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No-shrinkage grouting filler with adjustable performance

A grouting material and adjustable technology, which is applied in the field of grouting material for basic engineering and non-shrinking grouting material, can solve the problems that the grouting material cannot fill the entire space, the base of the equipment is loose, and the fluidity is not enough, and achieves low brittleness and fluidity. Good, little creep effect

Inactive Publication Date: 2008-04-16
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there are obstacles such as anchor bolts in the space of the secondary grouting layer, it is difficult to really fill it
Ordinary cement mortar or concrete has drying shrinkage, so that after the grouting layer is hardened, a tight bond cannot be formed between the equipment base and the concrete foundation, resulting in looseness of the equipment base, which affects long-term use. When the grouting layer thickness is small, construction very difficult
For this reason, some developed countries have developed special secondary perfusion materials and entered the domestic market with the equipment, but the price is expensive
my country has also successfully developed perfusion materials to replace imported products, but the price is still relatively high, and there are also some shortcomings
For example, cracks are generated due to the shrinkage of the grouting material during use; the grouting material cannot fill the entire space due to insufficient fluidity, and grouting voids appear, etc.

Method used

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  • No-shrinkage grouting filler with adjustable performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, a kind of performance-adjustable non-shrinkage grouting material,

[0028] The grouting material is composed of cementitious material, quartz sand and a small amount of water reducing agent, expansion agent, water loss reducing agent, anti-early settlement agent, anti-early shrinkage agent and mixing water. The ratio of various materials is:

[0029] PO42.5R cement 40.5%;

[0030] Fly ash 6.1%;

[0031] Quartz sand 49%;

[0032] The gradation of quartz sand is:

[0033] 0.0~0.16mm 9% (by weight)

[0034] 0.16~0.315mm 35% (weight ratio)

[0035] 0.3 15~1.25mm 28% (weight ratio)

[0036] 1.25~2.5mm 18% (weight ratio)

[0037] 2.5~3.0mm 10 (weight ratio)

[0038] Naphthalenesulfonate formaldehyde condensate and sulfamate mixture 1.28%, the ratio of naphthalenesulfonate formaldehyde condensate and sulfamate is: 3:1.

[0039] Burnt quicklime and sulphoaluminate expansion agent 3.0%, the ratio of burnt quicklime and sulphoaluminate expansion agent is: 1:...

Embodiment 2

[0045] Example 2, a non-shrinkage grouting material with adjustable performance

[0046] The grouting material is composed of cementitious material, quartz sand and a small amount of water reducing agent, expansion agent, water loss reducing agent, anti-early settlement agent, anti-early shrinkage agent and mixing water. The ratio of various materials is:

[0047] PO42.5R type cement, 41.5%.

[0048] Fly ash, 7.4%.

[0049] Quartz sand, 47.5%.

[0050] The gradation of quartz sand is:

[0051] 0.0~0.16mm 8% (by weight)

[0052] 0.16~0.315mm 35% (weight ratio)

[0053] 0.315~1.25mm 30% (weight ratio)

[0054] 1.25~2.5mm 15% (weight ratio)

[0055] 2.5~3.0mm 12% (weight ratio)

[0056] Naphthalenesulfonate formaldehyde condensate and sulfamate mixture, 0.95%. (The ratio of naphthalenesulfonate formaldehyde condensate and sulfamate is: 3:1).

[0057] Burnt quicklime and sulphoaluminate expansion agent, 2.58%. (The ratio of overburned quicklime and sulphoaluminate expansio...

Embodiment 3

[0063] Embodiment 3, a kind of non-shrinkage grouting material with adjustable performance

[0064] The grouting material is composed of cementitious material, quartz sand and a small amount of water reducing agent, expansion agent, water loss reducing agent, anti-early settlement agent, anti-early shrinkage agent and mixing water. The ratio of various materials is:

[0065] PO42.5R type cement, 31.5%.

[0066] Ultrafine silica fume powder, 1.2%.

[0067] Fly Ash, 10%

[0068] Quartz sand, 54.3%.

[0069] The gradation of quartz sand is:

[0070] 0.0~0.16mm 8% (by weight)

[0071] 0.16~0.315mm 34% (weight ratio)

[0072] 0.315~1.25mm 29% (weight ratio)

[0073] 1.25~2.5mm 20% (weight ratio)

[0074] 2.5~3.0mm 9% (weight ratio)

[0075] Naphthalenesulfonate formaldehyde condensate, 1.0%.

[0076] Burnt quicklime and sulphoaluminate expansion agent, 1.83%. (The ratio of burnt quicklime and sulphoaluminate expansion agent is: 1:4.5)

[0077] Cellulose ether, 0.1%.

[...

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Abstract

The present invention belongs to the field of building material, and is especially one kind of no-shrinkage grouting filler with adjustable performance. The no-shrinkage grouting filler is hydraulic mixture comprising Portland cement and fly ash or silica fume as cementing material, quartzite, water reducing agent, expanding agent, water loss reducing agent, early settling preventing agent and early contract preventing agent. It has high flowability, no settling, no weeping, micro plastic expansion, no shrinkage, no cracking, adjustable performance, and no plastic settling and other excellent performance, and may be applied widely in installing large precise equipment, large area leveling, emergency repair engineering, etc.

Description

1. Technical field [0001] The invention relates to a grouting material for foundation engineering, especially a non-shrinkage grouting material with adjustable performance, which is mainly used for large-scale high-precision equipment installation, large-area automatic leveling and emergency repair projects, underground projects, tunnel projects, and anchoring projects , water interception and plugging, reinforcement engineering, etc., which belong to the field of building materials. 2. Background technology [0002] In recent years, with the increasing expansion and prosperity of the construction market, construction material manufacturers and research institutes are constantly updating equipment and researching new construction materials, thus a large number of new construction materials have emerged in the construction market. [0003] In order to ensure the installation and commissioning of the equipment, the secondary grouting layer is usually filled with fine concrete ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/08C04B14/04C04B14/06C04B24/16C04B24/22C04B22/06C04B22/14C04B24/38C04B22/04C04B16/06
CPCC04B2111/70C04B28/04C04B38/02C04B2103/20C04B2103/302C04B2103/46C04B2103/58
Inventor 杭美艳李斌赵根田李梅柳召刚
Owner INNER MONGOLIA UNIV OF SCI & TECH
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