— Moreover, microbial biomass carbon (MBC) amounts in aggregates were remarkably increased (27–116%) by the application of OM. And MBC had a positively …
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— Micro X-ray computed tomography (X-ray CT) have been monitored the carbonation depth evolution of cement mortar with different additions (0%, 30%, 50% and 70%) of blast furnace slag (BFS), respectively. ... Effects of aggregate size and content on carbonation. Three size of aggregates ...
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— The significant interaction effect of site and fertilization suggests that the fertilization effect on the aggregate communities differs depending on site. This interaction was stronger in macro- and micro-aggregates than in silt + clay, implying that fertilization-induced changes in microbial communities in large aggregate-size fractions rely ...
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— Background and aims Conservation tillage enhances soil aggregate function, —a key factor for promoting soil nutrient cycling and plant growth. However, there is a limited understanding of how tillage practices impact soil nutrients, enzymes and microbes distribution among different-sized aggregates, and their potential subsequent effects on …
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— Aggregate micro fines (AMF) were usually included in the machine-made sand during the stone breaking process. Different AMF contents could be included in different batchs of machine-made sand, and thus causing different concrete properties, like the volume stability. In order to explore the influence of AMF contents in machine-made …
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— The micro-aggregate effect occurs when the fly ash is added to the cement-stabilized macadam material. The aggregate without the fly ash is not compact. The spherical particles of the fly ash can fill the micropores formed by the sand, and the aggregate compactness is significantly improved [31,32,33]. The cement hydration …
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— The performance of fly ash blended concrete is influenced by the pozzolanic and/or micro-aggregate effect of fly ash particles based on the replacement levels. …
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— Abstract Organomineral associations in micro-aggregate architecture are important in soil functions. The effect of greenhouse management on micro-aggregation should be investigated to rationally maximize the benefits of solar greenhouses. The relationships between combined organic matter and inorganic minerals were studied …
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— This phenomenon is due to the pozzolanic reaction and micro-aggregate effect of fly ash changing the microstructure of the ITZ of the sample [17]. The pozzolanic reaction refers to the reaction of calcium hydroxide (CH) that occurred from cement hydration with fly ash to produce calcium-silicate-hydrates (C-S-H). C-S-H can …
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— In view of this, in the present study, 0%, 20%, 30%, 35%, 40%, 50%, 60% and 70% of fly ash is replaced for cement to investigate the dominance of pozzolanic or micro aggregate effect.
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— A significant effect of aggregate size on AOA and a significant effect of fertilization on AOB abundance were observed, respectively (P < 0.05, ... Consistent with our hypothesis, significant decreases in micro-aggregate mass were measured in NPKS and NPKM treatments compared to the Control and NPK treatment.
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Results show no-till with the highest carbon (C) content and the highest macro- and microaggregate stability over time. The findings also show a strong relationship between the increase in SOC content and the …
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— The micro-aggregate effect of fly ash means that the fine particles in fly ash are uniformly distributed in the cement slurry, filling voids and pores, improving the pore structure of concrete and increasing the compactness [115]. The active effect of fly ash refers to the chemical effect produced by the active components.
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Digital adoption and productivity: understanding micro drivers of the aggregate effect. Natália Barbosa and Ana Faria Additional contact information ... Abstract: Digital technologies have the scope to engender positive effects on productivity at firm and aggregate level. However, empirical evidence and theoretical contributions are ...
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— Revealing the nuances of assembly processes in aggregates is critical for understanding the fine-scale organization of the soil microbiome and associated …
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The aggregate is a natural material with a well-defined crystal structure and patterns of textures or microcracks due to physical and chemical effects; these characteristics can be observed from the aggregate surface, as shown in Fig. 11 c,d. We hardly observed significant differences from the aggregate surface morphology at different heating ...
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— Macroeconomics provides a more aggregate view of economies. Key Takeaways Microeconomics studies the decisions of individuals and firms to allocate resources of production, exchange, and consumption.
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— Six et al. suggested that the very small effect of organic farming on micro-aggregate characteristics and associated carbon (C) stabilization may be caused by the effect of tillage on aggregate turnover. The paucity of organic resources that stimulate the formation of micro-aggregates during passage through earthworms and other biotic …
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Kohler et al. (2010) reported the effect of Glomus mosseae on aggregate stability in the saline rhizosphere of Lactuca sativa L. and showed that the mycorrhizal inoculation was effective in increasing shoot biomass, ... The critical distinction between micro-and macro-aggregates and the forces that lead to their formation and persistence, as ...
