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Coarse Aggregate Solutions
Autoclaved steel slag coarse aggregate: A potential solution
Autoclaved steel slag coarse aggregate: A potential solution for sustainable concrete production ScienceDirect Article preview Abstract Introduction Coarse aggregate is considered as the most important component, which provides volume as well as strength to the concrete. It is mainly obtained from natural Alternative coarse aggregate for sustainable and eco
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Recycling of industrial and agricultural wastes as alternative coarse
The effect of coarse aggregate replacement with agricultural and industrial wastes like furnace slag, oil palm shell, coconut shell, waste ceramic tiles, glass, Promoting the use of waste concrete to produce RA and recycled aggregate concrete (RAC) can effectively aid in waste resource conservation and intensification and Property Improvement of Recycled Coarse Aggregate by
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Enhancing the quality of recycled coarse aggregates by
8 Citations Metrics Abstract Generation of solid wastes due to industrialization and urbanization results in dumping of wastes in landfills causing Freeze–thaw (FT) damage is one of the main factors affecting the durability of concrete structures. This paper focused on the effects of the coarse aggregate volume Effects of Coarse Aggregate Content and Salt Solution
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Performance evaluation and lifetime prediction of steel slag coarse
Samples of normal concrete and steel slag coarse aggregate concrete were placed in Na 2 SO 4 solutions with 5%, 10%, and 15% mass fractions to test the Effects of Coarse Aggregate Content and Salt Solution Concentration on Freeze–Thaw Damage in Concrete. AbstractFreeze–thaw (FT) damage is one of the Effects of Coarse Aggregate Content and Salt Solution
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Effect of particle size distribution on the bio-cementation of coarse
The effect of grain size distribution on the unconfined compressive strength (UCS) of bio-cemented granular columns is examined. Fine and coarse aggregates were mixed in various percentages to obtain five different grain size distributions. A four-phase percolation strategy was adopted where a bacterial suspension and a cementation Larger pore diameter and greater pore connectivity in Dolostone-2 aggregate probably aided in the diffusion of mobile ions in pore solution towards the reaction sites on the aggregate surfaces to a greater extent [63], however due to their coarse-grained texture, their reactivity is very restricted [59], [63] in contrary to Dolostone-1Influence of carbonate coarse aggregate properties on
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Utilization of carbonated and granulated steel slag aggregate
Expansion of aggregate in solution was different with that in cement-based, therefore, the volume stability of concrete was needed to be investigated. Download : Download full-size image; Fig. 8. The picture the aggregate after autoclave chake and immersion expansion test and the chaked ratio and expansion ratio of CSA and SSA.Coarse aggregate includes diabase, The results showed that the emulsified asphalt:cement:water solution was better at 5:2:3.5. Then, according to the empirical formula of Tongji University, the optimum emulsified asphalt content of the mixture is approximately 5.4%. Therefore, the amount of cement is approximately 2.2%, and the Effect of different coarse aggregate surface ScienceDirect
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Self-compacting concrete with recycled coarse
The database is constantly expanding with new solutions and algorithms. Some basic and most commonly used solutions are listed below: Coarse aggregate is added as the last element, its volume concentration should be 0.5–0.55 of the bulk density of the coarse aggregate in compacted state, the amount of water should not exceed 185 l / Strengthening recycled coarse aggregate (RCA) by soaking it in a variety of solutions/slurries is being explored by many researchers. However, several problems have appeared, for example, (i) plenty of solution/slurry is needed; (ii) the soaking process is time-consuming; (iii) it is difficult to integrate the soaking process into the recycled aggregate Influences of spraying sodium silicate based solution/slurry
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Enhancing the quality of recycled coarse aggregates by
