Chemical composition of soil organic carbon and aggregate …

@article{Wu2021ChemicalCO, title={Chemical composition of soil organic carbon and aggregate stability along an elevation gradient in Helan Mountains, northwest China}, author={Mengyao Wu and Danbo Pang and Lin Chen and Xuebin Li and Li-Zhen Liu and Bo Liu and Jingyao Li and Jifei Wang and Longlong Ma}, journal={Ecological Indicators}, …

Effect of chemical composition of aggregate on interfacial …

DOI: 10.1016/J.CONBUILDMAT.2017.04.061 Corpus ID: 136315812; Effect of chemical composition of aggregate on interfacial adhesion property between aggregate and asphalt @article{Yanping2017EffectOC, title={Effect of chemical composition of aggregate on interfacial adhesion property between aggregate and asphalt}, …

Chemical composition of aggregates obtained using XRF.

Concrete is the most widely used construction material worldwide. The concrete mainly consists of cement, water, fine aggregate (FA), and coarse aggregate (CA). CA is the main constituent of ...

Recycled aggregates and their properties

However, the most studied parameters of the chemical composition of aggregates for new concrete are not the majority components, but the ones that could affect the performance and durability of the new concrete or the rebars. The most studied are the sulfate, chloride, and alkali content. Download : Download full-size image; Figure …

Chemical Composition of Organic Carbon in Aggregate

Additionally, chemical composition of the OM in the clay fraction of soils from 0–20 cm, 20–40 cm and 40–70 cm and the four density fractions from soils at 20–40 cm depth was characterized ...

Chemical composition of the aggregates. | Download …

The chemical composition of the aggregates is given in Table 2. The main component of the aggregates (GEGA and GAA) was SiO 2 silica, and its content was 33-63% in GEGA and 52.82% in GAA ...

The chemical composition of mineral trioxide aggregate

Abstract. Mineral trioxide aggregate (MTA) is composed of Portland cement, with 4:1 addition of bismuth oxide added so that the material can be detected on a radiograph. The cement is made up of calcium, silicon and aluminium. The main constituent phases are tricalcium and dicalcium silicate and tricalcium aluminate.

Aggregates | SpringerLink

Thus, some types of aggregates contain minerals that chemically are reactive and can affect the final suitability of the mix. Alkali-silica reaction in concrete (see Chap. …

Aggregates for Concrete

Naturally occurring concrete aggregates are a mixture of rocks and minerals (see Table 5-1). A mineral is a natu-rally occurring solid substance with an orderly internal structure and a chemical composition that ranges within narrow limits. Rocks, which are classified as igneous, sedi-mentary, or metamorphic, depending on origin, are gener-

Frontiers | Influence of aggregate chemical …

The chemical composition characteristics of aggregates include specific surface area, surface energy, and pH. Specific surface area refers to the total area possessed by a unit mass of substances and is inversely …

Chemical composition of different types of …

About 40% higher compressive strength is reported for concrete when 20% of fine aggregate is replaced by FGA [15]. Conversely, about 5%, 8%, and 42% lower compressive strength were found when 10% ...

Chemical composition of soil organic carbon and aggregate …

The RDA analysis confirmed that aggregate stability were significant associated with SOC content and chemical composition such as O-alkyl C, indicating that the soil labile carbon pool was most ...

Soil Pore Size and Geometry As A Result of Aggregate

Changes in chemical composition have been shown to aff ect the size and stability of aggregates and, consequently, the hydraulic properties of the soil (Lebron et al., 2002). Th e addition of FYM ...

Effect of Chemical Composition of Fine Aggregate on the …

The influence of aggregate chemical composition on concrete sulfuric acid resistance was investigated by some researchers. Chang et al. studied the sulfuric acid resistance of different concrete mixtures containing calcareous limestone aggregates and siliceous aggregates to a 1% sulfuric acid solution over 168 days. The results indicated that ...

Effects of substitution of chemical fertilizer by Chinese

The difference of chemical composition of mSOC among various treatments of macroaggregates was more obvious than that of microaggregates. ... J. et al. Effects of substitution of chemical fertilizer by Chinese milk vetch on distribution and composition of aggregates-associated organic carbon fractions in paddy soils. Plant …

Properties and composition of recycled aggregates from

Arising from a systematic, as opposed to narrative, literature review of 236 publications published over a period of 38 years from 1977 to 2014, the paper examines the factors affecting the physical, chemical, mechanical, permeation and compositional properties of recycled aggregates sourced from construction and demolition waste, …

Chemical composition and physical properties of fine aggregates.

