The Preparation of Coating Material by Modified Asphalt Waterproof Roll Material

Abstract

Abstract-In order to enlarge the utilization of the Buton rock asphalt, reduce the cost of polymer modified asphalt waterproofing roll materials, After mixing Buton rock asphalt into matrix asphalt, adding polymer SBS modifier, and prepare composite modified Buton rock asphalt, Then add the suitable amount of naphthenic oil, PP, talcum powder to prepare coating material by modified asphalt waterproof roll material. So, determine the experiment conditions of SBS and BRA composite modified asphalt, and the size of BRA should be selected within 0.075mm.The mixed BRA replacing part of the SBS modifier plays great role, not only reduces the cost of production, also improve the performance of the modified asphalt.Keywords-modified asphalt; waterproof roll material; Buton rock asphalt; coating material Waterproof materials of building industry have developed rapidly in our country, the structure of product also have very largely changes, the proportion of modified asphalt waterproofing materials in the waterproofing material market is bigger and bigger. However the high cost of polymer modified asphalt waterproofing materials affects its popularization and application [1][2], so the development of cost-effective of modified asphalt waterproofing materials becomes particularly important.Natural asphalt has a wide distribution in the world, and belongs to the same nature material with the petroleum asphalt, and have similar chemical structure and properties. With the shortage of oil resources in today's, the use of natural asphalt replacing part of the matrix asphalt, not only reduces the cost of asphalt, also is more of great significance for the development of new energy, at the same time, the addition of natural asphalt can improve the matrix asphalt aging resistance properties [3]. Although the researches on the application of the natural asphalt at home and abroad are not uncommon, it is generally used in asphalt pavement engineering [4][5][6], and application scope is limited. Therefore, this research use Buton rock asphalt which is belongs to natural asphalt (BRA) to modify the matrix asphalt and then prepare waterproofing roll materials, planing to expand its range of application.Elastomer modified asphalt waterproof roll material is consisting of three parts which are coating materials, surface segregation materials and base material. While the coating material is made of asphalt, modifier and auxiliary solvent, filler,etc [7].After mixing Buton rock asphalt into matrix asphalt, get the Buton rock modified asphalt, then add polymer SBS(styrene-butadiene-styrene block copolymer) modifier, and according certain formula[8] to prepare waterproofing roll materials.Compared with SBS modified asphalt, the mixed BRA replacing part of the SBS modifier plays a role, not only reduces the cost of production ,and improve the heat resistance and segregation resistance of modified asphalt, also improve the performance of the modified asphalt. Due to the 70% composition of Buton rock is carbonate, so more than of carbonate rock...