Study on Calculation Model for Compressive Strength of Water Saturated Recycled Aggregate Concrete

Ge, Pei; Huang, Wei; Zhang, Hao; Quan, Wenli; Guo, Yuting

doi:10.1007/s12205-021-0286-4

Cited by 7 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This outcome contradicts earlier research findings suggesting that recycled aggregate diminishes concrete strength [24,25]. In this experiment, it is anticipated that with an increased mixing ratio of recycled aggregate, a larger quantity of fine powder adhered to the surface of the recycled aggregate will undergo a hydration reaction with water, leading to the generation of calcium hydroxide and a latent hydraulic reaction involving the blast furnace slag [26][27][28].…”

Section: Compressive Strengthcontrasting

confidence: 62%

Effects of the recycled coarse aggregate mixing ratio on the characteristics of concrete with different design strengths

Yoon,

Choi,

Jeon

2024

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

In this study, the characteristics of recycled aggregate concrete according to the mixing ratio of recycled coarse aggregate(RCA) were analyzed for different design strengths to explore the use of recycled materials in the production of ready-mixed concrete. The results show that, depending on the ratio of recycled aggregate, the compressive strength is similar to that of normal concrete and does not deteriorate. Therefore, it is possible to achieve a target design strength. Furthermore, if the ratio of recycled coarse aggregate for concrete is up to 25% of the total aggregate amount (50% of the total coarse aggregate), slump does not cause problems. Our findings show that the higher the design standard strength, the greater the amount of powder, and the more stringent the management of slump reduction, unit quantity, and performance necessary. The obtained results show that recycled aggregate can be used to produce ready-mixed concrete after adjusting its mixing ratio and concrete mix proportions.

show abstract

Section: Compressive Strengthcontrasting

confidence: 62%

Effects of the recycled coarse aggregate mixing ratio on the characteristics of concrete with different design strengths

Yoon,

Choi,

Jeon

2024

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

show abstract

“…The concrete stress in the saturated zone of the foundation is mainly caused by the alkali-silica reaction [Beyene & Meininger 2021]. The compressive strength of water-saturated concrete is lower than that of air-dried concrete [Ge et al 2021]. The volumetric stiffness of saturated concrete is much higher than that of dry concrete [Huang et al 2020].…”

Section: Introductionmentioning

confidence: 99%

“…Likewise, concrete that is immersed underwater tends to be stronger than concrete that sticks in the air [Wikipedia]. This statement contradicts to Ge et al, 2021 [Ge et al 2021].…”

Section: Introductionmentioning

confidence: 99%

The Evolution of Concrete (Part 1): Submerged in Water and Its Compression Strength

2022

CER

View full text Add to dashboard Cite

show abstract

Study on stress–strain relationship and constitutive model of recycled aggregate concrete under axial cyclic compression

Ge,

Song,

Zhou

et al. 2024

Structural Concrete

View full text Add to dashboard Cite

The effects of dry or saturated state, water–cement ratio, coarse aggregate type and steel fiber on the stress–strain relationship of RAC under cyclic loading were studied. What is more, the characteristics of stress–strain curve, plastic strain, stress degradation and stiffness degradation of RAC under cyclic loading were analyzed. The microstructure of RAC was analyzed. Based on the principle of surface energy, the reason for the decrease in compressive strength of wet concrete was analyzed. In addition, the envelope equation of stress–strain curve under cyclic loading, unloading and reloading curve was established. The test results showed that the peak stress of the envelope line of RAC under cyclic loading was affected by dry or saturated state, water–cement ratio and coarse aggregate type, but the addition of steel fiber could reduce the degradation rate of stress and stiffness of RAC after peak strain. The plastic strain accumulation of RAC before and after the peak stress was quite different, but dry or saturated state, water–cement ratio, coarse aggregate type and steel fiber have no obvious influence on the plastic strain accumulation of RAC. The pores and cracks of RAC provide space and channels for the moisture absorption and water absorption. The Weibull–Lognormal statistical distribution envelope model, unloading curve model and reloading curve model established were in good agreement with the experimental curves. The research results provided a reference for the study of the full curve constitutive model of RAC under cyclic loading.

show abstract

Study on Calculation Model for Compressive Strength of Water Saturated Recycled Aggregate Concrete

Cited by 7 publications

References 36 publications

Effects of the recycled coarse aggregate mixing ratio on the characteristics of concrete with different design strengths

Effects of the recycled coarse aggregate mixing ratio on the characteristics of concrete with different design strengths

The Evolution of Concrete (Part 1): Submerged in Water and Its Compression Strength

Study on stress–strain relationship and constitutive model of recycled aggregate concrete under axial cyclic compression

Contact Info

Product

Resources

About