
High calcium powder compared to aeolian sand advantages

Research articleEffect of calcium sources on enzymeinduced
2024年8月1日 Calcium acetate is a more suitable calcium source for aeolian sand solidification using EICP The EICP solution amount of 2–3 L/m 2 is suggested for engineering applications EICP can be combined with vegetative method to achieve longterm wind erosion control2024年9月30日 Indeed, the calcium carbonate crystals observed by SEM and XRD enhanced the friction between particles when they wrapped around the sand grains surface, while Mechanical properties of aeolian sand cemented via 1 天前 River sand and highquality aggregates are the most widely used and indispensable building materials in civil engineering However, the overexploitation of river sand made the Optimization in cracking resistance and microscopic 2024年10月12日 Applying MICP to desert sand samples from Kashi, Xinjiang, the results demonstrated significant structural stability and erosion resistance in treated soils during wind Enhancing aeolian sand stability using microbially induced

Multicomponent cementitious materials optimization,
2024年5月1日 Preparation of highperformance concrete using aeolian sand as a total replacement for river sand can achieve higher strength advantages and optimal utilization of 2023年2月27日 Aeolian sand flow is a major cause of land desertification, and it is prone to developing into a dust storm coupled with strong wind and thermal instability The microbially induced calcite precipitation (MICP) technique can Experimental Study on the Mechanical Behaviors 2021年11月19日 The results show that the mechanical properties of UHPC are optimal when the replacement rate of river sand by the equivalent mass of aeolian sand is 30wt% and the Effect of aeolian sand and recycled composite micropowder 2023年8月26日 The results show that the peak strength of aeolian sand solidified by MICPBFR is remarkably higher than that of aeolian sand solidified by MICP alone, and the peak strength rises with the increasing fiber length, Shear Strength Behaviors of Aeolian Sand

Experimental Study on the Aeolian Sand Solidification via
2022年5月11日 The results show that the solidification effect of aeolian sand is more much better based on MICP (4) The reinforced aeolian sand has a dense microstructure and good 2023年10月1日 This paper addresses the performance and environmental impact evaluation of a developed UHPC with recycled mixed powder (RMP) and aeolian sand (AS) The RMP is Feasibility analysis of treating aeolian sand and recycled mixed powder 2023年10月1日 This paper addresses the performance and environmental impact evaluation of a developed UHPC with recycled mixed powder (RMP) and aeolian sand (AS) (300 mm) when the content of aeolian sand is 30% without RMP Compared with the control sample R0A0, the fluidity of sample R0A30 increases by 65%, while that of sample R0A45 decreases by 29% Feasibility analysis of treating aeolian sand and recycled mixed powder 2024年3月28日 The aim of this study is to promote the application of the excited zeolite powder (ZP)with aeolian sand powder (ASP) in the field of aeoliansand concrete (ASC) production This study utilises NaOH to treat composite Mechanical Properties of Aeolian Sand Concrete

Effect of calcium sources on enzymeinduced carbonate
2024年8月1日 Enzymeinduced carbonate precipitation (EICP) is a promising technique for soil reinforcement To select a suitable calcium source and a suitable solution amount for aeolian sand stabilization using EICP, specimens treated with different solution amounts (15, 2, 25, 3, and 35 L/m 2)Surface strength, crust thickness, calcium carbonate content (CCC) and water 2020年12月16日 carbonate aggregate The calcium carbonate content of the aeolian sand was between 60 and 90% (Figure 2) According to the Matcon Testing Laboratory (2018), the cohesion of aeolian sand in the site was zero, and the angle of shear resistance was from 300° to 344°, with an average of 329° ± 100 Average value of aeolian sand (n = 78)Treatments to improve the aeolian sand foundation in 2024年10月12日 The South Xinjiang Kashi region, lying adjacent to the world’s secondlargest mobile desert—the Taklamakan Desert—frequently suffers from sandstorms during the spring and summer monthsEnhancing aeolian sand stability using microbially induced 2024年5月1日 SiO 2 and Al 2 O 3 are mainly chemical compositions of AS with finer particle sizes compared to river sand or machinemade sand [9,10] Based on this, several studies have extensively investigated the feasibility of AS fine aggregate Much research demonstrated that the incorporation of AS can improve the mechanical strength and durability of concrete [11,12]Multicomponent cementitious materials optimization,

Modification and mechanism of polymer in high
2023年9月15日 The addition or substitution of aeolian sand with the optimized mixratio design, comprising an optimal amount of substitution at 20%, could effectively improve particle gradation and increase the material strength [[12], [13], [14]] Additionally, Jiang et al [15] assumed the overall properties of the concrete with 100% aeolian sand improved 2018年10月9日 The results showed that sodium sulfate had a better activation effect on the aeolian sand powder compared with that of sodium hydroxide was as high as 94311%, and the gelling property was Study on the Activity of Aeolian Sand Powder and Alkali 2022年8月1日 The application of aeolian sand to produce concrete for the engineering construction of desert areas has important significance Preliminary studies have suggested that producing highperformance concrete with full aeolian sand (FAHPC) is feasible However, construction in desert areas is often the most vulnerable to harsh climatic conditionsInvestigation of steel fiber reinforced high ScienceDirect2022年8月1日 Highperformance concrete with full aeolian sand (FAHPC) has the characteristics of low water binder ratio, large cementitious materials content and no restriction of coarse aggregates, resulting Investigation of steel fiber reinforced highperformance

