consolidating recycled concrete aggregates using phosphate

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Consolidating recycled concrete aggregates using

Mar 10, 2019  Phosphate solution is used to treat recycled concrete aggregate (RCA). • Hydroxyapatite is produced by the treatment, consolidating the porous mortar layer of the RCA. • Microstructure and quality of RCA are significantly improved by the treatment. • The compressive strength of the concrete using RCA has been improved up to 19% by the ...

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Consolidating recycled concrete aggregates using

h i g h l i g h t s Phosphate solution is used to treat recycled concrete aggregate (RCA). Hydroxyapatite is produced by the treatment, consolidating the porous mortar layer of the RCA.

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Jialai Wang's lab University of Alabama (UA)

Consolidating recycled concrete aggregates using phosphate solution ... to 19% by the proposed treatment. a b s t r a c t Recycled concrete aggregates (RCAs) have inferior qualities compared with ...

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‪Yi Fang‬ - ‪Google Scholar‬

Consolidating recycled concrete aggregates using phosphate solution L Wang, J Wang, Y Xu, L Cui, X Qian, P Chen, Y Fang Construction and Building Materials 200, 703-712 , 2019

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王亮-土木建筑学院 - tmxy.aust.cn

Jul 27, 2021  Consolidating Recycled Concrete Aggregates Using Phosphate Solution [J]. Construction and Building Materials, 2019, 200, 703-712. [SCI ,中科院 1 区,专业 Top 期刊] [4] Liang Wang, Jialai Wang, Xin Qian, Yi Fang, Peiyuan Chen, Atolo Tuinukuafe. Tea stain-inspired treatment for fine recycled concrete aggregates [J].

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Enhancing the accelerated carbonation of recycled

Apr 10, 2020  1. Introduction. As the notion of sustainable urban development has gained increasing popularity worldwide, the interest of using recycled concrete aggregates (RCAs) in the construction industry is increasing , .But the incorporation of RCAs in concrete would result in certain negative effects on the concrete properties due to its higher porosity and water absorption, and lower mechanical ...

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Properties of Concrete Prepared with Recycled

Jul 03, 2019  Recycled aggregates have high water absorption and crushing index. In order to improve the properties of recycled aggregates in concrete production, various treatments were used to modify the aggregates. In recent years, bio-deposition as a new treatment method of recycled aggregates was environmentally friendly. An improved method of bio-deposition was implemented to modify the

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Durability of Sustainable Self-Consolidating Concrete ...

Supplementary cementitious materials such as fly ash, silica fume and ground granulated blast furnace slag (GGBS) have been used widely to partially replace cement in producing self-consolidating concrete (SCC). The production of cement is associated with emission of significant amounts of CO2 and increases the human footprint on the environment.

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Effect of magnesium phosphate cement on the mechanical ...

Nov 13, 2021  This paper aims to investigate the effects of magnesium phosphate cement (MPC) on the mechanical properties and microstructure of recycled aggregates (RA) and recycled aggregate concrete (RAC). Two surface modification methods, namely, the MPC wet and dry mix methods, were designed and applied to improve physical properties of RA, respectively.

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Improving the Durability Properties of Self-Consolidating ...

Feb 17, 2021  The paper evaluates the durability properties of Self-Consolidating Concrete (SCC) containing fine and coarse recycled concrete aggregates. The SCC mixtures were made with 0%, 25%, 50%, 75% and 100% substitution of Fine Natural Aggregates (FNA) with Fine Recycled Concrete Aggregates (FRCA) whereas Coarse Natural aggregates (CNA) were partially substituted (50%) with

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Effect of biomass Ash, foundry sand and recycled concrete ...

Oct 15, 2021  Consolidating recycled concrete aggregates using phosphate solution Construction and Building Materials , 200 ( 2019 ) , pp. 703 - 712 Article Download PDF View Record in

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Development of Self Consolidating Concrete (SCC) Using ...

Concretes were mixed with 50% of the coarse aggregate replaced by recycled aggregates (Patagonia gravel) and with 20% of the fine aggregate (natural sand) replaced by crushed concrete powders.

