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
News from our newspaper The recently published national periodical "Building Materials Development Orientation" uses the corporate image photo of Yunnan Jianfeng Cement Company on the cover; the "13th China Yunnan Pu'er Tea International Expo and Fair" held on August 26-28 During the period, the local mainstream media "Pu'er Daily" also used a large amount of space to publicize the achievements of Yunnan Jianfeng in many aspects. Since it was put into production, the company has strengthened its image publicity through various channels, and the social influence of the company has been continuously improved. As a relatively late cement enterprise in southwest Yunnan, Yunnan Jianfeng has always attached great importance to the construction of corporate culture and image promotion. "Building Materials Development Orientation" magazine is sponsored by the China Building Materials Industry Economic Research Association and other units. It is the only comprehensive scientific and technological journal of building materials in the country. It takes technological innovation, management innovation, and market innovation as its purpose, and takes the national, orientation, and novelty as its goal. It has a relatively wide influence on the high-level managers and engineering and technical personnel of the building materials industry and enterprises. China Yunnan Pu'er Tea International Expo is an international exhibition co-sponsored by the Ministry of Agriculture and the People's Government of Yunnan Province. During this period, seizing the opportunity to promote enterprises is conducive to breaking through geographical limitations and gaining a wider impact. In the daily publicity work, Yunnan Jianfeng also cooperated with Pu'er TV station to broadcast the corporate image propaganda film in prime time after the news broadcast, and used self-media such as "Pu'er on the Cloud" to promote the spirit of Jianfeng enterprise. Every year during the Spring Festival, the company will expand its reputation through Xishuangbanna TV Station and Pu'er TV Station in the form of New Year greetings. With Yunling High-speed Media, Today's Biography
2020
07-30
The international business standard for apple extract, which was presided over by Tianjin Jianfeng Natural Products Company as the team leader, was finally revised a few days ago and officially released and implemented on July 1. Plant extracts are widely used in food, medicine and chemical industry, and are the main force in the export of traditional Chinese medicine products in China. In recent years, as the United States and other countries have become more and more stringent in the import supervision of plant extracts, my country's plant extract products have ended the rapid growth of exports for many years and entered a period of adjustment. The entire industry urgently needs to improve the quality level and establish and improve industry standards. Otherwise, in the international market generally improve the quality of food and drug regulatory standards of the environment, China's plant extract industry standards are not perfect, compatibility with international standards is not strong, resulting in exports are easily affected. Faced with the dual pressure of strengthening international supervision and weak exports, since 2012, the China Medical Insurance Chamber of Commerce has organized domestic outstanding plant extract companies to jointly develop the "International Business Standards for Plant Extracts. Since the first batch of international business standards for plant extracts were formulated and released in 2013, it has played a good role in promoting the development of the entire extract industry. The formulation and launch of plant extract standards conform to the trend of formulating competitive group standards proposed by the National Standards Committee, and fill the gaps in national standards and industry standards. It is not only conducive to plant extract companies to open up domestic and foreign markets, but also create a good The industry environment plays a huge role. At present, business standards have become one of the considerations for relevant international customers to measure product quality, and even become a reference for inspection and quarantine at some ports.
2020
07-31
The first payment of peak 2013 corporate bonds is completed.
On June 5, Jianfeng Group's payment of principal and interest of corporate bonds (Phase I) in 2013 was successfully completed. On June 5, 2013, with the approval of the China Securities Regulatory Commission, Jianfeng Group's 2013 corporate bonds (Phase I) were publicly issued with an issue amount of RMB 0.3 billion. The issue of corporate bonds is a 5-year fixed-rate bond with a coupon rate increase option and an investor resale option at the end of the third year, with a debt rating of AA + (up to AAA). The coupon rate of the bonds was determined by market bidding and was finally determined at 4.90 per cent, which was 1.55 percentage points lower than the benchmark interest rate of the five-year bank loan at the time, fully reflecting the capital market's affirmation of Jianfeng Group. After the issuance of Jianfeng Group's 2013 corporate bonds (the first phase), it was listed and traded on the Shanghai Stock Exchange on July 2 of that year. As some investors chose to sell back at the end of the third year, the company paid the resale on June 6, 2016, and the bond balance was reduced to 0.277 billion yuan. The total amount of principal and interest to be paid by the time the bonds mature is $0.29 billion (including tax). In order to do a good job in the repayment of principal and interest on the bonds, the group company issued an announcement on May 25 to register the relevant rights and interests, and entrusted the Shanghai branch of China Securities Regulatory Commission to pay and exchange interest on the bonds. On June 5, the maturity date of the bonds, the payment of principal and interest was successfully completed. Corporate bonds are securities issued by companies in the stock exchange market in accordance with legal procedures and agreed to repay the principal and interest within a certain period of time, and the issuance of corporate bonds is one of the main ways of direct financing.
