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.

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.

scholarly journals Mathematical modelling of concrete compressive strength with waste tire rubber as fine aggregate

2021 ◽  
Vol 15 (3) ◽  
pp. 8344-8355
Author(s):  
B. W. Chong ◽  
R. Othman ◽  
P. J. Ramadhansyah ◽  
S. I. Doh ◽  
Xiaofeng Li
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Strength Loss ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Concrete Compressive Strength ◽  
Tire Rubber ◽  
Waste Tire ◽  
Rubber Particles ◽  
Waste Tire Rubber

With the increasing number of vehicle due to the boom of population and rapid modernisation, the management of waste tire is growing problem. Reusing grinded tire rubber in concrete is a green innovation which provide an outlet for reusing waste tire. While providing certain benefits to concrete, incorporation of tire rubber results in significant loss of concrete compressive strength which hinders the potential of rubberised concrete. This paper aims to develop mathematical models on the influence of tire rubber replacement on the compressive strength of concrete using design of experiment (DoE). 33 data sets are gathered from available literature on concrete with waste tire rubber as partial replacement of fine aggregate. Response surface methodology (RSM) model of rubberised concrete compressive strength shows great accuracy with coefficient of determination (R2) of 0.9923 and root-mean-square error (RMSE) of 2.368. Regression analysis on the strength index of rubberised concrete shows that rubberised concrete strength loss can be expressed in an exponential function of percentage of replacement. The strength loss is attributed to morphology of rubber particles and the weak bonds between rubber particles and cement paste. Hence, tire rubber replacement should be done sparingly with proper treatment and control to minimise concrete strength loss.

Influence of Adding Lime Dust on Compressive Strength and Frost Resistance of Fly Ash Recycled Concrete

2013 ◽  
Vol 671-674 ◽  
pp. 1813-1816
Author(s):  
Xiang Hao Wu ◽  
Yong Xin Yao ◽  
Xing Wei Yin ◽  
Pan Yuan
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Frost Resistance ◽  
Sulfate Solution ◽  
Recycled Concrete ◽  
Experimental Results ◽  
Compression Tests ◽  
Concrete Compressive Strength ◽  
Recycle Concrete ◽  
The Right

The influence of part of fly ash replaced with lime dust on fly ash recycle concrete compressive strength and frost resistance is investigated by compression tests and rapid frost-thawing test. The experimental results show that part of fly ash replaced with lime dust will reduce the early compressive strength of the fly ash recycled concrete; the right amount of lime dust replacing fly ash can raise the latter compressive strength of fly ash recycled concrete, the best replacement proportion is 10%. The anti-frozen capacity of fly ash recycled concrete will reduce by replacing part of fly ash with lime dust, and the amplitude reduction of anti-frozen capacity of fly ash recycled concrete in seawater is greater than the amplitude reduction in sulfate solution and in freshwater.

Experimental Study of Mechanical Properties of Concrete after Freeze-Thaw Exposures

2014 ◽  
Vol 912-914 ◽  
pp. 131-135
Author(s):  
Xiang Ping Fu ◽  
Xiao Xue Liu ◽  
Yi Ze Sun ◽  
Pei Huang ◽  
Yu Chen Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Compressive Strength ◽  
Elasticity Modulus ◽  
Concrete Specimen ◽  
Concrete Compressive Strength ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Freeze Thaw ◽  
Cold Area

The experiment studies how the freeze-thaw cycles influence concrete compressive strength and elasticity modulus with different water-cement ratio under the air-entraining agent and zero of that value respectively. It can be found that modulus of elasticity and compressive strength of the concrete specimen reduced significantly when there is air-entraining agent; the durability of freeze-thaw resistance, however, makes great improvement; as the cement increases, both of them improves effectively. Through the comparison of concrete compressive strength and elastic modulus with different water-cement ratio and air-entraining agent, the optimal water-cement ratio and air-entraining agent were determined. The results of experiment can be used in concrete engineering design in severe cold area.

scholarly journals An Experimental Study on the Basic Mechanical Properties and Compression Size Effect of Rubber Concrete with Different Substitution Rates

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Yanli Hu ◽  
Xuewei Sun ◽  
Aiqun Ma ◽  
Peiwei Gao
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Shear Strength ◽  
Size Effect ◽  
Substitution Rate ◽  
Failure Modes ◽  
Pure Shear ◽  
Specimen Size ◽  
Substitution Rates ◽  
Rubber Concrete

An experimental study was carried out on the uniaxial compression, uniaxial splitting, pure shear, and compression size effect of rubber concrete with 5 different substitution rates by applying hydraulic servo and direct shear apparatus. Then, by comparing the failure modes and ultimate strength eigenvalues of rubber concrete under different loading conditions, the following conclusions were drawn: with the increase of rubber substitution rate, the concrete specimens maintain a relatively good integrity under uniaxial compressive failure; on the contrary, the failure sections under uniaxial slitting and pure shear gradually become uneven with an increasing amount of fallen rubber particles. With the increase of specimen size, the integrity of rubber concrete after failure is gradually improved. Affected by an increased rubber substitution rate, the uniaxial compressive strength, splitting tensile strength, and shear strength of the concrete gradually decrease, while the plastic deformation capacity gradually increases. Specifically, the compressive strength is reduced by a maximum of 60.67%; the shear strength is reduced by a maximum of 49.85%; and the uniaxial splitting strength is reduced by a maximum of 58.38%. Then, we analyzed the strength relationship and the underlying mechanism among the three types of loading modes. It is found that, at the same rubber substitution rate, the compressive strength of rubber concrete gradually increases as the specimen size decreases, and the size effect on the compressive strength gradually decreases as the rubber substitution rate increases. Meanwhile, we performed qualitative and quantitative analysis on the equation describing the coupling effect of specimen size and rubber substitution rate on the compressive strength; the results suggest that the proposed equation is of a high level of applicability. Our research has a reference value for the application and promotion of rubber concrete in actual engineering projects.