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micro-aggregate architecture have major effects on many soil functions, such as water storage and trans-port, cycling of carbon, nitrogen and other plant nutrients [8, 11, 17]. In micro-aggregate, specific compounds having certain chemical functional groups may be responsible for binding organic carbon to min-eral surfaces [11, 22].
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Downloadable! Digital technologies have the scope to engender positive effects on productivity at firm and aggregate level. However, empirical evidence and theoretical contributions are ambiguous as mixed findings and diverse explanations have been put forward. We use a rich and representative sample of Portuguese firms over the period …
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— Soil organic carbon (SOC) concentration in WSA0.106-0.25,WSA2-5 mm and WSA0.5-1 mm had a dominant effect on aggregate stability. Simutaneously, SOC in WSA>5 mm affected SOC concentration in ...
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— Spatio-temporal microbial regulation of aggregate-associated priming effects under contrasting tillage practices. Author links open overlay panel Yeye Zhang a ... (P < 0.05), which ranked as mega-aggregate > macro-aggregate > micro-aggregate. Similarly, over 160 days CT also showed higher cumulative residue C emissions than NT for the …
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The effect of greenhouse management on micro-aggregation should be investigated to rationally maximize the benefits of solar greenhouses. The relationships between …
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— 1. Introduction. The anti-skid performance of the asphalt pavement is closely related to the texture [1] which includes: the micro-texture of the aggregate surface and the macro-texture formed between the aggregates. Studies have shown that the micro-texture plays a vital role in the anti-skid performance, when the driving speed of the vehicle is …
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— Vegetation restoration is expected to improve soil microstructure and therefore enhance soil stability and reduce soil erosion. The objective of this study was to evaluate the effect of long-term vegetation restoration on the modification of aggregate microstructure with synchrotron-based high resolution X-ray micro-computed …
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— In order to investigate the effects of binding materials on microaggregate composition of the unamended residues, sodium humate (C 9 H 8 Na 2 O 4) (pH 11–12), hydrogen peroxide (H 2 O 2, 30 % v/v), sodium chloride (NaCl) (analytical reagent grade), calcium chloride (CaCl 2) (analytical reagent grade), hydrochloric acid (HCl) (12 mol/L), …
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— Request PDF | Combined effect of lightweight fine aggregate and micro rubber ash on the properties of cement mortar | Abstract. Exterior walls in buildings are exposed to various forms of thermal ...
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Exterior walls in buildings are exposed to various forms of thermal loads, which depend on the positions of walls. Therefore, one of the efficient methods for improving the energy competence of buildings is improving the thermal properties of insulation plaster mortar. In this study, lightweight fine aggregate (LWFA) and micro rubber ash (MRA) from recycled …
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— Some people think that AMF has physical filling effect as micro aggregate [3, 4]; some think that it will make water increase for its greater specific surface area [[5], [6], [7]]; others think that AMF has an optimal content for some mortar or concrete [8, 9], for example, limestone AMF can improve the rheological properties of paste [[10 ...
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— Organic fertilizer and large macro-, micro- aggregates had positive total effects while chemical fertilizer and small macro-aggregate had negative total effects on bulk soil microbial community, and micro-aggregate exerted the highest positive effect among all aggregates (Fig. 6 D).
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— Our results demonstrate how soil texture governs aggregate size distributions: most water-stable microaggregates were found to be of approximately 30 …
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— The micro-aggregate effect plays its role in both high-strength and super-high-strength cementitious materials and its existence makes up for the negative effect on …
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— The micro-mechanical properties of ITZ have a strong linear correlation with the compressive strength of concrete, indicating that coarse aggregate size has a corresponding effect on the compressive strength of concrete by changing the micro-mechanical properties of ITZ.
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— The current results are consistent with the findings of Wang et al. (2016), who studied the distribution of micro-aggregate-associated C in tea plantations and confirmed that the consequence of aggregate hierarchy was an increase in organic C concentrations with increasing aggregate size. On the other hand, the overall trend of total N ...
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