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About brick productiuon


1. Comparison of primal cost 
 
Investment in production of solid concrete bricks
Product
Quality
Price/unit (¥/t)
SUm
(¥/t)
Ratio
Notes
Explanations
Cement
50
300
15
8
405#
This ratio receives 220 bricks 240×115×53, , the strength 10 nano, weight – 2.85kg
Ashes
100
30
3
16
1-8mm Mixed material
Stone crumb
200
30
6
32
0.5-5 Mixture
Small ashes
150
30
4.5
24
 
Crushed stone
125
40
5
20
5-10mm
Electricity
/
0.08
1.5
/
one time
Water
/
1
0.1
/
One ton
Wage
/
/
5.5
/
one piece 0.025 ¥
The wages includes loading the materials into the mixer
Taxes
/
/
/
/
/
 
Profit
/
/
/
/
/
Management
/
/
/
/
/
Sale
/
/
/
/
/
Repair
/
/
/
/
/
Wear
/
/
/
/
/
Transportation
/
/
/
/
/
One piec0.185 ¥
Total
625kg
/
40.6
/
/

 Prime cost of production of concrete multiperforated bricks

Product
Amount
Price/pc (¥/t)
Sum
(¥ /t)
ratio
Notes
Explanations
Cement
50
300
15
10
405#
This ratio receives 160 bricks of size 240×115×90, the strength is 20 nano, weight – 3 kg
Ash
100
30
3
20
1-8mm Mixed materials
Stone crumb
150
30
4.5
30
 
Small ash
75
30
2.25
15
 
Broken stone
125
40
5
25
8*8mm
Electricity
/
0.08
1.5
/
One time
Water
/
1
0.1
/
For one ton
Wages
/
/
6.4
/
One piece - 0.04 ¥
Wages including loading of the materials into mixer
Taxes
/
/
/
/
/
 
Profit
/
/
/
/
/
Management
/
/
/
/
/
Sale
/
/
/
/
/
Repair
/
/
/
/
/
Wear
/
/
/
/
/
Transportation
/
/
/
/
/
one pc 0.231 RMB
Total
500kg
/
37.25
100
/

 Prime cost of production of concrete hollow bricks

Product
Quantity
Price/pc (¥/t)
Sum
(¥ /t)
Ratio
Notes
Explanation
Cement
50
300
15
10
325#
 
Ash
100
30
3
20
1-8mm Mixed materials
Stone crumb
150
30
4.5
30
 
Small ash
75
30
2.25
15
 
Broken stone
125
40
5
25
8*8mm
Electricity
/
0.08
1.5
/
One time
Water
/
1
0.1
/
For one ton
Wage
/
/
6.4
/
One pc 0.10 ¥
The wages includes loading of materials to the mixer
Taxes
/
/
/
/
/
 
Profit
/
/
/
/
/
Management
/
/
/
/
/
Sale
/
/
/
/
/
Repair
/
/
/
/
/
Wear
/
/
/
/
/
Transportation
/
/
/
/
/
One piece 0.755 ¥
Total
         

 Strength of blocks. Requirement for concrete resistance force
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2. Samples of products

The line produces red kilned bricks, wall blocks, curbstones and stone blocks, no re-adjustment of the equipment is required
Max brick size is – 1200х250х300 mm. Standard brick size is – 240х115х53 mm. The equipment can be readjusted to any intermediate sizes

In production of hollow bricks, the ratio of standard brick/hollow brick is 4/1. 
This means productivity 80 000 standard brick/shift and 20 000 hollow brick/shift.

SIde line products:
240 х 115 х 53 мм, solid bricks
240 х 115 х 90 мм, blind hole bricks, cavities: 26% 26%
240 х 115 х 115 мм, Blind hole bricks, cavities: 26%
240 х 175 х 115 мм, Blind hole bricks, cavities: 26-30%
240 х 190 х 115 мм, Blind hole bricks, cavities: 26-30%
240 х 240 х 9 0 мм, Blind hole bricks: 26-30%

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3.Qualitative characteristics of the product 
 
1.1. Hollow building brick
Size of samples and number of holes: 390х210х190mm, three holes
Max width of hole: 40mm
Min thickness of wall : 30mm 

