Experimental Study on the Effect of Different Pretreatment Methods on Rubber Concrete Work Performance and Compressive Strength

2014 ◽  
Vol 507 ◽  
pp. 421-424
Author(s):  
Qun Yu ◽  
Kun Zhang
Keyword(s):  
Compressive Strength ◽  
Work Performance ◽  
Rubber Particle ◽  
Concrete Block ◽  
Improve Performance ◽  
Rubber Particles ◽  
Naoh Solution ◽  
Compressive Strength Of Concrete ◽  
Rubber Concrete ◽  
Pretreatment Solution

In untreated, clean water, NaOH solution to clean, CCl4 solution to clean the rubber particles of different pretreatments as the main influencing factors, by 51 rubber concrete block pilot study reached different pretreatment methods on different rubber particle size and dosage of rubber concrete workability and compressive strength were investigated. The results show that: water, NaOH solution, CCl4 pretreatment solution, such as a rubber concrete workability and compressive strength were improved, and the rubber particles larger pretreatment on rubber compressive strength of concrete work to improve performance and more obvious.

Study on Mechanical Properties and Impermeability of Rubber Concrete

2014 ◽  
Vol 629-630 ◽  
pp. 467-472
Author(s):  
Xiu Hua Zheng ◽  
Xu Zhang ◽  
Shi Zuo Zhan
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Rubber Particle ◽  
Particle Sizes ◽  
Rubber Content ◽  
Rubber Powder ◽  
Compressive Strength Of Concrete ◽  
Electric Flux ◽  
Powder Content ◽  
Rubber Concrete

The effects of the size and volumetric content of rubber powder on properties of concrete, including flexural strength, compressive strength and permeability, were studied in this paper. Two different particle sizes (20 meshand 60 mesh) of rubber powder were chosen to replace the sand with volume content of sand as5%, 10%, 15%, 20%, 25%, 30% respectively. The results showed that both flexural and compressive strength of concrete, especially compressive strength, decreased with the increase of rubber content. Moreover, the smaller the particle of rubber powder, the greaterer the strength of the concrete, which was not obvious as effect of rubber powder content on the strength of concrete. The impermeability of concrete increased with the increase of rubber powder content. The electric flux of concrete with 30% rubber powder reduced to about 900 C, which was only 1/5 of that with 5%. At the same content, smaller rubber particle has positiveeffects on the impermeability of concrete. Keywords: rubber concrete,rubber powder, compressive strength,flexural strength, permeability performance.

Experimental Study on Ratio of Bending-Compressive Strength of the Crumb Rubber Concrete Modified by Latex

2014 ◽  
Vol 941-944 ◽  
pp. 761-764
Author(s):  
Wei Li ◽  
Zhen Huang ◽  
Xiao Chu Wang ◽  
Zi Sheng Zang
Keyword(s):  
Mechanical Property ◽  
Experimental Study ◽  
Compressive Strength ◽  
Surface Modification ◽  
Flexural Strength ◽  
Crumb Rubber ◽  
Interface Effect ◽  
Rubber Particles ◽  
Crumb Rubber Concrete ◽  
Rubber Concrete

The cementitiousness between rubber particles and cement-based material could be raised because of the surface modification of rubber,thus enhance the mechanical property of crumb rubber concrete and improve the interface effect of rubber particles.We had researched the change regulation about the ratio of bending-compressive strength of the crumb rubber concrete modified by latex,the concrete with various quantity of rubber,under the condition dosage of latex is 0.5% of cement quality.The result of experimental prove that,compressive strength, splitting tensile and flexural strength could be enhanced because of latex injecting,and the ratio of bending-compressive strength could be enhanced at the same time.

