Evaluation and prediction on abrasion resistance of hydraulic concrete after exposure to different freeze-thaw cycles

Exploration of Advanced Fabrication Techniques for Organic Shaped Energy Dissipators in Spillways

“…Another factor involved is the cyclic freezing and thawing. Surface erosion is accelerated by the combined action of cyclic freezing and thawing and other factors, as evidenced by Zhu et al (2022). The above-mentioned steps leading to increased abrasion resistance also affect positively the freeze-thaw resistance, with Lu et al (2021) emphasizing the importance of decreasing the water-to-binder ratio.…”

Effectiveness of Bio-Waste-Derived Carbon Doping on De-Icing Performance of an Electrically Resistant Concrete

“…The wear resistance of concrete is the ability of the concrete surface to resist abrasion. It is known that the use of concrete as a road surface and industrial floors leads to its abrasion, scratching, and slippage due to constant mechanical loads, which result in its surface wear [37,38]. To determine the degree of wear resistance of the concrete, the loss of mass per unit area of the sample and the decrease in the height of the sample subjected to the test were considered.…”

Potential of frost damage of off-ground foundation stones in Norwegian Stave Churches since 1950 using land surface temperature

“…N o Parameters involved Liu et al 2015, [2] (1) D: damage value; Nd: Max F-T cycle when rock failure; q, r: material parameters by fitting curves to experimental values. Zhu et al 2022 [30] (2) Sdr: interfacial expansion area ratio of concrete surface; N: number of FT cycles. Uranjek et al 2021 [31] (3) DI: probabilistic damage index of masonry brick wallet; μ : the ductility of damaged (at n F/T cycles) samples; μ 0 : the ductility of intact (unconditioned at 0 F/T cycles) samples Sahyoun et al 2021 [25] (4) MWI: Modified winter index calculates the level of severity where the MC is higher than the critical level T L : critical value of temperature T i :hourly values of temperature at the investigation point w i : hourly values of moisture content at the investigation point w L : critical value of moisture content Sahyoun et al 2021 [25] (5) FTDR: F-T damage risk index S Ice , Max : Max saturation degree of ice content S Ice , Min : Min saturation degree of ice content Ghobadi et al 2016 [32] ; Mutluturk et al 2004 [33] I N = I 0 e − λN (6) I N : integrity of the tuff after N cycles ...…”

“…– Zhu et al 2022 [30] found a fitting equation (eq. (2)) between the number of FT cycles and the interfacial expansion area ratio.…”

“…To overcome this limitation, several algorithms much more complex have been proposed with climate-based input parameters or with a mix of climate and material response-based parameters. In the first case, they require several climatic data [26] , [28] obtained by weather stations or by using hygrothermal building simulations [29] , and semiempirical models [27] ; in the second case they demand long and costly surveys to gain experimental data to assess the integrity of the material in terms of indexes as damage [2] or integrity [32] value, probabilistic [31] , modified winter, surface frost, and F-T [25] damage risk indices or interfacial expansion area ratio [30] . In this study an effort is done to simplify the algorithm without losing in results reliability.…”