36results about How to "Solve bleeding" patented technology

The present invention discloses an adhesion promoter of a cement-based material and the preparing method and the use thereof, the invention is the adhesion promoter of the cement-based material which is obtained using the papermaking waste liquor, extracting the methyphenylpropane of the phenol-containing hydroxyl group, generating esterifying reaction with the carboxyl monomer under the functionof the catalyst and then copolymerizing with the carboxyl acid, or graft-copolymerizing with the acidamide substance and ahs a comb-shaped structure. When the adhesion promoter is mixed into the cement-based material the appropriate thickness and workability can be endowed to the cement-based material, the mixed water is leaded to be uniformly distributed in the cement-based material and can be kept stable for a long time without discharging out, at the same time the adhesion promoter of the invention increases the viscosity of the paste and leads to that the particles of aggregate is not easily moved thereby effectively preventing the disengagement and facilitating that the cement-based material always keeps better homogeneity.

The invention discloses a preparation method of a thickener used for self-compact concrete. The method comprises the following steps: 1, weighing 2-acrylamide-2-methylpropanesulfonic acid and acrylic acid in proportion, processing to prepare an aqueous solution, and adjusting the pH value to 6.5-7.0; 2, adding a prepared monomer acrylamide solution with the concentration of 25-35% while stirring, uniformly stirring, dumping the obtained mixed solution into a flask, carrying out constant temperature water bath, and introducing nitrogen for protection; and 3, adding an initiator in a dropwise manner when the reaction temperature rises to 30-40DEG C, carrying out heat insulation at 40DEG C, carrying out a stirring reaction for about 1.5-2h, stopping the introduction of nitrogen when reactants are a viscous liquid, and carrying out constant temperature slaking for a period of time to obtain a white transparent colloid which is the thickener. The thickener obtained in the invention is used for preparing the self-compact concrete, has a good water solubility and a good thickening effect, can effectively improve the plastic viscosity of the self-compact concrete, and solves the water segregation and separation problems of the self-compact concrete.

The present invention is in the field of coloring of surimi seafood products. It relates to a coloring formulation comprising carmine. The invention also provides a process for producing the formulation.

The invention relates to the technical field of mixing piles, and discloses a reducing mixing pile machine. The reducing mixing pile machine comprises a machine base, a tower, a mixing head and a lifting mechanism. The tower is fixed to the machine base. The mixing head is hoisted on the tower through the lifting mechanism. The mixing head comprises a drill pipe, a rotation driving mechanism and a telescopic mechanism. The drill pipe comprises an outer pipe and an inner pipe, and the inner pipe is sleeved with the outer pipe. A grout spraying nozzle is arranged on the front portion of the inner pipe. The rotation driving mechanism is connected with the outer pipe and the inner pipe. The telescopic mechanism drives the inner pipe and the outer pipe to relatively move. The outer pipe is provided with an outer pipe radial ring, and an inner pipe radial ring is arranged on the front portion of the inner pipe. A slidable transition sleeve is further arranged on the front portion of the inner pipe and provided with an upper radial ring and a lower radial ring, and the upper radial ring and the lower radial ring can rotate relatively. At least one mixing blade set is hinged between the outer pipe radial ring and the upper radial ring, and at least one mixing blade set is hinged between the inner pipe radial ring and the lower radial ring. Each mixing blade set comprises at least one mixing blade. Each mixing blade comprises a first blade body and a second blade body hinged to the first blade body. The invention further provides a pile forming construction method and the drill pipe.