The Influence of Fiber Reinforcement on the Properties of the Self-Compacting Concrete Mix and Concrete

2020 ◽  
Vol 299 ◽  
pp. 112-117
Author(s):  
Margarita A. Goncharova ◽  
Vladimir V. Krokhotin ◽  
Alexander N. Ivashkin
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fiber Reinforcement ◽  
The Self ◽  
Rheological Characteristics ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Concrete Mix ◽  
Technological Effectiveness

The paper considers the influence of fiberglass on the rheological and stress-strain properties of self-compacting concretes. The use of fiberglass in self-compacting concrete compositions makes it possible to achieve a sufficient coefficient of grain separation in coarse and fine fillers, which significantly influences the mobility and technological effectiveness of self-compacting mixes. Optimum compositions of self-compacting concretes are obtained, rational volumes of the hyper-plasticizing additive and of fiberglass are determined. The components were selected experimentally, in order to optimize the composition according to rheological characteristics. It is established that the use of fiberglass positively influences the stress-strain characteristics of concrete: it raises the compressive strength, as well as the bending tensile strength without deteriorating the workability and spreadabilityof the self-compacting concrete mix.

Definition of rheological characteristics of self-compacting concretes in Russian and foreign regulatory documents

2019 ◽  
pp. 39-45
Keyword(s):  
Water Content ◽  
The Self ◽  
National Standard ◽  
Rheological Characteristics ◽  
Use Of Self ◽  
Self Compacting Concrete ◽  
Regulatory Documents ◽  
Regulatory Frameworks ◽  
Concrete Mix ◽  
Definition Of

The article is devoted to the comparison of acting domestic and foreign regulatory frameworks for assessing properties of the self-compacting concrete. Advantages of the self-compacting concrete mix such as improved flowability and high density at low water content due to what this material has been widely used abroad are presented. In addition, the main rheological characteristics of self-compacting concretes concerning the mobility of the mix, viscosity and segregation, as well as methods for their evaluation with the use of a cone flow diameter, V-shaped funnel, L-shaped box, blocking J-ring are considered. Visual indexes of stability and possibilities of their use are shown. It is noted that when producing concretes it is necessary to provide for possible shrinkage by compensating it due to the use of self-stressing concretes, self-stressing cements and expanding additives, especially when using self-compacting concretes, which exclude forced compaction (vibration). The article reveals the need to develop the national standard and its harmonization with foreign analogs and modification of the Sets of rules existing in Russia.

scholarly journals The Effect of Fine and Coarse Recycled Aggregates on Fresh and Mechanical Properties of Self-Compacting Concrete

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1120 ◽  
Author(s):  
Mahmoud Nili ◽  
Hossein Sasanipour ◽  
Farhad Aslani
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Energy Absorption ◽  
Silica Fume ◽  
The Self ◽  
Recycled Aggregates ◽  
Self Compacting Concrete ◽  
Concrete Mixtures ◽  
Natural Aggregates ◽  
Recycled Material

Today, the use of recycled aggregates as a substitute for a part of the natural aggregates in concrete production is increasing. This approach is essential because the resources for natural aggregates are decreasing in the world. In the present study, the effects of recycled concrete aggregates as a partial replacement for fine (by 50%) and coarse aggregates (by 100%) were examined in the self-compacting concrete mixtures which contain air-entraining agents and silica fumes. Two series of self-compacting concrete mixes have been prepared. In the first series, fine and coarse recycled mixtures respectively with 50% and 100% replacement with air entraining agent were used. In the second series, fine recycled (with 50% replacement) and coarse recycled (with 100% replacement) were used with silica fume. The rheological properties of the self-compacting concrete (SCC) were determined using slump-flow and J-ring tests. The tests of compressive strength, tensile strength, and compressive stress-strain behavior were performed on both series. The results indicated that air-entraining agent and silica fume have an important role in stabilization of fresh properties of the mixtures. The results of tests indicated a decrease in compressive strength, modulus of elasticity, and energy absorption of concrete mixtures containing air entrained agent. Also, the results showed that complete replacement (100%) with coarse recycled material had no significant effect on mechanical strength, while replacement with 50% fine recycled material has reduced compressive strength, tensile strength, and energy absorption.

scholarly journals Effect of steel fibers over the Self Compacting Concrete

2019 ◽  
Vol 9 (2S2) ◽  
pp. 38-41 ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Construction Industry ◽  
Steel Fibers ◽  
The Self ◽  
Engineering Properties ◽  
Self Compacting Concrete ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Good Outcome

The introduction of self-compacting concrete in the construction industry overcomes the flaws caused due to the improper compaction of concrete. Fibers are proved to increase the properties of conventional concrete. This research focuses on the performance of self-compacting concrete after augmenting steel fibers. The steel fibers are added in proportions such as 0.25 percentage, 0.5 percentage, 0.75 percentage and 1 percentage. After casting the self- compacting concrete, the strength was assessed for 7 days and 28 days and its compressive strength and split tensile strength was analyzed. The inclusion of steel fibers yielded good outcome in the tests and it is proved to yield better engineering properties.

