Laboratory Experimental Research on Foamed Warm Mix Asphalt Mixture Road Property

Gao, Kaikai; Chen, Fang; Kuai, Haidong; Yang, Z. X.; Si, Yi; Huo, Zhiqiang

doi:10.1088/1757-899x/774/1/012072

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…The mixing temperature and compaction temperature are determined by the chart, so the rotational viscosity of the mixing temperature must be 0.17 ± 0.02 Pa·s, and the rotational viscosity of the compaction temperature must be 0.28 ± 0.02 Pa·s [ 34 ]. Table 5 and Figure 1 show the results of the rotational viscosity tests obtained by mixing (M) and compacting (C) temperatures.…”

Section: Resultsmentioning

confidence: 99%

High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt

Sun

2021

Materials

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The mixture of styreneic methyl copolymers (SMCs) normal temperature-modified asphalt and styrene-butadiene styrene block copolymer (SBS)-modified asphalt (SMCSBS) compound-modified asphalt was investigated in this study. The viscosity and temperature properties of compound modified asphalt (SMCSBS) were studied by Brookfield rotary viscosity test. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) were used to test SMCSBS compound modified asphalt with different SMC additions. Finally, the microstructure and physicochemical properties of SMCSBS were evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the modification mechanism of the SMCSBS was studied. The results show that the viscosity of the compound-modified asphalt added with SMC is improved, which is conducive to improving its workability. With the increase of SMC content, the high-temperature performance of the compound modified asphalt firstly increases and then decreases with the increase of SMC content. When the content of SMC is 12%, its high-temperature performance is the best. Compared with SBS-modified asphalt, the SMCSBS has better low-temperature performance, and the creep stiffness S and creep rate m of the SMC with different content are better than that of SBS. Finally, the microcosmic characteristics show that the SMC can give full play to its characteristics and can be uniformly dispersed in SBS modified asphalt. SMC is essentially a surfactant, which can reduce the viscosity and construction temperature by changing the surface tension and surface free energy of asphalt molecules. The curing agent of epoxy resin is slowly cross-linked and cured after contacting with air to form a certain strength, thus improving the road performance of the asphalt mixture.

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Section: Resultsmentioning

confidence: 99%

High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt

Sun

2021

Materials

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“…The material design must meet several characteristics and behavior, economics, and environmental impact [3]. The elements of Asphalt Concrete consist of several properties that must be met, including stability, flexibility, durability, resistance to melting, workability, impermeability, and surface fatigue [4]. Stability in road pavement is defined as the ability of paved mixtures to resist changes due to load.…”

Section: Introductionmentioning

confidence: 99%

Increasing the Stability of Asphalt Concrete Mixture Using Crumb Rubber

et al. 2021

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Stability is a measure of the strength of an asphalt mixture in resisting deformation due to loading. If a road construction structure cannot withstand the existing load, it will result in road damage that endangers road users. This study aims to improve the stability of the asphalt concrete mixture with the use of crumb rubber. Crumb rubber is used because it has good resistance and elasticity. The research was conducted experimentally by making test objects in the laboratory. In this study, five variations crumb rubber (2%, 4%, 6%, 8%, and 10% of the weight asphalt mixture) were carried out with the size of the powder retained on a 40 sieve. Marshall test and analysis of volumetric was carried out to determine the characteristics of the asphalt-concrete mixture. The results showed that the highest Marshall stability was obtained at 10% crumb rubber with a stability value of 1422 kg. The use of rubber powder can significantly increase the strength and quality of the asphalt-concrete mixture. Thus, crumb rubber can be used, and this percentage can be used as a reference in the manufacture of asphalt-concrete mixtures in order to obtain good road pavement quality.

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Laboratory Experimental Research on Foamed Warm Mix Asphalt Mixture Road Property

Cited by 2 publications

References 6 publications

High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt

High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt

Increasing the Stability of Asphalt Concrete Mixture Using Crumb Rubber

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