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New roofing tile with enhanced surface durability and processes for manufacturing the same

A technology of tile and hydraulic binder, which is applied in the direction of roofing, roofing and roof covering layer using tile/slate tile, and can solve the problems of high mechanical strength and so on.

Active Publication Date: 2009-03-18
MONIER TECHN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem here is to maintain a high mechanical strength, which is not an important property for the intended application of the invention

Method used

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  • New roofing tile with enhanced surface durability and processes for manufacturing the same
  • New roofing tile with enhanced surface durability and processes for manufacturing the same
  • New roofing tile with enhanced surface durability and processes for manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Component Example 1 Fine sand, 0-0.6mm 130 Calcium aluminate cement 100 fly ash 20 pigment a 3.0 super plasticizer a (Premiafluid 194) 0.03 rheology enhancer a (Mowilith VDM618) 0.30 retarder a (citric acid) 0.10 Defoamer b (Serdas GBR) 0.15 water 36.0

[0064] According to solid content a or active ingredient b express.

[0065] The specific instance is according to figure 1 The coextrusion method shown was carried out. The slurry was mixed for 2-5 minutes using the shear mixer.

[0066] Table Properties of the new slurry of Example 1.

[0067] Slump at 0 minutes (mm) 155 Slump after 45 minutes (mm) 165 Slump after 75 minutes (mm) 160 Air content (%) 4.8％

[0068] The slurry is then pumped using an eccentric screw pump operating under standard conditions and delivered through pressurized piping to a metering hopper. Extrusion standard r...

Embodiment 2

[0070] Component Example 2 Fine sand, 0-0.6mm 130 Calcium aluminate cement 100 fly ash 20 pigment a 3.0 plasticizer a (melamine type) 0.20 rheology enhancer a (Mowilith VDM618) - retarder a (citric acid) - Defoamer b (Serdas GBR) - water 38-40

[0071] According to solid content a or active ingredient b express.

[0072] Using a method similar to that shown in Example 1, the tiles of Example 2 were produced.

[0073] image 3 is a scanning electron micrograph (SEM) of a cross-section of the tile of Example 2 after 10 years of natural weathering in typical western European climate conditions. SEM analysis was performed by backscattered electron (BSE) mode using 12 kV, 1 nA (measured with a Faraday cup) and 12 mm operating distance.

[0074] see image 3 , AH is naturally formed during natural weathering 3 dense protective layer. This layer (approximately 50 microns thick) acts...

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Abstract

The invention provides a roofing tile comprising: (a) a substrate; and (b) a coating disposed on said substrate, said coating resulting from hydration and hardening of a mixture comprising a hydraulic binder, the hydraulic binder comprising at least 60% by weight of a source of calcium aluminate and no more than 1% by weight of sulfate.

Description

field of invention [0001] The present invention relates to new roof tiles with improved surface durability, especially smoothness and acid corrosion resistance. The invention also relates to a method for the manufacture of this new type of roof tile. Background of the invention [0002] The chemical symbols for cement that will be used below are: C=CaO; A=Al 2 o 3 ; S = SiO 2 ;s=SO 3 , H=H 2 O. [0003] WO-A-0172658 discloses a hydraulic binder for forming non-weathered cement bodies comprising a source of calcium aluminate, a source of calcium silicate, a source of sulphate and a source of reactive silica, inter alia comprising 10 - 49% by weight of active silica source (based on the weight of the dry hydraulic binder), the balance comprising 40-90% by weight of aluminate selected from calcium sulfoaluminate cement or cement clinker A source of calcium containing at least 25% alumina or a C / A ratio of less than 3, 5-55% by weight of Portland cement or cement clinker ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04D1/04E04D1/16C04B28/06C04B41/50C04B41/65
CPCC04B41/5081C04B28/04C04B7/32C04B28/06C04B2111/00129C04B41/009E04D1/16C04B2111/00586C04B2111/00594C04B2111/1018C04B41/65Y10T428/25Y10T428/259Y02W30/91C04B14/06C04B14/28C04B18/08C04B2103/10C04B2103/20C04B2103/32C04B2103/44C04B2103/50C04B2103/54C04B41/508C04B41/00C04B28/02
Inventor A·德雷克斯勒J·克莱因F·伊兹奎艾勒J·陈E·弗德林
Owner MONIER TECHN CENT