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 Cement Implementation GB175-1999 Standard Strength Guarantee Value
| Product |
Strength Grade |
Compressive Strength Mpa |
Compressive 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
The company requires to do a good job in summer safety production
The high temperature season is approaching, and the group company issued a notice a few days ago to make arrangements for safe production in summer. The notice requires all subordinate units of the company to attach great importance to the work of production safety in summer, and all production and business units should hold a special meeting on production safety in summer. According to the characteristics of production in summer, they should focus on safety risk analysis for mines, outdoor operations and high-temperature posts, and implement control measures to avoid the occurrence of safety accidents such as scalding, heatstroke and electric shock. In order to further strengthen the safety production management in the high temperature season, the notice requires the main person in charge of each production and business unit to lead a team to conduct a comprehensive inspection of the production and business premises according to the characteristics of summer production; strengthen the daily safety production inspection of key posts and special posts; timely rectify the found unsafe behaviors and hidden dangers; Strengthen the management of the storage and use of flammable, explosive, dangerous chemicals and drugs; cooling measures shall be taken for the space exceeding the storage temperature limit of articles. If it is found that the electrical equipment circuit and exhaust fan circuit are aged and damaged, replace them in time and keep the grounding wire in good condition. Do a good job in checking the fire pool, pipeline water pressure and fire extinguishing equipment to ensure that the fire fighting facilities are sensitive, intact and reliable. The high temperature in summer is also a period of frequent occurrence of heatstroke and other diseases. The notice requires all units to do a good job in heatstroke prevention and cooling, implement various relevant measures, and equip necessary cooling facilities or materials such as fans, air conditioners, ice cubes and other cooling facilities or materials according to the conditions of the production site; do a good job in the distribution of heatstroke prevention drugs, supplies and cool drinks in workshops, warehouses, construction sites and other production lines; strengthen canteen management to prevent food poisoning. (this newspaper reporter)
2020
07-31
The company requires to do a good job in summer safety production
The high temperature season is approaching, and the group company issued a notice a few days ago to make arrangements for safe production in summer. The notice requires all subordinate units of the company to attach great importance to the work of production safety in summer, and all production and business units should hold a special meeting on production safety in summer. According to the characteristics of production in summer, they should focus on safety risk analysis for mines, outdoor operations and high-temperature posts, and implement control measures to avoid the occurrence of safety accidents such as scalding, heatstroke and electric shock. In order to further strengthen the safety production management in the high temperature season, the notice requires the main person in charge of each production and business unit to lead a team to conduct a comprehensive inspection of the production and business premises according to the characteristics of summer production; strengthen the daily safety production inspection of key posts and special posts; timely rectify the found unsafe behaviors and hidden dangers; Strengthen the management of the storage and use of flammable, explosive, dangerous chemicals and drugs; cooling measures shall be taken for the space exceeding the storage temperature limit of articles. If it is found that the electrical equipment circuit and exhaust fan circuit are aged and damaged, replace them in time and keep the grounding wire in good condition. Do a good job in checking the fire pool, pipeline water pressure and fire extinguishing equipment to ensure that the fire fighting facilities are sensitive, intact and reliable. The high temperature in summer is also a period of frequent occurrence of heatstroke and other diseases. The notice requires all units to do a good job in heatstroke prevention and cooling, implement various relevant measures, and equip necessary cooling facilities or materials such as fans, air conditioners, ice cubes and other cooling facilities or materials according to the conditions of the production site; do a good job in the distribution of heatstroke prevention drugs, supplies and cool drinks in workshops, warehouses, construction sites and other production lines; strengthen canteen management to prevent food poisoning. (this newspaper reporter)
2020
07-22