2020
07-31
Natural products companies through Europe and the United States two organic certification
On April 30, Tianjin Jianfeng Natural Products Company's apple and ginseng series extract products obtained EU organic certification (EC) and US organic certification (NOP) certificates respectively. EU Organic Certification (EC) is the European inspection and certification body for organic products, with the qualification of identifying whether organic products meet the standards of Europe, Japan and the United States. The EC certificate mark is one of the most authoritative organic certification certificates in the world today. It is trusted by consumers and the organic industry. It has great credibility in the international market and is the guarantee for Chinese organic products to enter almost all organic markets in the world. American Organic Certification (NOP) is the most authoritative organic certification in the United States. Any manufacturer and distributor who intends to sell organic products in the United States market must pass the certification of American organic NOP, and the certification of NOP is signed by the American Bureau of Agriculture. Qualified, organic ingredient suppliers must also be certified by NOP. In the European and American markets, products with EC and NOP certification marks mean that they have the guarantee of high quality and high credibility. They are safe and assured organic products, and they are easier to gain the trust of consumers. Since its establishment, the natural products company has been facing the international market, and with the improvement of domestic and foreign consumers' demand and standards for organic products, it has continuously strengthened quality management, continuously introduced new organic products, and won the trust of consumers. Prior to this, natural products company's plant extracts, plant pigment products have entered the European and American markets, won the trust of many customers, the apple, ginseng two series of products obtained the European Union and the United States organic certification, to the peak of natural products.
2020
07-30
Natural products companies through Europe and the United States two organic certification
On April 30, Tianjin Jianfeng Natural Products Company's apple and ginseng series extract products obtained EU organic certification (EC) and US organic certification (NOP) certificates respectively. EU Organic Certification (EC) is the European inspection and certification body for organic products, with the qualification of identifying whether organic products meet the standards of Europe, Japan and the United States. The EC certificate mark is one of the most authoritative organic certification certificates in the world today. It is trusted by consumers and the organic industry. It has great credibility in the international market and is the guarantee for Chinese organic products to enter almost all organic markets in the world. American Organic Certification (NOP) is the most authoritative organic certification in the United States. Any manufacturer and distributor who intends to sell organic products in the United States market must pass the certification of American organic NOP, and the certification of NOP is signed by the American Bureau of Agriculture. Qualified, organic ingredient suppliers must also be certified by NOP. In the European and American markets, products with EC and NOP certification marks mean that they have the guarantee of high quality and high credibility. They are safe and assured organic products, and they are easier to gain the trust of consumers. Since its establishment, the natural products company has been facing the international market, and with the improvement of domestic and foreign consumers' demand and standards for organic products, it has continuously strengthened quality management, continuously introduced new organic products, and won the trust of consumers. Prior to this, natural products company's plant extracts, plant pigment products have entered the European and American markets, won the trust of many customers, the apple, ginseng two series of products obtained the European Union and the United States organic certification, to the peak of natural products.
2020
07-31
Natural products companies through Europe and the United States two organic certification
On April 30, Tianjin Jianfeng Natural Products Company's apple and ginseng series extract products obtained EU organic certification (EC) and US organic certification (NOP) certificates respectively. EU Organic Certification (EC) is the European inspection and certification body for organic products, with the qualification of identifying whether organic products meet the standards of Europe, Japan and the United States. The EC certificate mark is one of the most authoritative organic certification certificates in the world today. It is trusted by consumers and the organic industry. It has great credibility in the international market and is the guarantee for Chinese organic products to enter almost all organic markets in the world. American Organic Certification (NOP) is the most authoritative organic certification in the United States. Any manufacturer and distributor who intends to sell organic products in the United States market must pass the certification of American organic NOP, and the certification of NOP is signed by the American Bureau of Agriculture. Qualified, organic ingredient suppliers must also be certified by NOP. In the European and American markets, products with EC and NOP certification marks mean that they have the guarantee of high quality and high credibility. They are safe and assured organic products, and they are easier to gain the trust of consumers. Since its establishment, the natural products company has been facing the international market, and with the improvement of domestic and foreign consumers' demand and standards for organic products, it has continuously strengthened quality management, continuously introduced new organic products, and won the trust of consumers. Prior to this, natural products company's plant extracts, plant pigment products have entered the European and American markets, won the trust of many customers, the apple, ginseng two series of products obtained the European Union and the United States organic certification, to the peak of natural products.
2020
07-31
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