Damage Behavior of Steel Fiber Reinforced and Polymer Modified Concrete under Impact Loading

2007 ◽  
pp. 889-892 ◽  
Author(s):  
Yi Ping Liu ◽  
Li Qun Tang ◽  
Xiao Qing Huang
Keyword(s):  
Impact Loading ◽  
Steel Fiber ◽  
Fiber Reinforced ◽  
Damage Behavior ◽  
Polymer Modified Concrete

Damage Behavior of Steel Fiber Reinforced and Polymer Modified Concrete under Impact Loading

2007 ◽  
Vol 348-349 ◽  
pp. 889-892 ◽  
Author(s):  
Yi Ping Liu ◽  
Li Qun Tang ◽  
Xiao Qing Huang
Keyword(s):  
Impact Loading ◽  
Damage Evolution ◽  
Steel Fiber ◽  
Split Hopkinson Pressure Bar ◽  
Early Stage ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Polymer Modified Concrete ◽  
The Impact

Damage behaviors of plain concrete (PC), steel fiber reinforced concrete (SFRC), steel fiber reinforced and polymer modified concrete (SFRPMC) are studied in this paper by use of a Split Hopkinson Pressure Bar (SHPB). Three kinds of concrete materials appear obvious strain rate strengthening effects. SFRPMC appears a better resistance and energy absorption ability. A rate-dependent damage model is suggested to depict the impact damage evolution of three kinds of materials under different impact velocities. The simulation results showed the theoretical model could well describe the dynamic behaviors of the three kinds of materials, and steel fibers attribute more to resist crack develop in early stage, “bridge effect” of steel fibers slow up the damage evolution in SFRC, with the addition of polymer, the internal structures of SFRPMC were modified, SFRPMC gains better ductility, and appears a kind of “softening effect”, which makes the damage in SFRPMC develop more slowly than that in PC and SFRC under impact loading.

Study on Compressive Stress-Strain Relationship of Polymer-Modified Concrete

2013 ◽  
Vol 779-780 ◽  
pp. 122-125 ◽  
Author(s):  
Xin Le Zhang ◽  
Hai Cao ◽  
Xiao Hui Guo
Keyword(s):  
Compressive Stress ◽  
Steel Fiber ◽  
Fiber Reinforced Polymer ◽  
Polymer Concrete ◽  
Fiber Reinforced ◽  
Stress Strain ◽  
Reinforced Polymer ◽  
Strain Relationship ◽  
Polymer Modified Concrete ◽  
Relationship Of

The axial compressive stress-strain relationship of concrete reflects its basic mechanical performance, which is important in analyzing the performance of materials, especially in the analyzing of the elastic modulus, ductility and carrying capacity. In order to study the mechanical properties of polymer-modified concrete and steel fiber reinforced polymer concrete, a comparative study of the compressive stress-strain relationship of polymer-modified concrete and steel fiber reinforced polymer concrete was carried out, the complete compressive stress-strain curves were obtained, and the influence of polymer and steel fiber on concrete elastic modulus and compressive ductility was also studied. It is demonstrated that the compressive ductility index of steel fiber reinforced polymer concrete can reach 7.39 which is greater than that of polymer-modified concrete with the same ingredients. The results also show that steel fiber reinforced polymer concrete is better than both polymer-modified concrete and steel fiber reinforced concrete.

Experimental Study on Fiber Reinforced Concrete

2008 ◽  
Vol 400-402 ◽  
pp. 391-394
Author(s):  
Ming Hui Wei ◽  
Yi Ping Liu ◽  
Li Qun Tang ◽  
Xiao Qing Huang
Keyword(s):  
Reinforced Concrete ◽  
Cost Estimation ◽  
Steel Fiber ◽  
Plain Concrete ◽  
Fiber Reinforced Concrete ◽  
Polymer Fiber ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Hybrid Fiber ◽  
Polymer Modified Concrete

Flexure behaviors of plain concrete (PC), steel fiber reinforced concrete (SFRC), polymer modified concrete (PMC), steel fiber reinforced and polymer modified concrete (SFRPMC) and hybrid fiber reinforced concrete (HFRC) with steel fiber and polymer fiber are studied in this paper, flexure tests were carried out and flexure strengths of the five different materials with different mixture ratios were measured and compared. Flexure ductility of PC, PMC, SFRC, and SFRPMC were calculated and compared. In addition, considering performance and cost estimation comprehensively, HFRC is recommended, preliminary tests show that HFRC may be one of the potential materials for bridge pavement.

Characterization of Steel Fiber Reinforced Acrylic Emulsion Polymer Modified Concrete (SFRPMC) through X-Ray Diffraction (XRD) Analysis

2016 ◽  
Vol 833 ◽  
pp. 87-93 ◽  
Author(s):  
D.S. Hazimmah ◽  
Khairunisa Muthusamy
Keyword(s):  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
X Ray Diffraction ◽  
Acrylic Emulsion ◽  
Cement Ratio ◽  
X Ray ◽  
Degree Of Hydration ◽  
Emulsion Polymer ◽  
Polymer Modified Concrete

The results show the effect of polymer modification on the behavior of Ca (OH)2 in steel fiber reinforced concrete. The polymer modified concrete were prepared using acrylic emulsion polymer at various polymer-cement ratios; they were tested for mechanical strengths, moulded into specimens and cured. The cured specimens were subjected for compressive strength, flexural strength, splitting tensile strength and modulus of elasticity. The small specimens that moulded were subjected to X-ray diffraction (XRD). From the test results, it is concluded that formation of Ca (OH)2 in the polymer modified concrete reinforced with steel fiber is reduced possibly because of the absorption of Ca (OH)2 on polymer films formed in the concrete. The extent of reduction in the quantity of Ca (OH)2 depends upon the polymer-cement ratio, polymer type or both. Generally SFRPMC of mix 43 with 2.5% polymer-cement ratio were found to be more effective than other SFRPMC with 1.0% and 4.0% acrylic emulsion polymer in reducing the quantity of Ca (OH)2 in SFRPMC. The cement modifiers did not cause any detrimental effect on the degree of hydration as in SFRPMC therefore, does not provide a proper means for predicting their degree of hydration.

Sign in / Sign up

Export Citation Format

Share Document