characteristics of mining sand in concrete

There is a need to study shape characteristics of manufactured sand, effect of micro fines on concrete characteristics such as modulus of elasticity, shrinkage, creep etc., concrete mix proportioning by resorting to particle packing approach is the need of the hour when it comes to use of manufactured sand as a replacement to natural river sand ...

The most common type of alternative materials that are applying to substitute the sand in concrete is quarry dust, crushes and, manufactured sand, stone dust. Among all of the various alternative cementitious materials, sugarcane bagasse ash and quarry dust are the most readily available and are employed extensively by various …

Materials 2023, 16, 2080 3 of 15 In order to study the effect of fine aggregate characteristics on the fracture toughness of sand concrete, aggregates with different fineness modulus, FAA and ...

According to the research on alternative materials for river sand for many years, it is found that ultra-fine sand can be used as a substitute for river sand in concrete as fine aggregate [4,5]. Yugen Li [6] et al. revealed the influence mechanism of aeolian sand on the mechanical properties of concrete from multiple scales.

1 Citations. Abstract. Sand extraction from beaches and inland dunes and dredging from ocean and river beds have significantly increased in recent decades. …

The fracture toughness of sand concrete is affected by aggregate characteristics. In order to study the possibility of exploiting tailings sand, available in large quantities in sand concrete, and find an approach to improve the toughness of sand concrete by selecting appropriate fine aggregate. Three distinct fine aggregates have …

With the economic development and increasingly serious resource problems, in 2019, Chinese sea sand mining output will be more than 450 million tons, and the proportion of sea sand used for construction in Ningbo and Zhoushan areas will exceed 90 % [11], [12]. ... Seawater characteristics. For concrete, water plays an important role …

In this work, manganese tailing sand concrete (MTSC) was prepared using manganese tailing sand (MTS) in replacement of river sand (RS) to alleviate the …

The strength of crushed limestone sand concrete was also investigated. It was shown that the fracture energy of concrete was little influenced by the type of fine aggregate. In addition, the fracture energy of crushed sand concrete was slightly higher than that of river sand concrete. This seems to be due to very fine sand (VFS) included …

The load-bearing characteristics and failure mode of CFSTCPs in the sand-rock composite ground are revealed through model tests. • The dimensionless relationship between ζ b and l r and σ c is derived to evaluate the critical rock-socketed length.. An empirical method for calculating the ultimate bearing capacity of CFSTCPs in …

The effect of MTS content on MTSC fluidity is shown in Figure 4. It can be seen that with the increase in MTS content, the fluidity of MTSC continues to decline. …

The mechanical and environmental properties of coal gangue sand concrete were studied experimentally and theoretically by considering concrete strength grades (C30, C50) and replacement ratios (0, 25%, 50%, 75%, ). ... the microstructural characteristics of the typical GSC fragments were observed by scanning electron …

Benhalilou and al, 2020 [10] in their studies on sand concrete, substituted 5%, 10%, 15% and 20% of the volume of dune sand by a marble waste sand, they found acceptable results from the point of ...

Manufactured sand, obtained through mining, mechanical crushing, and processing of rocks has particle sizes less than 4.75 mm. Due to the increasing scarcity of natural sand, there is a growing ...

Some of the engineering properties of fresh and hardened concrete measured were density, slump, water absorption, compression, flexural and split tensile strength. All the concrete specimens were made with gravel as coarse aggregate. Some of these characteristics of the concrete measured in the laboratory are shown in Table. 1.

When the water–cement ratio is 0.4, the copper tailing concrete shows more compressive strength than that of control mix, till 40% substitution (90 day strength). Similar trend can be seen till 20% substitution in 0.45 w/c …

This paper deals with the effect of characteristics of sand concrete using quarry sand. Three specimens were produced of quarry sand with a ratio of 40%, 50% and 60%, respectively. In this study ...

