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
up>>
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%
up>>
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
|
|
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
|
up>>
