阅读说明：本技术 一种聚羧酸高效混凝土外加剂及其制备方法 (Polycarboxylic acid high-efficiency concrete admixture and preparation method thereof ) 是由 崔松 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种聚羧酸高效混凝土外加剂及其制备方法,涉及聚羧酸混凝土外加剂及其配制方法,丙烯酸10-30份、烯丙基磺酸钠10-30份、硫酸亚铁10-30份、工业盐10-30份、粉煤灰10-30份、碳酸钙粉10-20份、阻锈剂5-10份、粉碎废弃衣物10-15份、稳定剂5-10份、氢氧化钠5-10份、无机基体材料5-10份、抗坏血酸5-10份、早强剂2-8份、减水剂2-8份、调凝剂2-8份、表面活性剂2-6份、激发剂2-6份、防水剂2-6份、水30-50份。本发明具有高早强,后期无收缩、硬化及凝结时间可调、适用温度范围宽、掺量低等特点,制备工艺简单、生产周期短、成本低廉,适合工业规模化生产。(The invention discloses a polycarboxylic acid high-efficiency concrete admixture and a preparation method thereof, and relates to a polycarboxylic acid concrete admixture and a preparation method thereof, wherein the polycarboxylic acid concrete admixture comprises 10-30 parts of acrylic acid, 10-30 parts of sodium allylsulfonate, 10-30 parts of ferrous sulfate, 10-30 parts of industrial salt, 10-30 parts of fly ash, 10-20 parts of calcium carbonate powder, 5-10 parts of a rust inhibitor, 10-15 parts of crushed waste clothes, 5-10 parts of a stabilizer, 5-10 parts of sodium hydroxide, 5-10 parts of an inorganic matrix material, 5-10 parts of ascorbic acid, 2-8 parts of an early strength agent, 2-8 parts of a water reducing agent, 2-8 parts of a coagulation regulator, 2-6 parts of a surfactant, 2-6 parts of an exciting agent, 2-6 parts of a waterproof agent and 30-50 parts of water. The invention has the characteristics of high early strength, no shrinkage in later period, adjustable hardening and condensing time, wide applicable temperature range, low mixing amount and the like, and is simple in preparation process, short in production period, low in cost and suitable for industrial large-scale production.)

1. The polycarboxylic acid high-efficiency concrete admixture is characterized by comprising the following raw materials in parts by weight: 10-30 parts of acrylic acid, 10-30 parts of sodium allylsulfonate, 10-30 parts of ferrous sulfate, 10-30 parts of industrial salt, 10-30 parts of fly ash, 10-20 parts of calcium carbonate powder, 5-10 parts of rust inhibitor, 10-15 parts of crushed waste clothes, 5-10 parts of stabilizer, 5-10 parts of sodium hydroxide, 5-10 parts of inorganic matrix material, 5-10 parts of ascorbic acid, 2-8 parts of early strength agent, 2-8 parts of water reducing agent, 2-8 parts of pour regulator, 2-6 parts of surfactant, 2-6 parts of excitant, 2-6 parts of waterproof agent and 30-50 parts of water.

2. The polycarboxylic acid high-efficiency concrete admixture according to claim 1, which is characterized in that: the particle size of the calcium carbonate powder is 120-140 meshes.

3. The method for preparing the polycarboxylic acid high-efficiency concrete admixture as claimed in claim 1, which is characterized in that: the method comprises the following steps:

the method comprises the following steps: preparing materials according to the components in the proportion and the content in parts by weight;

step two: placing acrylic acid and sodium allylsulfonate into a reactor for copolymerization reaction to obtain a polymer for later use;

step three: pumping the polymer mixed in the second step to a symbiotic tank, sequentially mixing ferrous sulfate, industrial salt, fly ash, calcium carbonate powder, crushed waste clothes, a rust inhibitor, a stabilizer, sodium hydroxide, an early strength agent, a water reducing agent, a surfactant, a waterproof agent and ascorbic acid in a reaction kettle, and adding water, a coagulation regulator and an exciting agent; heating to a proper temperature;

step four: adding inorganic matrix material, stirring uniformly, pumping and storing to obtain the polycarboxylic acid high-efficiency concrete admixture.

