Abstract: The invention relates to a bitumen/polymer composition and to its process of manufacture. The bitumen/polymer composition includes first bitumen base having an intrinsic stability S of greater than 2.5 and/or a degree of peptization Sa of greater than 0.60, and a second bitumen base having an intrinsic stability S of less than or equal to 2.50 and/or a degree of peptization Sa of less than or equal to 0.60, an elastomer and an olefinic polymer adjuvant functionalized by at least glycidyl functional groups. The values of intrinsic stability S and of the degree of peptization Sa are measured according to the standard ASTM D 7157-12. The bitumen/polymer composition exhibits improved low-temperature mechanical properties.

Abstract: The invention relates to a bitumen/polymer composition and to its process of manufacture. The bitumen/polymer composition includes first bitumen base having an intrinsic stability S of greater than 2.5 and/or a degree of peptization Sa of greater than 0.60, and a second bitumen base having an intrinsic stability S of less than or equal to 2.50 and/or a degree of peptization Sa of less than or equal to 0.60, an elastomer and an olefinic polymer adjuvant functionalized by at least glycidyl functional groups. The values of intrinsic stability S and of the degree of peptization Sa are measured according to the standard ASTM D 7157-12. The bitumen/polymer composition exhibits improved low-temperature mechanical properties.

Abstract: The disclosure includes the use in a bituminous composition of an organogelator derivative which has a molar mass no higher than 2,000 g/mol and includes at least one hydrogen bonds donor D, at least one hydrogen bonds acceptor A and at least one compatibilizer agent C in the bitumen, the compatibilizer agent C including a group selected among: at least one straight hydrocarbon chain including at least 4 carbon atoms, or at least one aliphatic cycle of 3 to 8 atoms, or at least one aromatic cycle, or at least one aliphatic or partly aromatic, or even entirely aromatic, condensed polycyclic system, each cycle including 5 or 6 atoms taken alone or as a mixture, to improve the resistance to aggressive chemical agents, in particular to hydrocarbons, such as gasolines, diesels and/or kerosenes, excluding N,N?-ethylene bis(stearamide) and excluding fatty-chains polyamines obtained by reacting polyalkylene fatty-chains polyamines of general formula (I) R—NH—(CH2—CH2—CH2—NH)n—H wherein R is a linear hydrocarbon ch

Abstract: The present disclosure relates to the use of 2 to 6% by mass of Fischer-Tropsch waxes in a cross-linked bitumen/polymer composition for improving the cross-linked bitumen/polymer composition's resistance to aggressive chemical agents.

Abstract: The disclosure includes a process for preparing cross-linked bitumen/polymer compositions without adding a cross-linking agent, the process comprising contacting at least one bitumen with at least one polymer, and subjecting a mixture of the bitumen and the polymer to electromagnetic wave radiation in a high frequency and/or microwave range.

Abstract: The disclosure includes the use in a bituminous composition of an organogelator derivative which has a molar mass no higher than 2,000 g/mol and includes at least one hydrogen bonds donor D, at least one hydrogen bonds acceptor A and at least one compatibilizer agent C in the bitumen, the compatibilizer agent C including a group selected among: at least one straight hydrocarbon chain including at least 4 carbon atoms, or at least one aliphatic cycle of 3 to 8 atoms, or at least one aromatic cycle, or at least one aliphatic or partly aromatic, or even entirely aromatic, condensed polycyclic system, each cycle including 5 or 6 atoms taken alone or as a mixture, to improve the resistance to aggressive chemical agents, in particular to hydrocarbons, such as gasolines, diesels and/or kerosenes, excluding N,N?-ethylene bis(stearamide) and excluding fatty-chains polyamines obtained by reacting polyalkylene fatty-chains polyamines of general formula (I) R—NH—(CH2—CH2—CH2—NH)n—H wherein R is a linear hydrocarbon ch

Abstract: The present disclosure relates to the use of 2 to 6% by mass of Fischer-Tropsch waxes in a cross-linked bitumen/polymer composition for improving the cross-linked bitumen/polymer composition's resistance to aggressive chemical agents.

Abstract: The present disclosure relates to the use of at least one fatty acid derivative of general formula (1) in a bituminous composition for improving their resistance to aggressive chemical agents, and in particular to hydrocarbons, such as gasolines, gas oils and/or kerosenes, general formula (1) being: with, when n is equal to 0, an X group chosen from the NH2 or NHR3 groups and when n is equal to 1, an X group which represents the —NH—(CH2)m—NH— group, the R1, R2, R3 groups being, independently of each other, saturated or unsaturated, linear or branched hydrocarbon groups with 8 to 24 carbon atoms, m being between 1 and 8.

Abstract: The disclosure relates to a method for preparing crosslinked bitumen/polymer compositions without using any crosslinking agent, wherein at least one bitumen and at least one polymeric composition including at least 80% by mass with respect to the mass of the polymeric composition, of a diblock copolymer of a monovinylaromatic hydrocarbon block and of a conjugate diene block having a molecular mass greater than or equal to 80,000 g mol?1 a content of 1-2 double bond units coming from the conjugate diene greater than or equal to 15% by mass with respect to the total mass of the conjugate diene units, are brought into contact, optionally with stirring, at a temperature between 180° C. and 220° C. for a period of 4 hours to 48 hours.

Abstract: The disclosure relates to a cross-linking composition in pellet form including at least one polymer matrix, at least one cross-linking agent and at least one hydrogen sulphide inhibiting agent, the hydrogen sulphide inhibiting agent including at least one zinc carboxylate and at least one triazine derivative. It also relates to its preparation method.