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Steam-cured recycled aggregate concrete incorporating ...

Apr 11, 2019  Therefore, since the past few decades major technological advancement has been seen in construction materials including (i) use of alternative binders like geopolymers , magnesium phosphate cement [4, 5], and magnesium oxychloride cement [6, 7], (ii) use of supplementary cementing materials in concrete [8, 9], and (iii) use of waste or recycled ...

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美国阿拉巴马大学土木建筑与环境工程学院王家来教授讲学通知

May 24, 2019  (1) Liang Wang, Jialai Wang*, Ying Xu, Liyun Cui, Xin Qian, Peiyuan Chen, Yi Fang, 2019, Consolidating recycled concrete aggregates using phosphate solution. Construction and Building Materials 200, 703–712.

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Durability of Sustainable Self-Consolidating Concrete ...

Supplementary cementitious materials such as fly ash, silica fume and ground granulated blast furnace slag (GGBS) have been used widely to partially replace cement in producing self-consolidating concrete (SCC). The production of cement is associated with emission of significant amounts of CO2 and increases the human footprint on the environment.

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Liang WANG Anhui University of Science and Technology ...

h i g h l i g h t s Phosphate solution is used to treat recycled concrete aggregate (RCA). Hydroxyapatite is produced by the treatment, consolidating the porous mortar layer of the RCA.

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美国阿拉巴马大学土木建筑与环境工程学院王家来教授讲学通知

May 24, 2019  (1) Liang Wang, Jialai Wang*, Ying Xu, Liyun Cui, Xin Qian, Peiyuan Chen, Yi Fang, 2019, Consolidating recycled concrete aggregates using phosphate solution. Construction and Building Materials 200, 703–712.

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MATERIAL SPECIFICATION FOR AGGREGATES - CONCRETE

The Owner may reject the use of any concrete aggregate on the basis of past field performance in a ny structure or pavement of any age. 1002.05.02 Fine Aggregate : ... Mineral fillers shall be limited to use in -consolidating concreteself When. mineral fillers are added to the mix, they shall be inert, non-plastic, free of clay, and added as a ...

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Properties of Concrete Prepared with Recycled Aggregates ...

Jul 03, 2019  Recycled aggregates have high water absorption and crushing index. In order to improve the properties of recycled aggregates in concrete production, various treatments were used to modify the aggregates. In recent years, bio-deposition as a new treatment method of recycled aggregates was environmentally friendly. An improved method of bio-deposition was implemented to modify the

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Construction and Building Materials Vol 265, 30 December ...

select article New aggregate grading models for low-binder self-consolidating and semi-self-consolidating concrete (Eco-SCC and Eco-semi-SCC) ... select article Water distribution characteristics and research with capillary absorption for magnesium phosphate cement-coated cement pastes ... Influence factors on using recycled concrete aggregate ...

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Advanced Materials Research Vols. 261-263 Scientific.Net

The results of experiments show that there are some key indexes including the bibulous rate of brick aggregates, particle gradations and water consumption, and the optimal size of the brick aggregates ranges from 9.5 mm to 19 mm, and the mechanical properties of recycled concrete are slightly below the referenced concrete by lots of experiments.

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EP2067753A1 - Concrete Mix - Google Patents

A concrete mix comprising hydraulic cementitious material, aggregates and water, wherein at least a portion of the aggregates in the total mix is coated externally with a well-bonded polymer layer of at least 1 µm in average thickness, said layer comprising a polymer having a high elongation and high energy-absorption capacity at the temperatures at which the concrete is designed to be used.

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Steam-cured recycled aggregate concrete incorporating ...

Apr 11, 2019  Therefore, since the past few decades major technological advancement has been seen in construction materials including (i) use of alternative binders like geopolymers , magnesium phosphate cement [4, 5], and magnesium oxychloride cement [6, 7], (ii) use of supplementary cementing materials in concrete [8, 9], and (iii) use of waste or recycled ...

Get Price

Durability of Sustainable Self-Consolidating Concrete ...

