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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 crack resistance and no cracks, hollows or falling off on the plastered surface. Defects of Existing Dry Powder Mortar and Traditional Mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 Get each raw material by following weight ratio:

[0030] 600kg of ordinary Portland cement, 250kg of nano-scale heavy calcium carbonate, 150kg of lime calcium carbonate produced by Jilin Jilong Ash Calcium Factory, 20kg of redispersible rubber powder manufactured by Hangzhou Tianchuang Chemical Technology Co., Ltd., 2kg of hydroxypropyl methylcellulose, 1 kg of technical cellulose, 1 kg of polypropylene fiber produced by Tianjin Si Teng Company. The above-mentioned raw materials are mixed evenly to obtain the dry powder mortar for thermal insulation of external walls of buildings.

[0031] The dry powder mortar was used to carry out the coating test on the exterior wall of ordinary houses. The above dry powder mortar was taken and added with water to make a paste with good solubility. Its application thickness is about 1.0cm, which is half of the thickness of traditional mortar. High initial adhesion, no sagging, no cracking, drumming and falling off aft...

Embodiment 2

[0032] Embodiment 2 Get each raw material by following weight ratio:

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

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

Embodiment 3

[0035] Embodiment 3 Get each raw material by following weight ratio:

[0036] 700kg of ordinary portland cement, 200kg of heavy calcium carbonate of 2500 mesh, 200kg of gray matter calcium carbonate produced by Shouchang new gray calcium factory, 15kg of redispersible rubber powder of commercially available ethylene-vinyl acetate copolymer, hydroxyethyl methyl Cellulose 2kg, lignocellulose 1.5kg, polypropylene fiber produced by Tianjin Si Teng Company 0.5kg. Mix the above raw materials evenly to obtain thermal insulation dry powder mortar for building exterior walls, which has good crack resistance, excellent elasticity and flexibility, no cracks, hollowing and falling off on the plastered surface, and the service life is 2 times that of existing cement mortar. more than double.

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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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