Whisker reinforcement-based self-leveling cement mortar and application thereof

A kind of cement mortar and self-leveling technology, applied in the field of self-leveling cement mortar, can solve the problems of poor surface strength, unstable performance, surface micro-cracks, etc. Salt corrosion, good durability

CN106830851AInactive Publication Date: 2017-06-13江苏蓝圈新材料股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses whisker reinforcement-based self-leveling cement mortar. The whisker reinforcement-based self-leveling cement mortar comprises the following components in parts by weight: 10 to 20 parts of ordinary Portland cement, 50 to 150 parts of slag powder, 3 to 20 parts of special cement, 10 to 20 parts of gypsum, 5 to 10 parts of metakaolin, 100 to 160 parts of quartz sand, 1 to 10 parts of a crystal whisker and 1 to 1.5 parts of a water-reducing agent, wherein the special cement adopts sulphoaluminate cement or aluminate cement; the gypsum adopts one of or a mixture of more than two of high-strength gypsum, fluorgypsum, desulfurized gypsum and citric acid gypsum; and the crystal whisker adopts one of or a mixture of more than two of gypsum crystal whiskers, a magnesium hydroxide crystal whisker, a magnesium oxide crystal whisker, an ettringite crystal whisker and a calcium carbonate crystal whisker. A terrace prepared from the whisker reinforcement-based self-leveling cement mortar has high surface hardness and high anti-compression and anti-bending strength, and can meet the wear-resistant requirement of most occasions.
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Description

technical field

[0001] The invention relates to a whisker-based self-leveling cement mortar. Background technique

[0002] Self-leveling floors made of cement mortar and polymers are widely used in waterproofing, repairing, underground garages and anti-corrosion fields. With the development of technology and the needs of engineering, the demand for various functional floors is also increasing. Wear-resistant cement mortar has become the main choice for heavy-duty parking lots and metal processing industrial plants due to its superior wear resistance, high compressive and flexural strength, good impact resistance and surface hardness. However, the technical content of the wear-resistant floor is relatively high, and there are also disadvantages such as complex construction, unstable performance, and micro-cracks on the surface.

[0003] At present, there are many literatures on self-leveling floors in our country. The construction technology and artistic floor preparation me...

Examples

Embodiment 1

[0078] 1. The raw material ratio of self-leveling cement mortar is shown in Table 1

[0079] Table 1 Self-leveling cement mortar formula table Unit: kg

[0080]

[0081] Among them, the whiskers are composed of 60% gypsum whiskers and 40% calcium carbonate whiskers (weight ratio), which are added separately to facilitate uniform stirring.

[0082] According to the formula of self-leveling cement mortar in Example 1 corresponding to Table 1, ordinary Portland cement, slag powder, special cement, gypsum, metakaolin, water reducing agent and whisker powder were weighed according to the weight ratio and the above-mentioned sieved raw materials and quartz sand.

[0083] Stir the weighed ordinary Portland cement, slag powder, sulphoaluminate cement, gypsum, metakaolin and whisker crystal seeds; then add quartz sand for stirring, and release it from the discharge port after 10-20 minutes About half of the powder, re-add the powder from the feed port and continue stirring for abo...

Embodiment 2

[0091] Table 3 Self-leveling cement mortar formula table Unit: kg

[0092]

[0093] Among them, the whiskers are 60% gypsum whiskers and 40% ettringite whiskers. The cost of the two is relatively low, but they should be added separately to facilitate uniform mixing.

[0094] Table 4 Formulation of retarded emulsion Unit: kg

[0095]

[0096] According to the formula corresponding to Table 3, adopt the method of Example 1 to prepare self-leveling cement mortar; according to the formula corresponding to Table 4, adopt the method of Example 1 to prepare retarded emulsion.

[0097] Weigh 85 kg of self-leveling cement mortar and all the retarded emulsions prepared above, and use the method in Example 1 to prepare a self-leveling floor.

[0098] The method provided by JC / T 985-2005 "Cement-based self-leveling mortar for ground" is used for detection. The 28-day flexural strength of the wear-resistant floor prepared in this example is >12.5MPa. The 28-day compressive strength...

Embodiment 3

[0100] Table 5 Self-leveling cement mortar formula table Unit: kg

[0101]

[0102] Among them, the whiskers are 40% gypsum whiskers, 20% ettringite whiskers, 20% calcium carbonate whiskers and 20% magnesium oxide whiskers (weight ratio), and the cost of magnesium oxide whiskers is relatively high, but the performance Increase can improve the tensile strength and crack resistance of the floor mortar after the emulsion content is reduced. The above-mentioned whiskers should be added separately to facilitate uniform mixing.

[0103] Table 6 Formulation of retarded emulsion Unit: kg

[0104]

[0105] According to the formula corresponding to Table 5, adopt the method of Example 1 to prepare self-leveling cement mortar; according to the formula corresponding to Table 6, adopt the method of Example 1 to prepare retarded emulsion.

[0106] 85 kg of the self-leveling cement mortar prepared above and all the slow-setting emulsions prepared above were used to prepare a wear-resi...