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High-performance shrinkage-free cement-based grouting material prepared by manufactured sand and preparation method of cement-based grouting material

A machine-made sand and cement-based technology, which is applied in the field of cement-based materials, can solve the problems of surface laitance and easy sinking of large-volume fine aggregates, and achieve high uniformity, good fluidity, and mitigation of abuse. Effect

Inactive Publication Date: 2017-10-13
经纬建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the primary purpose of the present invention is to provide a high-performance non-shrinkage cement-based grout prepared with machine-made sand; The choice overcomes the problems of difficulty in using large amounts of fine aggregate and its easy sinking and serious surface laitance, thereby obtaining a low-cost, good fluidity, high uniformity, plastic micro-expansion without shrinkage, early strength and high strength, etc. Cement-based grout with performance advantages

Method used

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  • High-performance shrinkage-free cement-based grouting material prepared by manufactured sand and preparation method of cement-based grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: A high-performance non-shrinkage cement-based grout prepared with machine-made sand

[0034] This high-performance non-shrinkage cement-based grouting material is composed of machine-made sand, ordinary Portland cement, fly ash, slag powder, fiber, heavy material (polycarboxylate superplasticizer dry powder, defoamer, plastic retainer, anti-early shrinkage agent and water-retaining agent), light materials (rapid hardening sulfoaluminate cement, expansion agent and gypsum are mixed), and the ratio of various materials is:

[0035] Machine-made sand 0-0.6mm 24%

[0036] Machine-made sand 0.6-2.36mm 25%

[0037] Machine-made sand 2.36-4.75mm 5%

[0038] P.O42.5 cement 35%

[0039] Fly Ash 6%

[0040] Slag powder 1.854%

[0041] Polypropylene fiber 0.02%

[0042] Polycarboxylate superplasticizer 0.09%

[0043] Sodium Glucose Plasticizer 0.0075%

[0044] Defoamer 0.006%

[0045] Anti-premature shrinkage agent 0.0175%

[0046] Cellulose ether water retain...

Embodiment 2

[0052] Example 2: A high-performance non-shrinkage cement-based grout prepared with machine-made sand

[0053] The similarities with Example 1 are no longer described, and the differences are as follows:

[0054] Machine-made sand 0-0.6mm 20%

[0055] Machine-made sand 0.6-2.36mm 25%

[0056] Machine-made sand 2.36-4.75mm 5%

[0057] P.O42.5 cement 36%

[0058] Fly Ash 6%

[0059] Slag Powder 4.35%

[0060] Polypropylene fiber 0.02%

[0061] Polycarboxylate superplasticizer 0.09%

[0062] Sodium Glucose Plasticizer 0.0075%

[0063] Defoamer 0.006%

[0064] Anti-premature shrinkage agent 0.0175%

[0065] Cellulose ether water retaining agent 0.005%

[0066]R.SAC42.5 cement 1.5%

[0067] AC expansion agent 1%

[0068] Gypsum 1.004%

[0069] The cement-based grouting material obtained in this example can be used directly after adding water and stirring evenly, wherein the weight ratio of water to material is 0.135.

Embodiment 3

[0070] Example 3: A high-performance non-shrinkage cement-based grout prepared with machine-made sand

[0071] The similarities with Example 1 are no longer described, and the differences are as follows:

[0072] Machine-made sand 0-0.6mm 26%

[0073] Machine-made sand 0.6-2.36mm 26%

[0074] Machine-made sand 2.36-4.75mm 8%

[0075] P.O42.5 cement 32%

[0076] Fly Ash 3%

[0077] Slag Powder 1.35%

[0078] Polypropylene fiber 0.03%

[0079] Polycarboxylate superplasticizer 0.08%

[0080] Sodium Glucose Plasticizer 0.0075%

[0081] Defoamer 0.006%

[0082] Anti-premature shrinkage agent 0.0175%

[0083] Cellulose ether water retaining agent 0.003%

[0084] R.SAC42.5 cement 1.5%

[0085] AC expansion agent 1%

[0086] Gypsum 1.006%

[0087] The cement-based grouting material obtained in this example can be used directly after adding water and stirring evenly, wherein the weight ratio of water to material is 0.125.

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Abstract

The invention relates to a high-performance shrinkage-free cement-based grouting material prepared by manufactured sand, which comprises the following raw materials by weight percentage: 50-60% of manufactured sand, 30-40% of ordinary portland cement, 3-6% of fly ash, 1-5% of slag powder, 0.02-0.04% of fiber, 0.1-0.14% of heavy material and 3-5% of light material. A preparation method of the cement-based grouting material comprises the following steps of manufactured sand treatment: selecting sand within three gradation ranges produced by a dry sand manufacturing system for standby, proportionally compounding and mixing components in the light material and the heavy material to obtain a mixture A, and proportionally mixing the manufactured sand, the ordinary portland cement, the fly ash, the slag powder, the fiber and the mixture A to obtain the cement-based grouting material. The cement-based grouting material has the advantages of low cost, good flowability, high uniformity, plastic micro-expansion without shrinkage, early strength, high strength and the like.

Description

technical field [0001] The invention relates to the technical field of cement-based materials, in particular to a high-performance non-shrinkage cement-based grout prepared with machine-made sand and a preparation method thereof. Background technique [0002] With the development of the construction industry and the needs of building construction, the unique properties of grouting materials have gradually been recognized and accepted by people, and its application fields have also been continuously expanded, playing an increasingly important role in engineering. [0003] Cement-based grout is a dry-mixed material composed of cement as the basic material, an appropriate amount of fine aggregate, and a small amount of concrete admixture and other materials. After mixing with water, it has the properties of large fluidity, early strength, high strength, and micro-expansion. It can be widely used in anchoring of anchor bolts, secondary grouting of equipment, and reinforcement of...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06C04B111/34C04B111/70
CPCC04B28/04C04B14/06C04B2111/346C04B2111/70C04B2201/50C04B18/08C04B18/141C04B16/0633C04B24/24C04B24/10C04B2103/50C04B2103/0068C04B24/383C04B7/32C04B22/143C04B22/064C04B22/145
Inventor 张培育张景伟张慎立易鹏艾冬明
Owner 经纬建材有限公司
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