Pump concrete foam stabilizer and preparation method thereof
A technology for pumping concrete and foam stabilizers, which is applied in the field of building materials, can solve the problems of air content loss and workability deterioration, and achieve the effects of improving wrapping, reducing air content loss, and increasing pumpability
Inactive Publication Date: 2015-06-10
WUHAN UNIV OF TECH
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to develop a pumping concrete foam stabilizer and its preparation method, so as to effectively reduce the deterioration of workability caused by the loss of air content
Method used
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[0025] In order to further illustrate the content of the present invention, the following examples are specifically cited to describe the present invention in further detail. The examples are given by way of illustration, but in no way limit the content of the invention. The protection scope of the present invention shall be determined by the description of the claims.
[0026] A pumping concrete foam stabilizer, its molecular structure is as follows:
[0027]
[0028] Wherein: a=25-150, b=25-150, c=50-300, d=25-150, and its molecular weight is 10000-50000.
[0029] Embodiment matching is as shown in table 1, and concrete implementation process is as follows:
[0030] 1) Stir and dissolve the above-mentioned acrylamide, dimethyl maleic anhydride, hydroxyethyl acrylate, and sodium propylene sulfonate to obtain a uniform solution, then add an oxidizing agent, and stir to obtain a uniform solution;
[0031] 2) Add reducing agent and chain transfer agent mixture to the homog...
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Abstract
The invention belongs to the field of building materials, and particularly relates to a pump concrete foam stabilizer and a preparation method thereof. A molecular structure of the pump concrete foam stabilizer is shown in a formula I in the specification, wherein in the formula I, a=25-150, b=25-150, c=50-300, d=25-150, and the molecular weight is 10,000-50,000. Compared with similar products and processes, the pump concrete foam stabilizer has the advantages that 1 the foam stabilizer and a water reducing agent are compounded and mixed into cement concrete, so that the concrete peaceability can be significantly improved, the wrapping property is improved, the pumpability is increased, and meanwhile, the gas content loss can be effectively reduced, and the slump loss is reduced; and 2 the preparation technology is a one-step process and disposable feeding, is free of a dropwise adding process, free of heating, and short in reaction cycle, and can be widely applied to kinds of concrete as an auxiliary material.
Description
technical field [0001] The invention belongs to the field of building materials, and in particular relates to a pumping concrete foam stabilizer and a preparation method thereof. Background technique [0002] Concrete is a heterogeneous three-phase body, namely solid, liquid and gas. The volume occupied by the three phases of the concrete mixture is roughly, the solid phase accounts for 73% to 84% of the total volume, the liquid phase accounts for 15% to 22%, and the gas phase accounts for 1% to 5%. The volume of the three phases is not constant. During the condensation and hardening process after construction, the volume occupied by the three phases will continue to change, but after the final setting, the change decreases, showing that the total volume and liquid phase are decreasing, while the gas phase is increasing. , mainly caused by loss of liquid phase, evaporation and absorption by solid phase. However, the gas phase of fresh concrete will greatly affect the perfo...
Claims
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IPC IPC(8): C04B24/16C08F220/28C08F220/56C08F222/14C08F228/02C08F4/40C08F2/38
Inventor 谭洪波林超亮马保国戚长亚李信
Owner WUHAN UNIV OF TECH