The proto-machine-made sand is a new artificial material for environmental protection with grain size smaller than 5 mm made of water cleaned crushed stones or gravels broken and separated by ...
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The invention discloses a machine-made sand self-compacting concrete. The concrete is made from the following components according to parts by weight: 100 parts of cement, 25-45 parts of fly ash, 0-30 parts of mineral powder, 0.8-1.5 parts of a polycarboxylic acid water reducing agent, 220-250 parts of machine-made sand, 130-150 parts of cobble and 130-150 parts of crushed stone.
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2011-12-18 As many differences with natural sand in particle shape, surface characteristics and grading, especially in larger content of stone powder, machine-made sand has the important effects on the workability of fresh concrete and the strength of hardened concrete. By reviewing the formerly experimental results of concrete with machine-made sand, this paper gives out the comprehensively
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The machine-made sand concrete has been widely used in building engineeringand its fracture characteristic is a research focus in the world. White light digital image analysis in frequency domain has the advantages of whole-field, non-contact measurement and the simple
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The proto-machine-made sand is a new artificial material for environmental protection with grain size smaller than 5 mm made of water cleaned crushed stones or gravels broken and separated by machines, in which the stone powder maintains as prototype and certain content by improving the production technology. The paper introduces a series of test results of grade C50 concrete mixed by proto ...
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2011-12-18 As many differences of machine-made sand from natural sand in particle shape, surface characteristics and particle size distribution (i.e. grading), especially in larger content of stone powder, it is important to realize what influences should be considered of machine-made sand on workability of fresh concrete. This paper firstly reviews the formerly experimental results of workability of ...
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Study on applicability of machine-made sand in concrete structures. Master's degree thesis of Chang'an University.2008(In Chinese) Mnuel Fernadez Canovas. High-Performance Concerte: Reqirements ...
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2018-4-13 The combination of sand, water, and cement make concrete. Each element performs a function essential to making the material long-lasting and incredibly sturdy. To put it simply, concrete is made from cement mixing with water to form a paste that
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Birnith is changing the way business is done. Birnith believes the value of brand, which originates from not only excellent products and solutions, but also considerate pre-sales after-sales technical services. So, we have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site ...
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The machine-made sand concrete has been widely used in building engineeringand its fracture characteristic is a research focus in the world. White light digital image analysis in frequency domain has the advantages of whole-field, non-contact measurement and the simple
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2021-7-6 Natural river sand is a non-renewable resource and is increasingly in short supply. As the country has stricter and stricter environmental protection requirements, restrictions on river sand mining in various places have become more stringent.
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Zhao, Y. Xu and C. Li: Study on workability of plastic fresh concrete with machine-made sand. Proceedings of the 2011 IEEE International Conference on Transportation and Mechanical Electrical Engineering, December, 16-18, 2011, TMEE2011, p.2013-(2016). DOI: 10.1109/tmee.2011.6199611
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2011-12-18 As many differences of machine-made sand from natural sand in particle shape, surface characteristics and particle size distribution (i.e. grading), especially in larger content of stone powder, it is important to realize what influences should be considered of machine-made sand on workability of fresh concrete. This paper firstly reviews the formerly experimental results of workability of ...
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2021-11-19 Influence of machine-made sand and gravel powder content on concrete performance. September.09,2021. The machine-made sand mainly refers to the rock, mine tailings or industrial waste particles with a particle size of less than 4.75mm made by mechanical crushing and sieving after soil removal treatment, and does not include soft and weathered particles.
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The design procedure for mix proportion of concrete with machine-made sand is suggested considering the reasonable content of water, sand ratio and stone powder in machine-made sand.
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2011-6-9 The paper introduces a series of test results of concrete in grade of C30 mixed with proto-machine-made sand. The contents of stone powder by mass of sand are 3 %, 7 % and 13 %, the cubic compressive strength were tested at ages of 3 d, 4 d, 7 d, 14 d, 28 d, 56 d, 90 d, 120 d, 150 d and 180 d.
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2012-4-26 The paper introduces a series of test results of concrete in grade of C30 mixed with proto-machine-made sand. The contents of stone powder by mass of sand are 3 %, 7 % and 13 %, the cubic compressive strength were tested at ages of 3 d, 4 d, 7 d, 14 d, 28 d, 56 d, 90 d, 120 d, 150 d and 180 d.
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2018-4-13 The combination of sand, water, and cement make concrete. Each element performs a function essential to making the material long-lasting and incredibly sturdy. To put it simply, concrete is made from cement mixing with water to form a paste that
Read More
Birnith is changing the way business is done. Birnith believes the value of brand, which originates from not only excellent products and solutions, but also considerate pre-sales after-sales technical services. So, we have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site ...
Read More
2021-7-6 Natural river sand is a non-renewable resource and is increasingly in short supply. As the country has stricter and stricter environmental protection requirements, restrictions on river sand mining in various places have become more stringent. Therefore, the use of machine-made sand instead of natural river sand has become an irreversible trend in the concrete industry.
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The machine-made sand concrete has been widely used in building engineeringand its fracture characteristic is a research focus in the world. White light digital image analysis in frequency domain has the advantages of whole-field, non-contact measurement and the simple
Read More
The machine-made sand concrete has been widely used in building engineering and its fracture characteristic is a research focus in the world. White light digital image analysis in frequency domain has the advantages of whole-field, non-contact measurement and the simple measuring system and can obtain displacements by frequency domination correlation...
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2012-4-26 The paper introduces a series of test results of concrete in grade of C30 mixed with proto-machine-made sand. The contents of stone powder by mass of sand are 3 %, 7 % and 13 %, the cubic compressive strength were tested at ages of 3 d, 4 d, 7 d, 14 d, 28 d, 56 d, 90 d, 120 d, 150 d and 180 d.
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2012-4-26 The paper introduces a series of test results of concrete in grade of C30 mixed with proto-machine-made sand. The contents of stone powder by mass of sand are 3 %, 7 % and 13 %, the cubic compressive strength were tested at ages of 3 d, 4 d, 7 d, 14 d, 28 d, 56 d, 90 d, 120 d, 150 d and 180 d.
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The contents of stone powder by mass of proto-machine-made sand were 3 %, 5 %, 7 %, 10 %, 13 % and 16 %. The drying shrinkage strain of concrete at the ages of 3 d, 7 d, 14 d, 28 d, 56 d, 90 d, 120 d, 150 d and 180 d were measured according to the standard method.
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Although the machine-made sand was widely used for concrete in recent years in China, it was short of studies on the relations among the basic mechanical properties of fly-ash concrete with machine-made sand (MSFAC). However, these relations such as the compressive strength, the tensile strength and the elastic modulus with the cubic ...
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2021-9-2 Artificial sand, also called crushed sand or mechanical sand (m sand), refers to rocks, mine tailings or industrial waste granules with a particle size of less than 4.75 mm. It is processed by mechanical crushing and sieving. In China, the artificial sand was mainly used in the construction of hydropower systems.
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2018-4-13 The combination of sand, water, and cement make concrete. Each element performs a function essential to making the material long-lasting and incredibly sturdy. To put it simply, concrete is made from cement mixing with water to form a paste that
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2021-7-30 Introduction. Sand and gravel are used extensively in construction. In the preparation of concrete, for each tonne of cement, the building industry needs about six to seven times more tonnes of sand and gravel (USGS, 2013b). Thus, the world’s use of aggregates for concrete can be estimated at 25.9 billion to 29.6 billion tonnes a year for 2012 alone.
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