CN104072011A

CN104072011A - Alkali-free concrete liquid quick-setting reinforcing agent

Info

Publication number: CN104072011A
Application number: CN201410339104.5A
Authority: CN
Inventors: 潘智伟; 秦满义; 杨存义
Original assignee: SHANXI GERUITE BUILDING TECHNOLOGY Co Ltd
Current assignee: Shanxi Geruite construction Polytron Technologies Inc
Priority date: 2014-07-11
Filing date: 2014-07-11
Publication date: 2014-10-01
Anticipated expiration: 2034-07-11
Also published as: CN104072011B

Abstract

An alkali-free concrete liquid quick-setting reinforcing agent is prepared from the following material compositions in percentage by weight: 15% to 32.5% of aluminum sulfate, 1.5% to 5% of alcohol amine, 0.25% to 1% of magnesium silicate, 7.5% to 10% of amorphous aluminum hydroxide, 0.5% to 5% of formic acid, 0.5% to 1.5% of oxalic acid, 1.5% to 2.5% of quasi-boehmite, 5% to 10% of polyethylene diol, 0.05% to 0.15% of amide, and 50% of water. The alkali-free concrete liquid quick-setting reinforcing agent has the benefits that the alkali-free concrete liquid quick-setting reinforcing agent is a liquid, good in solubility, and strong in stability, and can be stored for a long time; the early strength can be grown rapidly, the strength in one day is more than 8MP, the loss of strength in 28 days can be avoided, and particularly the alkali-free concrete liquid quick-setting reinforcing agent can increase strength of types of cements by 10% to 30%; the alkali-free concrete liquid quick-setting reinforcing agent is totally chlorine-free, alkali-free and non-toxic, free of corrosion to steel, and small in mixing amount, and can enable the setting of the concrete to be quick.

Description

Concrete alkali-free liquid rapid hardening toughener

Technical field

The present invention relates to a kind of concrete additive, be specifically related to a kind of alkali-free and can make concrete rapid hardening and carry high-intensity additive.

Technical background

China carries out JC477-2005 " sprayed concrete accelerating chemicals " standard since on August 1st, 2005, has wherein added technical requirements, the experimental technique of liquid accelerator.Thereby embodied the development trend of accelerating chemicals, changed to liquid accelerator by solid powdery accelerating chemicals, at present, the liquid accelerator on market has the certain defect of self: place easily precipitation, cause Quality Down; Alkali content is too high, and corrosion reinforcing bar damages excessively to people, concrete strength is also had to bad impact; Volume is excessive, causes concrete indices all defective; High cost, unsuitable production in enormous quantities.

Summary of the invention

The object of the invention is to overcome the deficiency of currently available products, provides a kind of alkali-free rapid hardening to be conducive to improve the concrete alkali-free liquid rapid hardening toughener of concrete strength.

The technical solution used in the present invention is: a kind of concrete alkali-free liquid rapid hardening toughener, by Tai-Ace S 150, hydramine, Magnesium Silicate q-agent, unformed aluminium hydroxide, formic acid, oxalic acid, pseudo-boehmite, polyoxyethylene glycol, acid amides and water composition, it is characterized in that: the mass percent of preparing material therefor composition is: Tai-Ace S 150 15%～32.5%, acid amides 1.5%～5%, Magnesium Silicate q-agent 0.25%～1%, unformed aluminium hydroxide 7.5%～10%, formic acid 0.5%～5%, oxalic acid 0.5%～1.5%, pseudo-boehmite 1.5%～2.5%, polyoxyethylene glycol 5%～10%, acid amides 0.05%～0.15%, water 50%.

The invention has the beneficial effects as follows:

1. the present invention is liquid, and solvability is good, and stability is strong, and the shelf time is long.

2. early strength rapid development, 1 day intensity is all more than 8MP, and intensity free of losses in 28 days, even improves 10%～30% to some strength of cement.

3. totally chlorine free, alkali-free, nontoxic, corrosion-free to reinforcing bar.

4. volume is little, makes concrete coagulation fast.

Embodiment

Further illustrate the present invention below by embodiment.

Embodiment 1

The concrete alkali-free liquid rapid hardening toughener of preparing according to following weight per-cent: Tai-Ace S 150 22.5%, hydramine 4%, Magnesium Silicate q-agent 0.95%, unformed aluminium hydroxide 9%, formic acid 4%, oxalic acid 0.5%, pseudo-boehmite 1.5%, polyoxyethylene glycol 7.5%, acid amides 0.05%, water 50%.Present method can rapid coagulation in the situation that volume is little.

Embodiment 2

Tai-Ace S 150 25%, hydramine 4%, Magnesium Silicate q-agent 0.95%, unformed aluminium hydroxide 7.5%, formic acid 1%, oxalic acid 0.5%, pseudo-boehmite 2.5%, polyoxyethylene glycol 8.5%, acid amides 0.05%, water 50%.Present method is conducive to late strength of concrete and strengthens to some extent.

Embodiment 3

Tai-Ace S 150 30%, hydramine 1.5%, Magnesium Silicate q-agent 0.45%, unformed aluminium hydroxide 8%, formic acid 3%, oxalic acid 0.5%, pseudo-boehmite 1.5%, polyoxyethylene glycol 5%, acid amides 0.05%, water 50%.Present method is conducive to concrete strength enhancing in early stage.

The present embodiment and commercially available sample contrast table

?	Initial set/min	Final set/min	1d intensity/MPa	28d intensity/MPa
					Example 1	2:10	6:20	7.9	78.6
Example 2	3:20	7:40	7.7	79.4
					Example 3	2:50	7:10	8.4	78.8
Commercially available sample	4:00	9:15	7.1	75.5

Claims

1. a concrete alkali-free liquid rapid hardening toughener, by Tai-Ace S 150, hydramine, Magnesium Silicate q-agent, unformed aluminium hydroxide, formic acid, oxalic acid, pseudo-boehmite, polyoxyethylene glycol, acid amides and water composition, it is characterized in that: the mass percent of preparing material therefor composition is: Tai-Ace S 150 15%～32.5%, acid amides 1.5%～5%, Magnesium Silicate q-agent 0.25%～1%, unformed aluminium hydroxide 7.5%～10%, formic acid 0.5%～5%, oxalic acid 0.5%～1.5%, pseudo-boehmite 1.5%～2.5%, polyoxyethylene glycol 5%～10%, acid amides 0.05%～0.15%, water 50%.