Three types of sea-sand concrete (SSC, CASC and DTC) were partially submerged in seawater for 420 days. The mass changes, mechanical properties (compressive strength and dynamic modulus) and water absorption of sea-sand concrete were monitored. Combined with the thermodynamic simulation, EDS and MIP …

1. Introduction. With the amount of infrastructure construction growing, a rapid increase in the consumption of cement-based materials appears, resulting in shortages of cement, sand, and aggregates [1, 2, 3].Especially in deserts or neighboring areas, such as Northwest China, the Middle East and North Africa, large areas covered by aeolian sand …

1. Introduction. Sand has become an essential natural resource consumed widely as construction materials, mainly in concrete and mortar [1], [2].The sand demand in the construction industry has increased globally due to higher living standards and urban expansion [3], [4].The river sand, which makes up around 2/3rd volume of the concrete, …

Fine aggregates were obtained from both desert sand and mining sand sources. It is essential to highlight that 95% of the desert sand particles could pass through a 0.3 ... These findings strongly suggest that using clean desert sand does not contribute positively to improving the tensile characteristics of concrete. Notably, at 56 days of …

Concrete is one of the most commonly used construction material and its manufacture leads to the economic growth of any country (H.M. and Unnikrishnan, 2022; Li et al., 2023) Aggregates are the inert materials rich in silica, calcium, magnesium, and other minerals that act as filler material and yield good bonding between cement and …

The reduction in density of concrete made with waste foundry sand is expected, due to the physical characteristics of waste foundry sand which are fineness …

The mining tailings are varied, and their characteristics depend on the specific mineral extracted. Tailings are the residues resulting from the selective recovery process of certain minerals. ... Very similar compressive strength values are achieved compared to the conventional concrete when sand is replaced with mining tailings as …

Abstract. In this work, manganese tailing sand concrete (MTSC) was prepared using manganese tailing sand (MTS) in replacement of river sand (RS) to alleviate the shortage of RS resources and ...

The increasing use of copper and its allied materials across many industries is ramping up copper mining activities in many countries, and proper management and disposal of huge volumes of copper mine tailings arising thereof is a huge challenge. Sungun mine is the biggest open-cast copper mine in the northwest of Iran. …

In offshore island and reef construction, abundant seawater and sea-sand resources are available. Then, the National Oceanic and Atmospheric Administration has recognized rich coral resources in tropical and subtropical waters spanning latitudes 30 S to 30 N. Coral clusters predominate in the Pacific Ocean (55 %), followed by the Indian Ocean (30 %), …

Mix design and characteristics evaluation of high-performance concrete with full aeolian sand based on the packing density theory. ... With the westward movement of highway construction in China and the gradual increase of restrictions on aggregate mining, high-quality construction materials are scarce in desertification areas, which …

Existing studies indicate that the material characteristics of sea sand significantly impact the performance of SWSSC and are a crucial factor in determining …

Characteristics of M-Sand as a Partial Replacement. with Fine Aggregate in Mix Design. Shreyas. Asst professor, Dept of Civil engineering, Don Bo sco Institute of Technology, Bangalore, India ...

prepare sand concrete instead of fine aggregate, and the results showed that the addition of iron tailings can produce high performance sand concrete; Ivan …

1. With the same particle gradation and stone powder contents, the particle shape of MS has little influence on the workability, strength and frost resistance of the MS concrete. 2. Mostly, the MS concrete has higher strength than RS concrete. However, when the gradation of MS is adjusted to be similar with RS, the strength of MS.

Introduction. The mining of sand and aggregate from submarine deposits is a substantial enterprise across the world. The material is excavated for three general …

Abstract. This work examines the mechanical properties of mining tailing sands in conventional concrete mixtures for structural applications. Mining is one of the most important factors for city development and, in some cases, represents the primary …

1. Introduction. At low latitudes, coral sand aggregates gradually replace ordinary river sand for construction projects due to its rougher surface texture, higher water absorption, lower density and fineness modulus [1]pared with aerated concrete (AC), coral sand concrete (CSC) has high compressive strength and good durability [2], due …