Coal mine freezing deep well C100 concrete and application thereof
A technology for concrete and deep wells, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as well wall thickness, high cost, and difficult construction
Inactive Publication Date: 2013-06-19
中煤第七十一工程处 +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of this invention is to provide a high-strength concrete that can adapt to the well wall of frozen deep wells in coal mines, so as to solve the defects of thick well walls, difficult construction and high cost
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0010] 1. Selected raw materials:
[0011] 1. Cement: P·O42.5 grade ordinary Portland cement produced for Shandong Cement Plant;
[0012] 2. Coarse aggregate: 5~16mm gravel;
[0013] 3. Fine aggregate: river sand;
[0014] 4. Admixture: 3 kinds of raw materials are used in combination, namely silicon powder, fly ash and mineral powder.
[0015] a. Silicon powder is produced in Shanghai, with an average particle size of 0.15-0.20 μm and a specific surface area of 15,000-20,000 m 2 / kg, the SiO2 content is greater than 85%, the ignition loss is not greater than 6%, and it has extremely strong surface activity.
[0016] b. Fly ash is grade I F grade ash produced in Nanjing, and the chemical composition / % of grade I fly ash is as follows:
[0017] SiO2 Al2O3 Fe2O3 CaO MgO SO3 K2O Na2O Loss on ignition
[0018] 50.99 31.34 5.93 3.9 1.27 1.45 1.5 0.19 2.52
[0019] c. The mineral powder is S95 mineral powder produced in Nanjing, the specific surface area is 4360cm2 / g, and th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a coal mine freezing deep well C100 concrete and application thereof. The concrete comprises cement, coarse aggregate and fine aggregate, and is characterized by also comprising admixture consisting of silica powder, fly ash and mineral powder, and additive consisting of polycarboxylic acid series high efficiency water reducing agent. The admixture consists of the following raw materials according to parts by weight: 10 parts of silica powder, 10-20 parts of fly ash and 10-20 parts of mineral powder. The mixing proportion of all raw materials of the C100 concrete is 350-500kg / m<3> of concrete, 800-1200kg / m<3> of coarse aggregate, 500-800kg / m<3> of fine aggregate, 100-250kg / m<3> of admixture and 10-30kg / m<3> of additive. Applied to manufacture the wall of a coal mine deep well, the concrete can lessen the thickness of the well wall to great extent and the structure self-weight, and reduces consumption of materials and energy, saves engineering investment, simultaneously improves the service durability of concrete dramatically and has crucial significance to social and economic benefits.
Description
technical field [0001] The invention relates to a concrete and its application, in particular to C100 high-strength and high-performance concrete suitable for manufacturing the well wall of the frozen section of deep and thick topsoil in coal mines. Background technique [0002] At present, the concrete strength level of the frozen deep shaft wall of coal mines commonly used at home and abroad is below C50, which results in a relatively thick wall thickness of the frozen deep shafts of coal mines. After searching, there are many high-strength and high-performance concrete buildings with strength grades above C100 in the United States, Canada, and Germany. Japan not only uses high-strength and high-performance concrete above C100 to build high-rise residential buildings, but also uses it to manufacture prestressed concrete bridges, prestressed concrete piles, trusses, pipes, poles, etc. Due to the characteristics of frozen deep wells in coal mines: low negative temperature o...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B28/04C09K8/50C04B14/04C04B18/08
CPCC04B28/02Y02W30/91C04B14/02C04B14/062C04B18/08C04B18/12C04B20/0096C04B2103/302
Inventor 徐辉东吴信远方体利郭保国刘宁
Owner 中煤第七十一工程处