JPS5815457B2 - How to make brick blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a brick block having the appearance of a set of bricks.

Traditionally, red bricks have been used for landscaping work, such as curbs for flower beds, tree-planting zones, and stone walls for plazas, etc. However, red bricks are brittle and freeze easily in winter, and their small shape makes construction difficult. The downside was that the construction costs were high.

The present invention aims to solve these drawbacks and provide a method for producing brick blocks that exhibit a color similar to red bricks, have excellent strength, do not freeze in winter, are easy to construct, and can shorten the construction period. be.

Color cement mixed with 7 to 11% Bengara (same weight) to normal cement, and 45% brick powder to fine aggregate.
~55% fine aggregate mixed with coarse aggregate, fine aggregate ratio 2
After kneading the mixture at a ratio of 5 to 30% and a water-to-cement ratio of 45 to 53%, the mixture is molded in a block form in which multiple bricks are lined up and there are joints between the bricks. A method for manufacturing a brick block, characterized by coloring the joints of the brick block.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The brick block of the present invention uses the following concrete raw materials.

Add color cement to 350% of the total amount of concrete raw materials.
~460~kg/m3.

This color cement is made by adding Bengara as a pigment to ordinary cement (Portland) at a ratio of 7 to 11%, preferably 9%, and mixing the mixture with a mixer for about 20 minutes until the light is released.

If the mixing ratio of Bengara is less than 7%, the desired brick color cannot be obtained sufficiently due to the combination with aged ginger powder described below.

Moreover, if it exceeds 11%, the color becomes dark and the natural color is damaged.

Furthermore, it has been found that the combination of Bengara with ordinary cement, as in the present invention, produces a more astringent brick color than the combination of Bengara with white cement.

Next, add coarse aggregate to the total amount of concrete raw materials at a rate of 1,200~
It is blended at a rate of 1300 kg/m3.

The size of this coarse aggregate is small (with a particle size of 20 mm or less).

This is because if the particle size is larger than this, compaction during molding will be poor and the correct edge angle will not be obtained, and there is a risk that cavities will occur on the block surface.

Next, add fine aggregate to the total amount of concrete raw materials at a rate of 400~
Blend at a ratio of 500 kg/m3.

This fine aggregate is a mixture of about half of each, i.e. 45 to 55%, of a lightweight aggregate such as an artificial light aggregate (trade name Asanolite Sand) and old brick powder.

If the aged ginger powder is less than 45%, the color will be pale and a large amount of artificial light and soft powder will be required, increasing the cost, and if it is more than 55%, the strength will be low.

Mixing aged Nga powder in this proportion is necessary for making wigs where the natural color unique to red bricks cannot be obtained with just the pigment Bengara.

In addition, the reason why artificial light and soft powder is used in such proportions is that the particles of the specified amount of old ginger powder used to produce the natural color are fine (FMl, about 8), and the required slump of the concrete is achieved. This is because the brick powder requires a large amount of water, so the particle size is adjusted using artificial light and soft brick powder that has relatively low color and other physical properties, and the purpose is to reduce weight and improve strength.

Fine aggregate ratio (ratio of fine aggregate to coarse aggregate) is 25-30
%.

This is because the color cement particles are particularly fine, so the ratio is particularly lower than the 37-58% in normal concrete.

This is because if the fine aggregate percentage is less than 25%, the strength will be high up to a certain limit, but cavities will easily occur, and if it is more than 30%, defects such as low strength and brittleness will occur.

The water-cement ratio (W/c) is 55 to 40%.

This is because if it is more than 55%, the strength becomes low, and if it is less than 40%, cracks are likely to occur and it is not economical.

In the present invention, the above-mentioned compounded material is molded in the following manner.

First, a predetermined amount of the ordinary cement and the valve stalk are mixed in a mixer for about 20 minutes, and the valve stalk made of fine particles is sufficiently mixed with the ordinary cement to obtain a colored cement.

Next, the colored cement, coarse aggregate, fine aggregate, and water are measured in the predetermined proportions and mixed in a mixer.

After kneading, the mixture is poured into a mold, vibratory compacted, steam cured, and then demolded.

As shown in FIGS. 1 and 2, the demolded block 1 is painted at the joints 2 with cement color or white, and then stored in a storage area for curing.

The formwork used is an iron formwork in which joint rods are welded to the inner surface of the formwork so that the joint parts protrude and are continuous.

EXAMPLE The results of the compressive strength test (curing in hot water) for each of Tests A to G of the above formulations 41.2 and 3 are shown in FIG.

In both cases, data was obtained that exceeded the design strength.

However, since the actual product does not require watering, the strength is estimated to be about 20% lower than the actual product cured in hot water.

For general uses such as curb stones of flower beds, blend No. 1~
Mixing No. 2 is considered to be sufficient, and in the case of specific designated construction work (for example, by government agencies), Mixing No. 3 is appropriate.

Moreover, the color was almost a natural brick red color.

As described above, according to the present invention, the drawbacks of conventional red bricks are solved, the color is similar to that of red bricks, the strength is excellent, and any strength can be manufactured, and it does not freeze even in winter.
Moreover, since the product is large, construction is easy and the construction period can be shortened.

Therefore, product cost can be reduced. It goes without saying that blocks of several sizes can be manufactured and provided as needed.

[Brief explanation of the drawing]

1 and 2 are perspective views of a brick block according to the present invention, and FIG. 3 shows test data of the same block.

Claims (1)

[Scope of Claims] 1. Colored cement mixed with 7 to 11% of normal cement (same weight below), fine aggregate mixed with 45 to 55% of brick powder to fine aggregate, and coarse bone. After kneading the materials with a fine aggregate ratio of 25 to 30% and a water-cement ratio of 45 to 53%, a block with a plurality of bricks arranged and joints between the bricks is prepared. A method for manufacturing a brick block, which comprises forming the brick block using a formwork and coloring the joints of the formed brick block. 2. The method for manufacturing a brick block according to claim 1, wherein the fine aggregate is a lightweight fine aggregate that approximates brick color.