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Aggregate Concrete Based on a 3D Model MDPI

Aggregate Concrete Based on a 3D Model MDPI

Aggregate Concrete Based on a 3D Model - MDPI

2020-1-12  Aggregate Concrete Based on a 3D Model Yao Wang 1,2,* , Huawei Zhao 1,*, Minyao Xu 1, Chunyang Wu 1, Jiajia Fu 1,3, Lili Gao 1 and Mahmoud M. A. Kamel 2,4 1 Department of Architecture and Engineering, Yancheng Polytechnic College, Jiangsu 224005, China; [email protected] (M.X.); [email protected] (C.W.); [email protected] (J.F.); [email protected] (L.G.)

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Numerical Studies on Damage Behavior of Recycled

A 3D random numerical model of recycled aggregate concrete (RAC) is established. The randomness of aggregate was obtained by using the Monte Carlo random method. The effects of the recycled aggregate substitution and adhered mortar percentage on the elastic modulus and compressive strength are explored under uniaxial compression loading.

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Numerical Study of Concrete Dynamic Splitting Based

"Numerical Study of Concrete Dynamic Splitting Based on 3D Realistic Aggregate Mesoscopic Model" Materials 14, no. 8: 1948. https://doi/10.3390/ma14081948 Find Other Styles Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers.

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Numerical Study of Concrete Dynamic Splitting Based

In mesoscopic scale, concrete is regarded as a heterogeneous three-phase material composed of mortar, aggregate and interfacial transition zone (ITZ). The effect of mesoscopic structure on the mechanical behaviors of concrete should be paid more attention. The fractal characteristics of aggregate were calculated, then the geometric models of aggregate were reconstructed by using fractal ...

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Sustainability Free Full-Text A New ... - mdpi

10 小时前  A new formulation to estimate the elastic modulus of concrete containing recycled coarse aggregate is proposed in this work using artificial neural networks (ANN) and nonlinear regression. Up to six predictors variables were used to training 243 ANN. The models were generated based on results obtained from experimental campaigns. Feedforward neural network and Levenberg–Marquardt back ...

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3D meso-scale modeling of concrete with a local

2020-10-10  The Voronoi graphic method is based on the three-dimensional Voronoi technique, which divides the geometric region of concrete specimens into several adjacent polyhedrons, and then separates these polyhedrons by “shrinking” to obtain solitary polyhedrons to

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Aggregate-bed 3D concrete printing with cement

2020-10-1  Aggregate-bed 3DCP process A schematic of the proposed aggregate-bed 3D concrete printing process is illustrated in Fig. 1. The system comprises three key components: aggregate feeder, paste feeder and blade. The aggregate feeder is used to store and spread a certain amount of aggregates to each layer.

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Optimising the Complex Refractive Index Model for ...

2021-2-16  to reality. To increase the complexity of the model and be more realistic, a three dimensional (3D) concrete model was created including a realistic GSSI-like antenna. Aggregates come in different distribution types, shapes and forms. In reality, ag-

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1,* and Martin Classen 1,2, - MDPI

2021-2-6  Hardened 3D Printed Concrete The term 3D printed concrete or digital manufactured concrete is widely used in the ongoing research publications and industry. However, a closer look reveals that due to the propagated aggregate sizes, several printable concrete mixtures from the literature should be actually specified as mortars.

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On the Use of Machine Learning Models for ... - MDPI

2021-2-9  In this work, four representative ML models, i.e., Linear Regression (LR), Support Vector Regression (SVR), Extreme Gradient Boosting (XGBoost), and Artificial Neural Network (ANN), are trained and used to predict the compressive strength of concrete based on

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3d microstructure simulation of reactive aggregate in ...

3d microstructure simulation of reactive aggregate in concrete from 2d images as the basis for asr simulation. Xiujiao Qiu ... this paper proposed a model that simulates the microstructures of the alkali-reactive aggregate based on 2D images. Five representative 3D microstructures with different pore and quartz fractions were simulated from SEM ...

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Thermal expansion prediction of cement concrete

A micromechanical model, namely the 3D Two-Layer Built-in Model is developed to obtain the overall CTE of cement concrete. The existence of interfacial transition zone (ITZ) between aggregate and cement paste is considered in the model, and the ITZ model is

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Aggregate-bed 3D concrete printing with cement

2020-10-1  Abstract. 3D concrete printing (3DCP) is an emerging construction method, which has the potential to revolutionize the building industry by enabling construction automation. This paper presents a feasible concrete printing process, where cement-based filament is extruded onto aggregates bed to form layer-by-layer structures.

