The Application of Rubber Aggregate-Combined Permeable Concrete Mixture in Sponge City Construction

Qi, Bowen; Gao, Shouwu; Pang, Xu

doi:10.3390/coatings13010087

Cited by 29 publications

(12 citation statements)

References 28 publications

(33 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Equation ( 2), K 30 represents the infiltration efficiency of rainfall for 30 min, m 30 represents the water output (g) at this moment, and ρ w represents the density of water, which is taken as 1 g/cm 3 . The test definition of water retention is the material particles between the voids existing and surface water absorption pores in the rainfall stagnation of rainwater, using volume water retention rate to characterize [23][24][25][26][27][28][29]. Volumetric water retention is the ratio of the volume of the structural layer of the material to the amount of water retained, while the amount of water retained is the difference between the total amount of water that comes out and the total amount of rainfall at each moment.…”

Section: Test Methods and Proceduresmentioning

confidence: 99%

Analysis of the Infiltration and Water Storage Performance of Recycled Brick Mix Aggregates in Sponge City Construction

Pang

2023

Water

Self Cite

View full text Add to dashboard Cite

With the gradual advancement of urbanization, urban hardened roofs and pavements are increasing, and the rainwater cycle is being seriously damaged; sponge city construction has become an inevitable trend to address this problem. The analysis of the infiltration and storage performance of recycled brick aggregate, which is highly absorbent and can be used as a permeable paving material in sponge cities, is of great significance. The study firstly designed a simulated rainfall test device, then carried out tests in terms of aggregate gradation, aggregate type, and aggregate grade, and finally analyzed its effect on the void structure and infiltration and water storage performance of recycled brick mix aggregates. The outcomes demonstrate that the particle size of recycled brick concrete aggregate is positively related to the water storage capacity, and the volume water storage rate of recycled sand is close to 26%. The fitting result of 1 h water storage rate under different dosage is 0.984. After 1 h of rainfall, the water storage rate is 3 times that of natural aggregate, and the volume water absorption rate is 2.5 times that of natural aggregate. This indicates that recycled brick concrete aggregate has strong permeability and water storage properties and has great potential for application in sponge city construction, and the study provides a reference for the optimal design of subsequent cities.

show abstract

Section: Test Methods and Proceduresmentioning

confidence: 99%

Analysis of the Infiltration and Water Storage Performance of Recycled Brick Mix Aggregates in Sponge City Construction

Pang

2023

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, the rapid advancement of urbanization has led to a sharp increase in building density and land surface coverage, triggering a transformation in the urban surface water circulation system and frequent occurrence of internal flooding [1]. Porous concrete, known for its excellent permeability and drainage capacity [2][3][4][5], is typically composed of cement mortar and aggregates and widely applied in areas such as parking lots, permeable road surfaces, and riverbank slopes [6][7][8][9][10]. With its unique porous structure, porous concrete plays a crucial role in mitigating urban flood risks and alleviating the urban heat island effect [11,12].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Porous Concrete Based on Geopolymer of Red Mud and Yellow River Sediment

Lv,

Chen,

Dai

et al. 2024

Materials

View full text Add to dashboard Cite

Red mud (RM) and Yellow River sediment (YRS) are challenging to handle as waste materials. In this study, RM with geopolymer and heavy metal adsorption characteristics was combined with YRS and ground granulated blast furnace slag (GGBS) to develop a porous geopolymer with high strength and high adsorption performance. A geopolymer cementitious material with high strength was prepared using high temperature water bath curing of 90 °C and different dosages of YRS, and a porous geopolymer concrete was further prepared. The compressive strength, fluidity and setting time of geopolymer cementitious materials were tested, and the compressive strength, porosity and permeability of porous geopolymer concrete were also tested. The environmental impact assessment of geopolymer cementitious materials was further conducted. The hydration products and microstructure of geopolymer gel materials were analyzed by XRD, SEM and FT-IR tests. The results show that the addition of YRS can effectively prolong the setting time of the geopolymer cementitious material, and the enhancement rate is as high as 150% compared with the geopolymer cementitious materials without the addition of YRS. An appropriate amount of YRS can improve the compressive strength of the geopolymer cementitious materials, and its early compressive strength can be further improved under the high temperature water bath curing of 90 °C, and the compressive strength at an age of 3 d can be up to 86.7 MPa. Meanwhile, the compressive strength of porous geopolymer concrete at an age of 28 d is up to 28.1 MPa. YRS can participate in geopolymer reactions, and high temperature water bath curing can promote the reaction degree. Curing method and YRS dosages have little effect on the porosity and permeability of the porous geopolymer concrete. The porous geopolymer has a good heavy metal adsorption effect, and the alkaline pH values can be gradually diluted to neutral.

