| This subject is mainly the mineralogy characteristic of studying and diatomaceous earth of Lushuihe Jilin and application in the modified asphalt. Diatomaceous earth resources of our country are very abundant , has already verified 406 million tons of reserves , Jilin Province is one of the largest producing areas of the diatomaceous earth of our country too. Though the diatomaceous earth belongs to the advantage ores of resources of our country, however, the present development level is still not high, reaching the world level except a few products, the quality of most products also waits to improve, it is obvious , have important theory meaning and practical value to the further research of the diatomaceous earth.Superior physics and chemistry performance that it is light that the diatomaceous earth has qualities , the hole degree is large , the density is low , the absorbing is strong ,etc., so one important nonmetal mineral, is it is it strain pharmaceutical , catalyst and keep warm thermal insulator wait for to help to spend on usually, subject this on application of diatomaceous earth , is it modify pharmaceutical make silicon make a change the asphalt vwith use diatomaceous earth. At present, to is it modified for 3 big classes with high polymer mainly to modify asphalt, use the more one to be SBR , SBS , EVA. SBS rate of utilization in Europe is up to 44%, a large amount of is used too in our country, the high gentle low-temperature performance of SBS is very good , suitable for various kinds of climate to use, SBR is suitable for the frigid condition to use, use under EVA condition of suiting hotly. Diatom land reform pharmaceutical and polymer modify pharmaceutical compare , simple and convenient method have , favorable to to popularize, and polymer use most wide SBS modify the pharmaceutical in modifying, because compatibility is not good, it is very complicated to modify, should be with the colloidal rubing or high-speed shear equipment, so the expenses are higher. Silicon quality asphalt modify pharmaceutical whether one of good performance pitch modify the material , it is made of nonmetal ore of inorganic, the break- through and innovation on that it is asphalt to modify, it is the open-up had in application in the diatomaceous earth too.This thesis divides prefaces altogether, introduction,research of the diatomaceous earth, carrying calcining dealing with and purly diatomaceous earth, diatomaceous earth application in modified asphalt , diatomaceous earth among modified pitch modify mechanism probe into function to asphalt and conclusion 6 parts .This research carries on research to raw materials of diatomaceous earth, confirm that diatomaceous earth of Lushuihe Jilin are, diatomaceous earth, and clay layer take the form of floor output is disc algae and frank chain algae mainly each other, there is high-quality I grade diatomaceous earth that exists. The backbone of the diatomaceous earth here is the diatom, and the opal- A structure, the impurity has illite mainly, covered with and taken off stones and a small amount of kaolinite, feldspar, quartz, the weightless quantity of the sample is about 12.02%.it is to indicate to deal with to sublimate to go on to diatomaceous earth, through scrub 3 diatomaceous earth and diatomaceous earth dealt with to pickle in 4 make better result, content 80.64% of SiO2 rises to 84.18%～93.21%, the content of the clay is reduced to some extent; In calcining deal with in,getting 68.363 m2/g most than surface area at 600 ℃,hole degree is the getting higher most, non- brilliant attitude SiO2 is changed into a new phase –cristobalite in above 1100 ℃.Subject this after studying and finding by diatom land reform, needle of pitch enter degree reduce, fall as low as most getting 70 (0.01cm), is it rise a bit to soften, height 50.06 ℃most, asphalt residue stability degree of mixture move steady degree (the number of times of rut ) improve to some extent, stating the high-temperature stability on the pitch road surface, water and stability, resist the serv...
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