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A kind of high-strength anti-radiation pumpable concrete and its preparation method

A pumping concrete and anti-radiation technology, applied in the field of concrete, can solve problems such as difficult pumpability, achieve good pumpability, increase density, and increase strength

Active Publication Date: 2020-08-25
河北中耐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there are a lot of reports on high-strength concrete, radiation-resistant concrete, and pumpable concrete in the prior art, it is very difficult to achieve good pumpability for high-strength radiation-resistant concrete

Method used

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  • A kind of high-strength anti-radiation pumpable concrete and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: the preparation of different formula concrete

[0038] Concrete with different formulations was prepared according to the raw material composition and dosage in Table 1 below. Among the raw materials used: cement is Po42.5 grade, fly ash is grade 1, mineral powder is S95 grade, silica fume is 92 grade, barite 1 is barite sand with fineness modulus 2.3-3.0, heavy The spar 2 is barite with an average particle size of 5-20mm, the steel forging is continuously graded steel forging of 5-20mm, the steel grit is steel grit with a fineness modulus of 2.3-3.0, and the water reducing agent is polycarboxylate water reducing agent. agent.

[0039] The preparation method of the concrete of each formula is as follows:

[0040] (1) Under stirring, add cement, fly ash, mineral powder, silica fume, barite, steel forging, steel sand to the mixer, and stir for 30 seconds until the coarse and fine aggregates are evenly mixed;

[0041] (2) Add 50% of the required amount of ...

Embodiment 2

[0045] Embodiment 2: the performance detection of each formula concrete of preparation gained

[0046] The concrete of each formula prepared in Example 1 was tested for concrete strength (method and classification see GB / T50081-2002, GB50010-2010), degree of expansion and slump (method see GBT 14902-2012), and the obtained results are shown in the following table 2.

[0047]Table 2 embodiment 1 prepares the performance detection result of each formula concrete of gained

[0048] recipe number Concrete strength (MPa) Expansion (mm) Slump (mm) 1 85.4 550 220 2 81.7 370 140 3 84.2 570 225 4 87.5 670 260 5 82.6 330 125 6 86.3 680 265 7 88.8 660 265 8 83.6 340 120 9 88.2 670 265 10 84.9 560 220 11 80.6 380 140 12 83.8 560 220

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Abstract

The invention belongs to the technical field of concrete, and relates to high-strength and radiation-proof pumpable concrete and a preparation method thereof. In parts by weight, raw materials for preparing the high-strength and radiation-proof pumpable concrete include 250-500 parts of cement, 80-200 parts of fly ash, 50-150 parts of mineral powder, 15-50 parts of silica fume, 750-1500 parts of barite sand and steel sand, 1500-3000 parts of forged steel, 80-250 parts of water and 2-5 parts of a water reducing agent. The good pumpability of the high-strength and radiation-proof concrete can beachieved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and relates to a high-strength anti-radiation pumpable concrete and a preparation method thereof. Background technique [0002] Concrete is an essential material in the construction industry. With the development of concrete technology and the expansion of application requirements, various new types of concrete have emerged, including high-strength concrete, radiation-resistant concrete, and pumpable concrete. [0003] High-strength concrete refers to concrete with a strength grade of C60 and above. It is made of cement, sand, stone raw materials plus water reducing agent or at the same time plus fly ash, slag powder, silicon powder and other mixtures. As a new building material, high-strength concrete is widely used in high-rise building structures, long-span bridge structures and some special structures due to its advantages of high compressive strength, strong deformation resistance, high d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00146C04B2111/00258C04B2201/52C04B18/08C04B18/141C04B18/146C04B14/368C04B14/34C04B2103/302
Inventor 王晓中
Owner 河北中耐新材料科技有限公司
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