KR900005975B1 - Method for producing kaolin-bricks - Google Patents

Abstract

The kaolin bricks are prepared by the stages of mixing 80 wt.% admixture and 20 wt.% mixing solution, moulding and drying. The admixture consists of 85-90 wt.% kaolin powder of no more than 0.01-1 mm particle size, 4-6 wt.% cement having C3S of at least 50% and 0.01-0.02 wt.% at least one of Al, Zn and CaC2. The mixing solution contains 0.03-0.06 wt.% air-entraining agent e.g. Na2SiO3, 0.03 wt.% Na2SiF6 and 0.06 wt.% CaCl2 as waterproofing agent to the weight of cement.

Description

Kaolin Brick Manufacturing Method

The present invention relates to a kaolin brick manufacturing method used as a building insulation brick.

Until now, various methods have been known as shown in Korean Patent Publication Nos. 201,244, 336,429, 480, 510, 1014,1190 and 1210 for the manufacture of bricks, but the method of using kaolin as pozzolan has not been proposed, No improvement in thermal insulation is mentioned.

The present invention is different from the manufacturing method described in each of the above patent publications, and the kaolin component is used as pozzolanic, and as an AE agent for dispersing and dispersing bubbles therein, surfactants, vinzolesine, and Darex Furex New -Add 20% aqueous solution such as LES to 0.03-0.06% by weight of cement.As a foaming agent, Al, PE foaming agent, CaC ₂ and other powders are 0.01-0.02 to cement and 1% Na ₂ SiO ₃ aqueous solution as hardener and waterproofing agent. Na ₂ SiF ₆ is added to 0.03% of CaCl _{2 and} 0.06% of cement to prepare kaolin brick with excellent heat insulation and waterproofness.

Pozzolane refers to a siliceous or aluminosilicate material which reacts with water and cures in the presence of lime. Diatomaceous earth, allophene, halosite, bentonite, etc. are also reactive as other cement materials, but they are not usually used because they increase the amount of dough. Artificial pozzolans include combustible clay, roll ash, and the like.

Pozzolans with a high alumina content tend to quench the cement and impair chemical resistance.

It is an object of the present invention to use a kaolin as pozzolanic and sufficiently mix a small amount of cement having a C ₃ S of 50% or more thereto, and to provide an aqueous solution of Na ₂ SiO ₃ solution A, E. It is to prepare a high-strength kaolin brick having excellent heat insulation and waterproofing properties, in particular, deodorizing properties by appropriately adding a blowing agent, a roughening agent, a waterproofing agent, and the like.

The present invention further relates to the manufacture of bricks and panels for use as building materials using such kaolin.

The present invention will be described in detail as follows, and the scope of the present invention is not limited to such an implementation.

1.The particle size should be 0.01-0.1mm, mix 85-90% of the ground kaolin powder and 4-6% of cement of C ₃ S 50%, and add 0.01-0.02% of Al, Zn or CaC ₂ powder to it. Mix enough.

2. Mix one component of AEWP with CaCl ₂ , NA ₂ SiF ₆ to 0.03-0.06% with respect to cement, add 1% aqueous solution of Na ₂ SiO _{3, and} mix thoroughly.

To 80% of the mixture in step 3.1, 20% of the mixed solution in two steps is added, kneaded sufficiently and dried after molding. Kaolin brick manufacturing method according to the present invention is described as follows by the second embodiment.

Example 1

Grind the kaolin and add and mix 85-90% of it and 4-6% of cement of C ₃ S50%, add CaC ₂ powder 0.01-0.02% as a blowing agent, and mix it sufficiently. _The kaolin bricks cured by adding ₂ and Na ₂ SiF ₆ and a curing agent Na ₂ SiO ₃ aqueous solution, respectively, were sufficiently kneaded and molded. The results were as follows.

As can be seen in Table 1, the kaolin brick of the present invention has an excellent waterproofing and insulating effect than conventional sand brick.

The reason is that it does not bend like a brick using a conventional clay, and by direct molding and drying by adding a waterproofing agent and the like, the waterproofing and heat insulating effect is excellent, and the experimental results have been found to be particularly excellent in deodorizing effect.

In addition, the kaolin brick of the present invention has the advantage that it is not broken, easy to perforate and the color can be adjusted.

In particular, although the life of the conventional sand brick is about 20 to 30 years, the kaolin brick of the present invention is almost semi-permanent life. Therefore, its use as a building material is expected in the future.

Claims (2)

A kaolin brick manufacturing method characterized by mixing kaolin and cement containing 50% or more of C ₃ S at 90: 5, and curing by appropriately adding and kneading a dispersant, a release agent, a waterproofing agent, and a curing agent. The method of manufacturing kaolin panel according to claim 1, wherein the kaolin and cement containing 50% or more of C ₃ S are mixed at 90: 5, and curing is performed by appropriately kneading a dispersant, a foaming agent, a waterproofing agent and a curing agent.