Outer wall heat preservation dry-powder mortar for construction

An external wall thermal insulation and dry powder mortar technology is applied in the field of adhesives for construction, which can solve the problems of low loss and the like, and achieve the effects of low loss, less material and easy transportation.

Inactive Publication Date: 2007-09-19
宋连伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a thermal insulation dry powder mortar for external walls of buildings with good cr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1 The raw materials were taken according to the following weight ratio:

[0030] Ordinary Portland cement 600kg, nano-grade heavy calcium carbonate 250kg, Jilin Jilong ash calcium plant produces 150kg gray calcium carbonate, Hangzhou Tianchuang Chemical Technology Co., Ltd. manufactures redispersible rubber powder 20kg, hydroxypropyl methylcellulose 2kg, The technical quality cellulose is 1kg, and Tianjin Siteng Company produces polypropylene fiber 1kg. The above-mentioned raw materials are evenly mixed to obtain the external wall thermal insulation dry mortar for buildings.

[0031] The dry powder mortar is used for coating tests on the outer walls of ordinary houses. The dry powder mortar is taken and water is added to make a paste with good solubility. The coating thickness is about 1.0cm, which is half the thickness of traditional mortar. The initial adhesion is high, there is no sagging phenomenon, and there is no cracking, bulging and falling off after long-te...

Example Embodiment

[0032] Example 2 The raw materials were taken according to the following weight ratio:

[0033] Ordinary high-alumina cement 500kg, 800 mesh heavy calcium carbonate 300kg, Jilin Jilong ash calcium factory produces gray calcium carbonate 100kg, commercially available polyvinyl alcohol redispersible rubber powder 25kg, hydroxypropyl carboxymethyl cellulose 4kg, wood Cellulose 0.5kg, Tianjin Si Teng Company produces polypropylene fiber 1.5kg. The above-mentioned raw materials are evenly mixed to obtain the external wall thermal insulation dry mortar for buildings.

[0034] The dry powder mortar has good workability, water resistance, water retention, no sag and no peculiar smell.

Example Embodiment

[0035] Example 3 The raw materials were taken according to the following weight ratio:

[0036] Ordinary Portland cement 700kg, 2500 mesh heavy calcium carbonate 200kg, Shouchang new ash calcium plant produces 200kg gray calcium carbonate, commercially available ethylene-vinyl acetate copolymer type redispersible rubber powder 15kg, hydroxyethyl methyl Cellulose is 2kg, lignocellulose is 1.5kg, and Tianjin Siteng Company produces polypropylene fiber 0.5kg. Mix the above-mentioned raw materials evenly to obtain the external wall thermal insulation dry mortar for construction. It has good crack resistance, excellent elasticity and flexibility, no cracks, hollowing and falling off on the surface, and the service life is 2 times that of existing cement mortars. Times more.

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PUM

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Abstract

An out wall heat preservation dry powder sand pulp for architecture is characterized in that it is made up of the raw materials as following weight shares: cement 500-700, heavy calcium carbonate 200-300, gray calcium carbonate 100-2200, re-dispersed gelatine powder 15-25, hydroxypropyl methylcellulose 2-4, lignocellulose 0.5-1.5, polypropylene fibre 0.5-1.5. The out wall heat preservation dry powder sand pulp for architecture adopts the combination of the cement binder and polymer binder with a good crack resistance, a good elasticity and flexibility and a long service life. The face work will not appear crack, knob and abscission. It can be constructed in lamina, thus it reduces the material and the waste, meanwhile, it improves the life of the building and saves the energy of about 60% compared to the conventional sand pulp and increases the working efficiency. The producing process and the using process is innocuous, flavourless, safe, healthful, easy to transport, waterproof, water conservation, not sagging and have the water as the solvent.

Description

technical field [0001] The invention belongs to the field of building adhesives, and in particular relates to a building external wall thermal insulation dry powder mortar used for building external walls. Background technique [0002] Traditional mortar is a mixture of dry powdered cement, river sand, cementitious materials, chemical additives, etc., which can be used directly as long as you add water in a certain proportion and stir well during operation. Due to the single nature of the raw material of the mortar, during the setting and hardening process, water evaporates to form more pores, and at the same time, the shrinkage performance of the cement-based hardened body and polystyrene board and other insulation boards is quite different. In the uneven distribution of high stress, the stress is in a thermodynamically unstable state and tends to spontaneously distribute uniformly. Under the action of the outside world, wall cracking, sound water and plastering layer void ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/06C04B14/28C04B16/06C04B24/38C04B24/26C04B103/44
CPCC04B2111/28C04B2111/343C04B28/02
Inventor 宋连伟
Owner 宋连伟
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