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3D meso-scale modeling of concrete with a local

2020-10-10  Concrete is a three-phase heterogeneous composite material composed of aggregate, cement mortar and its bonding interface. The complex meso-structure of concrete has a direct influence on its macroscopic mechanical properties.In this paper, a new efficient method of concrete meso-modeling is proposed based on the local background grid method.The random polyhedral aggregate

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Numerical Studies on Damage Behavior of Recycled

adshelp[at]cfa.harvard The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

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Concrete–Concrete Bond in Mode-I: A study on the ... -

2019-6-22  Concrete–Concrete Bond in Mode-I: A study on the Synergistic E ect of Surface Roughness and ... Slowik et al. [14] characterized the behaviour of strain-hardening cement-based composite systems aimed at enhancing the overall durability of structural retrofits, by addressing both interfacial ... Fine aggregate was natural sand and coarse ...

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On the Use of Machine Learning Models for ... - MDPI

2021-2-9  components (water/cement, aggregate, superplasticizers, etc.), curing environment as well as curing age [3–6]. In practical terms, it would be very beneficial to be able to accurately predict the compressive strength of concrete based on the abovementioned parameters.

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Aggregate Representation Approach in 3D Discrete

Aggregate based composites are a common material in civil engineering. Examples of such composites include: asphalt concrete, filled plastic and reinforced concrete. More often than not, it is essential for one to determine the properties of the composite. ... a 3D solid model of the particle was accurately reconstructed from X-ray CT imaging ...

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3D printing eco-friendly concrete containing under ...

2021-7-1  3D concrete printing (3DCP), an emerging digital fabrication technology using concrete, promises to deliver greater automation, flexibility, and freeform construction as compared to conventional (largely manual) construction. 3DCP can potentially assist in the integration of digital technologies such as building information modelling and virtual reality with construction [, , , , , ].

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Based on TIR Radiances of Cracking - MDPI

2020-9-2  concrete crack is significant, the concrete crack in a 3D plot will be displayed as a canyon-like shape. However, it is obvious that the 3D plot with dark noise cannot effectively display the canyon-like shape due to its lower signal-to-noise ratio [35] compared to the denoised plot. Figure 1.

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Aggregate-bed 3D concrete printing with cement

2020-10-1  Abstract. 3D concrete printing (3DCP) is an emerging construction method, which has the potential to revolutionize the building industry by enabling construction automation. This paper presents a feasible concrete printing process, where cement-based filament is extruded onto aggregates bed to form layer-by-layer structures.

get price

Thermal expansion prediction of cement concrete

A micromechanical model, namely the 3D Two-Layer Built-in Model is developed to obtain the overall CTE of cement concrete. The existence of interfacial transition zone (ITZ) between aggregate and cement paste is considered in the model, and the ITZ model is

get price

3D printing eco-friendly concrete containing under ...

2021-7-1  3D concrete printing (3DCP), an emerging digital fabrication technology using concrete, promises to deliver greater automation, flexibility, and freeform construction as compared to conventional (largely manual) construction. 3DCP can potentially assist in the integration of digital technologies such as building information modelling and virtual reality with construction [, , , , , ].

get price

3D meso-scale modeling of concrete with a local

2020-10-10  Concrete is a three-phase heterogeneous composite material composed of aggregate, cement mortar and its bonding interface. The complex meso-structure of concrete has a direct influence on its macroscopic mechanical properties.In this paper, a new efficient method of concrete meso-modeling is proposed based on the local background grid method.The random polyhedral aggregate

get price

Numerical Studies on Damage Behavior of Recycled

adshelp[at]cfa.harvard The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

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Numerical Study of Concrete Dynamic Splitting Based

2021-4-13  Search worldwide, life-sciences literature Search. Advanced Search Coronavirus articles and preprints Search examples: "breast cancer" Smith J

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Based on TIR Radiances of Cracking - MDPI

2020-9-2  concrete crack is significant, the concrete crack in a 3D plot will be displayed as a canyon-like shape. However, it is obvious that the 3D plot with dark noise cannot effectively display the canyon-like shape due to its lower signal-to-noise ratio [35] compared to the denoised plot. Figure 1.

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3D meso-scale modelling of concrete material in spall ...

2014-3-12  In the present study, a 3D meso-scale model of concrete specimen with consideration of cement mortar and aggregates is developed to simulate spall tests and investigate the behaviour of concrete material under high strain rate. The commercial software LS-DYNA is used to perform the numerical simulations of spall tests.

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Concrete Beam-Slab Assembly Based on Layered Shell ... -

2020-12-28  model the prestressed tendons and rotational springs to model the energy dissipation elements. Though this method has been validated by simulating several beam-to-column connections, a key factor is neglected in the modeling approach, that is, the floor slabs. Based on this background information, the present paper developed a new method to

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Aggregate representation for mesostructure of stone

2015-7-11  An aggregate numerical representation is created with the following three steps: (1) obtain aggregate cross sectional images using X-ray computed tomography (CT) technique; (2) process the images and find out the 3D boundary of the aggregate particles; (3) use a sphere growth model to fill the interior space of the aggregate boundary.

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