Effect of Dry–Wet Cycles on Properties of High Strength Fiber-Reinforced Concrete

Marushchak, Uliana; Sydor, Nazar; Braichenko, Serhii; Hohol, Marko

doi:10.1007/978-3-031-44955-0_27

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…Combining Figure 9 with Figure 4, it is evident that the compressive strength of the 28-day samples decreases as the number of cycles increases [15] , which is primarily occasioned by the in uence of the wet-dry cycles on the hydration products in cement. Compounds such as ettringite and calcium aluminate hydrates, formed during cement hydration, undergo dissolution and precipitation cycles in the wet-dry process, gradually loosening the material's structure and reducing its strength [16] .…”

Section: Analyzing Wet-dry Cyclingmentioning

confidence: 86%

Performance Analysis of Pipe-Jacking Waste Soils Solidified with Cement under Balanced Earth Pressure Conditions

Youjun,

Zhenyu,

Zhigang

et al. 2024

Preprint

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The utilization of pipe-jacking soil poses challenges due to its complex composition, which comprises polyacrylamide (PAM) and sodium bentonite (Na-Ben) surfactants, hindering drainage and solidification. Improper handling may induce environmental pollution. To address this problem, cement solidification was explored after modification with PAM and Na-Ben. By performing indoor resistance tests, freeze–thaw cycles, wet–dry cycles, SEM, XRD, and IR experiments, it was found that within certain ratios, cement solidification effectively stabilizes pipe-jacking waste soil. Specifically, PAM minimally impacts pipe-jacking waste-soil strength, whereas Na-Ben slightly reduces it. Microscopic analysis revealed that although water absorption hinders hydration reactions, PAM (at lower concentrations) promotes mineral particle cohesion during cement solidification. Na-Ben tends to aggregate, leading to uneven internal structure and inhibiting cementitious product formation

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Section: Analyzing Wet-dry Cyclingmentioning

confidence: 86%

Performance Analysis of Pipe-Jacking Waste Soils Solidified with Cement under Balanced Earth Pressure Conditions

Youjun,

Zhenyu,

Zhigang

et al. 2024

Preprint

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“…However, surveys of structural elements in industrial buildings [1] and bridges [2] demonstrate that several factors affect the durability of concrete or cause structural damage. One of these factors is a change in the internal humidity or temperature of the pores (carbonation, freeze-thaw cycles, wetdry cycles, the influence of chloride salts, and sulphates), as well as the influence of various forms of loading [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Badania nad odpornością powłok ochronnych dla betonu na działanie wilgoci atmosferycznej

Sydor,

Margal,

Gayda

2024

Bud-Arch

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The development of the construction industry has led to increased requirements for the operational properties of building materials in general and concrete in particular. Although concrete is designed primarily to withstand structural loads, it must also resist environmental influences to increase its durability. This article presents the results of the influence of the components of protective coatings on the hydro-physical properties of concrete. The edge wetting angle in concrete with a protective coating ranges from 95 to 101 degrees, which is about twice that of uncoated concrete. The mass of concrete under the influence of hygroscopic moisture increases, and after 30 days of exposure, it is 1.1–1.6 wt. % compared to 5.7–5.8 wt. % for control samples. The minimum increase (1.1–1.2 wt. %) is achieved when using coatings with the largest amount of heat-resistant varnish KO-08. The water absorption of the developed coating compositions decreases after 30 days of being in water from 5.2 to 1.6–2.2 wt. % for C20/25 concrete. Low temperatures negatively affect the hydrophysical properties of protective coatings, but only slightly. It has been found that water absorption increases by approximately 20 %.

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Testing and the Possibility of Using the A-IIIв Periodic Profile Reinforcement for Bridge Running Structures

Babyak,

Vikhot

2024

Lecture Notes in Civil Engineering

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Effect of Dry–Wet Cycles on Properties of High Strength Fiber-Reinforced Concrete

Cited by 10 publications

References 24 publications

Performance Analysis of Pipe-Jacking Waste Soils Solidified with Cement under Balanced Earth Pressure Conditions

Performance Analysis of Pipe-Jacking Waste Soils Solidified with Cement under Balanced Earth Pressure Conditions

Badania nad odpornością powłok ochronnych dla betonu na działanie wilgoci atmosferycznej

Testing and the Possibility of Using the A-IIIв Periodic Profile Reinforcement for Bridge Running Structures

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