Experimental Study on Proportion of Tensile Strength and Compressive Strength of the Crumb Rubber Concrete Modified by Latex

2014 ◽  
Vol 919-921 ◽  
pp. 1916-1919
Author(s):  
Wei Li ◽  
Zhen Huang ◽  
Xiao Chu Wang ◽  
Zi Sheng Zang
Keyword(s):  
Mechanical Property ◽  
Experimental Study ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Surface Modification ◽  
Flexural Strength ◽  
Crumb Rubber ◽  
Rubber Particles ◽  
Crumb Rubber Concrete ◽  
Rubber Concrete

The cementitiousness between rubber particles and cement-based material could be raised because of the surface modification of rubber,thus enhance the mechanical property of crumb rubber concrete and improve the interface effect of rubber particles.We had researched the change regulation of the ratio between tensile strength and compressive strength of the Crumb Rubber Concrete Modified by latex,the concrete with various quantity of rubber,under the condition Dosage of latex is 0.5% of cement quality.The result of Experimental prove that,compressive strength, splitting tensile and flexural strength could be enhanced because of latex injecting,and the ratio between tensile strength and compressive strength could be enhanced at the same time.

Mechanical Properties of Surface Mortar with Waste Crumb Rubber

2014 ◽  
Vol 584-586 ◽  
pp. 917-920
Author(s):  
Gang Xue ◽  
Chun Feng Wu
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Rubber Particle ◽  
Impact Resistance ◽  
Crumb Rubber ◽  
Application Performance ◽  
Waste Rubber ◽  
Aging Properties ◽  
Rubber Particles ◽  
Waste Crumb Rubber

Applying modified waste rubber particle to surface mortar can give full play of the unique characteristics to utilize the waste and decrease environmental pollution. In order to study the application performance of crumb rubber mortar, five different mortar proportions are selected to determine the compressive strength, flexural strength, impact strength and thermal aging strength. The results show that rubber particles mortar possess excellent toughness, impact resistance and heat aging properties.

Experimental Study on the Compressive Strength and Frost Resistance of Rubber Concrete

2013 ◽  
Vol 433-435 ◽  
pp. 2016-2019
Author(s):  
Qun Yu ◽  
Wen Chao Ye
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Frost Resistance ◽  
Experimental Studies ◽  
Maintenance Period ◽  
Concrete Compressive Strength ◽  
Compression Performance ◽  
Rubber Particles ◽  
Rubber Concrete

Experimental studies on the compressive strength and frost resistance of rubber concrete during different maintenance period have been carried through in this paper. The results show that: the concrete compressive strength reduces with the incorporation of rubber particles, but its frost resistance increases, and with the growth of the maintenance period, its compression performance increases; however, its frost resistance remained unchanged.

Effect of Rubber Particles on Fracture Properties and Microstructure of Matrix for PDCC

2012 ◽  
Vol 174-177 ◽  
pp. 1326-1332 ◽  
Author(s):  
Chao Ming Pang ◽  
K.Y. Leung Christopher ◽  
Wei Sun
Keyword(s):  
Fracture Toughness ◽  
Compressive Strength ◽  
Small Volume ◽  
Mercury Intrusion Porosimetry ◽  
Rubber Particle ◽  
Cementitious Composites ◽  
Test Results ◽  
Rubber Waste ◽  
Rubber Particles ◽  
Average Size

Non-biodegradable rubber waste from tyres can be employed for the making of pseudo-ductile cementitious composites (PDCC) which requires a matrix of low toughness. In the present study, compressive strength and fracture toughness are measured for cementitious mortar containing small volume of sand, and with or without rubber particles. Also micro-hardness testing, mercury intrusion porosimetry and scanning electron microscopy are performed. According to the test results, the incorporation of 10%~11% rubber particles with average size of 0.4mm or 0.2mm by volume decreases the compressive strength by 40%~60% and the fracture toughness by 10%~40% which makes preparation of PDCC easier. These can be explained by the presence of cracks at the interface between rubber particle and matrix, as well as the increased porosity and specifically the increased content of large capillary pores in the cementitious composites with rubber particles which is considered as solid air-entraining agent. Moreover, there is a more significant increase in the content of capillary pores for composites with small size rubber particles, explaining the lower strength and toughness when these particles are employed.

