JPS61191578A - Perlite construction material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is mainly used in the field of building material products by combining mineral pearlite, particularly obsidian pearlite, with cement materials.

(Prior art) Obsidian raw stone is called unfoamed pearlite, while the crushed and calcined one is called expanded pearlite, and compared to expanded pearlite such as perlite, the inside of each particle is under reduced pressure at room temperature. There is a big difference in the condition, which is why the insulation properties, sound absorption properties, and rope resistance are extremely excellent. Taking advantage of this property, it is used in concrete, heat-insulating mortar, wall materials, coating materials, etc. All of these are mixed with cement together with aggregates such as sand, but obsidian foamed vanillaite (hereinafter referred to as perlite of this invention) is not porous due to its spongy shape, but is a single particle. As mentioned above, the inside is in a reduced pressure state, that is, the inside is a spherical body in a reduced pressure state, so if sand or the like is mixed in when bonding these particles together with cement, there will be problems with homogenization due to the difference in specific gravity and the contact surface. was there.

(Problems to be Solved by the Invention) The present invention aims to uniformly bond the spherical fine particles of pearlite to each other with cement, and to form closed cells sealed by the cement between the fine particles. .

(Means for solving the problem) This is achieved by hydrating the pearlite of this invention and cement and mixing them with high speed stirring. , the outer shape is an irregular spherical body, the inside is a glass-like aggregate of independent bubbles, and the surface is water-absorbing.
When cement and water are mixed and stirred at high speed, the particles come into direct contact with each other at many contact points, and independent air bubbles are formed between the particles due to water absorption on the surface of the particles.Moisture is removed by curing, and above all, cement bonding occurs. do. A homogeneous particle conjugate is then produced.

(Example) Particle size 2.5-5% low wI 633% 37% particle size 0
．． Pour 200, C1/ of 6-1.21111 into a mixture of Portland cement 453.5'9, water 272.119, and foaming agent 1.131, and mix with a high-speed stirrer for 1 minute at about 500 times/min. Knead at a speed of After the crosstalk is completed, it is poured into a mold on a table vibrator prepared in advance and vibrated. Then, it is removed from the mold and allowed to naturally cure to form a disk containing closed cells. The volume ratio of pearlite and cement in this invention is 5.75:1.0.
corresponds to

(Effects of the invention) According to this invention, the product is made of perlite and cement, is lightweight (specific gravity 0.7' = i/l), has high insulation, sound and fireproof properties, and has extremely low water absorption), so high strength is not required. Wall materials/
Suitable for ceiling materials, roof base materials, floor materials, etc.

Claims (1)

[Claims] A pearlite building material made by stirring and mixing foamed obsidian pearlite and cement liquid at high speed to form closed cells sealed with cement between foamed pearlite powder.