Concrete pouring
Release time:
2020-07-07
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 Cement Implementation GB175-1999 Standard Strength Guarantee Value
| Product Species |
Strength Grade |
Compressive Strength Mpa |
flexural strength Mpa |
||
| 3d |
28d |
3d |
28d |
||
| silicate cement |
42.5R |
25.0 |
48.0 |
4.5 |
7.5 |
| 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
Spike Cable Enters South American Market
Recently, a batch of 2100-pair communication cables produced by Peak Cable Company for Venezuelan customers have been completed and will be shipped in cabinets. This is the company's first export business in the South American market. In recent years, under the general trend of "light in and copper out" in the domestic market, Jianfeng Cable Company has taken the initiative to open up foreign markets that still use copper-core communication cables. While making use of its own production advantages to actively cooperate with domestic industry and trade enterprises to carry out foreign trade processing of communication cables, it has made great efforts to expand its own export business through foreign trade platforms and participation in exhibitions. Since the beginning of this year, the cable company has overcome the adverse effects of the new coronary pneumonia epidemic, actively looking for foreign customers for business negotiations, and won orders from Vietnamese customers shortly after the resumption of work. It is understood that in all the export business of cable companies this year, self-operated export business has accounted for about half, and the export direction is mainly Southeast Asia. The successful completion of the Venezuelan customer orders for the future further development of Colombia, Argentina, Peru, Chile and other South American countries to lay a good foundation. (Hu Longgang, Huang Yuan)
2020
11-12
Daye peak "war epidemic" work was commended by Hubei Province, Huangshi City
Recently, Daye Peak Cement Company won the commendation of Hubei Provincial Federation of Industry and Commerce, Hubei General Chamber of Commerce, Huangshi City Federation of Industry and Commerce, Huangshi City Chamber of Commerce, Huangshi City People's Government Poverty Alleviation and Development Office and other relevant units for its outstanding achievements in the prevention and control of the new coronary pneumonia epidemic. Since the beginning of this year, in the face of the new coronary pneumonia epidemic, Daye Peak has fully implemented the important instructions of the municipal government on the prevention and control of the new coronary pneumonia epidemic and the decision-making and deployment of poverty alleviation, obeying the overall situation, not only donating money to the Daye Municipal People's Government for the first time to help prevent and control the epidemic, but also actively do a good job in the prevention and control of the internal epidemic, and to resume production, and earnestly implement the municipal party committee and municipal government on the response to the impact of the new coronary pneumonia epidemic to carry out "two help two help" and "three get one stable" work requirements, paired to help the surrounding rural part of the population has not been lifted out of poverty, to help poor areas to solve the problem of agricultural and sideline products sales, for the city's decisive fight against poverty to contribute. (Yang Huiping, Zhang Qingyu)
2020
11-12
Liu Haiping, Vice Mayor of Pu'er, went to Yunnan Jianfeng for investigation
On the morning of November 3, Liu Haiping, member of the standing Committee of the Pu'er Municipal CPC Committee and vice mayor of the municipal government, and responsible persons of relevant departments went to Yunnan Jianfeng cement Company for investigation and discussion with Zhou Jiping, general manager of Yunnan Jianfeng, and Fang Xuhua, deputy general manager, on such topics as improving the business environment of Pu'er City and the difficulties encountered in the production and operation of enterprises. During the exchange, Zhou Jiping reported on the production and operation of the company this year, as well as the impact of the new coronary pneumonia epidemic on the market and the difficulties encountered in the production and operation process. Liu Haiping fully affirmed the efforts and achievements made since the resumption of work and production in Yunnan Peak, and said that a good business environment is very important for economic development and enhancing the vitality of enterprises. The functional departments of Pu'er government at all levels will continue to optimize various tasks, improve work efficiency, and provide services and guarantees for the development of enterprises. Liu Haiping hopes that Yunnan Jianfeng, as a key enterprise and "benchmark enterprise" in Pu'er City, will play a pioneering and exemplary role and jointly promote the construction of the business environment in Pu'er City. (qi jianmei)
2020
11-12