Name
Results of testing
As required by GB/T15229-2002/T15229-2002
Compactness (kg/m3)
1090
1010~1200
Intensity Level (MPa):
1. Mean value
2. Min value

8.8
6.5

≥7.5
6.0
Water apsorption (%)
9.1
≤20
Moisture (%)
32.0
≤40

 1.2. Hollow building brick

Size of samples and number of holes: 390х190х190mm, two holes
Max hole width: 50мм
Min hole widht : 30мм

Name
Test results
As required by GB/T15229-2002
Compactness (kg/m3)
585
510~600
Intensity level (MPa):
1. Mean value
2. Minimal level

1.7
1.4

≥1.5
1.2
Water absorption (%)
18.0
≤20
Moisture (%)
31.0
≤35

 Deviation in size:
First grade product: Length +/-2, width +/-2, Height +-2
Standard products: Length +/-3, width +/-3, height +/-3

1.3. Compactness

Compactness level
Rates
500
≤500
600
510~600
700
610~700
800
710~800
900
810~900
1000
910~1000
1200
1010~1200
1400
1210~1400

 1.4. Intensity level

Intensity level
Mean value
Minimal value
1.5
≥1.5
1.2
2.5
≥2.5
2.0
3.5
≥3.5
2.8
5.0
≥5.0
4.0
7.5
≥7.5
6.0
10.0
≥10.0
8.0

 1.5. Moisture level

Dryness ratio, %
Weat
Mean
Dry
≤0.03
45
40
35
0.03~0.045
40
35
30
≥0.045~0.065
35
30
25

 2. Hyperpressed bricks 
1.Standard brick size: length 240mm, width 115mm, height 53 mm.
2.Intensity level is divided by MU30, MU25, MU20, MU15, MU10.
3. Raw materials:
3.1 Coal ash should meet the requirements of JC/T 409..
3.2 Lime should meet the requirements of JC/T 621.
3.3 Cement should meet the requirements of GB175..
3.4 Radio active substances should meet the requirements of GB6763..

 Table 1.Size and appearance

Name
Highest grade product (А)
First grade product (В)
Standard product (С)
Tolerable devations in size:
1)Lenght
2)Width
3)Height
 
+/-2
+/-2
+/-1
 
+/-3
+/-3
+/-2
 
+/-4
+/-4
+/-3
Corresponding height
1
2
3
Minimal size of breakdown of corners ?≤
10
15
20
Lenght of cracks ≤
1)Vertical cracks
2) Other carcks
 
30
50
 
50
70
 
70
 100
FOliation
No
No
No

 tаблица 2. Brick intensity rates

Intensity level
Compression resistance
Bending strenght
Mean value 10 cs ≥
Value 1 pc. ≥
Mean value 10 pcs ≥
Value 1 pc. ≥
MU30
30.0
24.0
6.2
5.0
MU25
25.0
20.0
5.0
4.0
MU20
20.0
16.0
4.0
3.2
MU15
15.0
12.0
3.3
2.6
MU10
10.0
8.0
2.5
2.0

 Table 3. Frost hardiness

Intensity level
Compression resistance , Мра
Mean value≥
Quantitative losses of brick, %
Value 1 pc. ≤
MU30
24.0
2.0
MU25
20.0
MU20
16.0
MU15
12.0
MU10
8.0

 Table 4. Sample quantity

Name
Sample quantity, pcs
Deviation in size,quality, apperance
100 (n1=n2=50)
Color
36
Intensity level
10
Frost hardiness
10
Drying contraction
3
Carbonization properties
15

 Test report

Name
Unit
Measure
Strandard
Rates
Test
results
1
Deviation in size and appearance
Шt.
≥45
47
2
Compaction strength (mean value)
MPa
≥20.0
21.4
 
(Min value)
MPa
≥16.0
19.8
3
Intensity (mean value)
MPa
≥4.0
8.5
 
(Minimal value)
MPa
≥3.2
7.1
4
Drying contaction
mm/m
≤0.65
0.31
5
Frost hardiness (hardiness after freezing)
MPa
≥16.0
18.7
 
(qualitative losses)
%
≤2.0
0.8
6
Carbonation ratio
/
≥0.8
0.9

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