Study on the Activity of Aeolian Sand Powder and Alkali
2018年10月9日 fate had a better activation effect on the aeolian sand powder compared with that of sodium hydroxide The activation rate of aeolian sand powder increases the main product was hydrated calcium silicate (CSH) The second type was represented by a midhigh alkaline solutionactivated metakaolin (Si + Al), and the main product was a polymer 2023年3月10日 The application of aeolian sand to produce concrete for the engineering construction of desert areas has important significance Preliminary studies have suggested that producing highperformance concrete with full aeolian sand (FAHPC) is feasible However, construction in desert areas is often the most vulnerable to harsh climatic conditionsPreparation and acceleration mechanism of a ternary 2024年3月4日 Aeolian sand and loess are both natural materials with poor engineeringrelated properties, and no research has been devoted to exploring aeolian sand–loess composite materials In this study, we used aeolian sand Mechanism of Strength Formation of Unfired 2022年12月27日 The advantages are associated with the high calcium content and good filling effect of eggshell powder This includes improved hardened properties, reduced setting time, and increased resistance Recycling and Utilization Assessment of Municipal Solid

Properties of saline soil stabilized with fly ash and modified aeolian sand
3 天之前 For cured soil A1 with varying aeolian sand content, when the aeolian sand content is 0 %, its strength is primarily provided by the alkaline activation of fly ash to generate gel substances After one freezethaw cycle, the unconfined compressive strength of cured soil A1 increases by 1739 %, and after seven cycles, it reaches 55 MPa2023年3月22日 Using local materials to construct building elements as well as transport road facilities, including highways, intercity roads, and roads, in remote areas is a top topic of scholarly research all over the world The main reason for that is the fact that these kinds of materials not only ease the intensity of material transportation but are also costefficient In desert areas, Stabilization of Aeolian Sand for Pavement Subbase 2019年8月9日 The replacement of natural river sand with the aeolian sand of quality substitution rates of 20%, 40% and 60% can be used to compose the aeolian sand concrete, the 28day cube compressive strength Study on durability of ultra high performances concrete with aeolian sand2022年8月1日 Aggregate and sand are main raw materials of cement concrete With the increasing restrictions on mining and the positive response to the “carbon neutralization policy”, it is difficult to obtain highquality construction aggregates [1], [2], [3]Especially in Northwest China, the ecological environment and geological conditions are special, covering a large area of Investigation of steel fiber reinforced high ScienceDirect

Evolution and mechanism on shrinkage of highperformance
2023年10月12日 Aeolian sand possesses the characteristics of smoother surface, finer particles, and greater nonplasticity than river sand [6]Extensive research has verified the feasibility of aeolian sand in producing concrete [7], [8]In recent years, researchers have prepared highperformance concrete (HPC) having excellent workability and mechanical properties using 2024年7月1日 The matrix raw materials of UHPECC include Portland cement (PII 525, C), silica fume (SF), ground granulated blast furnace slag (GGBS), recycled concrete powder (RCP), fine silica sand (80 mesh–120 mesh), water, and high elastic modulus PE fibers with the physical characteristics outlined in Table 1 The RCP utilized in this study was Mechanical performance of lowcarbon ultrahigh 2024年10月11日 In the arid and semiarid regions of northwest China, expansive desert and sandy lands abound, with aeolian sand resources widely distributed [1], [2], [3]The Kubuqi Desert lies on the southern bank of the "Jizi bend" of the Yellow River, bordered by the river to its west, north, and east, as depicted in Fig 1Concrete stands as an essential construction material for Micromorphology and fractal characteristics of pore 2023年7月19日 Aeolian sand is a fine, noncohesive and homogeneous material widely distributed in desert areas, and therefore susceptible to wind erosion, causing serious environmental concerns ThisEffects of Reaction Conditions on EICPTreated Desert

Quasistatic and dynamic mechanical properties of eco
2019年3月1日 The flowability of the UHPCs was significantly improved when adding aeolian sand as fine aggregates, compared with that of the The review starts by introducing the advantages, deficiencies and improvement methods of SHPB system Effect of specimen size on dynamic compressive properties of fiberreinforced reactive powder concrete at 2020年12月1日 The aeolian sand in the Mohammad bin Rashid Al Maktoum (MBR) Solar Park Phase IV Project site in Dubai, United Arab Emirates, is cohesionless, uniformly graded, nonplastic fine sand, with high Treatments to improve the aeolian sand foundation in solar 2021年11月19日 Ultrahigh performance concrete (UHPC) was prepared by partially replacing cement with recycled composite micronized powder The waste bricks and concrete were used as an auxiliary cementitious material The river sand was partially replaced with anthracitic sand The modified AndreasenAndersen (MAA) particle accumulation model was used to design the Effect of aeolian sand and recycled composite micropowder 2022年9月26日 The physical, chemical and mechanical properties of AS are directly related to its application feasibility in construction engineering [19], [2]Compared with river sand and manufactured sand, AS has no edges and corners, finer particles, and obvious nonplasticity [9]Earlier studies have examined the geotechnical and engineering properties of AS and also Mix design and characteristics evaluation of high

