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Self-levelling underlayment material

A cement and leveling technology, applied in the field of new chemical materials for roads and bridges, can solve problems such as floor cracks and affecting the service life of cement self-leveling floors.

Inactive Publication Date: 2013-06-12
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] With in-depth research, the researchers found that the cement self-leveling mortar material completely solidifies and dries the floor to produce cracks, which affects the service life of the cement self-leveling floor

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0043] The preparation method of the cement self-leveling floor of the present invention is a method well known to those skilled in the art, and specifically can be prepared as follows:

[0044] 40-100 parts by weight of sand, 40-100 parts by weight of cement, 2-30 parts by weight of gypsum, 2-30 parts by weight of inorganic fluoride, 0.1-15 parts by weight of water reducing agent, 4-15 parts by weight of The expansion agent, 0.1-10 parts by weight of viscosifying water-retaining agent and 0.1-15 parts by weight of fiber are placed in a mixer and mixed at room temperature for 5-60 minutes to obtain dry powder of cement self-leveling floor material;

[0045] Add a certain amount of water to the dry powder of cement self-leveling floor materials, and the weight ratio of dry powder to water is preferably 100: (25-45);

[0046] The cement self-leveling floor material slurry obtained above is evenly spread on the construction ground, and maintained for 3 to 28 days to obtain an env...

Embodiment 1

[0051] Accurately weigh 4.5kg river sand and 4.5kg quartz sand, 5kg P.O42.5 Portland cement, 5kg Shuangkuai-150 sulfoaluminate cement, 0.2kg hemihydrate gypsum, 0.8kg mixture of fluorogypsum, 0.3kg dry powder type polycarboxylate superplasticizer, 0.1kg redispersible latex powder HW5115, 0.2kg hydroxypropyl methylcellulose, 0.2kg polyvinyl alcohol 1788, 0.5kg sodium fluoride , 0.5kg of calcium oxide expansion agent and 0.5kg of glass fiber are placed in a high-speed mixer and mixed for 20 minutes before being discharged. The material test performance is shown in Table 1.

[0052] According to the test method of JC / T-985 cement-based self-leveling mortar for ground, the results are shown in Table 1:

[0053] The performance data table of the cement self-leveling floor material prepared by the embodiment 1 of table 1

[0054]

Embodiment 2

[0056] Accurately weigh 3kg of river sand and 1kg of quartz sand, 2kg of aluminate cement and 2kg of iron-aluminate cement, 3kg of fluorogypsum, 2kg of magnesium fluoride, 1kg of calcium fluoride, and 1.0kg of amino acid with a particle size of 0.10mm to 0.50mm. Water reducer, 0.5kg polycarboxylate water reducer, 1.2kg calcium sulfoaluminate expansion agent, 0.3kg magnesium oxide expansion agent, 0.5kg polyvinyl alcohol 1788, 0.5kg lignin, 1.0kg asbestos fiber and 0.5kg seawater The foam stone fiber is discharged after being placed in a high-speed mixer and mixed for 20 minutes.

[0057] According to the test method of JC / T-985 cement-based self-leveling mortar for ground, the results are shown in Table 2:

[0058] The performance data sheet of the cement self-leveling floor material prepared by the embodiment 2 of table 2

[0059]

[0060]

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Abstract

The invention relates to the technical field of chemical new materials for roads and bridges and provides a self-levelling underlayment material. The self-levelling underlayment material comprises 40-100 parts by weight of sand, 40-100 parts by weight of cement, 2-30 parts by weight of gypsum, 2-30 parts by weight of inorganic fluoride, 0.1-15 parts by weight of water reducer, 4-15 parts by weight of swelling agent, 0.1-10 parts by weight of tackification and water retention agent and 0.1-15 parts by weight of fibers. The self-levelling underlayment material has the following advantages: the swelling agent is added, so that the surface compactness of a self-levelling underlayment can be improved, cracks generated by contraction can be relieved, and thus the service life of the self-levelling underlayment is prolonged.

Description

[0001] This application claims the priority of the Chinese patent application submitted to China Patent Office on March 19, 2013, with application number 201310088130.0, and the title of the invention is "a cement self-leveling floor material". technical field [0002] The invention relates to the technical field of new chemical materials for roads and bridges, in particular to a cement self-leveling floor material. Background technique [0003] Cement self-leveling mortar is a new type of ground material that uses cement as the main cementitious material and is mixed with suitable additives and fine sand. It is used for leveling or finishing the ground. Since the self-leveling material has the advantages of good fluidity and stability, thin leveling layer, high strength value, good acid resistance and easy construction, it has become an ideal material for ground paving in large supermarkets, shopping malls, parking lots and warehouses. It is also a development direction of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/04C04B28/34C04B111/62
Inventor 周威蒋涛
Owner HUBEI UNIV
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