Anchor large-size low-cement concrete formula

A cement concrete, large-volume technology, applied in the field of building materials, can solve the problems of high production cost, low compressive strength and high cement content, and achieve the effect of reducing production cost and high compressive strength

Inactive Publication Date: 2019-11-19
NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the concrete used for anchorage has the disadvantages of high cement content but low compressive strength and high production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0015] A large-volume low-cement concrete formula for anchorage, which is composed of the following raw materials in parts by weight: 100 parts of P.Ⅱ 52.5 grade cement; 90 parts of S95 grade mineral powder; 130 parts of F class I fly ash; 700 parts of sand in river sand 1000 parts of gravel with a particle size of (5-25) mm; 130 parts of water; 3.5 parts of PCA® (I) carboxylic acid high-performance water reducer (developed by Jiangsu Academy of Building Research).

specific Embodiment 2

[0017] A large-volume low-cement concrete formula for anchorage, which is composed of the following raw materials in parts by weight: 136 parts of P.Ⅱ 52.5 grade cement; 98 parts of S95 grade mineral powder; 156 parts of F class I fly ash; 763 parts of river sand 1099 parts of gravel with a particle size of (5-25) mm; 148 parts of water; 3.9 parts of PCA® (I) carboxylic acid high-performance superplasticizer (developed by Jiangsu Academy of Building Research).

specific Embodiment 3

[0019] A large-volume low-cement concrete formula for anchorage, which is composed of the following raw materials in parts by weight: 150 parts of P.Ⅱ 52.5 grade cement; 110 parts of S95 grade mineral powder; 170 parts of F class I fly ash; 800 parts of sand in river sand 1200 parts of gravel with a particle size of (5-25) mm; 160 parts of water; 4.5 parts of PCA® (I) carboxylic acid high-performance superplasticizer (developed by Jiangsu Academy of Building Research).

[0020] The advantages of the present invention are: the 7d compressive strength of the concrete produced by this formula can reach 35.4, and the 28d compressive strength can reach 55.3. Under the premise of the target, the amount of cement per cubic meter was greatly reduced (150kg / m 3 Within), greatly reducing the production cost of the enterprise.

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Abstract

The invention discloses an anchor large-size low-cement concrete formula. The anchor large-size low-cement concrete formula is composed of following raw materials, by weight, 100 to 150 parts of cement, 90 to 110 parts of ore powder, 130 to 170 parts of fly ash, 700 to 800 parts of sand, 1000 to 1200 parts of broken stone, 130 to 160 parts of water, and 3.5 to 4.5 parts of a water reducer. The advantages are that: the 7d compressive strength of the concrete produced based on the anchor large-size low-cement concrete formula reaches 35.4, 28d compressive strength reaches 55.3, concrete compressive strength is high, anchor using requirements are satisfied completely, concrete working performance and technology index are ensured, and at the same time, the per cubic metre cement using amount (lower than 150kg / m3) is reduced greatly, and enterprise production cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an anchorage large-volume low-cement concrete formula. Background technique [0002] Concrete is an important basic building material, its usage is huge, and its performance needs to meet certain standards before it can be safely used in the corresponding environment. At present, the concrete used for anchorage has the disadvantages of high cement content but low compressive strength and high production cost. Contents of the invention [0003] The object of the present invention is to provide a large-volume low-cement concrete formula for an anchorage with low cement content and high compressive strength. [0004] In order to achieve the above purpose, the present invention adopts the following technical scheme: the formula of a large-volume low-cement concrete for anchorage is composed of the following raw materials in parts by weight: cement (100-150) parts; miner...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B18/141C04B18/08C04B14/068C04B14/02C04B2103/302
Inventor 王东伟郝建武吕牧王博文胡尚勇常攀
Owner NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG
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