آخرین محصولات

Orthogonal Experimental Study on Concrete Properties …

quality variation of machine-made sand of different lithologies on performance. Therefore, in this study, the research on machine-made tuff sand concrete is carried out through the following aspects. Firstly, the factors influencing the high-performance machine-made sand concrete mix ratio are analyzed. These factors to be optimized are used

Experimental Study on the Properties of Mortar and Concrete Made …

Machine-made sand is gradually replacing natural sand to achieve sustainable development. Experimental studies and gray-correlation analysis were used to study the properties of tunnel slag machine-made mortar and concrete. The properties of machine-made mortar with different stone powder content were analyzed through …

Engineering benefits of replacing natural sand with manufactured sand

Sands. Sieve analysis was carried out on natural river sand and manufactured sand, as per ASTM C136 (2014). Based on the particle size distribution shown in Fig. 3, the river sand and Msand, in ...

Comparison of physical and mechanical …

This study compared the physical and mechanical properties of river sand concrete with quarry dust concrete. The constituent materials were batched by weight.

Research on Compressive Strength of Manufactured Sand …

Natural sand is a fundamental component of concrete, and with the increase in concrete consumption, more and more river sand is being mined. The …

EVALUATION OF THE POTENTIAL OF SEA SAND AS AN ALTERNATIVE TO RIVER SAND

types, mixed sea sand and river sand (1:1) compared to river sand and quarry dust. Crushing strength vs grain size of the different fine agg regates. Journal of Geologica l Society of Sri Lanka ...

Research on Compressive Strength of Manufactured Sand Concrete …

Traditional natural river sand is used as a fine aggregate for concrete, but due to the severe environmental situation in recent years, many places have asked for a ban or restriction on the extraction of river sand. This has resulted in an increasing demand for concrete using machine-made sand instead of natural sand. The estimation and …

A optimum prediction model of chloride ion diffusion …

A optimum prediction model of chloride ion diffusion coefficient of machine-made sand concrete based on different machine learning methods ... has reached 91%, and the penetration rate is still rising. Compared with natural sand, ... mechanism of dredged sand in the lower reaches of the Yangtze River and manufactured sand …

Engineering benefits of replacing natural sand with …

In the context of depleting natural sand resources, the present study explores the feasibility of replacing natural sand with manufactured sand (Msand) in …

M Sand (Manufactured Sand)

Overall, M Sand is 30% cheaper than the river sand. Eco-friendly: Use of M Sand in replacing with river sand avoids environmental disasters like groundwater depletion, water scarcity, a threat to natural life etc. Growing concern for environmental protection, M Sand is the best alternative to the river sand. Advantages of …

Effect of total substitution of crushed limestone sand on concrete …

Yusuf and Olawumi (2015) make a similar study on strength properties of concrete made with river sand and dune sand as fine aggregate. Many authors studied the optimal percentage of partial ...

Experimental Study on River Sand Replacement in Concrete

With the basic continuous improvement of China's infrastructure, the demand for concrete is increasing day by day. Sand is an important component of concrete, its characteristics have an ...

Experimental Study on River Sand Replacement in …

Sand is an important component of concrete, its characteristics have an important influence on various properties of concrete. In recent years, ... River sand(10%) and machine-made sand(90%); superfine Yangtze River sand(20%) and ... further compared. Tab.3 Concrete proportioning data and requirements Strength grade C30 T(mm) …

Multi-scale creep analysis of river sand and manufactured sand concrete …

With the depletion and increasing demand of river sand, machine-made sand could be used more and more in concrete. ... is discussed and compared with concrete mixed with common solid waste ...

REPLACEMENT OF NATURAL SAND WITH …

days is 8.10% & 1.52% compared to Fully MSand based concrete. split tensile strength percentage decreases on Fully M-Sand and 50% M-Sand + 50% Sea sand respectively at 28 days is 13.33% & 9.47% compared to Fully Sea sand based concrete. Flexural strength test results percentage observed increasing on Fully Sea sand

COMPARATIVE ANALYSIS OF RIVER SAND, M-SAND …

by the concrete with river sand, M-Sand and Quarry Dust Sand. Fig.4.1 True Slump Fig.4.2 Shear Slump Fig.4.3 Collapse Slump 4.2 COMPRESSIVE STRENGTH At the beginning, i.e. at 7 days the concrete's strength made of manufactured sand and quarry sand is less than that of common sand. But as the days of curing

