A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Shrinkage-inhibiting elastic-toughness rubber asphalt material for repairing pavement cracks
The invention discloses a self-expanding rubber asphalt material used for crack grouting and filling of an asphalt pavement. The self-expanding rubber asphalt material is prepared from matrix asphalt, waste tire rubber powder, an expansion material, a styrene thermoplastic elastomer and diatomite. The self-expanding rubber asphalt material is prepared by the following steps: heating the matrix asphalt in a premixing tank, then adding the waste tire rubber powder to uniformly stir, throwing the styrene thermoplastic elastomer into the premixing tank, and uniformly mixing under stirring to obtain a mixture; grinding the mixture in a colloid mill for several times, and then continuously stirring for 1-2 hours; and adding the expansion material and the diatomite to continuously stir for 1-2 hours and performing cooling to obtain the target material. According to the self-expanding rubber asphalt material provided by the invention, the waste tire rubber powder, the expansion material, the styrene thermoplastic elastomer and the diatomite are adopted for compound modification of the matrix asphalt, and the prepared self-expanding rubber asphalt material used for crack grouting and filling of the asphalt pavement has extremely good self-expanding properties when being used for early repair of cracks of the pavement, thereby effectively playing a waterproof role; and the self-expanding rubber asphalt material has excellent tensile properties and resilience properties, excellent bonding properties and excellent high and low temperature performance FIGURES OF THE SPECIFICATION Evaluation Indexes Example 1 Example 2 Performance Low-temperature tensile passed passed passed test Cone penetration (0.1 45 52 30-70 mm) Softening point (C) 87 81 80 Flowing value (mm) 2.5 3.7 5 Elastic recovery 63 58 30-70 (25°C) % Figure 1.
Shrinkage-inhibiting elastic-toughness rubber asphalt material for repairing pavement cracks
The invention discloses a self-expanding rubber asphalt material used for crack grouting and filling of an asphalt pavement. The self-expanding rubber asphalt material is prepared from matrix asphalt, waste tire rubber powder, an expansion material, a styrene thermoplastic elastomer and diatomite. The self-expanding rubber asphalt material is prepared by the following steps: heating the matrix asphalt in a premixing tank, then adding the waste tire rubber powder to uniformly stir, throwing the styrene thermoplastic elastomer into the premixing tank, and uniformly mixing under stirring to obtain a mixture; grinding the mixture in a colloid mill for several times, and then continuously stirring for 1-2 hours; and adding the expansion material and the diatomite to continuously stir for 1-2 hours and performing cooling to obtain the target material. According to the self-expanding rubber asphalt material provided by the invention, the waste tire rubber powder, the expansion material, the styrene thermoplastic elastomer and the diatomite are adopted for compound modification of the matrix asphalt, and the prepared self-expanding rubber asphalt material used for crack grouting and filling of the asphalt pavement has extremely good self-expanding properties when being used for early repair of cracks of the pavement, thereby effectively playing a waterproof role; and the self-expanding rubber asphalt material has excellent tensile properties and resilience properties, excellent bonding properties and excellent high and low temperature performance FIGURES OF THE SPECIFICATION Evaluation Indexes Example 1 Example 2 Performance Low-temperature tensile passed passed passed test Cone penetration (0.1 45 52 30-70 mm) Softening point (C) 87 81 80 Flowing value (mm) 2.5 3.7 5 Elastic recovery 63 58 30-70 (25°C) % Figure 1.
Shrinkage-inhibiting elastic-toughness rubber asphalt material for repairing pavement cracks
WANG XIAOFENG (author) / YANG BO (author) / WANG ZHEN JUN (author) / WANG SHIFENG (author) / WAN CHENGUANG (author) / LIU JIANFEI (author) / LI HAO (author)
2021-05-13
Patent
Electronic Resource
English
ASPHALT PAVEMENT REPAIRING MATERIAL AND ASPHALT PAVEMENT REPAIRING METHOD
| European Patent Office | 2022
Deep filling device for repairing asphalt pavement cracks
| European Patent Office | 2023
Device capable of rapidly repairing asphalt pavement cracks
| European Patent Office | 2024
Crack pouring device for repairing asphalt pavement cracks
| European Patent Office | 2023