Abrasion resistance of ultra high performance concrete incorporating coarser aggregate

Pyo, Sukhoon; Abate, Selamu Yihune; Kim, Hyeong-Ki

doi:10.1016/j.conbuildmat.2018.01.036

Cited by 73 publications

(26 citation statements)

References 16 publications

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“…Ultra-high-performance concrete (UHPC) is a new construction material with excellent mechanical properties and durability [ 1 ], which makes it an innovative material in the engineering field [ 2 ]. However, its preparation requires high-quality raw materials [ 3 ] such as quartz sand or high-grade river sand.…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

et al. 2020

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Ultra-high-performance concrete (UHPC) has been used as an advanced construction material in civil engineering because of its excellent mechanical properties and durability. However, with the depletion of the raw material (river sand) used for preparing UHPC, it is imperative to find a replacement material. Recycled sand is an alternative raw material for preparing UHPC, but it degrades the performance. In this study, we investigated the use of graphene oxide (GO) as an additive for enhancing the properties of UHPC prepared from recycled sand. The primary objective was to investigate the effects of GO on the mechanical properties and durability of the UHPC at different concentrations. Additionally, the impact of the GO additive on the microstructure of the UHPC prepared from recycled sand was analysed at different mixing concentrations. The addition of GO resulted in the following: (1) The porosity of the UHPC prepared from recycled sand was reduced by 4.45–11.35%; (2) the compressive strength, flexural strength, splitting tensile strength, and elastic modulus of the UHPC prepared from recycled sand were enhanced by 8.24–16.83%, 11.26–26.62%, 15.63–29.54%, and 5.84–12.25%, respectively; (3) the resistance of the UHPC to penetration of chloride ions increased, and the freeze–thaw resistance improved; (4) the optimum mixing concentration of GO in the UHPC was determined to be 0.05 wt.%, according to a comprehensive analysis of its effects on the microstructure, mechanical properties, and durability of the UHPC. The findings of this study provide important guidance for the utilisation of recycled sand resources.

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Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

et al. 2020

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“…Considering the minor error of the abrasion test, it could be said that the relationship between mass loss and abrasion time in Figure 5 was linear in general for the most of specimens. It is well known that the relationship is given by [18]:Abrasion mass loss (g) = k (g/min) × Elapsed time for abrasion (min) where k is a constant for each mixture. Figure 6 summarizes the k values obtained from the results in Figure 5.…”

Section: Resultsmentioning

confidence: 99%

“…Mass losses caused by abrasion were tested according to ASTM C944. Detailed experimental setups for equipment and specimen can be found in elsewhere [18]. Figure 1 shows the specimen setting for the abrasion resistance test and the example of the abraded surface of the specimen.…”

Section: Methodsmentioning

confidence: 99%

Effect of Carbonation on Abrasion Resistance of Alkali-Activated Slag with Various Activators

Kim

Song

et al. 2019

Materials

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The effect of carbonation on the abrasion resistance of alkali-activated slag (AAS) was investigated. Various activator sets were selected for synthesizing AAS specimens, and the compressive strength was measured before and after carbonation. The abrasion resistance of the specimens was measured in accordance with the ASTM C944 test method. The relationship between the mass loss caused by abrasion and compressive strength was analyzed to understand the effect of matrix strength on abrasion resistance. Test results showed that the decrease in compressive strength of AAS specimens by carbonation reduced their abrasion resistance. In addition, the abrasion resistance of AAS before and after carbonation was sensitively influenced by activator type. It can be concluded that additional caution is required when using AAS where abrasion may have occurred.

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“…In addition, the concrete cover can avoid the direct scouring of the concrete by water flow with sediments. To date, the main antiabrasion materials are high-strength concrete [1], such as steel fiber-reinforced concrete [2][3][4][5][6][7] and silicon powder concrete; multicomponent cementitious materials concrete [8][9][10][11], while adding an active admixture, such as I or II fly ash and silicon powder [12][13][14][15] and adding fibers producing antiabrasion concrete [16][17][18][19][20]; fly ash concrete [21][22][23][24][25]; and new types of concrete covers, such as epoxy slurry, epoxy coating, polyurea, and polyurethane elastic-coating materials, as well as other concrete coating materials [26].…”

Section: Research Progressmentioning

confidence: 99%

Hydraulic Abrasion-Resistant Elastic Epoxy Resin Materials

Zhang

Liu

2019

Advances in Materials Science and Engineering

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The abrasion of hydraulic concrete structures caused by the washing action of flowing water is a common problem and cannot be solved by simply increasing the strength of the concrete. To ensure safe operation, increase in service life and reduction of maintenance costs of hydraulic concrete structures and the development of abrasion-resistant materials are required. In this work, polyurethane-modified epoxy resin was synthesized using the interpenetrating network technology (IPN). After many mixing experiments, the ratio of polyether amine to alicyclic amine in Component B was determined to be 29 : 14 and the ratio of Component A to Component B was 7 : 3. With these ratios, elastic epoxy achieved a tensile strength of more than 15 MPa and an elongation rate of more than 20%, thus balancing strength and toughness. The effects of the curing conditions, the ratio of Component A to Component B, and diluents and fillers on tensile strength and elongation of the elastic epoxy resin were analyzed. The results of the analysis indicated that the curing duration should be over 7 days, the optimal proportion of Component A to Component B should be 7 : 3, and the diluent of the elastic epoxy material should be the bifunctional butanedioldiglycidyl ether (622). The reliability of this material was determined by pull-out testing, adhesion, and tensile strength testing. The underwater steel ball test and ring test were adopted as the abrasion-resistance tests for the elastic epoxy resin material. The results showed that the abrasion-resistance performance of elastic epoxy coating improved hundreds of times over that of common concrete. Although the wearing strength was reduced with pressure, the elastic epoxy coating still retained excellent abrasion-resistance performance. At last, future application prospects of elastic epoxy improvement products are introduced and need further reach.

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Abrasion resistance of ultra high performance concrete incorporating coarser aggregate

Cited by 73 publications

References 16 publications

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

Effect of Carbonation on Abrasion Resistance of Alkali-Activated Slag with Various Activators

Hydraulic Abrasion-Resistant Elastic Epoxy Resin Materials

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