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A kind of high-performance sulfur concrete and its preparation method

A sulfur concrete, high-performance technology, applied in the field of building materials, can solve the problems of high storage and processing costs, reduced concrete performance, toxic and harmful gases, etc., to reduce early hydration heat, improve cohesive force, and improve hydration degree Effect

Active Publication Date: 2021-03-30
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the excess sulfur is not utilized, storage and treatment costs are high, and the environment is polluted, the loss outweighs the gain. It is urgent to find a new way to promote the recovery and reuse of sulfur resources.
The traditional sulfur concrete uses sulfur instead of cement as the cementitious material, heats the raw materials to a certain temperature to melt the sulfur, and then stirs it. However, the heating of sulfur and aggregates not only consumes energy but also produces toxic and harmful gases. The preparation method is also difficult to shape, and sulfur will undergo crystal transformation during the heating process, resulting in a decrease in the performance of concrete. At present, thermoplastic sulfur concrete is basically not popularized and applied at home and abroad.

Method used

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  • A kind of high-performance sulfur concrete and its preparation method

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preparation example Construction

[0031] A preparation method of high-performance sulfur concrete, comprising the following steps:

[0032] 1) Weigh each raw material respectively according to the mass ratio of the above-mentioned raw materials;

[0033] 2) Sodium dodecylbenzenesulfonate and sodium carboxymethylcellulose are prepared into a 2% aqueous solution, denoted as a, and set aside;

[0034] 3) Add sulfur into solution a, stir evenly with a magnetic stirrer, keep stirring and slowly add triglyceride fatty acid ester, let it stand for 30 minutes, record it as b, and set aside.

[0035] 4) Stir and mix components A and B of the resin emulsion at room temperature, record as c, and set aside.

[0036] 5) Mix the remaining water and water reducer evenly, record it as d, and set aside.

[0037] 6) Mix the cement and river sand evenly, and add d, b, and c in turn, stir and mix evenly, and form it to obtain a high-performance sulfur concrete.

Embodiment 1

[0040] A kind of high-performance sulfur concrete given in this embodiment is composed of the following raw materials in terms of weight percentage: 34% cement; 41% river sand; 13.1% water; 0.6% water reducer; 10% sulfur powder; emulsifying dispersant 0.3%; resin emulsion 1%. The sum of the weight percentages of raw materials is 100%.

[0041] Among them, the sodium dodecylbenzenesulfonate in the emulsifying dispersant is 25%, the sodium carboxymethylcellulose is 25%, and the triglyceride fatty acid ester is 50%; the contents of components A and B in the resin emulsion are 35% and 65% respectively .

[0042] The preparation method of the above-mentioned high-performance sulfur concrete is carried out according to the following steps:

[0043] Step 1, weigh each raw material respectively according to the mass ratio of the above-mentioned raw materials, and set aside;

[0044] Step 2, preparing sodium dodecylbenzenesulfonate and sodium carboxymethylcellulose into a 2% aqueous...

Embodiment 2

[0050] The difference between this embodiment and the above-mentioned embodiment 1 lies in the ratio of each raw material. The high-performance sulfur concrete is composed of the following raw materials in terms of weight percentage: 30% cement; 41.5% river sand; 11% water; 0.8% water reducing agent; 15% sulfur powder; 0.5% emulsifying and dispersing agent; resin emulsion 1.2%. The sum of the weight percentages of raw materials is 100%.

[0051] Among them, the sodium dodecylbenzenesulfonate in the emulsifying dispersant is 20%, the sodium carboxymethylcellulose is 25%, and the triglyceride fatty acid ester is 55%; the contents of components A and B in the resin emulsion are 40% and 60% respectively .

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Abstract

The invention discloses high-performance sulfur concrete and a preparation method thereof. The high-performance sulfur concrete comprises the following raw materials in percentage by mass: 30%-37% ofcement, 38%-43% of river sand, 11%-17% of water, 0.4%-0.8% of a water reducer, 8%-15% of sulfur powder, 0.1-0.5% of an emulsifying dispersant and 0.8-1.2% of resin emulsion. By the high-performance sulfur concrete provided by the invention, sulfur can be recycled, furthermore, the bending resistance, the seepage resistance and the frost resistance of the concrete can be improved, and the durability of the concrete and the service capability of the concrete under extreme condition are improved effectively.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a concrete material, in particular to a high-performance sulfur concrete and a preparation method thereof. Background technique [0002] At present, the transportation infrastructure has put forward higher requirements for infrastructure materials. On the one hand, the development trend of heavy axle load and high speed of traffic flow makes the high-speed and high-frequency impact on the road surface (bridge deck) more and more obvious; on the other hand , the western and coastal areas have relatively harsh climate conditions, large temperature differences, high humidity, and rich chloride ion content. These conditions have put forward higher and stronger new requirements for concrete materials. The shortcomings of ordinary concrete such as brittleness and durability are exposed one by one, which is far from meeting the needs of construction projects. Moreover, due to high energy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36C04B24/38C04B111/27C04B111/20C04B103/40
CPCC04B28/36C04B40/0039C04B2103/408C04B2111/20C04B2111/27C04B2111/29C04B2201/50C04B24/20C04B24/383C04B24/08C04B24/281C04B7/02C04B14/068C04B2103/302
Inventor 郑睢宁何锐王铜鲁孝松黄庆庆陈华鑫
Owner CHANGAN UNIV
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