Pre-coated sand, preparation method thereof and composite water permeable brick

A pre-coating and sand technology is applied in the field of pre-coated sand and its preparation, which can solve the problems of low strength, easy clogging of gaps, water-tightness, high cost, and achieve the effects of simple molding process, good water permeability and low cost.

Active Publication Date: 2012-06-20
李国辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect that this new type of material has on making bricks with strong barrier properties while also being easy for them to be formed into shapes quickly without expensive equipment or complicated processes.

Problems solved by technology

This patented technical solution describes various types of porous brick products made from different raw material compositions such as silica/cement, aluminum oxide hydrudone, calcium carbonate, magnetic iron borosilicate, fused salt, and polymer bonded together. These solutions aim to simplify construction processes while maintaining environmental benefits over existing ones.

Method used

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  • Pre-coated sand, preparation method thereof and composite water permeable brick
  • Pre-coated sand, preparation method thereof and composite water permeable brick
  • Pre-coated sand, preparation method thereof and composite water permeable brick

Examples

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preparation example Construction

[0019] The preparation method of the pre-coated sand provided by the present invention comprises: heating the natural sand to 200-250°C, and then lowering the temperature; when the temperature drops to 190±10°C, adding coupling agent and pre-coated resin under stirring, stirring The time is 60±20 seconds, so that the pre-coated resin and coupling agent are coated on the natural sand; when the pigment is needed, add the pigment at this time and stir for 30±10 seconds; add the curing agent and stir; when the material When it is about to agglomerate, add lubricant and continue stirring until the material is completely dispersed; cool the material to ambient temperature.

[0020] The composite permeable brick provided by the present invention includes a sand-based surface layer and a concrete bottom layer; the sand-based surface layer includes pre-coated sand and fabric adhesive, and the pre-coated sand is the pre-coated sand provided by the present invention, so The concrete bott...

Embodiment 1

[0034] 1. Preparation of pre-coated sand

[0035] Heat 200kg of aeolian sand (particle diameter 0.425-0.212mm) to 210°C and pour it into the FS1612 sand mixer (Qingdao Wuyang Casting Machinery Co., Ltd.), and add hydrogenated bisphenol A epoxy when cooling to 190°C Resin (brand name: AL-3040, Yantai Olive Chemical Co., Ltd.) 1 kg and γ-glycidyl ether propyl trimethoxysilane 10 g stirred for 40 seconds; added iron oxide red 500 g stirred for 30 seconds; added modified fat Cyclic polyamine curing agent A (isophorone diamine, neopentyl glycol diglycidyl ether and acrylonitrile molar ratio is 1: 0.3: 0.4) 150 grams of stirring, when the material starts to agglomerate, add 100 grams of hard Calcium fatty acid is stirred and solidified for 180 seconds, cooled and sieved to obtain pre-coated aeolian sand.

[0036] 2. Preparation of permeable bricks

[0037] (1) Fabric ingredients:

[0038] Weigh 50 kilograms of the red pre-coated aeolian sand prepared above and put it into a QXH-1...

Embodiment 2

[0045] 1. Preparation of pre-coated sand for coloring treatment

[0046] In addition to changing the hydrogenated bisphenol A epoxy resin in Example 1 to 2 kilograms, changing γ-glycidyl ether propyl trimethoxysilane to 20 grams, and changing the modified alicyclic polyamine curing agent to 300 gram, and before adding the modified alicyclic polyamine curing agent, add 500 grams of iron oxide red and stir for 30 seconds, prepare red pre-coated aeolian sand according to the same method as in Example 1.

[0047] 2. Preparation of permeable bricks

[0048] (1) Fabric ingredients:

[0049] Weigh 50 kg of the red pre-coated aeolian sand prepared above and put it into the mixer for stirring; weigh the adhesive containing 2.7 kg of QXEP-1 resin and 0.8 kg of QXEPG-1 curing agent and put them together and stir evenly , add to the mixer equipped with pre-coated aeolian sand and continue to stir, and stop stirring after the adhesive and red pre-coated aeolian sand are stirred evenly. ...

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Abstract

The invention provides pre-coated sand, a preparation method of the pre-coated sand and a composite water permeable brick. The pre-coated sand comprises natural sand, pre-coating resin, pre-coating curing agent, coupling agent and lubricating agent. The pre-coating resin is weather-resistant alicyclic epoxy resin, and the pre-coating curing agent is modified alicyclic polyamine. The composite water permeable brick comprises a sand foundation surface layer and a concrete bottom layer; the sand foundation surface layer comprises pre-coated sand and surface material binding agent; and the concrete bottom layer comprises aggregate, cement, fly ash, water reducing agent and water, wherein the pre-coated sand is that of the present invention. The composite water permeable brick made of the pre-coated sand has the characteristics of high strength and good water permeability, the molding technology of the composite water permeable brick is simple, and the cost is low.

Description

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Claims

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Application Information

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Owner 李国辉
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