scholarly journals Mechanical Effect of Steel Fiber on the Cement Replacement Materials of Self-Compacting Concrete

Fibers ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 36 ◽  
Author(s):  
Hisham Alabduljabbar ◽  
Rayed Alyousef ◽  
Fahed Alrshoudi ◽  
Abdulaziz Alaskar ◽  
Ahmed Fathi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Silica Fume ◽  
Steel Fiber ◽  
Mechanical Effect ◽  
Splitting Tensile Strength ◽  
Self Compacting Concrete ◽  
Cement Replacement ◽  
Filling Ability ◽  
Concrete Mix

The behaviors of the fresh and mechanical properties of self-compacting concrete (SCC) are different from those of normal concrete mix. Previous research has investigated the benefits of this concrete mix by incorporating different constituent materials. The current research aims to develop a steel fiber reinforcement (SFR)‒SCC mixture and to study the effectiveness of different cement replacement materials (CRMs) on the fresh and mechanical properties of the SFR‒SCC mixtures. CRMs have been used to replace cement content, and the use of different water/cement ratios may lower the cost of CRMs, which include microwave-incinerated rice husk ash, silica fume, and fly ash. Fresh behavior, such as flow and filling ability and capacity segregation, was examined by a special test in SCC on the basis of their specifications. Moreover, compressive and splitting tensile strength tests were determined to simulate the hardened behavior for the concrete specimens. Experimental findings showed that, the V-funnel and L-box were within the accepted range for SCC. Tensile and flexural strength increases upon the use of 10% silica fume were found when compared with other groups; the ideal percentage of steel fiber that should be combined in this hybrid was 2% of the total weight of the binder. Overall, steel fibers generated a heightened compressive and splitting tensile strength in the self-compacting concrete mixes.

The Effect of Polypropylene Fiber on the Mechanical Properties of Self-Compacting Concrete

2010 ◽  
Vol 168-170 ◽  
pp. 1325-1329
Author(s):  
Ye Ran Zhu ◽  
Jun Cai ◽  
Dong Wang ◽  
Guo Hong Huang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Polypropylene Fiber ◽  
Flexural Properties ◽  
Test Results ◽  
Self Compacting Concrete ◽  
Bending Tests ◽  
Flexural Toughness ◽  
Four Point Bending

This paper investigates the mechanical properties (compressive strength, splitting tensile strength and flexural toughness) of polypropylene fiber reinforced self-compacting concrete (PFRSCC). The effect of the incorporation of polypropylene fiber on the mechanical properties of PFRSCC is determined. Four point bending tests on beam specimens were performed to evaluate the flexural properties of PFRSCC. Test results indicate that flexural toughness and ductility are remarkably improved by the addition of polypropylene fiber.

scholarly journals Effect of Glass Fibers on Self Compacting Concrete

2020 ◽  
Vol 170 ◽  
pp. 06018
Author(s):  
Sandeep L. Hake ◽  
S. S. Shinde ◽  
Piyush K. Bhandari ◽  
P. R. Awasarmal ◽  
B. D. Kanawade
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Glass Fibers ◽  
Extreme Condition ◽  
High Dispersion ◽  
Self Compacting Concrete ◽  
Split Tensile Strength ◽  
Glass Fiber Reinforced ◽  
Complex Structural

Self Compacting Concrete (SCC) is a specially developed concrete for concreting under extreme condition of inaccessibility from heights. It is capable to flow under influence of its own weight. It could be used when encountered with dense reinforcement and complex structural design. Problem of segregation as well as bleeding is eliminated and vibration is not required for compaction. As concrete is strong in compression and weak in tension. Hence to make it strong in tension, discontinuous Anti-Crack high dispersion glass fibers are added. SCC mix prepared with addition of discontinuous glass fibers is called as Glass Fiber reinforced Self Compacting Concrete (GFRSCC). In this paper an experimental study has been carried out to check the effect of Anti-Crack high dispersion glass fibers on the compressive strength, split tensile strength and flexural strength of SCC. The result show that, as compared to the Normal SCC, the compressive strength of GFRSCC increases by 2.80% and 12.42%, the split tensile strength of GFRSCC increases by 4.47% and 25.12% and the flexural strength of SCC increases by 6.57% and 14.34% when the Cem-FIL Anti-Crack HD glass fibers were added as 0.25% and 0.50% respectively by the weight of total cementitious material contents. The addition of 0.25% Cem-FIL Anti-Crack HD glass fibers to SCC has not much affect on the workability of Normal SCC. Whereas, addition of 0.50% Cem-FIL Anti-Crack HD glass fibers reduces the workability of SCC.

Low Strength Self Compacting Concrete Compressive Strength Test

2013 ◽  
Vol 275-277 ◽  
pp. 2041-2044
Author(s):  
Feng Yan ◽  
Nan Pang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Compression Strength ◽  
Strength Test ◽  
The Self ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Intensity Index ◽  
Compressive Strength Test ◽  
Low Strength

In this paper,the mechanical properties were studied,the self compacting concrete cubic compression strength,prismatic compressive strength test,discussed two kinds of relationship between intensity index.

