Research on the properties of rubber concrete containing surface-modified rubber powders

He, Liang; Cai, Haodong; Huang, Yong; Ma, Yong; Bergh, Wim van den; Gáspár, László; Valentin, Jan; Vasiliev, Yu. E.; Kowalski, Karol J.; Zhang, Junhui

doi:10.1016/j.jobe.2020.101991

Cited by 51 publications

(29 citation statements)

References 19 publications

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“…Many scholars in the field of civil engineering combine the advantages of rubber materials and consider from the perspective of practical engineering problems, mixing rubber into concrete to prepare rubber concrete with special properties. Compared with ordinary concrete, rubber concrete has good properties of fatigue resistance, damping energy consumption, elastic damping, anti-permeability, impact resistance, etc., with broad application prospects [ 15 , 16 , 17 , 18 , 19 ]. On the other hand, promoting the engineering application of rubber concrete can better solve the “black pollution” caused by waste tire rubber, making rubber concrete a hot spot for scholars at home and abroad [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Rubber Content on Chloride Salt Corrosion Resistance Performance of Concrete

Pang

Huang

2021

Materials

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In order to enhance the corrosion resistance of concrete to chloride salt, 5% NaCl solution was used to corrode ordinary concrete (OC) and rubber concrete (RC) with 5%, 10%, and 15% rubber content, respectively. By testing the compressive strength, mass, chloride ion concentration at different depths and relative dynamic elastic modulus, the erosion mechanism was analyzed by means of SEM scanning and EDS patterns, and the mechanical properties and deterioration degree of ordinary concrete (OC) and rubber concrete (RC) under the corrosion environment of chloride salt were studied. The results show that: the quality of rubber mixed into concrete increases first and then decreases, and rubber can increase the compressive strength of concrete, improve its internal structure. At the same time, the mechanical properties of concrete in the corrosion environment of chloride salt are improved to a certain extent, and the deterioration degree is reduced. Considering the comprehensive performance of OC and RC in the dry–wet alternation mechanism under chloride salt corrosion, the best content of rubber is 10%.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Rubber Content on Chloride Salt Corrosion Resistance Performance of Concrete

Pang

Huang

2021

Materials

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“…For the pre-coating CR, water and 3 µm limestone powder were mixed in a Hobart mixer at a low speed [46]. He et al [114] in their paper excavated the engineering application potential of rubberized concrete by using urea solution which could be beneficial for application in CRC to improve the mechanical strength and impact resistance. However, it is well-known that urea (CO(NH 2 ) 2 ), a chemical compound that provides reagents for calcium carbonate formation, is already among the most used precursors being added to the biological culture medium for some decades [115][116][117].…”

Section: Cr Pre-treatmentmentioning

confidence: 99%

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Kara De Maeijer,

Craeye,

Blom

et al. 2021

Infrastructures

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This state-of-the-art review was aimed to conduct a comprehensive literature survey to summarize experiences of crumb rubber (CR) application in concrete within the last 30 years. It shows that certain gaps prevent obtaining a coherent overview of both mechanical behaviour and environmental impact of crumb rubber concrete (CRC) to object to the stereotypes which prevent to use of CR in concrete in the construction industry. Currently, four major barriers can be distinguished for a successful CR application in the concrete industry: (1) the cost of CR recycling, (2) mechanical properties reduction, (3) insufficient research about leaching criteria and ecotoxicological risks and (4) recyclability of CRC. The application of CR in concrete has certainly its advantages and in general cannot be ignored by the construction industry. CR can be applied, for example, as an alternative material to replace natural aggregates and CRC can be used as recycled concrete aggregates (RCA) in the future. A certain diversity for the CR application can be introduced in a more efficient way when surface treatment and concrete mix design optimization are properly developed for each type of CR application in concrete for possible field applications. The role of CRC should not be limited to structures that are less dependent on strength.

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“…Considering the maximum utilization of waste CR, high volume crumb rubber asphalt (HVRA) is prepared by pretreatment of CR, and the CR content is more than 20%. The ordinary CR pretreatment methods for HVRA can be summarized including thermal-mechanical methods and chemical methods [ 20 , 21 , 22 , 23 , 24 , 25 ]. Zhang et al prepared waste CR by a twin-screw extrusion method, and the CR content was as high as 20–40% [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Micro-Mechanism and High- and Low-Temperature Rheological Properties of Disintegrated High Volume Crumb Rubber Asphalt (DHVRA)

Han

et al. 2021

Materials

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The aims of this paper are to prepare disintegrated high volume crumb rubber asphalt (DHVRA) with low viscosity, good workability and low-temperature performance by adding disintegrating agent (DA) in the preparation process, and to further analyze the disintegrating mechanism and evaluated high-temperature and low-temperature rheological properties. To obtain DHVRA with excellent comprehensive performance, the optimum DA dosage was determined. Based on long-term disintegrating tests and the Fluorescence Microscopy (FM) method, the correlations between key indexes and crumb rubber (CR) particle diameter was analyzed, and the evaluation indicator and disintegrating stage division standard were put forward. Furthermore, Fourier transform infrared spectroscopy (FT-IR) and Gel Permeation Chromatography (GPC) was used to reveal the reaction mechanism, and the contact angle test method was adopted to evaluate the surface free energy (SFE). In addition, the high-temperature and low-temperature rheological properties were measured, and the optimum CR content was proposed. Results indicated that the optimum DA dosage was 7.5‰, and the addition of DA promoted the melt decomposition of CR, reduced the viscosity and improved the storage stability. The 135 °C rotational viscosity (RV) of DHVRA from mixing for 3 h could be reduced to 1.475 Pa·s, and the softening point difference was even less than 2 °C. The linear correlation between 135 °C RV and the diameter of CR particle in rubber asphalt system was as high as 0.968, and the viscosity decay rate (VDR) was used as the standard to divide the disintegrating process into a fast disintegrating stage, stable disintegrating stage and slight disintegrating stage. Compared to common rubber asphalt (CRA), DHVRA has an absorption peak at 960 cm−1 caused by trans olefin = C-H, and higher molecular weight and polar component of surface energy. Compared with CRA, although the high-temperature performance of DHVRA decreases slightly, the low-temperature relaxation ability can be greatly improved.

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Research on the properties of rubber concrete containing surface-modified rubber powders

Cited by 51 publications

References 19 publications

Experimental Study on the Influence of Rubber Content on Chloride Salt Corrosion Resistance Performance of Concrete

Experimental Study on the Influence of Rubber Content on Chloride Salt Corrosion Resistance Performance of Concrete

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Evaluation of Micro-Mechanism and High- and Low-Temperature Rheological Properties of Disintegrated High Volume Crumb Rubber Asphalt (DHVRA)

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