The chemical com- position and physical properties of fine aggregates are pre- sented in Table 2. The main chemical constituents of the basic-oxygen furnace slag are CaO, Fe 2 O 3 and SiO 2 . ...

Increased Soil Aggregate Stability by Altering Contents and Chemical …

Mollisols include an abundance of soil organic carbon (SOC) which is easily influenced by fertilization management. Manure addition could enhance soil aggregate stability; however, the dominating factor affecting its stabilization remains controversial. The fertilization practices were initiated in 2012 to investigate the influences of different …

Different Chemical Composition of Aggregate Impact on …

Enrichment of Ca(OH) 2 in interfacial transition zone was affected by chemical and physical properties of aggregates, such as chemical composition and water absorption. The Ca(OH) 2 enrichment degree and interface width were ordered, respectively as follow: sandstone > basalt > limestone and sandstone > limestone > …

Chemical composition of soil organic carbon and aggregate …

Therefore, our specific objectives were to: (i) determine the distribution and stability of soil aggregates along an altitude; (ii) identify the composition of soil organic …

Chemical composition of the aggregates (%) …

Sustainability 2021, 13, x FOR PEER REVIEW 4 of 20 chemical composition of the aggregates is presented in Table 4. The data have been taken from a paper published by one of the authors [30 ...

Chemical composition of different types of aggregate.

About 40% higher compressive strength is reported for concrete when 20% of fine aggregate is replaced by FGA [15]. Conversely, about 5%, 8%, and 42% lower compressive strength were found when 10% ...

Effect of chemical composition of calcined bauxite aggregates …

The adhesion property that between aggregate and asphalt is composed of physics and chemistry interactions, which is linked to the mineral/chemical composition of the aggregate. Because silica phases show acidic, while alumina phases are slightly basic,Al 2 O 3 and SiO 2 present opposite relationship with adhesion property.

Impact of the chemical composition of aggregates on the …

This work aims at identifying the chemical properties of aggregates that influence the quality and durability of these systems. To accomplish this goal, three …

Influence of aggregate mineralogical composition on water …

The effects of aggregate mineralogical composition on moisture sensitivity of aggregate–bitumen bonds were investigated using four aggregate types (two limestone and two granite), two types of bitumen (40/60 pen and 70/100 pen) and three mechanical tests: peel test, PATTI test and pull-off test, as a function of moisture immersion time.

Interfacial Composition of Surfactant Aggregates in the …

In recent years, there has been increasing interest in daily-use chemical products providing a pleasant scent. The added fragrance molecules may induce microstructural transitions of surfactant aggregates, which further affect the physical and chemical properties of the products. Here, the effects of four types of aromatic alcohols …

Current Applications of Recycled Aggregates from …

2.1. Composition and Chemical Characteristics of Recycled Aggregates (RAs) Recycled aggregates (RA) composition is mainly dependent on its sources (concrete, masonry, bricks, roads, etc.), which can vary by location. In some countries, fired bricks are the main construction material, while in others, masonry and wood are the …

Physical, chemical and mineralogical characterization of …

The chemical analysis showed that all the samples had acid-soluble chlorides up to 0.04 % and water-soluble sulfates up to 0.37 %. Given the acceptance criteria of NEN 12620:2002+A1:2008 [30] for recycled concrete aggregates, all investigated samples with particle range 0–4 mm, can be used in structural concrete. Mineralogical composition of ...

Different Chemical Composition of Aggregate Impact on …

Enrichment of Ca(OH)2 in interfacial transition zone was affected by chemical and physical properties of aggregates, such as chemical composition and water absorption. The Ca(OH)2 enrichment ...

Quantitative characterization of aggregates and their …

To this end, extensive research has been conducted on aggregates, the chemical composition of aggregates, gradation, surface energy, specific surface area, …

Impact of the chemical composition of aggregates on the …

Then the aggregates' composition, shape, and texture properties were evaluated using a scanning electron microscope (SEM), needle-like content, and gray-level co-occurrence matrix. Finally, the impact of temperature, asphalt type, aggregate grain size, and surface texture on the adsorption evolution was studied based on the SHRP …

Chemical Composition of Bio-aggregates and Their

The chemical composition of bio-aggregates can strongly influence their properties (compressibility, durability, chemical and/or physical interactions with mineral species etc.) and consequently those of the composite containing them (setting time, hydration mechanisms, mechanical properties, durability, etc.). Nevertheless, few studies …