Study on Tension and Compression Ratio and Discount Ratio of Rubber Modified Silica Fume Concrete

2014 ◽  
Vol 670-671 ◽  
pp. 396-400 ◽  
Author(s):  
Wei Li ◽  
Zhen Huang ◽  
Xiao Chu Wang ◽  
Jian Peng Zhang
Keyword(s):  
Compressive Strength ◽  
Silica Fume ◽  
Compression Ratio ◽  
Bending Strength ◽  
Pressure Ratio ◽  
Rubber Particle ◽  
Performance Testing ◽  
Fracture Pressure ◽  
Tension And Compression ◽  
Rubber Concrete

This paper conducted all kinds of performance testing of different rubber particle size and different dosage of silica fume rubber modified cement concrete under the condition of 10% the silicon ash content, such as: analysis research of compressive strength, splitting tensile strength, flexural strength, and pull off the pressure ratio and pressure ratio. Experimental results show that silica fume can improve rubber concrete compressive strength, splitting, bending strength, the folding ratio, adding silica fume concrete fracture pressure ratio and compression ratio are improved; the silica fume can effectively improve large brittleness and lack toughness of concrete, and improve the compactness of concrete.

scholarly journals Humidity and specimen preparation procedure: influence on compressive strength of concrete blocks

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Guilherme Aris Parsekian ◽  
André Luis Christoforo ◽  
Amanda Duarte Escobal Mazzú ◽  
Gláucia Maria Dalfré
Keyword(s):  
Compressive Strength ◽  
Concrete Block ◽  
Block Type ◽  
Specimen Preparation ◽  
Standard Procedures ◽  
Strength Tests ◽  
Concrete Blocks ◽  
Compressive Strength Of Concrete ◽  
Average Block ◽  
Best Fit

abstract: It is extremely important that the quality control of the concrete block used in structural masonry is conducted based on standard procedures that allow reliable estimation of the properties of these components. This work aims to analyze and evaluate the influence of the concrete block moisture on the result of the compression test. Hollow concrete blocks were prepared and subsequently maintained in different environments for various periods of time and under different conditions of temperature and humidity to determine the influence of the type of drying on the relative humidity of the block at the time of testing and consequently on its compressive strength. As a conclusion, it can be stated that, because it is necessary to use water in the process, the grinding rectification of the faces of the blocks led them to have high humidity, above 70%. If tested in this condition, the results of the compressive strength tests will be lower than that of blocks under usual environmental conditions. No differences were found in the average block strength when they were kept dry in the controlled environment of the laboratory during periods of 24 or 48 h. After grinding, it is not necessary to dry the blocks inside an oven at 40ºC before the tests; simply leaving them at a usual room temperature of 23ºC and humidity of 40 ± 5% for 24h is sufficient. The attempt to accelerate drying in an oven at 100ºC is not adequate because this leads to an increase in the compressive strength. From the results, it was possible to determine expressions to correlate the compressive strength as a function of the moisture of the block at the time of the test. The best-fit expressions are distinct for each block type, but the formulations are consistent in indicating a considerable difference in resistance as a function of moisture.

scholarly journals Experimental Research on Chloride Erosion Resistance of Rubber Concrete

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Ruonan Zhu ◽  
Jianyong Pang ◽  
Tingya Wang ◽  
Xin Huang
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Corrosion Resistance ◽  
Wave Velocity ◽  
Early Stage ◽  
Rubber Particle ◽  
P Wave ◽  
Chloride Corrosion ◽  
P Wave Velocity ◽  
Rubber Concrete

Chloride corrosion test was carried out in 4% NaCl solution to study the chloride corrosion resistance of rubber concrete. Rubber concrete was prepared by using 20 mesh, 1∼3 mm, and 3∼6 mm rubber particles instead of sand by 5%, 10%, 15%, and 20% of the cementitious material mass. The P-wave velocity and compressive strength of rubber concrete were measured. The microstructure of rubber concrete corroded by chloride was analyzed by SEM. The micromorphology was compared with the macrofailure characteristics under uniaxial compression. The results show that the rubber concrete was still in the early stage of erosion. With the increase of immersion time at the age of 110 days, the P-wave velocity and compressive strength of concrete were generally on the rise. Furthermore, during the period of erosion, the mechanical properties of rubber concrete increased with the increase of rubber particle size and decreased with the increase of the content. Therefore, when the rubber particle size was 3∼6 mm and the content was 5%, the antierosion performance was the best. This study has a certain guiding significance for the chloride corrosion resistance of rubber concrete.

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