Modification of rubber particles and its application in rubberized concrete

Dou, Yueming; Feng, Gangying; Xu, Lifeng; Yang, Yi; Zhang, Zhenqian; You, Liru; Zhong, Shuangling; Gao, Yan; Cui, Xuejun

doi:10.1016/j.jobe.2022.104346

Cited by 10 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This decrease can be attributed to the inherent characteristics of rubber particles, which possess low strength and high elasticity 30 . Additionally, the adhesion between the rubber particles and the concrete matrix was poor, when rubber particles are mixed with concrete as fine aggregate, the specimen exhibits reduced compressive strength 31,32 . However, upon the addition of 0.1% fiber, the compressive strength of specimen PRC-3 increased by 11% compared to PRC-1.…”

Section: Stress-strain Curvesmentioning

confidence: 99%

Study on static and dynamic mechanical properties and microstructure of silica fume-polypropylene fiber modified rubber concrete

Han,

Pang,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Through tests and micro-observations, the static and dynamic mechanical properties and microstructure of rubber concrete samples modified with varying amounts of silica fume and polypropylene fiber content were explored. The results indicate that incorporation of silica fume and polypropylene fiber can effectively enhance the performance of rubber concrete. Moreover, at 10% and 0.1% of silica fume and polypropylene fiber content respectively, rubber concrete’s compressive strength, splitting tensile strength, flexural strength, and dynamic compressive strength reached maxima. Furthermore, microstructure characteristic analysis indicated that inadequate adhesion between rubber particles and the matrix is responsible for compromised bearing capacity in unmodified rubber concrete. However, with the addition of silica fume and polypropylene fiber, the fiber binds the rubber particles closely with the matrix, while the silica fume fills the gaps between the matrix components. This combination results in rubber concrete with a denser internal structure and enhances its bearing capacity significantly.

show abstract

Section: Stress-strain Curvesmentioning

confidence: 99%

Study on static and dynamic mechanical properties and microstructure of silica fume-polypropylene fiber modified rubber concrete

Han,

Pang,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Pre-coated rubber crumbs with OPC paste slightly improved the strength of rubberised concrete, whilst the ether solution reduced the strength of rubberised concrete [28]. The rubber particles coated with silica powder and water glass demonstrated better bonding strength with concrete [29].…”

Section: Introductionmentioning

confidence: 97%

Thermal and Mechanical Properties of Concrete Incorporating Silica Fume and Waste Rubber Powder

et al. 2022

View full text Add to dashboard Cite

Using waste rubber tires for concrete production will reduce the demand for natural aggregate and help to reduce environmental pollution. The main challenge of using waste rubber tires in concrete is the deterioration of mechanical properties, due to poor bonding between rubber and cement matrix. This research aims to evaluate the mechanical and thermal properties of rubberised concrete produced by using different proportions of rubber powder and silica fume. Ordinary Portland cement was partially replaced with silica fume by amounts of 5%, 10%, 15% and 20%, while sand was replaced by 10%, 20% and 30% with waste rubber powder. Tests were carried out in order to determine workability, density, compressive strength, splitting tensile strength, elastic modulus, thermal properties, water absorption and shrinkage of rubberised concrete. The compressive strength and splitting tensile strength of concrete produced using waste rubber powder were reduced by 10–52% and 9–57%, respectively. However, the reduction in modulus of elasticity was 2–36%, less severe than compressive and splitting tensile strengths. An optimum silica fume content of 15% was observed based on the results of mechanical properties. The average shrinkage of concrete containing 15% silica fume increased from −0.051% to −0.085% at 28 days, as the content of waste rubber powder increased from 10% to 30%. While the thermal conductivity of rubberised concrete was reduced by 9–35% compared to the control sample. Linear equations were found to correlate the density, splitting tensile strength, modulus of elasticity and thermal conductivity of concrete with silica fume and waste rubber powder.

show abstract

“…The effects of water saturation and strain rate on the impact toughness of geopolymer concrete were studied. Multiple studies have also demonstrated that adding rubber to concrete can enhance the impact resistance of normal concrete [16,17].…”

Section: Introductionmentioning

confidence: 99%

Rubberized Concrete: Effect of the Rubber Size and Content on Static and Dynamic Behavior

Du,

Yang,

Cao

et al. 2024

Buildings

View full text Add to dashboard Cite

Rubberized concrete (RC) has received widespread attention due to its energy absorption and crack resistance properties. However, due to its low compressive strength, it is not recommended for structural applications. The rubber size and content affect RC’s mechanical properties. This study investigated and formulated the behavior of RC with different particle sizes and contents under dynamic and static loading. Quasi-static compressive and dynamic tests were conducted on RC with varying content of rubber (0–30%) and rubber sizes (0.1–20 mm). It was found that the rubber particle size was 0.5mm and the rubber content was 2%. An equation was derived from the experimental data to forecast the impact of rubber size and content on compressive strength. Additionally, by combining the literature and this research’s data, a model was established based on neural networks to predict the strength of RC. SHPB tests were carried out to study the stress–strain curves under dynamic load. The peak stress, fragment analysis, and energy absorption of RC with varying content of rubber and rubber sizes at three different strain rates (100 s−1, 160 s−1, and 290 s−1) were investigated. Equations describing the relationship between dynamic increase factor (DIF), rubber material content, and strain rate on different particle sizes were obtained by fitting. The DIF increased as the content of the rubber increased. By analyzing energy absorption data, it was found that the optimal ratio for energy absorption was RC-0.5-30, RC-0.1-30, and RC-10-30 at strain rates of 100 s−1, 160 s−1, and 290 s−1. This study could be a good guideline for other researchers to easily select the content and size of the rubber in RC for their applications. It also has a positive significance in promoting the development of green building materials.

show abstract

Modification of rubber particles and its application in rubberized concrete

Cited by 10 publications

References 21 publications

Study on static and dynamic mechanical properties and microstructure of silica fume-polypropylene fiber modified rubber concrete

Study on static and dynamic mechanical properties and microstructure of silica fume-polypropylene fiber modified rubber concrete

Thermal and Mechanical Properties of Concrete Incorporating Silica Fume and Waste Rubber Powder

Rubberized Concrete: Effect of the Rubber Size and Content on Static and Dynamic Behavior

Contact Info

Product

Resources

About