People’s daily pays attention to precast buildings: Precast technology is more and more widely used
In the comprehensive concrete laboratory of CSCEC Zhizao Huadu base in Huadu District, Guangzhou City, Guangdong Province, from the production of building materials, engineers have repeatedly studied to make materials better and more environmentally friendly.
They are insulated in summer and winter, and their energy consumption is lower.” Guoxuebing, the property manager of the park, introduced that 60000 square meters of the park’s phase I project is an “ultra-low energy consumption building”, which has applied a series of green environmental protection building materials: the application of high-efficiency thermal insulation materials such as 250mm graphite polystyrene board and “vacuum insulation board” on the external wall of the building, which has greatly improved the building’s thermal insulation effect and reduced energy consumption; Under the ground, the electric heating film system generates far-infrared heat energy through the power on and heating of polyester film, and the heat conversion rate is as high as 99.69%.
In addition, in 2020, the Ministry of housing and urban rural development and the Ministry of Finance jointly issued the notice on the pilot work of government procurement to support green building materials to promote building quality.
In the factory of CSCEC intelligent manufacturing base, the reporter saw that after the workers completed the preparation procedures such as mold installation, oiling and binding, they operated several buttons.
On both sides of the component production line, large-scale automatic advanced equipment, such as intelligent steel bar welding robot, intelligent bar bending center, CNC intelligent steel bar straightening and cutting machine, are arranged in order, running in an orderly and efficient manner.
“These buildings are like ‘thermos bottles’.
Precast buildings accounted for 30% of the new urban buildings in that year.
In recent years, China’s green buildings are growing by leaps and bounds, not only changing the way of building, but also changing people’s lives.
“We are a production base for the whole industry chain of precast buildings.
A total of 6 categories, 51 subcategories and more than 350 products have been included in the green building materials product certification directory.” Introduction by sunxingshou.
The consumption of green building materials has become a new trend.
After these building components are formed on the assembly line of the construction plant of CSCEC intelligent manufacturing base, they are transported to the community for installation – there is no obvious dust on the installation site, which is not only clean and safe, but also of good quality.
After vibrating, roughening, curing, demoulding and other procedures, a high-quality laminated floor was manufactured from the automatic flow production line.
“In 2020, the State Administration of market supervision, the Ministry of housing and urban rural development and the Ministry of industry and information technology jointly established a green building materials product certification system.
“Through reasonable planning and design, the intelligent manufacturing base has also realized three-dimensional storage and transportation..
According to statistics, compared with ordinary buildings of the same area, the project can reduce carbon emissions by more than 1000 tons per year.
Up to now, a total of 222 pilot projects have been identified in 6 pilot cities, involving 8 types of buildings such as hospitals, schools and office buildings.
In the laboratory, the ingredients of building materials have been tested repeatedly to minimize the consumption of natural resources and the impact on the ecological environment; On the assembly line, a piece of high-quality laminated floor was produced in less than a minute…
“In recent years, green building materials have become an important direction for the development and transformation of the building materials industry and one of the key industries for the development of China’s green economy.” Sunxingshou, chief economist and Deputy Secretary General of China Building Materials Federation, introduced that green building materials emphasize on reducing the consumption of natural resources and the impact on the ecological environment within the “life cycle”, and have the characteristics of “energy conservation, emission reduction, safety, convenience and recycling”.
In just a few tens of seconds, a 2-meter-by-3-meter-size laminated plate was poured.
“We have successfully developed machine-made sand concrete by continuously adjusting the mix proportion of cement, sand and gravel, admixtures and other components.
The newly-built government procurement projects in six cities, including Nanjing, Hangzhou, Shaoxing, Huzhou, Qingdao and Foshan, were taken as pilot projects, requiring the design and construction of new industrialized construction methods such as precast and intelligent buildings, Purchase green building materials that meet the performance index requirements, and build green buildings of two stars or above.
At present, the components produced have passed the acceptance.” When the reporter arrived at the laboratory for interview, seven or eight engineers were carrying out the experiment that day.
With a high degree of automation and less environmental pollution, the precast technology is more and more widely used.
Entering the Sino German Ecological Technology Town Industrial Park in Songbei District, Harbin, Heilongjiang Province, streamline and arc collide with avantgarde red wall buildings – who would have thought that in Harbin, where the lowest temperature can reach more than 30 degrees below zero, this industrial park has never been connected to the urban heating pipe network.
With regard to precast buildings, the article writes: with a high degree of automation and less environmental pollution, precast technology is more and more widely used.
With the development of China’s economy and society, the consumption of green building materials has become a new trend.
Energy saving, emission reduction, safety, convenience and recyclability.
All accessories are manufactured in the factory of the base and then transported to the project site for assembly.” Zhangjunsheng introduced that the construction method of precast buildings realized that “houses are made in factories”.
The total investment of the pilot project is about 100billion yuan, and the cumulative purchase of various types of green building materials is 5.3 billion yuan.
At the construction site of a commercial housing community in Foshan, Guangdong, there are integrated kitchens and toilets, and precast components such as beams, slabs, stairs, balconies, air-conditioning panels are placed neatly.
Zhang Junsheng, the factory director of CSCEC zhizaohuadu base, introduced that this kind of machine-made sand concrete reduced the amount of natural sand, made it more eco-friendly, and the concrete products had greater strength and shorter curing cycle, which also reduced the cost.
On June 8, the people’s Daily published the article “green buildings make cities more beautiful and livable”, which reported on green building materials, precast buildings and green transformation.
The “14th five year plan for building energy efficiency and green building development” issued by the Ministry of housing and urban rural development in March this year proposed that by 2025, new urban buildings would be fully built into green buildings, the energy-saving transformation area of existing buildings would be more than 350million square meters, and the construction of ultra-low energy consumption and near zero energy consumption buildings would be more than 50million square meters.
Since the implementation of the system, a total of 4460 evaluation certificates have been issued.