Fair-faced concrete mix proportion design method and related fair-faced concrete

A mix ratio design and fair-faced concrete technology, which is applied in the fair-faced concrete mix design and fair-faced concrete field, can solve problems such as the inability to omit the whitewashing process, the inability to use the natural surface effect of cast-in-place concrete, and the failure of fair-faced concrete to meet the design requirements of fair-faced concrete, etc.

CN105753391AActive Publication Date: 2016-07-13SHANDONG JIANZE CONCRETE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-07-13

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Abstract

The invention provides a fair-faced concrete mix proportion design method.The method includes: naturally stacking stones to obtain a stone mass m1, and closely filling the stones with sand to obtain a sand mass m2; determining a water-binder ratio according to a strength design theory, preparing slurry according to the proportion of each binder material, and measuring density of the slurry; calculating superficial areas of the sand and the stones and a coating thickness of the pure slurry to obtain a volume (including sand volume below 0.315mm) of the pure slurry, comparing the sum of the volume of the pure slurry, the sand volume above 0.315mm and the stone volume with a unit volume to regulate quantity of the sand and the pure slurry to make the total volume equal to the unit volume; subtracting the sand volume below 0.315 from the volume of the pure slurry to obtain the volume of the slurry; calculating the mass of the slurry and each binder material and water consumption; finally working out a fair-faced concrete mix proportion.The designed fair-faced concrete can meet design requirements of the fair-faced concrete, and ingenious design, simplicity and convenience in operation and suitableness for large-scale popularization and application are realized.
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Description

technical field

[0001] The invention relates to the technical field of building materials, more specifically, to the technical field of concrete mix ratio design, in particular to a method for designing the mix ratio of fair-faced concrete and related fair-faced concrete. Background technique

[0002] Fair-faced concrete, also known as decorative concrete, gets its name because of its great decorative effect. It belongs to one-time pouring molding, without any external decoration, directly adopts the natural surface effect of concrete as the veneer, which can save the traditional plastering, veneering and other whitewashing processes, so it is different from ordinary concrete, with smooth surface, uniform color, The edges and corners are clear, without damage and pollution, and only one or two layers of transparent protective agent are applied on the surface, which looks very natural and dignified.

[0003] However, there is currently no standard method for the mix design o...

Examples

Embodiment 1

[0033] 1. Raw material quality

[0034] 1.1 stone (ie stone) (5-25mm)

[0035] The apparent density of stone is 2720kg / m3 .

[0036] Cumulative sieving % of stone

[0037] Sieve hole mm

2.36

4.75

16.0

26.5

31.5

standard requirement

95-100

90-100

30-70

0-5

0

3 --> test value

98.3

93.7

57.4

0

0

[0038] The surface area coefficient of each sieve hole

[0039] Sieve hole mm

2.36

4.75

16.0

26.5

31.5

Specific surface area coefficient m2 / kg

0.0082

0.0041

0.00090

0.00056

0.00043

[0040] 1.2 sand (ie sand)

[0041] The apparent density of sand is 2700kg / m 3 .

[0042] Cumulative sieve residue% of sand

[0043] Sieve hole mm

0.16

0.315

0.63

1.25

2.50

5.00

standard requirement

90-100

70-92

41-70

10-50

0-25

0-10

test value

97

88

67

42

18

6 ...