CN104119023A - High-efficiency delayed coagulation water reducing agent - Google Patents

Abstract

The invention discloses a high-efficiency delayed coagulation water reducing agent which is prepared by mixing the following raw materials in parts by weight: 40-60 parts of melamine sulfonate formaldehyde condensation product, 25-35 parts of poly-benzofuran resin sodium sulfonate, 10-15 parts of corn starch, 8-12 parts of sodium gluconate, 2-4 parts of xylitol, 4-8 parts of calcium superphosphate, 3-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 2-3 parts of glycerol ester of rosin, 3-5 parts of triethanolamine, 4-7 parts of cane molasses, 3.5-4.5 parts of sodium citrate, 4-6 parts of ferrous carbonate, 5-10 parts of fumed silica, 7-13 parts of calcium sulphoaluminate, 4-8 parts of polyvinyl alcohol, 10-15 parts of acetylene sludge and 4.5-6.5 parts of aids. The water reducing agent is high in water reducing ratio, low in slump loss, obvious in enhancement effect and excellent in working performance, the coagulation time of concrete can be obviously delayed, and after the concrete is doped, the water reducing agent is high in pumpability, high in cohesiveness, high in durability, low in gas content and low in bleeding rate and has high economic benefits and social benefits.

Description

Efficient retarding and water reducing agent

Technical field

The present invention relates to a kind of efficient retarding and water reducing agent, belong to concrete admixture field.

Background technology

Concrete admixture, is called for short admixture, refers to before mixing concrete mixing or in mix process, mixes to improve the material of concrete performance.Because admixture can improve concrete performance effectively, and have good economic benefit, be all widely used in many countries, the application in engineering more and more comes into one's own, and becomes material indispensable in concrete.Wherein retardation water reducing agent is the one in concrete admixture, and it can delay concrete coagulating time, makes the fresh concrete long period keep plasticity, convenient cast, improve operating efficiency, can not cause detrimentally affect to later concrete properties simultaneously, and have water-reduction concurrently.The retardation water reducing agent that used in the market exists the not obvious and low shortcoming of water-reducing rate of retarding effect, cannot meet the requirement of high-strength high-performance concrete.

Summary of the invention

To the object of the invention is the defect existing in prior art in order solving, a kind of slow setting time length and the high efficient retarding and water reducing agent of water-reducing rate to be provided.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of efficient retarding and water reducing agent, is mixed by the raw material of following weight part: condensate of melamine sulfonate and formaldehyde 40-60, paracoumarone resin sodium sulfonate 25-35, W-Gum 10-15, Sunmorl N 60S 8-12, Xylitol 2-4, calcium superphosphate 4-8, ethylene diamine tetra methylene phosphonic acid sodium 3-6, ester gum 2-3, trolamine 3-5, cane molasses 4-7, Trisodium Citrate 3.5-4.5, iron protocarbonate 4-6, gas-phase silica 5-10, calcium sulphoaluminate 7-13, polyvinyl alcohol 4-8, carbide slag 10-15, auxiliary agent 4.5-6.5;

Described auxiliary agent is made up of the raw material of following weight part: magnesia 10-15, Humic acid Magnesium 3-6, ammonium benzoate 2-4, α-sodium olefin sulfonate 6-12, myo-Inositol hexaphosphate 1.5-2.5, iso-butylene triethoxyl silane 3-5, poly-ferric chloride 5-10, germanite powder 12-18, titanium dioxide 5-10, myristyl glucoside 1-2, polyamide wax 4-6, lithium magnesium silicate 2-3, tea saponin 1.5-2.5;

Above-mentioned magnesia, germanite powder, titanium dioxide are mixed, then add α-sodium olefin sulfonate, iso-butylene triethoxyl silane, polyamide wax, lithium magnesium silicate, under 40-60 DEG C of bath temperature, stir 10-15min, after being cooled to normal temperature, add remaining raw material, stir, dry, obtain described auxiliary agent.

Beneficial effect of the present invention:

Water reducer water-reducing rate of the present invention is high, little loss of slump, reinforced effects is obvious, excellent working performance, can significantly delay concrete time of coagulation, mix that pumpability is good after concrete, cohesiveness strong, good endurance, air content is low, bleeding rate is little, has good economic benefit and social benefit.

Embodiment

A kind of efficient retarding and water reducing agent, is mixed by the raw material of following weight (kg): condensate of melamine sulfonate and formaldehyde 50, paracoumarone resin sodium sulfonate 30, W-Gum 12, Sunmorl N 60S 10, Xylitol 3, calcium superphosphate 6, ethylene diamine tetra methylene phosphonic acid sodium 4, ester gum 2.5, trolamine 4, cane molasses 6, Trisodium Citrate 4, iron protocarbonate 5, gas-phase silica 8, calcium sulphoaluminate 11, polyvinyl alcohol 6, carbide slag 12, auxiliary agent 5.5;

Described auxiliary agent is made up of the raw material of following weight part: magnesia 15, Humic acid Magnesium 5, ammonium benzoate 3, α-sodium olefin sulfonate 10, myo-Inositol hexaphosphate 2, iso-butylene triethoxyl silane 4, poly-ferric chloride 7, germanite powder 16, titanium dioxide 8, myristyl glucoside 1.5, polyamide wax 5, lithium magnesium silicate 3, tea saponin 2;

Above-mentioned magnesia, germanite powder, titanium dioxide are mixed, then add α-sodium olefin sulfonate, iso-butylene triethoxyl silane, polyamide wax, lithium magnesium silicate, under 60 DEG C of bath temperatures, stir 10min, after being cooled to normal temperature, add remaining raw material, stir, dry, obtain described auxiliary agent.

It is as shown in the table that the above-mentioned efficient retarding and water reducing agent making mixes salient features detected result in concrete:

Claims (1)

1. an efficient retarding and water reducing agent, it is characterized in that, mixed by the raw material of following weight part: condensate of melamine sulfonate and formaldehyde 40-60, paracoumarone resin sodium sulfonate 25-35, W-Gum 10-15, Sunmorl N 60S 8-12, Xylitol 2-4, calcium superphosphate 4-8, ethylene diamine tetra methylene phosphonic acid sodium 3-6, ester gum 2-3, trolamine 3-5, cane molasses 4-7, Trisodium Citrate 3.5-4.5, iron protocarbonate 4-6, gas-phase silica 5-10, calcium sulphoaluminate 7-13, polyvinyl alcohol 4-8, carbide slag 10-15, auxiliary agent 4.5-6.5;

Described auxiliary agent is made up of the raw material of following weight part: magnesia 10-15, Humic acid Magnesium 3-6, ammonium benzoate 2-4, α-sodium olefin sulfonate 6-12, myo-Inositol hexaphosphate 1.5-2.5, iso-butylene triethoxyl silane 3-5, poly-ferric chloride 5-10, germanite powder 12-18, titanium dioxide 5-10, myristyl glucoside 1-2, polyamide wax 4-6, lithium magnesium silicate 2-3, tea saponin 1.5-2.5;

Above-mentioned magnesia, germanite powder, titanium dioxide are mixed, then add α-sodium olefin sulfonate, iso-butylene triethoxyl silane, polyamide wax, lithium magnesium silicate, under 40-60 DEG C of bath temperature, stir 10-15min, after being cooled to normal temperature, add remaining raw material, stir, dry, obtain described auxiliary agent.