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2021.2.24 粗骨料（石）coarse aggregate：粒径大于4.75mm的岩石颗粒，包括卵石和碎石： 细骨料（砂） fine aggregate：粒径小于4.75mm的岩石和颗粒，包括天然砂和人工砂。 3、粗骨料不规则颗粒 irregular particle in coarse aggregate 卵石、碎石颗粒最小一
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2022.8.1 The findings reveal that: (1) The coarse aggregate crushing affects the concrete stress–strain curve. Increasing the content of crushable coarse aggregates can
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2022.8.25 Aggregate Crushing Value Test (ACVT) under Static Load. In this study, static ACVTs on various types of coarse aggregates, as mentioned above, were done to obtain insight into the crushing
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2022.11.8 The aggregate crushing value test (ACV, BS 812-Part-110) is one of the test methods for determining the crushing resistance of the aggregates. Alvarado et al. [
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2021.7.27 Crushing processes are particularly important for enterprises of building and road areas because due to the crushing process, it is possible to achieve the high
Read More2018.1.30 A three-stage crushing cycle for a recycled aggregate, with surface crushing, mortar crushing, and natural aggregate crushing, is proposed. This cycle was
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2022.8.1 Coarse aggregate crushing has a significant impact on concrete deformation and failure characteristics. The coarse aggregate geometries with actual shapes are
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2023.1.8 Characteristics of cracks in original samples: (a) Basalt aggregate 1, non-flaky grains, +8 mm; (b) Basalt aggregate 1, non-flaky grains, +16 mm; (c) Basalt
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2020.2.8 This research involves the optimization of aggregate production using the Taguchi approach to maximize the production rate of Gneiss stone. The L18 orthogonal
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2020.4.20 Crushing is the process of reducing the size of materials so that they can be further processed, the crushing process usually include 3 stages: primary crushing, secondary crushing, and the tertiary
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2022.9.13 Cement Portland pulverized fuel ash cement (PPFAC) 水泥和硅酸盐粉煤灰水泥. BS EN 196-1: 2016 Methods of testing cement Part 1: Determination of strength水泥试验方法第1部分：强度的测定. BS
Read MoreAGGREGATE翻译：聚集体，集成体;总数，合计, 骨料，集料，粒料（建筑用的小石料）, 合计的，总的；总数的, 使聚集，使积聚。。
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2021.5.1 The aggregate crushing value is a crucial essential index to evaluate a material’s crushing resistance based on current specifications for road base construction. In this study, the addition of brick or mortar reduced the aggregate crushing value, causing difficulties in reusing CDW for high-quality road bases.
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2022.8.1 The effect of coarse aggregate crushing on the mechanical properties of normal concrete and high-strength concrete during the uniaxial compression test is investigated. The findings reveal that: (1) The coarse aggregate crushing affects the concrete stress–strain curve. Increasing the content of crushable coarse aggregates can
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2023.3.29 The analyzed impact values and aggregate crushing grade of the Wargal Limestone and Chhidru Formation remain at 13.26 and 12.26%, 13.84 and 10.78%, respectively (Figs. 3, 4). Moreover, the ...
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2021.12.1 As aggregate crushing and impact tests require a different set of . equipment, therefore, the motive behind the study is to . accurately predict th eir test result s using a simplified test .
Read More2022.8.1 The effect of coarse aggregate crushing on the mechanical properties of normal concrete and high-strength concrete during the uniaxial compression test is investigated. The findings reveal that: (1) The coarse aggregate crushing affects the concrete stress–strain curve. Increasing the content of crushable coarse aggregates can
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2023.5.27 Aggregate crushing resistance/TPFV increases with curing age and binder content due to the development of a denser microstructure and a strong bond between the particles and matrix [4, 53]. The increased pelletization duration improved aggregate strength [ 44 ], and accelerated curing with increased duration also positively influenced ...
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2021.10.16 When the particle size was 9.5–16 mm, the average crushing strength of recycled brick particles and concrete recycled gravel particles increased by 51.6% and 45.8%, respectively, and the crushing strength of brick was significantly lower than that of concrete recycled grave. According to the fractal characteristics of aggregate impact ...
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2024.1.3 The Aggregate Crushing Value (ACV) test is a crucial procedure to determine the resistance of aggregates to crushing under gradually applied compressive loads. In subjecting a sample of aggregates ...
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2024.1.17 The aggregate crushing value test is normally carried out on aggregates between 10 mm and 12.5 mm in scale. In this test, a specified quantity of oven-dried aggregates (about 500g) that ...
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2018.11.14 NOTE 1 -The ‘aggregate crushing value’ gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggre- gate of ‘aggregate crushing value’ 30 or higher, the result may be anomalous, and in such cases the ‘ten percent fines value’ should be determined instead. ...
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4 天之前 The aggregates crushing value test should be performed as per IS code 2386 Part IV. First, fill the sample aggregate with one-third of the cylindrical measure in three layers. Each layer should be tamped 25times freely. After filling the sample aggregate, weigh and record it as W1. Now fill the aggregate in the mould along with the plunger on top.
