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Artificial stone made from desert fine sand and method for making the same

A manufacturing method, desert technology, applied in the field of building materials, can solve the problems of difficult transportation in the desert, increase in project cost, etc., and achieve the effect of reducing transportation costs, reducing project cost, and simplifying the manufacturing process

Inactive Publication Date: 2011-11-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Desert transportation is very difficult, which greatly increases the project cost
However, although the desert has no natural stone, it has an inexhaustible source of sand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Utilize the sand separator (commercially available) to separate the coarse sand with a particle size greater than 0.6mm;

[0014] (2) The coarse sand prepared in step (1) is mixed with the desert raw sand at 6:4 to obtain a finished sand with reasonable gradation;

[0015] (3) Stir 100.0kg of 42.5 grade ordinary Portland cement, 350.0kg of finished sand, 36.0kg of water and 1.0kg of UNF water reducer (Tianjin Architectural Design and Research Institute, JGJ56-84) with an ordinary mortar mixer, and use ordinary brick The block molding machine (JDH10 type) made mortar blocks with a size of 240mm×115mm×100mm. The vibration pressure was controlled at 0.5MPa, the amplitude was 5±1mm, the frequency was 50Hz, and the molding time was 10s. Then the mortar block was naturally cured for 14 days, and its compressive strength reached 50MPa.

[0016] (4) Use a crocodile crusher to crush the mortar blocks to obtain artificial stones with a particle size of 5-30 mm.

Embodiment 2

[0018] (1) Use a sand separator to separate coarse sand with a particle size greater than 0.6mm;

[0019] (2) The coarse sand prepared in step (1) is mixed with the desert raw sand at 6:4 to obtain a finished sand with reasonable gradation;

[0020] (3) Mix 100.0kg of 42.5-grade ordinary Portland cement, 400.0kg of finished sand, 40.0kg of water and 1.0kg of UNF water reducer with an ordinary mortar mixer, and use an ordinary block forming machine (JDH10 type) to make a size of For mortar blocks of 240mm×115mm×100mm, the control vibration pressure is 0.5MPa, the amplitude is 5±1mm, the frequency is 50Hz, and the molding time is 10s. Then the mortar block was naturally cured for 14 days, and its compressive strength reached 40MPa.

[0021] (4) Use a crocodile crusher to crush the mortar blocks to obtain artificial stones with a particle size of 5-30 mm.

Embodiment 3

[0023] (1) Use a special sand separator to separate coarse sand with a particle size greater than 0.6mm;

[0024] (2) The coarse sand prepared in step (1) is mixed with the desert raw sand at 6:4 to obtain a finished sand with reasonable gradation;

[0025] (3) Mix 100.0kg of 42.5 grade ordinary Portland cement, 450.0kg of finished sand, 44.0kg of water and 1.0kg of UNF water reducing agent with a common mortar mixer, and use a common block forming machine (JDH10 type) to make a size of For mortar blocks of 240mm×115mm×100mm, the control vibration pressure is 0.5MPa, the amplitude is 5±1mm, the frequency is 50Hz, and the molding time is 10s. Then the mortar block was naturally cured for 14 days, and its compressive strength reached 35MPa.

[0026] (4) Use a crocodile crusher to crush the mortar blocks to obtain artificial stones with a particle size of 5-30 mm.

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Abstract

The invention relates to an artificial pebble made from desert fine sand and a manufacturing method thereof. Use the sand separator to select sand larger than 0.6mm in the desert fine sand, and then mix the selected sand with an appropriate amount of raw sand to obtain a finished sand with a reasonable gradation; mix the finished sand with an appropriate amount of cement and water to obtain cement mortar, use The molding machine makes the mortar into blocks; after the mortar blocks are solidified and hardened, they are crushed by a stone crusher to obtain artificial stones for preparing cement concrete. Wherein the mass ratio of cement:sand=1:5~1:8. The artificial stone of the present invention has a simple manufacturing process, can make full use of sand resources in deserts, greatly reduces transportation costs and engineering costs, and can produce artificial stones with different strength requirements by choosing different cement-sand ratios, with a compressive strength of 20-50 MPa .

Description

technical field [0001] The invention relates to building materials, in particular to an artificial stone made from desert fine sand and a manufacturing method thereof. Background technique [0002] Stone is the main component of concrete and is usually obtained by crushing natural stone. In recent years, my country has undertaken a large number of civil engineering, transportation and oil field development projects in the African desert area. Since there is no natural stone in the desert area, the stones used for concrete have to be transported from outside. Transportation in the desert is very difficult, which greatly increases the project cost. However, although the desert has no natural stone, it has an inexhaustible source of sand. According to research, about 10% to 15% of the fine sand in the African Sahara Desert has a particle size greater than 0.6mm. Using desert fine sand to make artificial stones can greatly reduce the construction cost, so it will have a huge ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/00
CPCC04B2201/52C04B2111/542C04B28/02
Inventor 亢景付蒋晓鸥
Owner TIANJIN UNIV
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