On the founding day of the party on July 1, the grass-roots party organizations under the group Party committee organized special study and review of the oath of joining the party to commemorate the 99th anniversary of the founding of the Communist Party of China. In the afternoon of the same day, Yunnan Jianfeng Party Branch organized all party members to carry out a series of activities to remember the revolutionary martyrs, study the party's constitution, and review the oath of joining the party. Zhou Jiping, the organizing member of the Yunnan Jianfeng Party Branch, conveyed to all participating party members the relevant content of the higher-level party committee's ''Implementation Plan for the Remediation and Excellence of State-owned Enterprise Party Members'', requiring party members to strengthen party spirit and improve their own quality, take responsibility and dare to act, and keep in mind The lofty mission given by the times shows the demeanor of party members in state-owned enterprises. Fang Xuhua, secretary of Yunnan Jianfeng Party Branch, led all Party members to study the Party Constitution and review the oath of joining the Party. All the participating party members participated in the theme study meeting organized by the party committee of the group company to commemorate the 99th anniversary of the founding of the Communist Party of China through the video conference system. On July 1, the party branch of Guizhou Huangping Jianfeng Cement Company held a special commemorative event for the 99th anniversary of the founding of the party to review the oath of joining the party, study the history of the party, and further understand the difficult and glorious 99 years of the Chinese Communist Party. Through study, party members are deeply aware of the hardships in the early days of the founding of the party and the importance of development. As party members, they must strictly demand themselves, continuously improve their self-cultivation level, strengthen their beliefs, and do a good job in the vanguard and exemplary role of party members. (qi jian mei tongyi)
2020
07-31
Jianfeng Pharmaceutical Party Committee Commemorates 99th Anniversary of Party Founding
In order to celebrate the 99th anniversary of the founding of the Communist Party of China, on the afternoon of June 28, the Party committee of Jianfeng pharmaceutical company held a special commemorative activity. More than 100 Party members reviewed the oath of joining the party and listened to the special party class of "why can the Communist Party of China" delivered by Professor Zhang Wecai of the Party School of Jinhua municipal Party committee. At the beginning of the activity, Jin Huazhong, secretary of the Party Committee of Jianfeng Pharmaceutical, led all the participating party members to review the oath of joining the Party. He emphasized that the oath of joining the party is a solemn promise of every party member. As a party member, you must not forget your original intention, and compare the content of the oath in your work and life, constantly review, constantly reflect, strengthen self-examination, and use practical actions to fulfill your commitment to the party. Promise. On April 17, 2019, General Secretary Xi Jinping pointed out during an inspection in Chongqing: "We must focus on major issues such as why the Communist Party of China can, why Marxism can, and why socialism with Chinese characteristics is'good. 'Ideological and public opinion guidance." In order to enable party members to have a deeper understanding and understanding of this, the party committee of Jianfeng Pharmaceutical invited Professor Zhang Wancai, member of the School Affairs Committee and dean of the Jinhua Municipal Party School, to give a special lecture entitled "Why the Communist Party of China can. Professor Zhang reviewed the glorious history and great achievements of the Communist Party of China, combining theory with examples and current affairs, and expounded from the aspects of the Communist Party of China taking the people as the center, keeping in mind the mission of seeking happiness for the people, having the courage to self revolution and having historical responsibility. The content of his lectures was profound and simple, the classroom atmosphere was serious and earnest, and Party members were deeply enlightened. After the lecture, Jin Huazhong said in his concluding speech that the purpose of holding this commemorative event is to make all party members keep their vows in mind, strengthen theoretical guidance, strengthen ideals and beliefs, consciously practice the theme education of "not forgetting the original intention and keeping in mind the mission", and enhance all party members. Self-confidence in the road, theory, system, and culture. He stressed that the successful experience of the Communist Party of China, as a great organization, is of great practical significance to the reform and development of enterprises. Party organizations at all levels of Jianfeng Pharmaceutical should further strengthen the building of party branches and party members, further give full play to the political core role of party organizations and the vanguard and exemplary role of party members, promote the production and operation of enterprises with party building, and unite the broad masses of party members, cadres and all staff. devote themselves to all kinds of work with more enthusiasm, higher morale and more pragmatic style, and strive to achieve the annual work goals of the pharmaceutical company, together to build a better peak pharmaceutical industry. (Reporter Chen Shengmu)
2020
07-02
Jianfeng Pharmaceutical Party Committee Commemorates 99th Anniversary of Party Founding
In order to celebrate the 99th anniversary of the founding of the Communist Party of China, on the afternoon of June 28, the Party committee of Jianfeng pharmaceutical company held a special commemorative activity. More than 100 Party members reviewed the oath of joining the party and listened to the special party class of "why can the Communist Party of China" delivered by Professor Zhang Wecai of the Party School of Jinhua municipal Party committee. At the beginning of the activity, Jin Huazhong, secretary of the Party Committee of Jianfeng Pharmaceutical, led all the participating party members to review the oath of joining the Party. He emphasized that the oath of joining the party is a solemn promise of every party member. As a party member, you must not forget your original intention, and compare the content of the oath in your work and life, constantly review, constantly reflect, strengthen self-examination, and practice with practical actions.
