Gyllah ash is a solid waste that is urgently needed in the production of thermal power plants in the production process of thermal power plants. Because the ash contains a large amount of active silicon oxide and active aluminum, it can be with CA (OH) 2 at normal temperature at normal temperature. The volcanic ash reaction is generated to generate calcium-sized calcium hydraulic silicate (C-S-W). Therefore, most of the powder ash is used to prepare inorganic gel materials. Building putty powder is mainly made of inorganic gel material cement and organic gel materials that can be dispersed. The building coatings with glue solidification functions are prepared. The use of flour ash instead of some cement preparation can not only reduce product costs , And can also use solid waste comprehensive, with obvious economic and social protection benefits. Research on the use of powder coal ash instead of cement preparation of putty powder has been reported, how to further increase the amount of powder and coal ash is the research direction of flour and coal -based putty powder, while the depth activation of the ash ash is further improved The key to the ratio. Studies have shown that ultra -micro -powder can further enhance the gel activity of flour and coal ash. In view of this, this test studies the characteristics of ultra -micro crushing powder and coal ash instead of cement preparation of putty powder, in order to further enhance the amount and putty powder of flour ash in putty powder in putty powder, and provide ideas.
The raw materials mainly include uncompressed powder, coal ash, ultra -micro crushing flour ash, 42.5 cement, decentralized latex powder, hydroxyl methyl cellulose ( HPMC), anti -foam agent. Among them, the flour ash is taken from a power plant in Taiyuan (050 \u003d 31.5 岬), and the ultra -micro crushed powder coal ash is obtained by the ultra -microcomposter crusher (050 \u003d 9.50 PM), and 42.5 cement comes from Shanghai Conch cement Co., Ltd. Responsible company; hydroxylopymethyl cellulose HPMC) from Shijiazhuang Honglai Cellulin Co., Ltd., with a viscosity of 100,000 MPA-S; decentralized latex powder comes from Shandong Crystagan Research Institute, model YXF-2019-166; elimination The foaming agent comes from Ming Ling, Germany, and the model is P803.
Put the flour ash in the supersonic steam crusher for ultra -micro crushing and prepare powder coal ash super micro -microflower.
Charactering the drying time of the salon gel materials of the salon pink gel material), construction performance, water resistance, alkaline resistance, low temperature storage stable stability The impact of sexual, polishing, and cracking resistance, but the adhesive strength and flexibility of the putty gel coagulation have a greater impact. When the amount of powder and coal ash instead of the cement increase to 70%before the ultra -micro crushing, the putty powder gel condenser The performance of the test parts meets the national standard building exterior wall for the putty JG/T 157-2009, and when the amount of powder and coal ash instead of the cement increase to 50%before the ultra-micro crushing Optimization, especially the adhesive strength index and flexibility indicator.
The impact of the mixing amount of powder and coal ash after ultra-micro crushing is 55 g, and regulatory Copygenia cellulose is 0.4 g and decentralized latex powder to 1-0 gUnder the same conditions of 0.1 g, the matte coal ash and cement ratio after the ultra -micro -crusted and the cement were inspected 0: 100, 10: 90, 30: 70, 50: 50, 70: 30, 90 10, and and and. At 100 0, the characteristic changes of the characteristics of powder coal -based putty powder after the super microcritical crushing.
After the super microcritical crushing increases, the amount of powder and coal ash is increased, and the construction performance of the putty powder gradually improves. The dry time, water resistance, alkaline resistance, low temperature storage stability, polishing, crack resistance There is no obvious change, and the flexibility and adhesive strength of the putty powder changes obviously. When the super micro-crushing increases the amount of cement to 70%, the performance of the putty gel condensate test parts of the putty pink gel condensate can meet the national standard building exterior wall. When the amount of cement is increased to 50%, the performance of the putty pink gel condensate test is optimized as a whole, especially the adhesive strength index and flexibility indicator.
When the amount of flour ash is less than 70%, the flexibility of the putty of putty powder gel condensate is developing in the direction of improvement. The flexibility indicator of putty pink gel test parts is reduced from 100 mm to 50mm, and the flexibility has been significantly improved. In addition, from the adhesive strength data in Table 2 and Table 3, under the same amount of amount, the adhesive strength of the corresponding putty powder gel test parts before and after the mixing conditions has changed significantly. Powder adhesion intensity has increased overall. The amount of mixing and coal ash is less than 70%. After the ultra -micro crushing, the adhesion intensity of the corresponding test parts of the powder and coal ash has increased significantly. It is 15.3%O. This may be due to the super -microcraimant treatment, the particle size of the ash ash has become thinner, which is more increased than the surface area. It is more conducive to the volcanic ash reaction of silicon oxide and active aluminum aluminum oxide and aluminum aluminum, thereby increasing the intensity of the gel condensate. It makes the putty of putty powder is not easily destroyed by external forces, which improves the flexibility and adhesion strength of the putty powder. Differential changes in the adhesion intensity of the test piece before and after the super micro -crushing of the ash.
Use powder and coal ash instead of 50%cement to prepare the exterior wall of the building to use putty powder, which can improve and improve the performance indicators of putty powder, especially the flexibility and adhesive strength, reduce the cost of putty powder, expand the powder and coal ash ash Utilizing the way; on the premise of meeting the standard JG/T 157-2009, the proportion of powder and coal ash can be increased to 70%; the use of ultra-micro crushing processing methods can be used to make super microclicage on the ash The flexibility and adhesion strength of the piece shows a broad application prospect.