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Concrete pouring

Release time:

2020-07-31

concrete pouring should comply with the corresponding construction specifications, special attention should be paid to:
1, concrete in the construction of water-absorbing objects involved in the corresponding treatment before pouring, in order to avoid concrete moisture absorption, affecting the quality of concrete.
2, concrete should be poured before the initial setting, and there can be no segregation phenomenon, if there is segregation phenomenon, should be re-mixing, before pouring, and pouring process should also avoid segregation phenomenon.
3. When pouring structures such as columns, a layer of 50-100mm cement mortar (the mix ratio is the same as that in concrete) shall be poured at the bottom to avoid honeycomb pitting.
4, concrete pouring, should be carried out in layers according to the structural requirements, with pouring and tamping.
5. The overall concrete pouring of general structures shall be carried out continuously as much as possible to avoid intermittent construction. In the initial stage after concrete pouring, the concrete shall be protected from vibration or impact.
7. When making cement floor, roof platform and other parts, attention should be paid to the plastering operation. Generally, it should be plastered many times until there is no bleeding on the surface, but dry powder should not be sprinkled and cured in time during the plastering process.
8. In order to prevent early cracks in road construction, attention should be paid to:
①. Under the condition of meeting the design grade of concrete, accurate measurement should be made, excessive cement should not be used, and the unit water consumption of concrete should be mastered to reduce the shrinkage of concrete.
②, do not use high-temperature cement, the cement temperature during site construction should be lower than 70 ℃. In summer construction, the pouring temperature of concrete should be reduced as much as possible, the operation time from the beginning of pouring to the completion of surface finishing should be shortened, and the concrete should be fully cured. Regardless of the circumstances and conditions, the temperature of the concrete mixture shall not exceed 35 ℃. During winter construction, the mixing time should be extended, and the discharge temperature should not be lower than 10 ℃. At the same time, after the construction of pavement concrete, the first three days of maintenance temperature should be maintained above 10 ℃, the next 7 days of maintenance temperature should be maintained above 5 ℃.
③. When using dry aggregate exposed to sunlight for a long time, water shall be fully sprinkled to cool down.
④, the top surface of the base should be fully wet before pouring concrete, or take waterproof measures.
⑤, concrete surface finishing process, to avoid direct sunlight, do not make the temperature rise and dry.
⑥. According to the strength development, master the appropriate time for plate cutting to prevent the concrete slab from breaking.

"Peak Brand" Cement Strength Guarantee Value

Peak Cement Implementation GB175-1999 Standard Strength Guarantee Value

Product	Strength Grade	Compressive Strength Mpa		Compressive Strength Mpa
Product	Strength Grade	3d	28d	3d	28d
silicate cement	42.5R	25.0	48.0	4.5	7.5
silicate cement	52.5	27.0	56.0	4.5	8.0
Ordinary Silicate Cement	32.5R	18.0	40.0	4.0	6.5
	42.5	20.0	48.0	4.0	7.5
	42.5R	23.0	48.	4.5	7.5
	52.5	26.0	56.0	4.5	8.0
Composite Cement	32.5R	18.0	40.0	4.0	6.5

More information

Peak's "Centennial" Ideal

Editor's note: During the National Day, the "Jinhua New Observation" column of Jinhua TV Station launched a series of reports on "National Day New Observation: New Development of Old Enterprises" to understand the new developments of those old enterprises that have grown up with New China in the new era. October 3 broadcast of the "peak of the 'centennial 'ideal", about the development of the peak group and the future direction of development. The "century" ideal of the peak Jinhua TV reporter Wang Dujuan Jiang Qian host: speaking of Zhejiang Jianfeng Group Co., Ltd., Jinhua people are no stranger. The older generation of Jinhua people are more familiar with, may be the predecessor of Jianfeng Group-Jinhua Cement Factory. Open the first old photo 58 years ago, surrounded by mountains and a rice field in the middle. Old Jinhua can see at a glance that this is the Wise Temple, 8 kilometers north of Jinhua City and east of the former Zhuangtou of Luodian Town. In August 1958, the first group of pioneers came here and built Jinhua's first cement factory on a desolate hillside of 16.94 mu with a pair of hands and warm blood. From the earliest cattle-drawn ball forming machine to the electric ball forming machine, from pure manual labor to machine substitution, it took 26 years of hard work. By 1983, the annual output of peak cement reached 120000 tons, the output value was 6.75 million yuan, and the profit was 2.4 million yuan. In these 26 years, the cement plant has experienced a difficult period of the country, and the ten-year catastrophe of the "Cultural Revolution" has finally ushered in a good time of reform and opening up with tenacious vitality, laying the foundation for steady development in the future. Looking at these old pictures,

