Efficient mortar plasticizer base material and its efficient mortar plasticizer composition

A plasticizer and composition technology, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of increasing cement consumption, construction difficulties, insufficient dosage, etc. Plump, not easy to coagulate and break, and improve the effect of solution concentration

Inactive Publication Date: 2007-01-10
四川铁科新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the workability of mortar, in the past, it mainly relied on increasing the amount of cement by 20-30% or mixing lime paste with 30-100% of cement amount. As a result, the increase in cement amount and cost increased the mortar workability. , the use of lime paste will seriously pollute the construction site, causing cracks, hollowing, and falling off of the plastering mortar wall surface, which will affect the quality of the project;
[0003] Since the 1980s, rosin thermal polymer air-entraining agent has been used instead of lime plaster in masonry and plastering mortar, which can significantly improve the workability of mortar, but its main function is to introduce a large number of pores with a diameter of 300-500μm. The air bubbles in the mortar, these large and many air bubbles slide between the mortar particles like balls during the mixing process of the mortar, which improves the workability of the mortar. up to 40-60%, causing serious damage to the quality of the project
[0004] Microfoam is used in mortar, the dosage is several parts per ten thousand to several parts per hundred thousand, and the measurement is very difficult. If the dosage is insufficient, the workability cannot be improved. If the dosage is too large, the strength of the mortar will drop too much, and the project quality will be seriously affected. On the other hand, the microfoam agent is a liquid, and the temperature in winter is low, so it needs to be heated and dissolved, otherwise it cannot be used, which will bring difficulties to the construction. Therefore, the promotion and use of the microfoam agent has been restricted by the construction management department in recent years.
[0005] At present, the mortar essence and mortar king appearing on the market can also replace lime plaster and improve the workability of mortar when used in construction. However, it is a modification of microfoam products, that is, it is changed from liquid to solid. , from a few parts per thousand to a few parts per thousand, it is easy to use, save, and does not pollute the environment, but its main mechanism is an air-entraining product, which also relies on introducing a large number of air bubbles into the mortar. Improve the workability of mortar, and its mortar strength will also decrease by 30-40% compared with the benchmark mortar strength, which cannot guarantee the quality of construction projects. Due to the decrease in strength, the only way to make up for the loss of strength is to increase the amount of cement

Method used

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  • Efficient mortar plasticizer base material and its efficient mortar plasticizer composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First heat 45kg of water in the reactor to 100°C, slowly add 11kg of sodium abietate during stirring, after the rosin polymer is completely dissolved, slowly add 5kg of sodium hydroxide, and keep stirring, After the dissolution is complete, stop heating, and use boiling water to make up for the lost moisture; cool down to 60°C and react at a constant temperature for 4 hours until the reaction is complete, add 8kg of sodium dodecylbenzenesulfonate and 1kg of triethanolamine during the stirring process, Mix well, then react at a constant temperature at 60°C for 3 hours until the reaction is complete, then add 10kg of polycarboxylate superplasticizer, react at 40°C for 2 hours, and cool to room temperature. Finally, spray-dry to obtain 32kg of powdery granule products, add 4kg of hydroxyethyl methylcellulose and 9kg of microsilica powder (first-class fly ash) to compound into 45kg of high-efficiency mortar plasticizer base material.

Embodiment 2

[0044] Add 50kg of water to the reaction kettle, heat it to boiling water at 100°C, then slowly add 5kg of potassium hydroxide, and stir until it is completely dissolved, then slowly add 12.5kg of rosin powder to fully dissolve it, and cool down to 75°C After adding 2kg of triethanolamine and mixing well, add 10kg of sodium lauryl sulfate to fully dissolve and cool down to 50°C, add 12kg of sulfamate water reducer with a solid content of 40%, and react at a constant temperature of 35°C for 5 hours , until the reaction is complete, cooled to normal temperature, spray-dried into powder, and the dry powder with a weight of 35kg is compounded with 5kg of thickener hydroxyethyl cellulose and 10kg of silicon micropowder (first-grade fly ash) to form a total High-efficiency mortar plasticizer base material with a weight of 40kg.

[0045] High-efficiency mortar plasticizer composition embodiment

[0046] According to different purposes, use high-efficiency mortar plasticizer base mat...

Embodiment 3

[0051] Embodiment 3 (taking 1000kg as example)

[0052] High-efficiency mortar plasticizer composition (JX-B1 normal temperature type): use 300kg of high-efficiency mortar plasticizer base material, add 300kg of sodium lignosulfonate, 250kg of β-naphthalene sulfonate water-reducing plasticizer, and the balance is Fly ash, compounded evenly, measured and packaged as finished products.

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Abstract

This invention relates to a basic material of a high efficient mortar DBP to be prepared by the following method: a, adding 11-14% rosin polymers into 45-55% water of 80-120deg.C slowly and mixing them in a kettle continuously to be solved fully, then adding 4-6% inorganic alkali and dissolving them completely under the 60-80deg.C constant to the complete reaction, b, adding 8-10% sulfosalt while mixing, 1-2% polyalcohol under 40-60 deg.C constant to the complete reaction, c, adding 10-11% DBP to be dissolved fully under 30-50 deg.C to be cooled to normal temperature, d, spraying and drying them to powder particles then to be matched with 3-5% DBP and 9-11% silicon powder to get the basic material of high efficient mortar DBP. This invention also relates to its compound.

Description

technical field [0001] The invention relates to a mortar admixture, in particular to a high-efficiency mortar plasticizer base material and a preparation method thereof, and a high-efficiency mortar plasticizer composition. Background technique [0002] In industrial and civil construction projects, the application of masonry and plastering mortar is very common. Our country needs more than 1 billion cubic meters of construction mortar every year, 200-300 million tons of cement, and 100-200 million tons of lime paste. In order to meet the workability of mortar, in the past, it mainly relied on increasing the amount of cement by 20-30% or mixing lime paste with 30-100% of cement amount. As a result, the increase in cement amount and cost increased the mortar workability. , the use of lime paste will seriously pollute the construction site, causing cracks, hollowing, and falling off of the plastering mortar wall surface, which will affect the quality of the project; [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/34C04B24/16C04B22/06C04B22/10C04B14/04
CPCC04B40/0042Y02W30/91C04B18/146C04B22/06C04B22/10C04B24/16C04B24/34C04B24/383C04B2103/302C04B24/2647
Inventor 苏泽彬
Owner 四川铁科新型建材有限公司
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