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

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

Inactive Publication Date: 2014-03-26
李国辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problems of rough surface, low strength and gaps of concrete permeable bricks in the above-mentioned prior art, which are easily blocked by dust and impermeable; high cost and low wet strength of sand-based grease-bonded whole-body permeable bricks; and high cost and gaps of ceramic permeable bricks. To solve problems such as easy blockage and impermeability, develop a composite brick with low cost, simple molding process, high strength, beautiful surface, and fast water permeability, and a pre-coated new sand that can make the composite brick achieve high strength and its preparation method

Method used

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

Examples

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preparation example Construction

[0019] The preparation method of the pre-coated new sand provided by the present invention includes: heating the natural sand to 200-250°C, and then cooling down, when the temperature drops to 190±10°C, adding a coupling agent and a pre-coated resin under stirring, The stirring time is 60 ± 20 seconds, so that the pre-coating resin and coupling agent are coated on the natural sand. When pigments are needed, add pigments and stir for 30 + 10 seconds. Add curing agent and stir; when the material 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 contains pre-covered new sand and fabric adhesive, and the concrete bottom layer contains aggregate, cement, fly ash, splash water , agent and water.

[0021] Preferably, the th...

Embodiment 1

[0034] 1. Preparation of pre-coated new sand

[0035] Heat 200kg of aeolian sand (particle diameter 0.425-0.212mm) to 210° and pour it into the FS1612 sand mixer (Qingdao Wuyang Casting Machinery Co., Ltd.), and add hydrogenated bisphenol A ring when cooling to 190°C Oxygen resin (brand: AL-3040, Yantai Oliver Huagong Co., Ltd.) 1 kg and γ-glycidyl ether propyl trimethoxysilane 10 g stirred for 40 seconds; added 500 g of iron oxide red and stirred for 30 seconds; added modified Alicyclic polyamine curing agent A (isophordiamine, 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...

Embodiment 2

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

[0046] In addition to changing the hydrogenated bisphenol A epoxy resin in Example 1 into 2 kilograms, changing γ-glycidyl ether propyl trimethoxysilane into 20 grams, and changing the modified alicyclic polyamine curing agent into 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 a mixer; weigh the adhesive containing 2.7 kg of QXEP-1 resin and 0.8 kg of qxepg-1 curing agent and put it 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.

[0050...

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Abstract

The invention provides pre-coated new sand, a preparation method thereof and a composite permeable brick. The pre-coated new sand comprises natural sand, pre-coated resin, a pre-coated curing agent, a coupling agent and a lubricating agent, wherein the pre-coated resin is weather-resistant alicyclic epoxy resin; the pre-coated curing agent is modified alicyclic amine. The composite permeable brick comprises a sandy surface layer and a concrete bottom layer, wherein the sandy surface layer contains pre-coated new sand and a fabric adhesive; the pre-coated new sand is the pre-coated new sand provided by the invention; the concrete bottom layer comprises a crushed stone aggregate, cement, coal ash, a water reducer and water. According to the pre-coated new sand provided by the invention, the composite permeable brick prepared by the pre-coated new sand has the characteristics of being high in strength and good in water permeability, and the composite permeable brick is simple in molding technology and low in cost.

Description

technical field [0001] The invention relates to a pre-coated new sand and a preparation method thereof, and also relates to a composite permeable brick comprising the pre-coated new sand. Background technique [0002] With the rapid development of the economy, more and more urban surfaces are covered by dense and "heat-storing" asphalt, concrete, rock or artificial stone, resulting in the enlargement and intensification of the urban "heat island" phenomenon. The use of permeable bricks enables rainwater to quickly infiltrate into the ground to replenish groundwater due to its good water permeability, air permeability and water retention, thus ensuring the effective use of precious fresh water resources. Permeable bricks can not only solve the problem of rainwater accumulation and flooding and relieve the flood discharge pressure of urban drainage systems in rainy days, but also adjust air humidity, water vapor circulation, reduce noise and dust, and suppress the urban "heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14
Inventor 李国辉
Owner 李国辉
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