Mar 05, 2020 · I-Cheng Yeh, " Modeling of strength of high performance concrete using artificial neural networks," Cement and Concrete Research, Vol. 28, №12, pp. 1797–1808 (1998). Ahsanul Kabir, Md Monjurul Hasan, Khasro Miah, " Strength Prediction Model for Concrete", ACEE Int. J. on Civil and Environmental Engineering, Vol. 2, №1, Aug 2013.
For the measured deformation time series of concrete engineering, linear and nonlinear chaotic prediction methods are represented for the autogenously volume deformation of concrete on basis of phase space reconstruction. Thus,the chaotic analytic method is set up for the prediction of the measured deformation time series of concrete engineering.
Faulting prediction is the core of concrete pavement maintenance and design. Highway agencies are always faced with the problem of lower accuracy for the prediction which causes costly maintenance. Although many researchers have developed some performance prediction models, the accuracy of prediction has remained a challenge. This paper reviews performance prediction models and JPCP …
Sep 01, 2021 · Concrete Pumping (BBCP Quick Quote BBCP - Free Report) is expected to deliver a year-over-year increase in earnings on higher revenues when …
Jul 30, 2020 · 15 tures . In extrusion-based 3D-concrete-printing, the material is deposited layer-wise using an automated control of the extrusion nozzle by a robot arm. Extrusion-based 3D-concrete-printing process chains can be divided into production, transportation/pumping, extrusion and deposition stages . Each of these
Apr 22, 2021 · The prediction of the MLP and RBF model is more or less identical for the selected example and they both accurately predict the rheological response of the cement paste in the FlowCyl equipment. In Table 2, the R 2 -values at the test stage for the a and b coefficients of the quadratic equation are shown for the MLP and RBF model using both
May 26, 2021 · The pumping pressure-time curve of concrete pumping speed of 0.71 m/s was similar to that of pumping speed of 0.53 m/s. The average pumping pressure of concrete with pumping speed of 0.71 m/s in horizontal pipe, bend pipe, and vertical pipe …
A sophisticated model for the prediction of concrete pave-ment temperature is used at the core of the software. The predicted pavement temperature is used for both the predic-tion of strength and stress development in the concrete. The cracking prediction is based on the CRCP-8 model. Origi-nating from findings under NCHRP research project 1-15,
May 31, 2021 · Concrete Pumping (BBCP) doesn't possess the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.
May 03, 2011 · The methods were developed and tested against a data set derived from 17 concrete strength test laboratories. The cross-validation of unbiased estimates of the prediction models for performance comparison purposes indicated that multiple additive regression tree (MART) was superior in prediction accuracy, training time, and aversion to overfitting.
Dec 01, 2019 · The pressure of the fresh concrete during pumping in conveying pipes is critical in both concrete pump design and conveying pipes layout. The local pressure loss occurring at the connections between pipes, which often has been overlooked in the total pumping pressure research, is quite significant compared to the total pressure drop, especially for long conveying pipes.
SmartMix ™ is a web-based dashboard that enables producers to optimize concrete materials and predict the performance of their mixes. With the SmartMix dashboard, producers can adjust the proportions of their concrete mixes, such as the use of chemical admixtures and amount of cement. With the help of Roxi™ and access to millions of datapoints used to train the artificial intelligence
Jun 16, 2016 · Prediction of concrete pumping performance base on the evaluation of lubrication layer properties. Ph. D. Thesis, Korea Advanced Institute of Science and Technology, Korea. Choi, M. S., Kim, Y. J., Jang, K. P., & Kwon, S. H. (2014). Effect of the coarse aggregate size on pipe flow of pumped concrete. Construction and Building Materials, 66, 723–730.
The ideal pumping model should include all these factors. The pumping model presented here is based on field data from different sources and amount of deformation energy in the pavement structure. The volume of pumped material expressed in terms of the normalized pumping index is calculated as a function of the deformation energy produced by
May 20, 2018 · Based on the measured rheological properties from each measuring system, to determine the effects of the different rheological measurements on predicting the pipe flow of pumped concrete, the pumping pressure depending on the different combinations of measurement systems were calculated based on analytical equation developed and verified in previous papers, and compared with the experimentally measured pumping …
Feb 16, 2021 · Predict mix performance, such as compressive strength, workability, and air content of concrete, based on a mix's proportions, raw material characteristics, ambient conditions, etc.
Jan 29, 2019 · （Concrete pistons are key and consumptive components of concrete pump vehicles. Failure of the piston will cause malfunction of the pump vehicle, which may even halt the whole construction site and bring unacceptable economic loss. Piston life is closely related to the specific operation conditions of the equipment.
Mar 01, 2020 · In work at hand, a site suitable, scientifically-based methodology to characterise and predict fresh concrete pumping behaviour was developed and verified. The properties of the lubricating layer (LL) formed during pumping and consequently reducing the friction at the pipe wall-to-concrete interface were investigated and quantified.
Concrete workability, quantified by concrete slump, is an important property of a concrete mixture. Concrete slump is generally known to affect the consistency, flowability, pumpability, compactibility, and harshness of a concrete mix. Hence, an accurate prediction of this property is a practical need of construction engineers. This research proposes a machine learning model for predicting
Oct 01, 2013 · A study by Kaplan et al. on predicting pumping performance demonstrated that the lubrication layer is a major factor in facilitating concrete pumping because the layer has a significantly lower viscosity and yield stress than concrete as generally measured by a concrete rheometer and also developed a test instrument called a tribometer that measures the friction stress at the wall of the pipe.
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