4. The method for preparing the polycarboxylic acid high-efficiency concrete admixture as claimed in claim 3, which is characterized in that: the temperature of the copolymerization reaction in the second step reactor is controlled at 110-120 ℃, and the reaction time is 3.5-5.5 h.

5. The method for preparing the polycarboxylic acid high-efficiency concrete admixture as claimed in claim 3, which is characterized in that: and step three, heating to a proper temperature and controlling the temperature to be 55-65 ℃.

Technical Field

The invention relates to a polycarboxylic acid high-efficiency concrete admixture and a preparation method thereof, and relates to a polycarboxylic acid concrete admixture and a preparation method thereof.

Background

At present, mortar and concrete admixtures provided for constructional engineering are single varieties, and more than two admixtures are required to obtain more than two effects, so that construction inconvenience is brought to constructional engineering and production cost is increased.

The research object of the additive is actually to cement, which is an indispensable cementing material in concrete, and the production of cement is a product with high energy consumption and environmental pollution.

The application of concrete admixture in engineering is more and more emphasized, the addition of the admixture plays a certain role in improving the performance of concrete, but the selection, addition method and adaptability of the admixture seriously influence the development of the admixture.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the polycarboxylic acid high-efficiency concrete admixture and the preparation method thereof, and the polycarboxylic acid high-efficiency concrete admixture has the characteristics of high early strength, no shrinkage in the later period, adjustable hardening and setting time, wide applicable temperature range, low mixing amount and the like, and is simple in preparation process, short in production period, low in cost and suitable for industrial large-scale production.

The polycarboxylic acid high-efficiency concrete admixture comprises the following raw materials in parts by weight: 10-30 parts of acrylic acid, 10-30 parts of sodium allylsulfonate, 10-30 parts of ferrous sulfate, 10-30 parts of industrial salt, 10-30 parts of fly ash, 10-20 parts of calcium carbonate powder, 5-10 parts of rust inhibitor, 10-15 parts of crushed waste clothes, 5-10 parts of stabilizer, 5-10 parts of sodium hydroxide, 5-10 parts of inorganic matrix material, 5-10 parts of ascorbic acid, 2-8 parts of early strength agent, 2-8 parts of water reducing agent, 2-8 parts of pour regulator, 2-6 parts of surfactant, 2-6 parts of excitant, 2-6 parts of waterproof agent and 30-50 parts of water.

The particle size of the calcium carbonate powder is 120-140 meshes.

A preparation method of a polycarboxylic acid high-efficiency concrete admixture comprises the following steps:

the method comprises the following steps: preparing materials according to the components in the proportion and the content in parts by weight;

step two: placing acrylic acid and sodium allylsulfonate into a reactor for copolymerization reaction to obtain a polymer for later use;

step three: pumping the polymer mixed in the second step to a symbiotic tank, sequentially mixing ferrous sulfate, industrial salt, fly ash, calcium carbonate powder, crushed waste clothes, a rust inhibitor, a stabilizer, sodium hydroxide, an early strength agent, a water reducing agent, a surfactant, a waterproof agent and ascorbic acid in a reaction kettle, and adding water, a coagulation regulator and an exciting agent; heating to a proper temperature;

step four: adding inorganic matrix material, stirring uniformly, pumping and storing to obtain the polycarboxylic acid high-efficiency concrete admixture.

The temperature of the copolymerization reaction in the second step reactor is controlled at 110-120 ℃, and the reaction time is 3.5-5.5 h.

And step three, heating to a proper temperature and controlling the temperature to be 55-65 ℃.

Has the advantages that: the polycarboxylic acid high-efficiency concrete admixture and the preparation method thereof have the characteristics of high early strength, no shrinkage in later period, adjustable hardening and setting time, wide applicable temperature range, low mixing amount and the like, and are simple in preparation process, short in production period, low in cost and suitable for industrial large-scale production.

Detailed Description

The present invention will be described in further detail by way of examples.