Mortar additive and production process thereof

A mortar additive and production process technology, applied in the field of building materials, can solve the problems of surface pulverization and bond strength decrease, air-entraining agent has no water retention effect, and mortar compactness decreases, so as to achieve good water retention and slurry stability High, not easy to scratch the effect

Inactive Publication Date: 2013-05-08
黄明杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the amount of air-entraining increases with the increase of the amount of Mortar King or Mortar Bao, construction workers often add excessive amounts for the convenience of construction. The consequences are that the compactness of the mortar decreases, the compressive strength is low, and the phenomenon of mortar pulverization is prone to occur.
One more thing needs to be mentioned, the air-entraining agent has no water retention effect, so the moisture in the mortar will be lost quickly. If it is not maintained after construction, the strength of the mortar will be reduced, the surface layer will be powdered and the bond strength will be reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Present embodiment provides a kind of by weight, and mortar additive comprises following components:

[0046] 3.2 parts of methyl hydroxyethyl cellulose ether;

[0047] 4 parts of methyl cellulose ether;

[0048] 22.1 parts of vinyl acetate-ethylene copolymer;

[0049] 30 parts of vinyl acetate homopolymer;

[0050] 40.4 parts of sodium bentonite;

[0051] Alkylbenzene sulfonates 0.3 parts.

[0052] Its production process is as follows:

[0053] Step 1, weigh 3.2kg of methyl hydroxyethyl cellulose ether, 4kg of methyl cellulose ether, 22.1kg of vinyl acetate-ethylene copolymer, 30kg of vinyl acetate homopolymer, 40.4kg of sodium bentonite, alkyl 0.3kg of benzenesulfonates;

[0054] Step 2, put methyl hydroxyethyl cellulose ether, methyl cellulose ether, vinyl acetate-ethylene copolymer, vinyl acetate homopolymer, sodium bentonite and alkylbenzene sulfonate into the conical double In the spiral mixer, stir and stir for 10 minutes; wherein, the alkylbenzene sulfona...

Embodiment 2

[0058] Present embodiment provides a kind of by weight, and mortar additive comprises following components:

[0059] 3.2 parts of hydroxyethyl cellulose ether;

[0060] 5.3 parts of hydroxypropyl methylcellulose ether;

[0061] 18.1 parts of styrene-butadiene copolymer;

[0062] 26.3 parts of acrylate-styrene copolymer;

[0063]15.5 parts of sodium bentonite;

[0064] 31.3 parts of lithium-based bentonite;

[0065] 0.1 part of nonionic surfactant;

[0066] Alkylphenol ethylene oxide condensates 0.2 parts.

[0067] Its production process is as follows:

[0068] Step 1, weigh 3.2kg of hydroxyethyl cellulose ether, 5.3kg of hydroxypropyl methyl cellulose ether, 18.1kg of styrene-butadiene copolymer, 26.3kg of acrylate-styrene copolymer, sodium bentonite 15.5kg, lithium bentonite 31.3kg, nonionic surfactant 0.1kg, alkylphenol ethylene oxide condensate 0.2kg;

[0069] Step 2, hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether, styrene-butadiene copolymer, ac...

Embodiment 3

[0073] Present embodiment provides a kind of by weight, and mortar additive comprises following components:

[0074] 1.5 parts of hydroxyethyl cellulose ether;

[0075] 3.3 parts of methyl cellulose ether;

[0076] 19 parts of vinyl acetate homopolymer;

[0077] 30.3 parts of acrylate-styrene copolymer;

[0078] 20 parts of sodium bentonite;

[0079] 25.5 parts of calcium-based bentonite;

[0080] 0.2 part of nonionic surfactant;

[0081] Woody cyclic salts 0.2 parts.

[0082] Its production process is as follows:

[0083] Step 1, weigh 1.5 kg of hydroxyethyl cellulose ether, 3.3 kg of methyl cellulose ether, 19 kg of vinyl acetate homopolymer, 30.3 kg of acrylate-styrene copolymer, 20 kg of sodium bentonite, and 25.5 kg of calcium bentonite kg, 0.2kg of non-ionic surfactant, 0.2kg of lignocycline salts;

[0084] Step 2, hydroxyethyl cellulose ether, methyl cellulose ether, vinyl acetate homopolymer, acrylate-styrene copolymer, sodium-based bentonite, calcium-based ben...

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PUM

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Abstract

The invention belongs to the technical field of construction material, and particularly relates to a mortar additive, wherein the mortar additive comprises the following components in parts by weight: 1-12 parts of cellulose ether, 20-80 parts of polymer latex powder, 20-70 parts of thixotropic agent and 0.1-0.7 part of air entraining agent. The production process of the mortar additive solves the problems that the mixed mortar has low quality; the mixed mortar has poor workability, is dry and difficult to scrape; the bonding strength is low, the phenomena of hollowing and dropping are easy to appear; the shrinkage is big, the surface is easy to crack and the like. The mortar mixed with the mortar additive provided by the invention has the advantage of high combination property, such as construction property, water retention, compressive strength, bonding strength, cracking resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a mortar additive which can improve the comprehensive performance of mortar and is easy to construct and a production process thereof. Background technique [0002] At present, on construction sites, masonry mortar, plastering mortar and ground mortar still adopt the production mode of site mixing. The cost of ready-mixed mortar on site is low, but there are several problems in the following aspects: [0003] 1. The formula is simple: in general, only cement and river sand are used, and lime will be added if conditions permit, and the overall performance of the mortar is not good; 2. The quality of raw materials is not stable: due to the low requirements for ready-mixed mortar on the construction site, low-standard compounding is often used for mixing mortar cement, but the overall qualified rate of this type of cement is low; the river sand gradation use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
Inventor 张立功
Owner 黄明杰
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