Mechanical Properties of Fiber Reinforced Self-Compacting Concrete

2013 ◽  
Vol 470 ◽  
pp. 797-801 ◽  
Author(s):  
Wu Jian Long ◽  
Han Xin Lin ◽  
Zhen Rong Chen ◽  
Kai Long Zhang ◽  
Wei Lun Wang
Keyword(s):  
Compressive Strength ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
Performance Testing ◽  
The Self ◽  
Self Compacting Concrete ◽  
Curing Period ◽  
Polyethylene Fiber ◽  
Mechanics Performance ◽  
Mechanical Strengths

The mechanical strengths of self-compacting concrete (SCC) with different strengths and different fibers were investigated. By mechanics performance testing on concrete samples, it shows that the fiber can significantly reduce strength of the self-compacting concrete during curing period. The 28d tensile strength of self-compacting concrete can be improved when steel fiber, polypropylene fiber, or polyethylene fiber were used. Moreover, steel fiber can improve the 28d compressive strength; contrarily, polypropylene fiber and polyethylene fiber can reduce the 28d compressive strength.

scholarly journals Compressive Strength by Incorporating Quarry Dust in Self-Compacting Concrete Grade M35

2018 ◽  
Vol 4 (4) ◽  
pp. 776 ◽  
Author(s):  
Mushtaq Ahmad ◽  
Sana Ullah ◽  
Aneel Manan ◽  
Temple Chimuanya Odimegeu ◽  
Salmia Beddu
Keyword(s):  
Compressive Strength ◽  
Strength Test ◽  
The Self ◽  
Kuala Lumpur ◽  
Self Compacting Concrete ◽  
Curing Period ◽  
Slump Flow ◽  
Compressive Strength Test ◽  
Super Plasticizer ◽  
Quarry Dust

The study has conducted to determine the workability and compressive strength of the self –compacting concrete. The sand has replaced with quarry dust with the proportion of 10, 20, 30 and 40% and super plasticizer was added 0.9%. The experiments were carried out at the Infrastructure University Kuala Lumpur (IUKL) concrete laboratory. Slump flow, J- Ring tests were carried out to determine the workability of self-compacting concrete and compressive strength test was conducted on 7 days and 28th days of curing period. A finding of the study shows that workability and compressive strength has increased by addition of quarry dust. It is concluded that addition of quarry dust up to 30%  improve the workability of the self-compacting concrete and further addition of quarry dust decrease the workability. Additionally, compressive strength of the quarry dust modified self-compacting concrete shows the trend of higher compressive strength up to 30% addition of quarry dust with sand replacement and further addition decrease the compressive strength.

scholarly journals THE SELF COMPACTING CONCRETE (SCC) USING SEAWATER AS MIXING WATER WITHOUT CURING

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Sea Water ◽  
Splitting Tensile Strength ◽  
Test Method ◽  
Building Structures ◽  
Working Process ◽  
Self Compacting Concrete ◽  
Concrete Building ◽  
Mixing Water

The number of problems found in the construction world includes the difficulty or lack of fresh water in some areas to be mixed in the concrete, negligence in the maintenance of concrete and working process of concrete mainly on the concrete structures have a complex reinforcement and high concrete building structures. This study aims to find out the compressive strength, splitting tensile strength, absorption, and porosity of Self Compacting Concrete (SCC) using sea water as mixing water and with or without curing in sea water. The test specimens were made for each test specimen withthe variation on age 1 day, 3 days, 7 days, 28 days and 90 days. The test method of compressive strength according to ASTM 39/C 39M-12a standard, tensile strength according to ASTM C496 / C496M-11 standard and the porosity and absorption according to ASTM C642-13 standard. The result of research was 1) the decrease in compressive strength in the specimen SCC-SWC was from 3 days, 7 days, 28 days and 90 days consecutive 13.20%, 12.90%, 12.80%, and 12.50%; 2) the decreases in splitting tensile strength in the specimen SCC-SWC were from the age of 3 days, 7 days, 28 days until the age of 90 days consecutive by 3.10%, 8.05%, 9.51%, and 9.21%; 3) the increase in the porosity values on the specimenSCC seawater without cured in sea water (SCC-SWC) at age 3 days, 7 days, 28 days and 90 days was 2.86%, 7.90%,5.86%, and 5.55%, respectively; 4) the increase in the absorption values on the specimen SCC without curing at 3 days, 7 days, 28 days and 90 days was 15.80%, 20.57%, 15.84%, and 30.80%, respectively. The increase in mechanical properties (compressive strength and tensile strength) in the both of the specimen SCC-SC and SCC-SWC along with the decrease of porosity and absorption. Conversely, the decrease of compressive strength and tensile strength in the both of the specimen SCC-SC and SCC-SWC along with the increase in porosity and absorption value in the SCC

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