Continuous method for manufacturing material which contains hydraulic binder and which is lightened by expansion

A hydraulic binder, peroxide technology, used in mixing methods, chemical instruments and methods, ceramic products, etc.

Inactive Publication Date: 2014-10-15
SAINT GOBAIN WEBER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012]The disadvantage of these methods is the waiting time before application due to the expansion of the material

Method used

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  • Continuous method for manufacturing material which contains hydraulic binder and which is lightened by expansion
  • Continuous method for manufacturing material which contains hydraulic binder and which is lightened by expansion
  • Continuous method for manufacturing material which contains hydraulic binder and which is lightened by expansion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] A dry mortar composition comprising the following components was mixed with a peroxide decomposition catalyst precursor.

[0086] 88.75% Portland cement CEM 52.5 R (Heidelberg Cement, Schelklingen)

[0087] 10% glass microspheres (Q-CEL 7014, Potter Industries LLC)

[0088] 1% manganese sulfate monohydrate (catalyst precursor)

[0089] 0.2% cellulose ether (DOW 267)

[0090] 0.05% surfactant (Hostapur OSB).

[0091] according to Figure 1A Carry out the method. The dry mortar composition and catalyst precursor mixture ( 12 ) and mixing water are each fed into a mixing pump ( 11 ) of the M-Tec M100 type at a flow rate of 100 kg / h. The resulting blended composition was pumped continuously at a pumping flow rate of 200 kg / h.

[0092] The fresh mortar leaving the spray nozzle had a density of 920 g / l without the addition of the peroxide-based solution.

[0093] The line containing 8.5% aqueous hydrogen peroxide solution was opened and introduced continuously at the e...

Embodiment 2

[0096] A dry mortar composition comprising the following components was mixed with a peroxide decomposition catalyst precursor.

[0097] 84% white cement (CPA CEM1 52.5N Calcia)

[0098] 15% Perlite 0 / 1

[0099] 0.7% manganese acetate (catalyst precursor)

[0100] 0.25% cellulose ether (Tylose MH100000P6)

[0101] 0.05% surfactant (Ufapore TP808).

[0102] according to Figure 2ACarry out the method. The dry mortar composition (21 kg of dry mortar and 30 kg of water) to which the catalyst precursor had been added was mixed in a batch mixer (M-Tec CM) separate from the spraying apparatus. The paste thus obtained was fed into a M-Tec P20 pump and pumped at a flow rate of 540 kg / h.

[0103] The fresh mortar leaving the spray nozzle had a density of 815 g / l without the addition of the peroxide-based solution.

[0104] The line containing 17% aqueous hydrogen peroxide solution was opened and introduced continuously at the end of the nozzle at the level of the static mixer at...

Embodiment 3

[0107] Lightweight dry mortar compositions containing expanded polystyrene (Weber.Aislone) and a mixture of Portland cement with slaked lime as hydraulic binder are mixed in a continuous mixing pump of the MTec Duo-mix type with a quantity of water for mixing .

[0108] Prepare a solution containing 50% of water, 5% of manganese acetate, 5% of sulfuric acid and 40% of 35% hydrogen peroxide solution (pH is maintained at 4).

[0109] according to Figure 1A Carry out the method. The pump has a pumping capacity of 22 liters / minute.

[0110] The fresh mortar leaving the spray nozzle had a density of 560 g / l without the addition of the peroxide-based solution.

[0111] When the line containing the aqueous hydrogen peroxide solution was opened and introduced into the outlet line of the mixing pump at a flow rate of 20 kg / h, the density of the mortar extracted from the nozzle decreased to 400 g / l.

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Abstract

The present invention relates to a method for applying, onto a substrate, mortar which contains a hydraulic binder and which is lightened by expansion, said method implementing a pump spray device including a mixing pump, an outlet pipe for said pump, and a spray nozzle attached to the outlet pipe, and including the following steps implemented continuously in the device: a) mixing an aqueous solution, containing a peroxide pore-forming agent, with a composition including at least one hydraulic binder, in the presence of a catalyst for the breakdown of the pore-forming agent, said binder being selected from among, or being a combination of: cement(s), in particular Portland cement; a pozzolan cement mixture optionally including fly ash, blast-furnace slag, silica fumes, and / or natural or calcined or synthetic pozzolans; aluminous cement; sulfoaluminous cement; belite cement; as well as the mixtures thereof, and / or hydraulic lime; and, immediately after, b) continuously spraying the resulting lightened mixture.

Description

technical field [0001] The invention relates to the field of lightweight mortars (mortiers allégés) for walls (façade) and floors (sol). It relates more particularly to the continuous application of mortiers based on lightweight materials via pumping, to an application device for said method and also to the use of this device. [0002] The mortar deposited in layers on the walls has the triple function of waterproofing, smoothing said walls and aesthetically finishing them. They mainly consist of mortar mixed with water and deposited in thick layers before hardening and drying. [0003] Mortars for floors enable the manufacture of screed substrates, especially self-leveling floor screed substrates. [0004] The deposition of the mortar can especially be carried out by pneumatic spraying with a mortar pump. [0005] Lightweight mortars compatible with spraying are currently widely used. Applying by spraying makes it possible to deposit layers with a thickness of at least a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02B01F3/12B05B13/00B05C5/00
CPCC04B2111/00146C04B28/02B28C5/026C04B38/02C04B14/28C04B22/06C04B22/066C04B22/068C04B14/30C04B14/304C04B14/307C04B14/308C04B14/309C04B24/14
Inventor H.泽林格W.迈尔C.达西尔瓦M.阿尔伯特
Owner SAINT GOBAIN WEBER GMBH
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