2013年10月22日星期二
batching plant
Concrete, abbreviated as "concrete", Cantonese called concrete, cementitious material is defined by the aggregate cemented into the overall project composites collectively. Usually talk refers to concrete as a cementitious material with cement, sand, stone for the aggregates, and water (with or without additives and admixtures) with a certain proportion, by mixing, forming, curing obtained cement concrete, also known as ordinary concrete. It is widely used in civil engineering.
Cement concrete is cement (or cement plus the amount of active admixture) as cementing materials, water and coarse and fine aggregates and other materials made by mixing an appropriate proportion with mixed materials, and then pouring molding obtained after hardening artificial stone . New mixing unhardened concrete, typically a concrete mixture (or fresh concrete). There is a certain strength of hardened concrete, said hardened concrete. Usually refers to the concrete in pavement engineering, asphalt concrete is also a common concrete
Depending on the requirements and conditions for the construction of concrete in the construction site or mixing station centralized agitation. Good fluidity concrete mixture can be self-loading mixer; less liquid or dry concrete mix is appropriate compulsory mixer. Before mixing the ingredients should mix requirements, control weighing error. Feeding sequence and mixing time have influence on the quality of concrete, should be strictly grasp, so that uniform mixing of the component materials
Cement concrete is cement (or cement plus the amount of active admixture) as cementing materials, water and coarse and fine aggregates and other materials made by mixing an appropriate proportion with mixed materials, and then pouring molding obtained after hardening artificial stone . New mixing unhardened concrete, typically a concrete mixture (or fresh concrete). There is a certain strength of hardened concrete, said hardened concrete. Usually refers to the concrete in pavement engineering, asphalt concrete is also a common concrete
Depending on the requirements and conditions for the construction of concrete in the construction site or mixing station centralized agitation. Good fluidity concrete mixture can be self-loading mixer; less liquid or dry concrete mix is appropriate compulsory mixer. Before mixing the ingredients should mix requirements, control weighing error. Feeding sequence and mixing time have influence on the quality of concrete, should be strictly grasp, so that uniform mixing of the component materials
2013年10月16日星期三
Problems Should Pay Attention to in Cement Concrete Pavement Construction
Cement concrete pavement has its resistance, bending, abrasion resistance, high stability, and many other advantages, are widely on the road at all levels. Cement concrete pavement construction, core is the mixing of concrete production and paving. Concrete mixing quality directly affects the intrinsic quality of the concrete, concrete pavement evenness affecting the quality is. Concrete slump is an important aspect of concrete production, what are the main factors affecting the concrete slump?
(1) the gradation change has great effects on the slump of concrete, water content and cover in the same case, slump is far less than the coarse material of concrete fine aggregate concrete slump, barn with concrete mix production process to aggregate material when you want to keep the cartridge on aggregate gradation is relatively stable, so as to ensure that the grading of concrete distribution.
(2) The changes in moisture content is even more obvious impact on the slump of concrete, mixing process should be measured in aggregate moisture content, scale should take out of the water.
(3) Cement temperature effect on slump of concrete cement is often ignored by builders, a factor that tends to occur in a single large production capacity of the concrete batching plant. More generous amount of mixing water mud, sometimes on one side to cement into a cement tank production and sometimes cement starting stirring as being cool, which not only enables the production of concrete high temperature, slump concrete temperatures are high, water absorption and larger and smaller.
(4) The weighing deviation of water scales and cement scales have a great influence on the slump of concrete, if the weighing deviation is stable, the operator can calculate based on the actual weight. If the deviation is less stable, especially water flow meter method of concrete batching plant, large and unstable water metering deviation, the slump is not easy to control.
(5) Amount of additives is also important factors affecting concrete slump, concrete additive amount of assembly made some large changes in physical and chemical properties.
(1) the gradation change has great effects on the slump of concrete, water content and cover in the same case, slump is far less than the coarse material of concrete fine aggregate concrete slump, barn with concrete mix production process to aggregate material when you want to keep the cartridge on aggregate gradation is relatively stable, so as to ensure that the grading of concrete distribution.
(2) The changes in moisture content is even more obvious impact on the slump of concrete, mixing process should be measured in aggregate moisture content, scale should take out of the water.
(3) Cement temperature effect on slump of concrete cement is often ignored by builders, a factor that tends to occur in a single large production capacity of the concrete batching plant. More generous amount of mixing water mud, sometimes on one side to cement into a cement tank production and sometimes cement starting stirring as being cool, which not only enables the production of concrete high temperature, slump concrete temperatures are high, water absorption and larger and smaller.
(4) The weighing deviation of water scales and cement scales have a great influence on the slump of concrete, if the weighing deviation is stable, the operator can calculate based on the actual weight. If the deviation is less stable, especially water flow meter method of concrete batching plant, large and unstable water metering deviation, the slump is not easy to control.
(5) Amount of additives is also important factors affecting concrete slump, concrete additive amount of assembly made some large changes in physical and chemical properties.
2013年8月27日星期二
sand making equipment
Sand is the most important sand making equipment, the process of the first use, safe.Sand in security matters and routine maintenance
1 regular downtime to open observation door to observe the internal wear of the crusher, the center feed tube, cone cap, impeller, indecent Road liner, circular shield, wear block wear after wear should be timely replacement or repair, replacement The wear blocks should be replaced at the same time, wear the same block weight. To open observation door to observe the inner workings of non-crusher working process, to avoid danger. Found that the impeller body abrasion timely replacement looking for manufacturers to repair.
