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No. 0 colloidal crystal special for shrinkage-free large flow state cement mortar and cement mortar

A cement mortar, non-shrinkage technology, applied in the field of cement special additives, can solve the problems of difficult fluidity of cement mortar, improper watering and curing, etc., achieve good fluidity, excellent segregation resistance, and suppress construction quality problems

Inactive Publication Date: 2012-07-18
BEIJING HUAQIAN GROUTING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult for cement mortar to maintain a good flow state in a state of high viscosity, and it is prone to various construction quality problems caused by the habit of adding too much water or improper maintenance during on-site construction.
Moreover, the existing cement mortar mixed with additives has a final compressive strength of C40 and can only be constructed in an environment of minus 5°C.

Method used

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  • No. 0 colloidal crystal special for shrinkage-free large flow state cement mortar and cement mortar
  • No. 0 colloidal crystal special for shrinkage-free large flow state cement mortar and cement mortar
  • No. 0 colloidal crystal special for shrinkage-free large flow state cement mortar and cement mortar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Type C

[0021] The non-shrinkage large flow state cement mortar Type A special 0# colloid crystal of the present embodiment is made up of the raw material of following weight:

[0022]

[0023] Its preparation method comprises the following steps:

[0024] a. Stirring: put 400kg fly ash and 55kg calcium sulfoaluminate powder into the mixing mixer according to the proportion, then put 5kg lithium carbonate, 15kg polycarboxylate superplasticizer, 20kg boric acid and 5kg tartaric acid, stir to make it completely mix;

[0025] b. Packing: Use kraft paper plastic film bags lined with moisture-proof plastic film to pack the mixture stirred in step a, and the packing specification is 25kg±0.5kg / bag;

[0026] c. Storage: Put the packaged finished bag in a dry and ventilated place, avoid sunlight, pay attention to moisture and water, and the storage period is 12 months.

[0027] In this embodiment, when the special 0# colloidal crystal is specifically prepared for cement ...

Embodiment 2

[0029] Type B

[0030] The non-shrinkage large flow state cement mortar B type special-purpose 0# colloidal crystal of the present embodiment is made up of the raw material of following weight:

[0031]

[0032]

[0033] Its preparation method comprises the following steps:

[0034] b. Stirring: Put 400kg of fly ash and 35kg of calcium sulfoaluminate powder into the mixing mixer according to the proportion, then put in 20kg of lithium carbonate, 60kg of polycarboxylate superplasticizer, 80kg of boric acid and 5kg of tartaric acid, and stir to make it completely mix;

[0035] b. Packing: Use kraft paper plastic film bags lined with moisture-proof plastic film to pack the mixture stirred in step a, and the packing specification is 25kg±0.5kg / bag;

[0036] c. Storage: Put the packaged finished bag in a dry and ventilated place, avoid sunlight, pay attention to moisture and water, and the storage period is 12 months.

[0037] In this embodiment, when the special 0# colloi...

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Abstract

The invention discloses a No. 0 colloidal crystal special for shrinkage-free large flow state cement mortar. The colloidal crystal comprises 1 to 4 weight parts of lithium carbonate, 3 to 10 weight parts of polycarboxylic water reducing agent, 4 to 14 weight parts of boric acid, 0.5 to 1 weight part of tartaric acid, 6 to 11 weight parts of calcium sulfoaluminate powder and 67 to 80 weight parts of fly ash. A preparation method for the colloidal crystal comprises the following steps of: (a), stirring; (b), packing; and (c), storing. By adopting a unique proportion, the early strength of the cement mortar is quickly promoted, and the promoting time is 1 to 3 hours; the cement mortar can adapt to special environments such as iron, chromium and the like; the compactness is improved, and pores are reduced; the cement mortar is good in flowability, low in slump degree, micro-expansive and shrinkage-free; and the final compressive strength of the cement mortar is improved from C40 to C55, the low-temperature construction performance of the cement mortar is improved, and the cement mortar can be normally constructed in an environment of 10-15 DEG C below zero.

Description

technical field [0001] The invention relates to the technical field of special additives for cement, in particular to a special 0# colloid crystal and cement mortar for non-shrinking large-flow cement mortar. Background technique [0002] In the prior art, cement is mixed with water to form a slurry, which can firmly bond sand, stone and other materials together. It is a building material and engineering material with the largest amount of use among inorganic non-metallic materials, and is widely used in construction, water conservancy, etc. , road, petroleum, chemical and military engineering. [0003] However, it is difficult for cement mortar to maintain a good flow state in a state of high viscosity, and it is prone to various construction quality problems caused by the habit of adding too much water or improper maintenance during on-site construction. Moreover, the existing cement mortar mixed with additives has a final compressive strength of C40 and can only be const...

Claims

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Application Information

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IPC IPC(8): C04B24/04
Inventor 温建忠
Owner BEIJING HUAQIAN GROUTING MATERIAL CO LTD
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