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Ultrahigh performance cement-based erosion and abrasion resistant material

An ultra-high-performance, cement-based technology, applied in the field of ultra-high-performance cement-based anti-abrasion materials and anti-abrasion materials, can solve the problems of unstable anti-abrasion materials, insufficient anti-abrasion strength, and high application cost, and achieve The effect of reducing the number of macroscopic defects, reducing mechanical strength, and improving compatibility

Inactive Publication Date: 2019-01-25
WUDA JUCHENG STRUCTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an ultra-high-performance cement-based anti-abrasion material for the problems of instability, large shrinkage, insufficient anti-abrasion strength and high application cost of the existing anti-abrasion materials.

Method used

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  • Ultrahigh performance cement-based erosion and abrasion resistant material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An ultra-high-performance cement-based anti-abrasion material, which is made of the following components by weight: 100 parts of ordinary Portland cement, 25 parts of micro-silica fume, 15 parts of slag superfine powder, 15 parts of microbeads, expansion 10 parts of additive, 170 parts of quartz sand, 20 parts of steel fiber, 4.5 parts of composite admixture, 33 parts of water. The composite admixture is composed of redispersible rubber powder, polycarboxylate water reducer, defoamer, and viscosity modifier in a ratio of 30:20:1:1 by weight.

[0040] Among them, ordinary Portland cement is P O42.5 cement; the content of silica in microsilica fume is 95%, the 28d activity index is 108%, the average particle size is 0.2μm, and the specific surface area is 15㎡ / g; Fine powder is granulated blast furnace slag with 28d activity index of 105%, average particle size of 9μm, and specific surface area of ​​1.4㎡ / g; microbeads are 28d activity index of 106%, average particle size o...

Embodiment 2

[0043] An ultra-high-performance cement-based anti-abrasion material, which is made of the following components by weight: 100 parts of ordinary Portland cement, 15 parts of micro-silica fume, 20 parts of slag superfine powder, 20 parts of micro-beads, expansion 8 parts of agent, 160 parts of quartz sand, 25 parts of steel fiber, 4 parts of composite admixture, and 35 parts of water. The composite admixture is composed of redispersible rubber powder, polycarboxylate water reducer, defoamer, and viscosity modifier in a weight ratio of 30:20:2:0.5.

[0044] Among them, ordinary Portland cement is P·O42.5 cement; the silica content in microsilica fume is 99%, the 28d activity index is 110%, the average particle size is 0.19μm, and the specific surface area is 18㎡ / g; Fine powder is granulated blast furnace slag with 28d activity index of 105%, average particle size of 10μm, and specific surface area of ​​1.3㎡ / g; microbeads are 28d activity index of 108%, average particle size of 1...

Embodiment 3

[0047] An ultra-high-performance cement-based anti-abrasion material, which is made of the following components by weight: 100 parts of ordinary Portland cement, 18 parts of micro-silica fume, 12 parts of ultra-fine slag powder, 10 parts of micro-beads, expansion 6 parts of additive, 200 parts of quartz sand, 15 parts of steel fiber, 3.5 parts of composite admixture, 40 parts of water. Among them, the composite admixture is composed of redispersible rubber powder, polycarboxylate water reducer, defoamer, and viscosity regulator in a weight ratio of 30:20:1:2.

[0048] in

[0049] Ordinary Portland cement is P·O42.5 cement; the content of silica in silica fume is 92%, the 28d activity index is 105%, the average particle size is 0.3μm, and the specific surface area is 15㎡ / g; the slag is ultra-fine Powder is granulated blast furnace slag with 28d activity index of 105%, average particle size of 10μm, and specific surface area of ​​1.2㎡ / g; microbeads are 28d activity index of 105...

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Abstract

The invention discloses an ultrahigh performance cement-based erosion and abrasion resistant material which is prepared from the following components in parts by weight: 100 parts of portland cement,15-25 parts of micro silicon powder, 10-20 parts of mineral slag ultrafine powder, 10-20 parts of microsphere, 5-10 parts of a swelling agent, 160-200 parts of quartz sand, 15-25 parts of steel fiber,3-4.5 parts of a composite admixture and 30-40 parts of water, wherein the composite admixture is prepared from dispersible adhesive powder, a polycarboxylic water reducing agent, a defoamer and a viscosity modifier according to the weight part ratio of 30 : 20 : (1 to 2) : (0.5 to 2). The ultrahigh performance cement-based erosion and abrasion resistant material has the structure characteristicsof low porosity and high compactness, is excellent in mechanical strength, firm in adhesion to ordinary concrete, good in constructability and large and adjustable in fluidity within a range of 100mmto 270mm, has a coefficient of thermal expansion close to that of ordinary concrete can perform scraping construction in batch, and can also perform self-flowing and self-compaction, construction issimple, and the construction efficiency is about 2 times of the construction efficiency of an epoxy resin-based erosion and abrasion resistant material.

Description

technical field [0001] The invention relates to an anti-abrasion material, in particular to an ultra-high-performance cement-based anti-abrasion material, which belongs to the technical field of hydraulic construction materials. Background technique [0002] In water conservancy and hydropower projects, abrasion damage is one of the common diseases of hydraulic drainage structures, and it is also an important factor affecting the durability of hydraulic concrete. It mainly occurs in the spillway of the dam, the spillway tunnel, the lock chamber floor of the navigable structure, the water delivery corridor and the sand discharge hole at the bottom of the power station; especially when the water flow velocity is high and carries sand and other abrasive media , the damage is more serious. The use of anti-scour material protection is one of the effective ways to solve the scour damage of hydraulic drainage structures. [0003] At present, silica fume anti-impact and wear-resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/27
CPCC04B28/04C04B2111/2038C04B2111/27C04B2111/29C04B18/146C04B18/141C04B14/06C04B14/48C04B14/14C04B24/42C04B2103/0068C04B2103/302C04B2103/0057C04B24/383C04B24/38
Inventor 陈常明邱富源李北星万雄卫
Owner WUDA JUCHENG STRUCTURE CO LTD
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