On the afternoon of November 10, the Party committee of the group company held an enlarged meeting to learn the spirit of the Fifth Plenary Session of the 19th CPC Central Committee and make arrangements for the next step of study, publicity and implementation. At the meeting, Jiang Xiaomeng, Secretary of the Party committee and chairman of the group company, together with all members of the Party committee, members of the management team of the group company, heads of functional departments and some party members, studied the communique of the Fifth Plenary Session of the 19th CPC Central Committee and interpreted the spiritual points of the plenary session. Jiang Xiaomeng pointed out that the Fifth Plenary Session of the 19th Central Committee of the Communist Party of China, held in Beijing from October 26 to 29, is a very important meeting held at an important historical moment when the victory of building a moderately prosperous society in an all-round way is in sight and the new journey of building a modern socialist country in an all-round way is about to begin. It fully embodies the foresight of the Party Central Committee with Comrade Xi Jinping as the core in planning the future and the historical responsibility of carrying forward the past, and profoundly points out the guidelines, objectives, tasks, and strategic measures for China's development in the coming period. It is of great and far-reaching significance to mobilize and encourage the whole Party and the people of the whole country to continue to seize the important strategic opportunity period and promote the comprehensive construction of a socialist modern country. In response to the goals and some hot issues raised in the plenary communiqué, such as how to achieve the 2035 long-term goal, the key goals of economic and social development during the "14th Five-Year Plan" period, why the emphasis is on adhering to the party's overall leadership and strengthening the centralized and unified leadership of the party Central Committee. The main risks and challenges facing economic development in the next five years, how to achieve scientific and technological self-reliance, promote innovation, how to understand the construction, jiang Xiaomeng quoted the answers given by the leaders of relevant central ministries and commissions at the press conference of the plenary session. Jiang Xiaomeng emphasized that China's current development environment is facing profound and complex changes, and there are new developments and changes in opportunities and challenges. The guiding ideology and principles of economic and social development during the "14th Five-Year Plan" period proposed by the plenary session, and the economy during the "14th Five-Year Plan" period The main goals of social development will have a direct impact on the future development of our enterprises. Party organizations at all levels and all employees at the peak must study and study carefully, find the entry point and direction of work, make every effort to complete the annual work goals, and make preparations for the next year. The person in charge of the party organization of the company's overseas enterprises participated in the study through the video conference system. (this newspaper reporter)
2020
11-12
Zhou Zhou, executive vice governor of Qiandongnan Prefecture, sent a message to Huang Ping Jianfeng: fully promote the normalization of production and marketing to make new contributions to Huang Ping's overall well-off society. On October 27, Zhou Zhou, executive vice governor of Qiandongnan Prefecture, Guizhou Province, Yang Zhi, head of Huangping County, and relevant officials of the state and county governments went to Guizhou Huangping Jianfeng Cement Company to investigate and understand the project construction and production situation, and hope that the enterprises will develop as soon and promote regional economic development. Hu Hongwei, general manager of Huang Ping Jianfeng, and other members of the management team made a report on the overall work since the construction of the project started, and accompanied Zhou Zhou Zhou and his party to visit the production line site. In the central control room, Hu Hongwei to Zhou Zhou
2020
11-03
Zhang Xinyu, Vice Mayor of Jinhua City, hopes that Jianfeng Pharmaceutical will aim at cutting-edge science and technology to speed up the development of enterprises. On the afternoon of October 16, Zhang Xinyu, Vice Mayor of Jinhua City, and his party went to the construction site of Jianfeng Pharmaceutical's internationalization project of producing 2 billion pieces of solid preparations annually to conduct research. Accompanied by Huang Jinlong, deputy general manager of the group company and general manager of the pharmaceutical company, and Shen Quan, deputy general manager of the pharmaceutical company, Zhang Xinyu and his entourage visited the preparation workshop under construction and affirmed the civilized construction and safety management of the site. Huang Jinlong introduced the basic situation of the project to Zhang Xinyu and his party. Knowing that Jianfeng Pharmaceutical has introduced world-class production equipment and advanced technology to build a high-end preparation manufacturing platform in order to achieve industrial upgrading, Zhang Xinyu expressed his appreciation and encouraged Jianfeng Pharmaceutical to gain a foothold in China, aim at the world's cutting-edge technology, and accelerate the pace of enterprise development. Continuously enhance the overall competitiveness of the enterprise. (Wang xuesheng/Wen Zhou hengbin/photo)
2020
11-03