5X sand making machine improve the performance of the dry mo
Posted: 2013 04 18 Source: Kefid Shanghai Machinery Views: 619
With the development of science and technology,dry mortar system is basically mature,including a series of products such as dry mortar,adhesive mortar,plaster mortar,tile adhesive mortar,pointing mortar,self-leveling mortar,wall putty,plaster,etc.
The raw materials of dry mortar are configured in the following materials:
Cement:type(ordinary Portland cement,aluminate cement,sulfur aluminate cement),label (32.5/42.5/52.5).
Sand:washed sand,quartz sand,sand crusher,mine tailings.
Filler:TSP,fly ash, slag, silica fume.
Cellulose ethers:varieties(MC the HPMC, HEMC),viscosity.
The powder:type(ethylene vinyl acetate(EVA),acrylic acid,styrene-butadiene,versatate-ethylene-vinyl acetate terpolymer),the film forming temperature, glass transition temperature,etc.
Others: water reducer,early strength agent,antifreeze,anti-foaming agents,thixotropic agents,air-entraining agents,fibers,lignin and so on.
The quality of the sand will determine the performance of the dry mortar. Existing engineering practice, the preparation of artificial sand from C10-C70 ordinary concrete and concrete pumping, pumping the maximum height is up to 400m; preparation of prestressed concrete beams span of 64m. The design strength C100 concrete 90 days actual strength 155MPpa of in laboratory. This proves that the artificial sand can completely replace the natural sand used in mortar, concrete and other cement products.
Another artificial sand will inevitably produce a certain amount of powder, but it should be moderate.The sand grain is uniform, dust content to make up for the preparation of natural sand in poor workability defects. At the same time, it mixed with the perfect special fine aggregate grading, to improve the compactness of mortar and concrete and benefit to reduce the amount of cement and significantly reduce water retention the added amount of thickening material.It not only improve the overall performance of the role, but also reduces the cost of production of the mortar.