2020

07-31

Peak Cement Successfully Enters Lancang Airport Project

News from our newspaper On September 26, the first batch of airport runway cement produced by Yunnan Jianfeng Cement Company was successfully delivered to the Lancang Airport site, which marked another important step in the expansion of Jianfeng Cement in the southwest Yunnan market. Lancang Airport is located in Donghi Town, Lancang Lahu Autonomous County, Pu'er City. It is the center of the "three counties" and "Pu'er Green Triangle" tourist areas of Lancang, Menglian and Ximeng, with a wide range of radiation and obvious location advantages. The project is a national "Twelfth Five-Year Plan" construction project and a key construction project in Yunnan Province. It was approved by the State Council and the Central Military Commission in January 2013. It started construction at the end of November 2014 and is expected to be completed in April 2017. The current project of Lancang Airport is designed to meet the target of 250000 passenger throughput and 750 tons of cargo throughput by 2020, including the construction of a 2600-meter-long and 45-meter-wide runway, the construction of a new 3000-square-meter terminal building and 4 apron parking spaces, including communication, navigation, lighting, meteorology and other supporting projects. The total investment of the project is 1.533 billion yuan. Upon completion, it can be used for Boeing 737 series, Airbus A319 and A320 series, MA-60 and other passenger aircraft take off and land. Since the start of the Lancang Airport project, Yunnan Peak has listed it as an important goal to strive. Compared with ordinary cement, special cement for airport runways has the characteristics of small shrinkage, strong wear resistance, good frost resistance and low alkali content in addition to the requirements of ordinary 42.5 Portland cement. To this end, Yunnan peak in the project to strive for at the same time, the collection of technical forces to tackle the problem, in the clinker composition to determine, cooked.

2020

07-31

Jianfeng won the Zhejiang Industrial Award

A few days ago, we learned from the relevant departments of Zhejiang Province that the company won the 2016 "Zhejiang Industrial Award Silver Award". Zhejiang Industrial Award was established in 2014 and is selected every two years. The purpose of carrying out the selection and commendation of the Zhejiang Industrial Awards is to thoroughly implement the "August 8 Strategy", comprehensively implement the innovation-driven development strategy, speed up the industrial transformation and upgrading with the "four for three" as the starting point, and commend the adherence to the scientific concept of development. adhere to industry, conscientiously fulfill social responsibilities, establish a modern enterprise system, and take a new road of industrialization with characteristics. The evaluation work is jointly organized and implemented by Zhejiang Industrial Economic Federation, Enterprise Federation, Entrepreneur Association, relevant provincial industry associations, municipal industrial economic federations, enterprise federations, entrepreneur associations, and relevant units. The award review committee is composed of relevant government departments, provincial "three committees", relevant provincial industry associations, and experts in industrial economy, management, finance, taxation, quality, environmental protection, safety, technology, and law, the participating enterprises are comprehensively evaluated from the aspects of industry demonstration role, scientific and technological innovation, economic benefits, resource utilization, environmental protection, brand strategy, product quality, production safety, social responsibility, enterprise management, human resources and so on. "The enterprises that have won the Zhejiang Industrial Award this time are all outstanding enterprises that have made significant contributions to the promotion of Zhejiang's economic development; they are all leading enterprises, backbone enterprises, and high-growth enterprises from different industries, representing the scale of Zhejiang's industrial development. The direction and leading spirit represent the highest level of Zhejiang's industrial development." According to the organizers related negative

2020

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Peak Cement Successfully Enters Lancang Airport Project

2020

07-31

Peak Cement Successfully Enters Lancang Airport Project

2020

07-30

Peak two enterprises were commended

On September 23, the launching ceremony of the 2016 Jinhua Zhejiang Shopping Festival and the 2015 Jinhua Honest Enterprise Commendation Conference were held in the urban people's square. Jianfeng Group's Jinhua Jianfeng Pharmacy Chain Co., Ltd. and Zhejiang Jianfeng International Trade Co., Ltd. were commended.

2020

07-31

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