Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil blends in tropical climate
https://orcid.org/0000-0003-1017-2239
Highlights Cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) was studied. Temperature profile of highway pavement structure in tropical climate was presented. High temperature adversely affected the strength and stiffness of cement-stabilized RAP-MLS blends. Increases in MLS and cement contents can reduce the viscoelasticity of RAP aggregate. Relationships between E 50 and ITS versus UCS were given.
Abstract This article investigated the effects of temperature on the variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) as a sustainable bound base course of flexible pavement. A site investigation to assess the temperature profile of highway pavement in the northeast of Thailand was conducted to find the temperature variation of pavement structure in tropical country. Laboratory tests including unconfined compressive strength (UCS), modulus of elasticity (E 50), and indirect tensile strength (ITS) tests were conducted on cement-stabilized RAP and MLS blends at varying mix proportions and temperatures. It is evident that the temperature significantly affects the strength and stiffness of specimens containing RAP due to the presence of bitumen covering the RAP aggregate. The additional MLS and cement can reduce the viscoelasticity of RAP aggregate. The strength reduction due to the temperature is characteristic of the RAP mixtures with MLS and cement. The normalized relationships of UCS and temperature and the empirical correlations between E 50 and ITS versus UCS were presented. This set of relationships is a valuable tool for the mix design of cement-stabilized RAP and MLS blends as a bound base course in tropical countries.
Variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil blends in tropical climate
https://orcid.org/0000-0003-1017-2239
Highlights Cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) was studied. Temperature profile of highway pavement structure in tropical climate was presented. High temperature adversely affected the strength and stiffness of cement-stabilized RAP-MLS blends. Increases in MLS and cement contents can reduce the viscoelasticity of RAP aggregate. Relationships between E 50 and ITS versus UCS were given.
Abstract This article investigated the effects of temperature on the variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) as a sustainable bound base course of flexible pavement. A site investigation to assess the temperature profile of highway pavement in the northeast of Thailand was conducted to find the temperature variation of pavement structure in tropical country. Laboratory tests including unconfined compressive strength (UCS), modulus of elasticity (E 50), and indirect tensile strength (ITS) tests were conducted on cement-stabilized RAP and MLS blends at varying mix proportions and temperatures. It is evident that the temperature significantly affects the strength and stiffness of specimens containing RAP due to the presence of bitumen covering the RAP aggregate. The additional MLS and cement can reduce the viscoelasticity of RAP aggregate. The strength reduction due to the temperature is characteristic of the RAP mixtures with MLS and cement. The normalized relationships of UCS and temperature and the empirical correlations between E 50 and ITS versus UCS were presented. This set of relationships is a valuable tool for the mix design of cement-stabilized RAP and MLS blends as a bound base course in tropical countries.
Variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil blends in tropical climate
https://orcid.org/0000-0003-1017-2239
Highlights Cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) was studied. Temperature profile of highway pavement structure in tropical climate was presented. High temperature adversely affected the strength and stiffness of cement-stabilized RAP-MLS blends. Increases in MLS and cement contents can reduce the viscoelasticity of RAP aggregate. Relationships between E 50 and ITS versus UCS were given.
Abstract This article investigated the effects of temperature on the variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement (RAP) and marginal lateritic soil (MLS) as a sustainable bound base course of flexible pavement. A site investigation to assess the temperature profile of highway pavement in the northeast of Thailand was conducted to find the temperature variation of pavement structure in tropical country. Laboratory tests including unconfined compressive strength (UCS), modulus of elasticity (E 50), and indirect tensile strength (ITS) tests were conducted on cement-stabilized RAP and MLS blends at varying mix proportions and temperatures. It is evident that the temperature significantly affects the strength and stiffness of specimens containing RAP due to the presence of bitumen covering the RAP aggregate. The additional MLS and cement can reduce the viscoelasticity of RAP aggregate. The strength reduction due to the temperature is characteristic of the RAP mixtures with MLS and cement. The normalized relationships of UCS and temperature and the empirical correlations between E 50 and ITS versus UCS were presented. This set of relationships is a valuable tool for the mix design of cement-stabilized RAP and MLS blends as a bound base course in tropical countries.
Variations in strength and stiffness of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil blends in tropical climate
Suebsuk, J. (Autor:in) / Kampala, A. (Autor:in) / Waiyakorn, P. (Autor:in) / Suksiripattanapong, C. (Autor:in) / Chindaprasirt, P. (Autor:in)
01.11.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
<italic>a</italic> , First material parameter for the relationship between normalized unconfined compressive strength and temperature , <italic>A*</italic> , First material parameter for general strength relation of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil , <italic>AS</italic> , Bitumen content , <italic>b</italic> , Second material parameter for the relationship between normalized unconfined compressive strength and temperature , <italic>B*</italic> , Second material parameter for general strength relation of cement-stabilized reclaimed asphalt pavement and marginal lateritic soil , <italic>C</italic> , Cement content , CBR , California bearing ratio , <italic>D</italic> , Specimen diameter , DOH , Department of Highway, Thailand , <italic>E<inf>50</inf></italic> , Modulus of elasticity , <italic>H</italic> , Specimen height , ITS , Indirect tensile strength , <italic>k</italic> , Degradation parameter , LS , Lateritic soil , LS100 , Sample ID indicated that the specimen was composed of 100% MLS , MLS , Marginal lateritic soil , <italic>P<inf>max</inf></italic> , Maximum load , <italic>q<inf>u</inf></italic> , Unconfined compressive strength tested at <italic>T</italic>C , <italic>q<inf>u,25°C</inf></italic> , Unconfined compressive strength tested at 25°C , RAP , Reclaimed asphalt pavement , R**LS♣♣ , Sample ID indicated that **% reclaimed asphalt pavement mixed with ♣♣% marginal lateritic soil , SR , Strength reduction ratio , <italic>T</italic> , Test temperature , UCS , Unconfined compressive strength , <italic>w/C</italic> , Water-to-cement ratio , Cement stabilization , Base course , Temperature effect , Tropical climate
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