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A grc-type light-weight thermal insulation-free template incorporating iron tailings and preparation method thereof

A formwork and iron tailing-free technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as resource waste, environmental and ecological pollution, reduce construction intensity, reduce consumption, Connection fixed simple effect

Active Publication Date: 2017-10-24
CHINA NO 15 METALLURGICAL CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, according to incomplete statistics, my country's current iron tailings reserves are as high as more than one billion tons, accounting for nearly 1 / 3 of the total tailings stockpile. The annual discharge of iron tailings is nearly 300 million tons, but the comprehensive utilization rate is only About 7%, far lower than the level of 60% abroad
A large number of stockpiled iron tailings not only cause waste of resources, but also lead to serious environmental and ecological pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A GRC-type light-weight thermal insulation non-disassembly formwork mixed with iron tailings, its formula is composed of the following important percentages of raw materials: cementitious material, 22.0%; polycarboxylate high-efficiency water reducer , 0.33%; alkaline activator, 2.6%; expansion material, 8.0%; iron tailings, 26%; glass fiber, 3.7%, water, 37.37%.

[0031] Specific steps are as follows:

[0032] (1) Add the iron tailings, glass fiber and appropriate amount of water into the mixer according to the above ratio and stir for 4 to 5 minutes, so that the iron tailings and glass fiber are evenly mixed and fully wetted;

[0033] (2) Add the activator, expansion material and gelling material into the stirrer according to the above ratio and stir for 2-4 minutes;

[0034] (3) Mix the remaining water and polycarboxylate high-efficiency water reducer evenly, then add it to the mixer, and stir for 4 to 5 minutes to obtain a mixture with good workability; ...

Embodiment 2

[0038] Example 2: A GRC-type light-weight heat-preservation non-disassembly formwork mixed with iron tailings, its formula is composed of the following important percentages of raw materials: cementitious material, 17.5%; polycarboxylate high-efficiency water reducer , 0.26%; alkaline activator, 2.4%; expansion material, 9.0%; iron tailings, 24%; glass fiber, 4.5%, water, 42.34%.

[0039] The specific steps of this embodiment are the same as those in Embodiment 1.

[0040] In step 1, the bulk density of the iron tailings used is 2000-2200kg / m 3 , collected according to the methods described in the "Technical Specifications for Sampling and Sample Preparation of Industrial Solid Waste" and "Handbook of Experimental Analysis and Evaluation of Solid Waste", in which the content of radioactive substances complies with GB 6566-2010 "Limits of Radionuclides in Building Materials", and the content of harmful elements Conform to GB / T14684 "Sand for Construction" standard.

[0041] A...

Embodiment 3

[0042] Example 3: A GRC-type light-weight thermal insulation non-dismantling formwork mixed with iron tailings, its formula is composed of the following important percentages of raw materials: cementitious material, 26.5%; polycarboxylate high-efficiency water reducer , 0.4%; alkaline activator, 2.9%; expansion material, 7.0%; iron tailings, 29%; glass fiber, 3.0%, water, 31.2%.

[0043] The specific steps of this embodiment are the same as those in Embodiment 1.

[0044] In step 1, the bulk density of the iron tailings used is 2000-2200kg / m 3 , collected according to the methods described in the "Technical Specifications for Sampling and Sample Preparation of Industrial Solid Waste" and "Handbook of Experimental Analysis and Evaluation of Solid Waste", in which the content of radioactive substances complies with GB 6566-2010 "Limits of Radionuclides in Building Materials", and the content of harmful elements Conform to GB / T14684 "Sand for Construction" standard.

[0045] Afte...

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PUM

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Abstract

The invention discloses a GRC type light-weight insulation-free formwork mixed with iron tailings and a preparation method thereof. During preparation, iron tailings, glass fibers, activators, expansion materials, cementitious materials and preformed Add water into the agitator and stir for a certain period of time, then mix the remaining water and polycarboxylate water reducer and pour it into the agitator to stir to obtain a mixture. After demolding, depending on the curing conditions, it can be cured until it can be stacked and transported, that is, the product preparation process is completed. The formwork prepared by the present invention has the characteristics of light weight, fire and flame retardancy, high strength, good heat preservation effect, firm bonding with castables, and The advantages of cutting, adjustable size, no need to disassemble, and low cost can effectively reduce the problem of cold and heat bridges in buildings, simplify construction procedures, reduce construction strength, and speed up construction progress, especially for high-rise buildings. Related environmental problems caused by the accumulation of iron tailings.

Description

technical field [0001] The invention relates to the field of dismantling-free formwork, in particular to a GRC type light-weight thermal insulation non-dismantling formwork mixed with iron tailings and a preparation method thereof. Background technique [0002] As an important tool in the construction of cast-in-place concrete structures, traditional formwork materials mainly include wood, bamboo and steel, etc., and the turnover time is usually only three times, and the manufacture of formwork requires a large amount of wood and steel, which leads to excessive use of natural resources and environmental problems; In addition, when the formwork is produced, installed, and removed, the amount of work is relatively large, and the engineering cost accounts for 30% to 35% of the cost of the cast-in-place concrete structure, and the labor consumption accounts for 40% to 50%. In addition, in order to facilitate formwork removal, waste engine oil is often coated on the inner surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/12C04B14/42
CPCY02W30/91
Inventor 陈跃柳舟通王浩郭建林范方禄姜玉凤喻振贤李汇喻杰
Owner CHINA NO 15 METALLURGICAL CONSTR GRP
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