Influence of Machine-Made Sand Performance …

This paper studied the influence of various performance indexes of machine-made sand on concrete work performance and admixture adaptability. The experimental results show: The value of …

The Applications of Manufactured Sand in Concrete Production

And the best m-sand fineness modulus is 2.6-3.0, and the gradation zone is 2. When artificial sand is used in concrete that should add some admixtures, it is more sensitive to admixtures than natural sand. The high-strength pumping concrete made of machine-made sand is not easy to block during the pumping process.

Difference Between M Sand Vs River Sand | What is M

M-Sand(Manufactured Sand) as a silt content of around 0.2 percent and water absorption of 1.6 percent, as compared to 0.45 percent and 1.15 percent respectively in river sand. This sand alternative of river sand/natural sand. M-sand(Manufactured Sand) cheaper sand as per river sand. Also, read: What Is Bulkage of Sand (Fine Aggregate ) M-Sand …

River Sand Characterization for Its Use in Concrete A Revue

River sand is a common construction material, but not all river sands are suitable for use in concrete. The characteristics of river sand can vary greatly depending on its origin, and certain properties need to be considered before using it in concrete. ... examined the compressive strength of concrete made with river sand compared to concrete ...

River Sand Characterization for Its Use in Concrete: A Revue

River sand, in particul ar, is a common source of sand for concrete pr oduction, and it is widely used as a construction material. According to industry …

Waste Foundry Sand in Concrete Production Instead of Natural River Sand

The highest density is achieved at 0% replacements of WFS while the minimum density was achieved at 50% replacement of WFS. 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 and porous.

Study on mechanical properties and corrosion damage …

The erosion depth in mixed sand concrete has a growth rate that is 0.027 mm/d lower compared to ordinary river sand concrete under erosion conditions. ... Prior studies have mostly concentrated on the performance discrepancies between wind-blown sand concrete and machine-made sand concrete. However, there is a scarcity of published literature ...

Why River Sand is Used for Construction: Comprehensive …

Key Characteristics of River Sand 1. Optimal Particle Size Distribution. River sand is renowned for its optimal particle size distribution, which is crucial for producing high-quality concrete and mortar.. Uniform Granulation: The grains of river sand are …

Types of Sand in Construction: A Comprehensive Guide

River sand's natural composition makes it an ideal choice for achieving aesthetic appeal in construction projects. Concrete sand 2.2. Concrete Sand: Essential for Structural Integrity. Concrete sand, a coarser sand variety, is pivotal in construction for creating strong and durable concrete structures.

(PDF) Effect of Using River Sand on The Strength of

The experimental test results have revealed that it is possible to obtain a normal and high strength concrete with acceptable compressive and flexural strengths values by using river sand with ...

Effect of Stone Powder Content on Mechanical …

Machine-made sand: self-produced high-quality machine-made sand was produced by the parent rock of Pingkan tun - nel excavation. The compressive strength of the parent rock was 102 MPa, the apparent density was 2723 kg/m 3, and the moisture content was 0.6%. The crushing index of machine-made sand was 18%, the methylene blue value was 0.5 g/

Types of Sand: Uses, Properties, Grain size & Classification.

Therefore it is avoided for concrete structure and engineering techniques. Related: 19 Types of cement – Properties and Uses in Construction. Manufactured Sand: Created by crushing hard granite stones, manufactured sand refers to an artificially created type of sand made as an alternative to river sand for construction.

Application status and problems of machine-made sand …

Corresponding author e-mail: lianghua_he@qq Application status and problems of machine-made sand in Highway Engineering WU Songhua1, WANG Xiangzhen1, HE Lianghua1, KONG Yandong1, HE Yuliang2 1Shaoxing Traffic Engineering Quality and Safety Supervision Station, Zhejiang Shaoxing 312000, China; 2College of Civil …

Grey model study on strength and pore structure of self …

The mechanical properties of machine-made sand concrete are better than those of river sand concrete, mainly due to the rough surface of machine-made sand and the characteristics of stone powder; the mechanical properties of gravel concrete are better than those of shale ceramsite concrete, mainly because the strength of gravel is …