Applicability and Theoretical Calculation of Enzymatic Calcium
2020年1月8日 Enzyme induced carbonate precipitation (EICP) is widely studied as a promising technique for soil stabilization and solidification Most related studies are carried out in a room temperature2023年5月1日 Influence mechanism of aeolian sand on the strength of concrete was revealed by using the nuclear magnetic resonance (NMR) to analyze the pore ratio and structures of aeolian sand concrete (ASC Study on the mechanical properties and prediction model of ultrahigh 2024年9月30日 The cementation of desert aeolian sand is a key method to control land desertification and dust storms, so an economical, green and durable process to reach the binding between sand grains needs to be searched The method based on the microbially induced calcite precipitation (MICP) appeared in recent years as a promising process that proved its Mechanical properties of aeolian sand cemented via 2023年7月17日 The main mineral components of magnesium slag are γCa 2 SiO 4 (γC 2 S), βCa 2 SiO 4 (βC 2 S), CaO, and a small amount of MgO βC 2 S exhibits hydration activity, and thus magnesium slag is often studied in research on cement clinker [5], [6], cementitious material [7], desulfurization [8] and brick making [9] This research has provided many ideas for the Mechanical properties and leaching behavior of modified

Feasibility analysis of treating aeolian sand and recycled mixed powder
2023年10月1日 This paper addresses the performance and environmental impact evaluation of a developed UHPC with recycled mixed powder (RMP) and aeolian sand (AS) (300 mm) when the content of aeolian sand is 30% without RMP Compared with the control sample R0A0, the fluidity of sample R0A30 increases by 65%, while that of sample R0A45 decreases by 29% 2024年3月28日 The aim of this study is to promote the application of the excited zeolite powder (ZP)with aeolian sand powder (ASP) in the field of aeoliansand concrete (ASC) production This study utilises NaOH to treat composite Mechanical Properties of Aeolian Sand Concrete 2024年8月1日 Enzymeinduced carbonate precipitation (EICP) is a promising technique for soil reinforcement To select a suitable calcium source and a suitable solution amount for aeolian sand stabilization using EICP, specimens treated with different solution amounts (15, 2, 25, 3, and 35 L/m 2)Surface strength, crust thickness, calcium carbonate content (CCC) and water Effect of calcium sources on enzymeinduced carbonate 2020年12月16日 carbonate aggregate The calcium carbonate content of the aeolian sand was between 60 and 90% (Figure 2) According to the Matcon Testing Laboratory (2018), the cohesion of aeolian sand in the site was zero, and the angle of shear resistance was from 300° to 344°, with an average of 329° ± 100 Average value of aeolian sand (n = 78)Treatments to improve the aeolian sand foundation in

Enhancing aeolian sand stability using microbially induced
2024年10月12日 The South Xinjiang Kashi region, lying adjacent to the world’s secondlargest mobile desert—the Taklamakan Desert—frequently suffers from sandstorms during the spring and summer months2024年5月1日 SiO 2 and Al 2 O 3 are mainly chemical compositions of AS with finer particle sizes compared to river sand or machinemade sand [9,10] Based on this, several studies have extensively investigated the feasibility of AS fine aggregate Much research demonstrated that the incorporation of AS can improve the mechanical strength and durability of concrete [11,12]Multicomponent cementitious materials optimization, 2023年9月15日 The addition or substitution of aeolian sand with the optimized mixratio design, comprising an optimal amount of substitution at 20%, could effectively improve particle gradation and increase the material strength [[12], [13], [14]] Additionally, Jiang et al [15] assumed the overall properties of the concrete with 100% aeolian sand improved Modification and mechanism of polymer in high2018年10月9日 The results showed that sodium sulfate had a better activation effect on the aeolian sand powder compared with that of sodium hydroxide was as high as 94311%, and the gelling property was Study on the Activity of Aeolian Sand Powder and Alkali

Investigation of steel fiber reinforced high ScienceDirect
2022年8月1日 The application of aeolian sand to produce concrete for the engineering construction of desert areas has important significance Preliminary studies have suggested that producing highperformance concrete with full aeolian sand (FAHPC) is feasible However, construction in desert areas is often the most vulnerable to harsh climatic conditions2022年8月1日 Highperformance concrete with full aeolian sand (FAHPC) has the characteristics of low water binder ratio, large cementitious materials content and no restriction of coarse aggregates, resulting Investigation of steel fiber reinforced highperformance