Supplementary cementitious materials such as fly ash, silica fume and ground granulated blast furnace slag (GGBS) have been used widely to partially replace cement in producing self-consolidating concrete (SCC). The production of cement is associated with emission of significant amounts of CO2 and increases the human footprint on the environment.

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Journal of Advances in Civil Engineering Materials - ASTM

Effects of Aggregate Properties on Rheology of Self-Consolidating Concrete A One Year Investigation of Self-Compacting Concrete With Recycled Asphalt Pavement Performance Characteristics of Blended Cementitious Systems Incorporating Chemically Transformed Rice Husk Ash

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Civil, Architectural and Environmental Engineering Masters ...

Bioaccessibility of lead from contaminated soil using phosphate treatment ... Influence of mix design parameters on dynamic segregation of self-consolidating concrete and consequences on performance of precast beams, ... Bond performance of recycled aggregate concrete, Amanda Renee Steele. PDF.

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Advanced Materials Research Vols. 261-263 Scientific.Net

The results of experiments show that there are some key indexes including the bibulous rate of brick aggregates, particle gradations and water consumption, and the optimal size of the brick aggregates ranges from 9.5 mm to 19 mm, and the mechanical properties of recycled concrete are slightly below the referenced concrete by lots of experiments.

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Murat Tuyan (0000-0003-2149-8437) - ORCID

Properties of self-consolidating concrete incorporating coarse recycled concrete aggregate,Właściwości betonu samozagęszczającego się zawierającego kruszywo grube z odpadowego betonu. Cement, Wapno, Beton 2017 Journal article EID: 2-s2.0-85029500974. Show more detail ...

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Cement and Concrete Research - Academic Accelerator

Evaluation of the concrete prisms test method for assessing the potential alkali-aggregate reactivity of recycled concrete aggregates: ... Experimental and numerical study of the relative humidity effect on drying shrinkage and cracking of self-consolidating concrete: ... Investigation of magnesium phosphate cement hydration in diluted ...

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‪Dr. Kanish Kapoor‬ - ‪Google Scholar‬

10. 2020. Effect of recycled aggregates on fresh and hardened properties of self compacting concrete. K Kapoor, SP Singh, B Singh, P Singh. Materials Today: Proceedings 32, 600-607. , 2020. 7. 2020. Sustainable deployment of crushed concrete debris and geotextile to

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Construction and Building Materials - Academic Accelerator

The construction materials and technology covered include: cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibres, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials and railway material applications.The scope of ...

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Concrete aggregate definition of concrete aggregate by ...

Glow-in-the-dark concrete took the stage with new research in self-consolidating concrete, portland cement/limestone blends, and recycled concrete aggregates in ready mixed concrete, and it's all illuminating the future of cast-in-place. ... natural coarse aggregate and recycled concrete aggregate. Table 3 shows the sieve analysis results of ...

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Materials Bulletins - FDOT

Jun 02, 2021  Materials Bulletins are issued primarily by the Director, Office of Materials. This action is taken when immediate implementation is needed, i.e., such as to implement a mandatory legislative change, FHWA directive, judicial court ruling, Department policy, or other sensitive issue. The document has temporary authority and shall expire one year ...

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Evaluation of the Fresh and Hardened Properties of Steel ...

Mar 16, 2014  Reference studied the fresh and hardened properties of SCC using recycled concrete aggregates as both coarse and fine aggregates states. Three series of SCC mixtures were prepared with 100% coarse recycled aggregates, and different levels of fine recycled aggregates were used to replace river sand.

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Concrete Design Production - Portland Cement Association

Coarse aggregate consists of either (or a combination of) gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed concrete, with particles generally larger than 0.2 inches. The maximum size of the coarse aggregates is generally in the range of 3/8 to 1 ½ inches. Read more on why we use aggregates in concrete.

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Production of Bioreceptive Concrete - Structville

Oct 11, 2021  Additionally, crushed expanded clay was used to replace the large diameter aggregates in order to improve the porosity of the mix. Expanded clay aggregate Instead of using phosphorus, the researchers investigated the use of cow bone ash which has been applied in several research works as a partial replacement for cement in concrete production.

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