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2022.8.25 The crushing characteristics of coarse aggregates for asphalt concrete were investigated under static and dynamic aggregate crushing value tests (ACVTs). The effect of various compaction loads was ...
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2019.1.1 The coarse aggregates obtained by different crushing mechanisms (jaw and impact crushers) show very similar characteristics in terms of binder content assessed by acid leaching (27.5 and 26.6 wt.%), water absorption (8.76 and 9.75 wt.%) and porosity (18.6 and 20.2 vol.%).Thus, it is not possible to conclude that any of these mechanisms
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2012.4.24 The crushing strength test was performed as per BS 812, part 110 (Methods for determination of aggregate crushing value 1990). Practically, individual pellets were placed between two parallel plates and loaded diametrically until failure occurred. The sketch of crushing strength test apparatus is shown in Fig. 3. Crushing test was
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压碎值是指 集料 抵抗压碎的 性能指标 ， 集料压碎值 用于衡量石料在逐渐增加的荷载下抵抗压碎的能力，是衡量石料力学性质的指标，以评定其在 公路工程 中的 适用性 。. 压碎值是按规定试验方法测得的被压碎碎屑的重量与试样总重量之比，以 百分数 表示 ...
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2022.8.25 The crushing characteristics of coarse aggregates for asphalt concrete were investigated under static and dynamic aggregate crushing value tests (ACVTs). The effect of various compaction loads was also examined by using a Marshall hammer, gyratory compactor and steel roller. Six types of coarse aggregates were tested, including basalt
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2021.9.15 Crushing. After demolding, the specimens were crushed immediately using a compressive loading machine (loading rate: 0.5 kN/s). The one-day compressive strengths of these geopolymer cubes were recorded, which could be an index reflecting the energy demand for crushing the geopolymer in massive aggregate production.
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The aggregate crushing value is defined as the percentage of grains crushed into grains smaller than ¼ of the lower sieve size of a given fraction. The ACV can be used to classify the aggregate and assess its suitability for the proper concrete.
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2023.9.2 Theoretical research shows that the crushing strength of coarse aggregate particles in road construction projects obeys Weibull distribution [36,37,38]. In practice, the parameters of the Weibull model can be tested by indoor crushing experiments. Weibull statistics is an effective tool to study the influence of size effect on strength.
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2023.1.8 The use of mineral aggregates is related to the increasing demand in construction, railway and road infrastructures. However, mineral aggregates can appear to be of variable quality, directly affecting their suitability for respective earthwork applications. Since the production of mineral aggregates should ensure the standardized, high-quality
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2023.11.27 These tests include the aggregate crushing value (ACV) test (ASTM D 5821, 2001), which measures the resistance of aggregates to crushing under a compressive load of 400 kN; and the aggregate impact value (AIV) test (ASTM D 5874-16, 2016), which measures the resistance of aggregates to sudden impacts; the Los Angeles abrasion
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2019.3.1 This study assesses dust emission and dispersion from crushing in open-pit quarries. Measurements were conducted in six aggregate quarries, labelled from 1 to 6, where the crusher is assumed to be the most significant source of dust. Measurements were made under real operating conditions with optical measurement device.
Read More2023.5.13 Aggregate Crushing Test. Aggregate crushing test is a standard method of measuring the strength of coarse aggregates used in concrete. The test involves applying a gradually increasing compressive load to a sample of aggregate until it fails or fractures.
Read More2023.12.28 本文件给出了骨料骨料破碎值（ACV）的测定方法。. 这给出了在逐渐施加的压缩载荷下骨料破碎阻力的相对测量。. 该方法适用于通过 14.0 mm 试验筛并保留在 10.0 mm 试验筛上的集料。. 对于其他粒度级数，推荐的方法见附录A。. 本次试验所采用的骨料粒
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2017.3.15 It can be concluded that both strength loss rate and mass loss rate increased by substantially with crushing index of recycled aggregate. For example, at 50 times freeze-thaw cycles, strength loss rate increased from 6.6% to 18.7%, and the mass loss rate increased from 2.3% to 8.5%. When crushing index is greater than 24%, the
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5 天之前 Aggregate crushing value is defined as the percentage by weight of the crushed (or finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and the strength of the aggregate used in road construction is expressed by numerical index. Aggregates with lower crushing value show a lower ...
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2020.9.15 After secondary crushing using an impact crusher or an E-crusher aggregate crushing plant, the concrete was graded into three types of fine and coarse recycled aggregates with sizes of 10–30 mm, 5–10 mm, and smaller than 5 mm. The natural aggregate used in the test was granite, including 10–30 mm, 5–10 mm, and smaller than
Read MoreThe principal aggregate tests of rocks in the laboratory include aggregate crushing, aggregate impact, aggregate abrasion resistance, aggregate water absorption, specific gravity, density and ...
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