scholarly journals Design Optimization of Rubber-Basalt Fiber- Modified Concrete Mix Ratios Based on a Response Surface Method

2020 ◽  
Vol 10 (19) ◽  
pp. 6753
Author(s):  
Yafeng Gong ◽  
Jiaxiang Song ◽  
Siyuan Lin ◽  
Jianxing Yang ◽  
Yang He ◽  
...  
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Basalt Fiber ◽  
Fiber Content ◽  
Quadratic Term ◽  
Rubber Content ◽  
Surface Method ◽  
Rsm Optimization ◽  
Binder Ratio ◽  
Water Binder Ratio

Rubber aggregates produced from waste rubber materials and environmentally friendly basalt fibers are excellent concrete modification materials, which significantly improve the working performance and mechanical properties of concrete. This paper studied the influences of water-binder ratio, basalt fiber content and rubber content on the properties of rubber-basalt fiber modified concrete (RBFC). Based on the response surface method (RSM), optimization schemes of three preparation parameters were designed. The results showed that all preparation parameters have significant impacts on the slump. The rubber content has a closer relationship with the compressive strength and the quadratic term of the basalt fiber content has a significant impact on the flexural strength. According to the analysis, the optimal mix ratio which possesses reliable accuracy compared with experimental results includes a water-binder ratio of 0.39, a basalt fiber content of 4.56 kg/m3 and a rubber content of 10%,

scholarly journals Mechanical Properties and Fracture Behavior of Crumb Rubber Basalt Fiber Concrete Based on Acoustic Emission Technology

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3513 ◽  
Author(s):  
Hanbing Liu ◽  
Wenjun Li ◽  
Guobao Luo ◽  
Shiqi Liu ◽  
Xiang Lyu
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Fracture Behavior ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
Fiber Content ◽  
Replacement Rate ◽  
Fiber Concrete ◽  
Binder Ratio ◽  
Water Binder Ratio

Basalt fiber and crumb rubber, as excellent road material modifiers, have great advantages in improving the mechanical properties and fracture behavior of concrete. Acoustic emission (AE) is a nondestructive testing and real-time monitoring technique used to characterize the fracture behavior of concrete specimens. The object of this paper is to investigate the effects of crumb rubber replacement rate, basalt fiber content and water–binder ratio on the mechanical properties and fracture behavior of crumb rubber basalt fiber concrete (CRBFC) based on orthogonal test. The fracture behavior of a CRBFC specimen under three-point flexural conditions was monitored by AE technology and the relative cumulative hit (RCH) was defined to characterize the internal damage degree of CRBFC. The experimental results showed that, considering the mechanical strength and fracture damage behavior of CRBFC, the optimal crumb rubber replacement rate, basalt fiber content and water–binder ratio are 10%, 2 kg/m3 and 0.46, respectively. In addition, it was found that AE parameters can effectively characterize the fracture behavior of CRBFC. The fracture stages of CRBFC can be divided according to the cumulative AE hits and counts. AE amplitude value can be used as an early warning of CRBFC specimen fracture. Moreover, the fracture mode can be identified by RA and average frequency (AF) values variation during the loading process.

scholarly journals A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

2019 ◽  
Vol 11 (20) ◽  
pp. 5754 ◽  
Author(s):  
Yongchun Cheng ◽  
Chao Chai ◽  
Yuwei Zhang ◽  
Yu Chen ◽  
Bing Zhu
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
High Temperature Stability ◽  
Porous Asphalt ◽  
Particle Loss ◽  
Independent Variables ◽  
Surface Method

In this paper, the performance of environmentally friendly porous asphalt mixture was optimized by the response surface method. Taking the asphalt-aggregate ratio, crumb-rubber content, and basalt fiber content as the independent variables, the air void, Marshall stability, flow value, Marshall quotient, and Cantabro particle loss are the response values. The best model was determined by fitting the experimental data. After the influence of the independent variables on the response values was clarified, the models were used to optimize the dosage of the asphalt, crumb rubber, and basalt fiber through comprehensive analysis. The results showed that the application of the response surface method can complete the establishment of the models and the optimization of the performance of the porous asphalt mixture with sufficient accuracy. The optimum dosage of the asphalt to aggregate ratio, crumb rubber, and basalt fiber is 4.51%, 11.21%, and 0.42%, respectively. The high-temperature stability, low-temperature crack resistance, water stability, and Cantabro particle loss resistance of the optimized porous asphalt mixture were effectively improved, which provides a reference for the construction of eco-friendly pavement.

Optimization of Compressive Strength of Reactive Powder Concrete for an Energy Storage Pile Application Using Response Surface Method

2019 ◽  
Vol 950 ◽  
pp. 117-122
Author(s):  
Umut Bektimirova ◽  
Eldar Sharafutdinov ◽  
Aidana Tleuken ◽  
Chang Seon Shon ◽  
Di Chuan Zhang ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Energy Storage ◽  
Response Surface ◽  
Response Surface Method ◽  
Plain Concrete ◽  
Linear Interpolation ◽  
Reactive Powder Concrete ◽  
Surface Method ◽  
Binder Ratio ◽  
Reactive Powder

The main goal of this study was to optimize the compressive strength of reactive powder concrete (RPC) for an energy storage pile application using response surface method (RSM). The compressive strength of 9 different RPC mixtures along with 3 plain concrete mixtures was determined. Silica fume (SF) content and the water-to-binder ratio (w/b) were selected as parameters to influence the compressive strength of the concrete mixture. RSM regression analysis was used to develop a prediction model of compressive strength. Based on test results and linear interpolation, the combination of 20.46% SF and w/b=0.20 was determined to achieve the highest compressive strength.

A Proposal of PSO with Presumption Function of the Solution Landscape by Response Surface Method

2014 ◽  
Vol 134 (9) ◽  
pp. 1293-1298
Author(s):  
Toshiya Kaihara ◽  
Nobutada Fuji ◽  
Tomomi Nonaka ◽  
Yuma Tomoi
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Surface Method
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