A special admixture for assembled mortar products

Abstract

The invention discloses a special admixture for assembled mortar products, which belongs to the technical field of mortar products. Among them, the special admixture for assembled mortar products, in parts by weight, includes the following formula components: water reducer powder: 5 parts-10 parts, rubber powder: 30 parts-35 parts, retarder: 3 parts-5 parts, disinfectant Foam agent: 2-5 parts, activator: 50-60 parts. The preparation method of the special admixture for assembled mortar products is as follows: select the following raw materials: water reducer powder, rubber powder, retarder, defoamer, activator, weigh the raw materials of the above corresponding quality, stir and mix for 120 minutes, pack into bags, That's it. After testing, the cement prepared with the admixture has excellent comprehensive properties. Specifically, after the admixture is mixed with P.O 42.5 cement, the performance parameters such as flexural strength, compressive strength, final setting time, and plastic time are all effectively improved.

Description

technical field [0001] The invention belongs to mortar products, and in particular relates to a special admixture for assembled mortar products. Background technique [0002] Now the construction site requires a kind of mortar, that is, to ensure that the mortar mixing machine can be operated for half an hour, and to ensure that the compressive strength reaches more than 20MPa and the flexural strength reaches more than 4MPa in two hours. Now the construction site uses rapid-hardening sulfoaluminate cement to achieve a rapid increase in strength, and steel fibers are added to solve the problem of flexural resistance. However, relying on sulfoaluminate cement and steel fibers to meet the requirements of compressive and flexural resistance has caused many problems in actual production. [0003] It is necessary to ensure that the mortar can be operated for half an hour, because sulphoaluminate cement is highly alkaline, and the existing polycarboxylate superplasticizers on the...

AI Technical Summary

Problems solved by technology

[0005] ①The system needs to use sulphoaluminate cement, and the cost is relatively high;

[0006] ②Poor fluidity;

[0008] ④ Poor control of coagulation time;

[0009] ⑤ Unstable strength

However, the above-mentioned technical scheme has been tested by our side, and the effect is average, and it needs a long final setting time, which is not suitable for large-scale promotion and application in the north, especially in the northeast region.

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