The pre-soaking of RCA in the acidic solution removes the adhered mortar and improves the quality of RCA. However, increased concentration affects the properties of the concrete. (2018) Carbonated recycled coarse aggregate and uniaxial compressive stress-strain relation of recycled aggregate concrete. Constr Build Mater 188:956–965Aggregate-interlocking concrete is a kind of low-carbon and high-performance concrete, while the aggregate-interlocking concrete prepared by the distributing-filling coarse aggregate (DFCA) process worsens frost resistance than ordinary concrete. In order to better apply the aggregate-interlocking concrete, it is necessary to Influence of Coarse Aggregate Concentration on the Frost
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Frontiers Study on Quantitative Characterization of
The morphological characteristics of aggregate include outline shape, angularity, and surface texture, which determine the mutual extrusion and friction between aggregates, and significantly affect the performance of asphalt pavement. At present, the research on the morphological characteristics of coarse aggregate is mainly focused on DOI: 10.1061/(asce)mt.1943-5533.0003940 Corpus ID: 239706070; Effects of Coarse Aggregate Content and Salt Solution Concentration on Freeze–Thaw Damage in Concrete @article{Li2021EffectsOC, title={Effects of Coarse Aggregate Content and Salt Solution Concentration on Freeze–Thaw Damage in Concrete}, Effects of Coarse Aggregate Content and Salt Solution
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Autoclaved steel slag coarse aggregate: A potential solution
According to Palankar et al. [43], the free lime content of BOF coarse aggregate decreased from 5.33% to 0.16% after nine months of outdoor weathering with regular water spraying. However, in a Pennsylvanian case, SA retrieved from a 30-year-old slag dump used as fill later exhibited disruptive expansion that persisted for some years In alignment with the ASTM C131-89 [55], the Los Angeles abrasion values for the steel slag coarse aggregate and the limestone coarse aggregate were identified as 15 and 21 respectively. The angularity numbers for the slag and natural aggregates were evaluated according to BS EN 12620:2013 [56],resulting in values of Autoclaved steel slag coarse aggregate: A potential solution
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欧路词典|英汉-汉英词典 coarse是什么意思_coarse的中文
coarse aggregate 集料； 骨料. coarse grain n. 谷粒； 晶粒；饲料用谷类. coarse grained 纹理的； 颗粒的. coarse sand 砂（直径为0.2至2.0毫米）. coarse grinding 粉碎， 磨. coarse particle 颗粒； 分子；（颜料） 粒子. coarse powder 粉. coarse coal 大块煤.In this study, ground glass powder and crushed waste glass were used to replace coarse and fine aggregates. Within the scope of the study, fine aggregate (FA) and coarse aggregate (CA) were(PDF) Using Glass Wastes as Partial Replacement of Coarse
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Evaluation of coarse aggregate movement and contact
Request PDF Evaluation of coarse aggregate movement and contact unbalanced force during asphalt mixture compaction process based on discrete element method To evaluate the stability of asphaltThe term coarse aggregate replacement ratio (CRR) is defined as the ratio of weight of recycled coarse aggregate to the total weight of coarse aggregate used in the mix. In this study, four concrete mixes namely MCRR 0.0, MCRR 0.25, MCRR 0.5 and MCRR 1.0 are prepared with a coarse aggregate replacement ratios of 0.0, 0.25, 0.50 Influence of field recycled coarse aggregate on properties
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Evaluation of self-healing in concrete with limestone coarse aggregate
2053-1591/9/2/025506. This study investigated the self-healing process in concrete using limestone coarse aggregate impregnated with sodium silicate solution and encapsulated with polyvinyl alcohol (PVA). It discussed the self-healing mechanism by sodium silicate solution and evaluated the effect and the efficiency of this healing agent.The coarse aggregate with three size ranges (5–10 mm, 10–16 mm, and 16–20 mm) and a fineness modulus of 2.73 were used to prepare the specimens. The alkaline activator solution was prepared at least 24 h before the synthesis of the geopolymer by mixing a liquid sodium silicate (water glass, WG) and a pellet sodium hydrate Effect of Size of Coarse Aggregate on Mechanical Properties
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Evaluation of Aggregate Durability Performance Test
repetitive freeze/thaw cycles. At the end of the test, the aggregate grading is analyzed to determine the percent loss of the aggregate sample. Typical limits on percent loss are 12 percent for coarse aggregate and 15 percent for fine aggregate. In Arkansas, aggregate soundness is governed by the sodium sulfate soundness test.Considering the significant advantages of adding coarse aggregate to 3D printing concrete (3DPC) that include low cementitious material consumption, low carbon footprint, cost saving and shrinkage reduction etc., this investigation focuses on 3DPC with coarse aggregates. The effect of paste-aggregate ratio (P/A) on the printability of 3DPC Optimization of 3D printing concrete with coarse aggregate
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