2020
07-02
Jianfeng Pharmaceutical Party Committee Commemorates 99th Anniversary of Party Founding
In order to celebrate the 99th anniversary of the founding of the Communist Party of China, on the afternoon of June 28, the Party committee of Jianfeng pharmaceutical company held a special commemorative activity. More than 100 Party members reviewed the oath of joining the party and listened to the special party class of "why can the Communist Party of China" delivered by Professor Zhang Wecai of the Party School of Jinhua municipal Party committee. At the beginning of the activity, Jin Huazhong, secretary of the Party Committee of Jianfeng Pharmaceutical, led all the participating party members to review the oath of joining the Party. He emphasized that the oath of joining the party is a solemn promise of every party member. As a party member, you must not forget your original intention, and compare the content of the oath in your work and life, constantly review, constantly reflect, strengthen self-examination, and use practical actions to fulfill your commitment to the party. Promise. On April 17, 2019, General Secretary Xi Jinping pointed out during an inspection in Chongqing: "We must focus on major issues such as why the Communist Party of China can, why Marxism can, and why socialism with Chinese characteristics is'good. 'Ideological and public opinion guidance." In order to enable party members to have a deeper understanding and understanding of this, the party committee of Jianfeng Pharmaceutical invited Professor Zhang Wancai, member of the School Affairs Committee and dean of the Jinhua Municipal Party School, to give a special lecture entitled "Why the Communist Party of China can. Professor Zhang reviewed the glorious history and great achievements of the Communist Party of China, combining theory with examples and current affairs, and expounded from the aspects of the Communist Party of China taking the people as the center, keeping in mind the mission of seeking happiness for the people, having the courage to self revolution and having historical responsibility. The content of his lectures was profound and simple, the classroom atmosphere was serious and earnest, and Party members were deeply enlightened. After the lecture, Jin Huazhong said in his concluding speech that the purpose of holding this commemorative event is to make all party members keep their vows in mind, strengthen theoretical guidance, strengthen ideals and beliefs, consciously practice the theme education of "not forgetting the original intention and keeping in mind the mission", and enhance all party members. Self-confidence in the road, theory, system, and culture. He stressed that the successful experience of the Communist Party of China, as a great organization, is of great practical significance to the reform and development of enterprises. Party organizations at all levels of Jianfeng Pharmaceutical should further strengthen the building of party branches and party members, further give full play to the political core role of party organizations and the vanguard and exemplary role of party members, promote the production and operation of enterprises with party building, and unite the broad masses of party members, cadres and all staff. devote themselves to all kinds of work with more enthusiasm, higher morale and more pragmatic style, and strive to achieve the annual work goals of the pharmaceutical company, together to build a better peak pharmaceutical industry. (Reporter Chen Shengmu)
2020
07-03