Benefits Many kinds of research efforts demonstrate that by modifying bitumen with polymer additives we can make a PMB – polymer modified bitumen, which under stress behaves as reinforced material. Included additives are structure-forming; they disperse or create their own structure in the bitumen. The polymer frame limits, on the one hand, flow at higherRead More
The durability of roads depends on the quality of the materials used for road construction. GlobeCore is organizing a free webinar for all engineers and technicians to discuss the new methods of production and use of bitumen emulsion for maintenance and construction of roads. This event is totally free, and we hope it will expandRead More
Dear associates! You are invited to participate in another free GlobeCore webinar themed as “Production of Modified Bitumen: the Modern Approach” which will take place on July 21–22, 2021. At this webinar, we will discuss the following matters: advantages and special features of using modified bitumen; technical specifications and quality of road bitumen; technology andRead More
The first patent for modifying bitumen with natural rubber was registered almost 170 years ago. Ironically, it took another 150 years before the modified road bitumen has taken a worthy place in road construction. There were a couple of reasons for this.. Firstly, the traffic loads on roadway are ever-increasing. Secondly, large polymeric materials areRead More
Either air blown bitumen or modified bitumen can be used for production of bitumen shingles. The question is which material is better. Modified bitumen is a mix containing various modifiers for performance improvement. In recent years there is an emerging trend: manufacturers of roofing materials prefer modified bitumens to air blown bitumens more often thanRead More
Modern road construction places high demands on the quality of materials. This is especially true for the binders used in preparation of asphalt mixtures. Pavements made from traditional bitumen can not cope with modern density and intensity of traffic. Scientists assess the durability of pavements with bitumen-mineral composition, at only 50-70% of normative durability. LowRead More
A runway is the most important part of any airport. Runways can be unpaved, gravel, asphalt or concrete. Unpaved runways cannot be operated in rainy weather, making the use of such facilities quite limited. Considering the loads and the high pressures on the runway, asphalt mix or concrete is mostly used for modern runway construction.Read More
To improve properties of bitumen for roofing applications, three modifiers are used most often: atactic polypropylene (APP), styrene butadiene styrene (SBS) and ethylene-propylene-butene (EPB). Bitumen, modified with APP, does not have disadvantages characteristic to common bitumen materials: low flexibility at subzero temperatures and aging tendency. Atactic polypropylene is an elastic material with similar properties asRead More
The modern roofing material market is quite diverse. Nevertheless bitumen-polymer mastics attract attention among other materials. Physically, this compound is a liquid, viscous and uniform mass, which after surface application hardening becomes solid coating. Polymer bitumen roofing mastic is mostly used for construction and maintenance of roofs, as well as waterproofing. Depending on application mode,Read More
There has been an increased amount of heavy load carrying vehicles using our main roadway systems. The heavy, and often overweight vehicles is one of the main reasons for the deformation of the bitumen/asphalt based road systems. The properties of bitumen are modified by the addition of special polymer additives. A “Modified Bitumen” product isRead More
Bitumen is a unique blend of hydrocarbons and their derivatives that are widely used in construction, from residential and industrial structures to highways and runways. While bitumen can be replaced with materials of similar composition, replacing it with something of similar cost is virtually impossible. Bitumen has been used in construction for centuries. During thisRead More
Silica gel – is a product obtained by dehydration of sodium silicate. This substance exhibits the best absorption capacity with moisture content 5-7%,. After drying silica gel resembles a glassy solid mass with high porousness. Exactly this property, as well as its mechanical strength are the reasons for the continuing research in new methods ofRead More