scholarly journals INFLUENCE OF MODIFYING AGENT WITH HYDROPHOBIZATION EFFECT ON INCREASE OF OPERATIONAL CHARACTERISTICS OF VIBROPRESSED PRODUCTS

2019 ◽  
pp. 8-13
Author(s):  
Л. Сулейманова ◽  
L. Suleymanova ◽  
М. Малюкова ◽  
M. Malyukova ◽  
А. Слепухин ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Frost Resistance ◽  
Front Face ◽  
Concrete Compressive Strength ◽  
Modifying Agent ◽  
Face Area ◽  
Operational Characteristics ◽  
Negative Role ◽  
Geometrical Dimensions

In the article the method of volumetric hydrophobization by insertion of modifying agents with hydrophobization effect directly in concrete mixture on the stage of mixing is considered and the degree of their influence on physics-mathematics properties of vibropressed products which made on technological line with optimal granulometry, water to cement proportion and parameters of forming is estimated, so that the geometrical dimensions of moulded products satisfy required sizes and limits, and appearance of front-face area satisfied A3 category. There was established the increase of operational characteristics of concrete walkway vibropressed slabs when in use of polyfunctional modifying agents with hydrophobization effect – Murasan BWA 17 and SikaPaver AE-2 in 0.5 % cement weight quantity, wherein there was found the increase of compressive strength of slabs on 23 %, frost resistance on 50 cycles and decrease of water absorption up to 45 % which allows increasing the longevity of small-pieces products. Insertion of volumetric modifier-hydrophobisator Akvasil, only with a mono-characteristic to decrease of water absorption, has negative role on strength characteristics of vibropressed products with decrease of concrete compressive strength by 12 %.

Study on Influence Factors of Rubber Concrete Compressive Strength

2012 ◽  
Vol 204-208 ◽  
pp. 4177-4180
Author(s):  
Wei Wu ◽  
Chao Zhang ◽  
Yong Li
Keyword(s):  
Compressive Strength ◽  
Influence Factors ◽  
Powder Size ◽  
Concrete Compressive Strength ◽  
Ordinary Concrete ◽  
Strength Change ◽  
Change Trend ◽  
Sand And Gravel ◽  
Rubber Concrete ◽  
Better Than

Rubber is mixed into concrete replacing sand, gravel and both sand and gravel with the same volume. Test compressive strength change trend of 7d and 28d concrete mixed into different volume rubber of 20 mesh, 40 mesh, 60 mesh and 80 mesh and study influence of different way, powder size and dosage on rubber concrete compressive strength. The results show that tenacity, cracking resistance and failure characters of rubber concrete are significantly better than that of ordinary concrete and that compressive strength of rubber concrete declines with increase of rubber dosage.

scholarly journals Evaluation of Stress–Strain Behavior of Self-Compacting Rubber Lightweight Aggregate Concrete under Uniaxial Compression Loading

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4064 ◽  
Author(s):  
Jing Lv ◽  
Tianhua Zhou ◽  
Qiang Du ◽  
Kunlun Li ◽  
Kai Sun
Keyword(s):  
Compressive Strength ◽  
Failure Modes ◽  
Experimental Studies ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Peak Strain ◽  
Stress Strain ◽  
Aggregate Concrete ◽  
Rubber Particles ◽  
Strain Relationship

The recycling of waste tires in lightweight aggregate concrete (LC) would achieve huge environmental and societal benefits, but the effects of rubber particles on the partial properties of LC are not clear (e.g., the stress–strain relationship). In this paper, uniaxial compressive experiments were conducted to evaluate the stress–strain relationship of self-compacting rubber lightweight aggregate concrete (SCRLC). Rubber particles were used to replace sand by volume, and substitution percentages of 0%, 10%, 20%, 30%, 40%, and 50% were set as influence factors. Experimental results indicate that with increased rubber particles substitution percentage, the cubic compressive strength and axial compressive strength of SCRLC decreased, while the failure modes of SCRLC prism specimens gradually changed from brittle to ductile failure. As the rubber particles substitution percentage increased from 0% to 50%, the peak strain of SCRLC increased whereas peak stress, elastic modulus, and peak secant modulus of SCRLC deceased, the descending stage of stress–strain curves became softer. The rubber particles substitution percentage of 30% was the critical point at which an obvious change in the properties of SCRLC occurred. Based on the data collected from experimental studies, a predictive model for SCRLC was established and a further prediction of the SCRLC stress–strain relationship was given.

Sign in / Sign up

Export Citation Format

Share Document