℃,
but not higher tha 80 ℃.
2, the material temperature control
Storage,
distribution, antifreeze preparation work of winter materials in the
application of various raw materials and equipment of winter facilities, and
require procurement work in place in time; responsible for doing insulation
work of additive storage.Cement should be preferred Portland cement, ordinary
portland cement and early strength cement to improve the early strength of
concrete and reduce the frequency of occurrence of frost damage.Sand, stone
should give priority to the use of inventory sand, such as the winter into the
new sand, sand should be strictly required to enter the water content.Mixing
water that is drinking water, winter construction should be hot water mixing,
water temperature control at 60 ℃,
but not higher tha 80 ℃.
3, other considerations（www.zzxfjxwm.com）
Laboratory
do a good job in the selection of winter admixture, retest and supporting the
experimental work, do a good job during winter high-grade concrete technical
reserves; antifreeze selection must be able to meet the sudden cooling and may
be the lowest temperature conditions.Strengthen the management during the
winter brush brush Taiwan, Taiwan should take measures to keep the car, the
pool of the pool in the production process to ensure that the technology
department to ensure that the water temperature requirements, and timely
cleaning brush car separated after the gravel, To prevent frost.
Concrete
mixing plant in winter construction, in the relevant operation must be based on
safety, by the professional staff related operations.In order to avoid the
concrete construction in the winter to leave hidden dangers, to ensure project
quality.
Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, Concrete mixing plant, stabilized soil mixing station, concrete batching
machine, concrete conveying equipment, please call to discuss!