show abstract

“…Recently, researchers have been interested in producing and developing ultra‐high‐performance concrete (UHPC) properties and their applications, 1–3 in addition to studying the possibility of using nanomaterials (NMs) of industrial waste to improve concrete properties and reduce production costs 4–8 . The main distinguishing features are the superior UHPC's mechanical strength, which is not less than 150 MPa; the tensile strength, which is greater than 8 MPa at 28 days test age of; and its ultra‐durability 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…20,21 For these reasons, the researchers set out to study the possibility of reducing the cement content through partial replacement of cement with supplemental cement materials (SCMs). 19,22,23 Previous studies have indicated the possibility of using SCMs from industrial by-products, such as silica fume, 24,25 fly ash (FA), 26,27 pulverized ground granulated blast furnace slag, 3,28 ferrosilicon powder 29 and metakaolin. 30 Accordingly, many studies have used FA as SCMs to decrease the cement content consumed in UHPC and improve its properties.…”

mentioning

confidence: 99%

Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Ghanim

Amin

Zeyad

et al. 2023

Structural Concrete

View full text Add to dashboard Cite

This paper aims to study the effect of using modified nano‐TiO2 with fly ash (FA) on ultra‐high performance concrete's (UHPC) mechanical, transport, and microstructure properties (UHPC). A ball mill was used to disband the nano‐TiO2 and distribute it uniformly within the FA powder. In this research, 20% of the cement weight was replaced by FA, and nano‐TiO2 was added by 0.4%, 0.8%, 1.2%, 1.6%, and 2% of the FA weight. To investigate the effect of the ball mill period on the UHPC properties, periods of 10, 20, 30, and 40 min were applied to a binder of 20% FA and with 6% nano‐TiO2. In addition, a 30‐min ball mill period on a binder of 20% FA and 0.4%, 0.8%, 1.2%, 1.6%, and 2% nano‐TiO2 was also investigated. Tests of compressive strength after 1, 7, 28, and 91 days of curing in tap water, splitting tensile strength, flexural strength, and modulus of elasticity were performed after 28 days of curing in tap water. Tests of chloride permeability, sorptivity coefficient, water permeability, and microstructure were also performed after 28 days of curing in tap water. The results showed that the addition of higher percentages of nano‐TiO2 led to a decrease in workability. The addition of nano‐TiO2 improved the mechanical properties. The highest compressive strength of 208.9 MPa was achieved for the mixture of 20% FA with 1.2% nano‐TiO2 at the age of 28 days. The 30‐min period of application of the ball mill achieved the best performance compared with the other periods. The results of using a ball‐mill to re‐mix nano‐TiO2 between 1.2% and 2% by weight with FA showed impressive comparative results.

show abstract

The Application of Rubber Aggregate-Combined Permeable Concrete Mixture in Sponge City Construction

Cited by 29 publications

References 28 publications

Analysis of the Infiltration and Water Storage Performance of Recycled Brick Mix Aggregates in Sponge City Construction

Analysis of the Infiltration and Water Storage Performance of Recycled Brick Mix Aggregates in Sponge City Construction

Preparation and Properties of Porous Concrete Based on Geopolymer of Red Mud and Yellow River Sediment

Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Contact Info

Product

Resources

About