Evaluation of crack sealant adhesion properties under complex service ambient conditions based on the weak boundary layer (WBL) theory

Cao, Liping; Yang, Chunli; Zhang, Dong; Lushinga, Nonde

doi:10.1016/j.conbuildmat.2018.12.159

Cited by 18 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The composition of 330NH18 slurry is polyether polyol 330N and hydrophobic silica: 3.7-2.8 parts.330N acetylene black pulp is composed of polyether polyol 330N and acetylene black.220H18 slurry consists of polyether polyol GE220 and hydrophobic silica.The chain extender was E-300, the defoamer was BMC806, the catalysts were FAE-1, GT-12 and WS8, the antioxidants were 1010, 168 and 1076, and the silane coupling agents were WD52, KH560 and WD60.The hydrophobic silica was HDKH18 [4]- [6] .…”

Section: Component a Materialsmentioning

confidence: 99%

Preparation and property analysis of polyether polyol two-component rubber repair material

Nie

Liu

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In order to solve the problem that the damage of rubber material cannot be repaired quickly and conveniently, this paper studies a repairing agent that is easy to use and repairs quickly.The modifier is composed of A and B components. The A component can be obtained by blending polyether polyol 330N, chain extender, diethylene glycol, 330NH18 slurry, 330N acetylene black slurry, dioctyl phthalate DOP, catalyst, antioxidant, silane coupling agent and defoaming agent at room temperature and vacuum.The mixture of polyether polyol GE220, 220H18 and dioctyl phthalate DOP, MDI-3051 and MDI-100LL at room temperature and vacuum was used to obtain component B.When using, mix A and B components by 1:0.7-1.3.The repair agent is simple to prepare and easy to use, and can be used for repairing any type of rubber damage. It is not limited by space and shape of rubber parts. It can be formed in 1 minute, have strength in 8 minutes, reach 80% strength in 2 hours and put into use.

show abstract

Section: Component a Materialsmentioning

confidence: 99%

Preparation and property analysis of polyether polyol two-component rubber repair material

Nie

Liu

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…They are used to seal cracks in the surface and to supplement expansion joints, as well as to fix small distresses. Their properties must be adapted to the nature of the job, the location where they will be used in the surface structure, and the effects of external factors [2][3][4]. The subject of the research in this article concerns a selection of the properties of hot-applied joint sealants, which are a type of thermoplastic material that requires heating and melting before application.…”

Section: Introductionmentioning

confidence: 99%

“…One of the basic parameters for joint sealants that must be ensured is good adhesion to various types of surfaces [4]. Cao E. et al [2] investigated three environmental factors, namely temperature, water, and contamination, to determine the effects of adverse environmental exposures on the various crack sealants commonly used in hot and moderate climates; they used a tensile test to illustrate adhesion failure between the sealant and the crack wall.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Hot-Applied Joint Sealants and Their Components in Terms of Their Chemical Composition and Basic Performance Properties

Stępień,

Remišová

2023

Materials

View full text Add to dashboard Cite

Hot- and cold-applied joint sealants are materials commonly used for the surface repairs of the upper layers of asphalt or concrete road surfaces. Our investigations covered six hot-applied joint sealants, classified as the high-extension type N1 (elastic) or low-extension type N2 (normal), in accordance with the standard EN 14188-1; the sealants were obtained commercially from four European manufacturers. The present paper focuses on the characterization of the consistency of the joint sealants, the bituminous binders that contain them, and the characterization of their insoluble components. Additional testing methods included an FTIR analysis of the sealants and the extracted binders, as well as SEM, EDS, and sieving analyses of the insoluble material. Joint sealants are complex formulations and include a broad range of base asphalt binders and other components. Their compositions may vary widely, while still fulfilling the performance specifications. Through the extraction of the solvents and the separation of the crack sealants, it was found that radically different compositions of crack sealants resulted in the comparatively similar performance of the tested material. The EDS and FTIR analysis methods provided insights into the composition of the crack sealants and the types of mineral materials used.

show abstract

“…Sealant can be mainly divided into three types: hightemperature heating type, normal temperature type and resin type [11]. e high-temperature heating type sealant is mainly based on modified asphalt or rubber asphalt; normal temperature type sealant is mainly based on emulsified asphalt or modified emulsified asphalt; and resin sealant is mainly based on polysulfide resin or silicone resin.…”

Section: Introductionmentioning

confidence: 99%

Effects of Dioctyl Phthalate on Performance of Asphalt Sealant

Luo¹,

Guo

Wang

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Dioctyl phthalate (DOP) was introduced into asphalt-based sealant as a plasticizer in this work. Four kinds of sealants with different DOP content were prepared, and thermal stability and low-temperature performance of five samples with asphalt as a control group were evaluated by fluidity test, softening point test, thermogravimetric-differential thermal analysis (TG-DTA), low-temperature tensile test, and differential scanning calorimeter (DSC), respectively. Furthermore, the mechanism of DOP on sealant properties was analyzed by Fourier transform infrared spectroscopy (FTIR) and fluorescence microscope. Results show that DOP can significantly improve the low-temperature performance of sealant, but slightly deteriorate the high-temperature performance. This is because DOP can supplement the light component of sealant and enhance the fluidity of the internal components. On the one hand, DOP reduces the apparent activation energy of sealant and lowers the barrier to chemical reactions, indicating that DOP is slightly detrimental to the thermal stability of sealant. On the other hand, DOP greatly reduces the glass transition temperature of sealant and improves its low-temperature performance. However, there is no evident chemical reaction between DOP and sealant, and physical effects play a major role in the effects of DOP on sealant properties. In addition, DOP can promote the expansion and cross-linking of the polymer in the sealant and ultimately enhance the compatibility between asphalt and polymer molecules. In short, DOP is recommended as a plasticizer to prepare asphalt sealants with excellent properties.

show abstract

Evaluation of crack sealant adhesion properties under complex service ambient conditions based on the weak boundary layer (WBL) theory

Cited by 18 publications

References 14 publications

Preparation and property analysis of polyether polyol two-component rubber repair material

Preparation and property analysis of polyether polyol two-component rubber repair material

Characterization of Hot-Applied Joint Sealants and Their Components in Terms of Their Chemical Composition and Basic Performance Properties

Effects of Dioctyl Phthalate on Performance of Asphalt Sealant

Contact Info

Product

Resources

About