Pay special attention to, without the manufacturer's consent is strictly prohibited without permission homemade impeller, or peril.
Sand Mobilube adding proper amount of grease with grease of super or 3 # lithium grease, every 400 hours, 2,000 hours of work to open the bearing spindle assembly cleaning, general work 7200 hours, replaced with new bearings.
The upper end of the spindle assembly bearing is swimming side, the lower end of the bearing assembly fixed end pulled the pulley by hand should be flexible rotation.
3, the drive the triangle belt tensioner force size should be properly adjusted to ensure that the triangle belt force uniform, both sides of the triangle tape should be grouped optional dual motor drive, then each group of its length is as consistent as possible. Should be adjusted so that the difference between the two motor current does not exceed 15A.
4, the sand making machine is running, the device is a high-speed device, should pay special attention to safety in production. Should be kept away from the device, For machine repair should be carried out after the shutdown.
1 regular downtime to open observation door to observe the internal wear of the crusher, the center feed tube, cone cap, impeller, indecent Road liner, circular shield, wear block wear after wear should be timely replacement or repair, replacement The wear blocks should be replaced at the same time, wear the same block weight. To open observation door to observe the inner workings of non-crusher working process, to avoid danger. Found that the impeller body abrasion timely replacement looking for manufacturers to repair.
Pay special attention to, without the manufacturer's consent is strictly prohibited without permission homemade impeller, or peril.
Sand Mobilube adding proper amount of grease with grease of super or 3 # lithium grease, every 400 hours, 2,000 hours of work to open the bearing spindle assembly cleaning, general work 7200 hours, replaced with new bearings.
The upper end of the spindle assembly bearing is swimming side, the lower end of the bearing assembly fixed end pulled the pulley by hand should be flexible rotation.
3, the drive the triangle belt tensioner force size should be properly adjusted to ensure that the triangle belt force uniform, both sides of the triangle tape should be grouped optional dual motor drive, then each group of its length is as consistent as possible. Should be adjusted so that the difference between the two motor current does not exceed 15A.
4, the sand making machine is running, the device is a high-speed device, should pay special attention to safety in production. Should be kept away from the device, For machine repair should be carried out after the shutdown.
Henan Province to jointly develop projects with Cambodia
August 22, Henan Province and the Ministry of Public Works and Transport of Cambodia Kingdom of Cambodia signed the transportation infrastructure cooperation "Memorandum of Understanding", Vice Governor Zhang Dawei attended the signing ceremony and met with Secretary of State of Cambodia, the Ministry of Public Works and Transport Deputy Minister Lin · Xide Nai party.
David Chang said that Henan is China's largest province highway mileage, mileage of 240,000 kilometers, the construction of highway network closer to the spatial distance, reduce logistics costs. Currently, the transportation sector, in enhancing road construction, improve construction technology to transform the road infrastructure, while also vigorously promote the construction of rural road network to meet the development needs of rural areas. All along, Henan and Cambodia in highway construction, planning, design exploration aspects of extensive cooperation, the cooperation agreement can be reached, will further promote Cambodia and Henan in the field of transportation infrastructure to establish a comprehensive, multi-level strategic partnership .
Lin · Xide Nai said the Cambodian government continues the rehabilitation and reconstruction of the transportation network as a priority development areas, which will further promote trade, rural development, regional and global economic integration, is currently a great need for Chinese investors, thanks to Henan provincial department of Transportation highway construction in Cambodia offered help. Especially gifted in Zhengzhou Branch Industrial Equipment Co., Ltd. provides HZS120 concrete mixing plant
Chile processing equipment
Chile "Mercury News" August 27, 2013 reported that, according to U.S. news agency Bloomberg recently announced global country credit risk assessment data, Chile scored 98.9, the organization of the Pacific Alliance countries with the lowest risk factor. Other Member States score: 125 points in Mexico, Colombia, 130.7 points, Peru 145.6 points. Latin American countries, Argentina is rated 2704.2, becoming the first country in the region ranked risk. Chile's mineral wealth, the Chinese company's unique Industrial Equipment Co., Ltd. jaw crusher, mill,processing equipment, mineral processing equipment to meet the requirements of the country.from: www.unique-crusher.com
Thailand nearly five years of development
Thailand Infrastructure Development Plan (2012-2016) was recently awarded Thailand Reconstruction and Development Strategy Committee unanimously adopted; for the smooth implementation of the scheme, the Government has allocated 22,700 million baht from finance for infrastructure projects, including: improved manufacturing and services infrastructure, on vacant economic development and utilization of fallow land, develop infrastructure, strategic development planning, improve the defense capabilities of natural disasters and to further strengthen the management of water resources protection measures.
If the successful completion of the plan efficiently, good infrastructure will maintain steady growth in Thailand's future economic added positive factor.
For the various planning projects to provide funding has become the government now needs to face the problems, the government is trying to amend the existing laws, regulations ways to attract investment in social capital, in order to solve the current problem of shortage of funds; "Thai private sector participation in the operation of state-owned utilities Ordinance "enacted in 1992, the government is currently discussing repair this department regulations, if the modification can be passed in the future scale of investment of 10 billion baht or more items must be in compliance with the new provisions of the Ordinance, only the formal approval of the State Council to carry out project investment.
Government wants private individual can invest in large projects, but also on small projects for investment, for example, civil servants and government housing construction land development.from china zhengzhou unique Industrial Equipment Co., Ltd. Specializing in the production of concrete machinery manufacturers, such are: concrete mixer,batching plant......website: www.unique-cons.com
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