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Concrete raw material, composite powder for concrete and preparation method of composite powder
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A technology for concrete and composite powder, applied in the field of materials, can solve the problems of scarcity of high-quality mineral admixtures and insufficient supply of admixtures, and achieve the effects of good technical coupling, improved technical and economic performance, and improved performance.
Active Publication Date: 2018-12-21
中建西部建设新疆有限公司 +1
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Problems solved by technology
However, at present, high-quality mineral admixtures are increasingly scarce, and admixtures in many areas are in short supply.
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preparation example Construction
[0041] The preparation method of composite powder for above-mentioned concrete,
[0042] Mix volcanic ash, desulfurized gypsum, oil shale, steel slag, and sodium metaaluminate to obtain a mixture; grind the mixture until the specific surface area is 480-520kg / m 3 , joined Hua Qiansu.
[0043] Further, the above mixture is ground by ball milling, and the gradation ratio of the ball milling steel section is: 11-11.5kg of Φ70mm steel balls, 16-17kg of Φ60mm steel balls, 18-18.5kg of Φ50mm steel balls, 10-11kg of Φ40mm steel balls .
[0044] The surface area is 480-520kg / m2 obtained by grinding with the gradation ratio of the above-mentioned ball mill steel section 3 powder.
[0045] The present invention also provides a technical solution:
[0046] A kind of concrete raw material, concrete comprises above-mentioned composite powder for concrete.
[0047] Further, the composite powder for concrete accounts for 38-42% of the total mass of concrete raw materials. In this embod...
Embodiment 1
[0051] The present embodiment provides a composite powder for concrete, which mainly includes the following components in parts by weight:
[0052] 30 parts of volcanic ash, 5 parts of desulfurized gypsum, 10 parts of oil shale, 15 parts of steel slag, 4 parts of activator, and 3 parts of Huaqiansu; the activator is sodium metaaluminate.
Embodiment 2
[0054] The present embodiment provides a composite powder for concrete, which mainly includes the following components in parts by weight:
[0055] 50 parts of volcanic ash, 15 parts of desulfurized gypsum, 30 parts of oil shale, 30 parts of steel slag, 6 parts of activator, and 4 parts of Huaqiansu; the activator is sodium metaaluminate.
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Abstract
The invention relates to the field of materials and in particular to a concrete raw material, composite powder for concrete and a preparation method of the composite powder. The composite powder for the concrete mainly comprises the following components in parts by weight: 30-50 parts of volcanic ash, 5-15 parts of desulphurization gypsum, 10-30 parts of oil shale, 15-30 parts of steel slag, 4-6 parts of an activator, 3-4 parts of Hua Qian Su, wherein the activator is sodiumsulfate or sodium metaaluminate. The Hua Qian Su is capable of improving performance of a concrete mixture. The volcanicash, the desulphurization gypsum, the oil shale and the steel slag have good technical coupling under the action of the Hua Qian Su. The activator is capable of improving performance of the compositepowder, realizing effective supply as well as improving technical economic performance. In addition, low-quality industrial wastes which cannot be applied in the past are adequately used, and a series of problems, such as environment protection, are solved.
Description
technical field [0001] The invention relates to the field of materials, in particular to concrete raw materials, composite powder for concrete and a preparation method thereof. Background technique [0002] High-performance concrete is a new type of high-tech concrete, which uses modern concrete science and technology to increase the safe service life of concrete structures and reduce waste and construction waste caused by repairing or demolishing old concrete structures; high-performance concrete can be used in large quantities Industrial waste and ore can reduce the consumption of natural resources and energy, and reduce environmental pollution; high-performance concrete has excellent working performance, is convenient for construction, can save labor, reduce energy consumption, and so on. Therefore, high performance concrete is the way out for the sustainable development of concrete. [0003] High-quality mineral admixtures are an indispensable part of high-performance c...
Claims
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