With the lack of natural sand and stone resources, machine-made sand will be widely used in the building materials industry. By adjusting the proportion of machine-made sand and river sand, the ...
At present, machine-made sand has become the mainstream material in the construction industry. Therefore, it is necessary to carry out relevant research on MSC. According to the sixth assessment report of the Intergovernmental Panel on Climate Change (IPCC) of the Intergovernmental Panel on Climate Change (hereinafter referred …
Machine-made sand instead of natural sand has become an inevitable choice for the sustainable development of the concrete industry. Orthogonal experiment and grey correlation analysis were used to investigate the performance of machine-made tuff sand concrete. The optimal concrete mix ratio of machine-made sand was obtained by …
Amount of each raw material for the test of machine-made sand concrete (kg/m 3). T est. Number Cement Mineral. Admixture. Machine-Made. Sand Stone Water Additive/% 1 471 52 779 975 157 1.5.
2.2 The 'Heads in the Sand' Objection. If there were thinking machines, then various consequences would follow. ... One of the most popular objections to the claim that there can be thinking machines is suggested by a remark made by Lady Lovelace in her memoir on Babbage's Analytical Engine: ... 2014, "There can be no Turing-Test ...
Using machine|made sand, the author successfully prepared ultra|retardation high performance concret with good working capability, which can retard over 24 hours and has achieved good results in engineering application. ... {Jing2001TestRA, title={Test Research and Project Application of Machine-made Sand Ultra-retardation High Performance ...
The optimal concrete mix ratio of machine-made sand was obtained by orthogonal test and its working performance was verified. Grey correlation analysis …
This paper takes mixed sand (machine-made sand + river sand) concrete as the research object and analyzes the influence mechanism of different content of CaO expansion agent on the physical and ...
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
Wanmao Zhang. yu Tang. Central South University. Yinghua Jian. Show all 5 authors. Citations (7) References (44) Figures (11) Abstract and Figures. Machine …
This article presents 755 groups splitting tensile strength tests data of concrete with manufactured sand (MSC) in different curing age ranged from 1 day to 388 days related to the research article "Experimental study on tensile strength development of concrete with manufactured sand" (Zhao et al., 2017) [1].These data were used to …
The optimal machine-made sand concrete ratio is obtained, and the performance of concrete under the optimal ratio is verified. We used the grey correlation …
Test of mortar strength of machine-made sand. Machine-made sand concrete mixes with equal amount of cement replaced by stone powder were used to study the effect of stone powder replacement of …
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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 ...
As the non-destructive testing of concrete strength, the rebound test usually be used to measure the strength of the concrete surface[5]. However, for machine-made sand self-compacting concrete, there are ... machine-made sand should be considered, and the corresponding pouring plan should be specified in combination with the actual …
In order to analyze the application status of machine-made sand in concrete pavement structure, and discuss new ideas for the development of machine-made sand concrete pavement, researches on several key issues of machine-made sand concrete pavement were reviewed and summarized, including wear resistance, mechanical …
Aggregate micro fines (AMF) were usually included in the machine-made sand during the stone breaking process. Different AMF contents could be included in different batchs of machine-made sand, and thus causing different concrete properties, like the volume stability. In order to explore the influence of AMF contents in machine-made …
The basic performance indexes of the mechanism sand, cement and fly axsh used in the test are shown in Table 4, Table 5, Table 6. Prepare the required test blocks according to the experimental plan and place them in the curing room for standard curing for 28 days. ... Prediction analysis of factors influencing CIDC of machine-made …
The uniformity, consistency, and purity of Ottawa material and sand make it a preferred choice in various applications. This specially graded natural silica sand is utilized in cube testing to ascertain the …
The replacing products especially the machine-made sand successively occupied the sand markets [1]. However, as the design codes for concrete structures were made on the basis of ordinary concrete ...
The results indicate that the proportion of machine-made sand is 40% in C30 concrete, which makes the concrete show the best performance and the maximum …
In order to study the effect of polypropylene fibers on the frost resistance of natural sand and machine-made sand concrete, polypropylene fibers (PPF) of different volumes and lengths were mixed ...
Based on test results, the drying shrinkage of concrete affected by the contents of stone powder in proto-machine-made sand is analyzed and compared with that of similar test of concrete with ...
The fine aggregate for the test is the machine-made sand obtained by artificial crushing of the parent rock. The content of particles less than 75 m in the
Geomembrane–sand interface shear strength parameters were measured using inclined board and standard size direct shear box tests. Ottawa sand with well-rounded particles and a crushed stone with ...
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 ...
2. Machine-made sand production equipment and process. Process flow of machine-made sand production: The basic production process can generally be divided into the following stages: ore lumps → coarse …
linear relationship between the value of machine-made sand and the stone powder content. It can be seen from Table 2-5 that the selected machine-made sand has high calcium oxide content, all exceeding 40%, and the highest content is 51.43%. The silica content is the second, indicating that the machine-made sand is a calcium oxide rock.
Hence investigations had look for an alternate material such as manufactured sand made from crushed rock as a substitute to river sand. ... The mix proportions are arrived after testing of several mixes designed as per guidelines of IS10262-2009 [14] for grades of M65 and M30 with the water to cement ratio as 0.3 and 0.45 taken respectively ...
Sand testing falls into two categories: checking consistency and evaluating physical and chemical properties of a sand mix. Tests such as moisture, permeability, green compression and ... A standard 2 x 2-in. specimen is made and dried in a ventilated oven at 230F (110C) for 2 hr. After cooling, it is broken, and the strength is recorded. ...
In order to study the effect of polypropylene fibers on the frost resistance of natural sand and machine-made sand concrete, polypropylene fibers (PPF) of different volumes and lengths were mixed into natural sand and machine-made sand concrete, respectively. The freeze–thaw cycle test was carried out on polypropylene-fiber …
Manufactured sand crushed from stone or gravel, also known as machine-made sand, artificial sand or crushed-stone sand, has been used as a substitute of natural sand in concrete [1], [2], [3]. This is also becoming a global trend to produce concrete by using manufactured sand in the safeguarding of limited natural sand resources [4], [5], …
Essential tests for assessing test sand quality include silt content examination, grading analysis, detection of harmful impurities and bulking test. Different types of fine aggregate have varying effects on the properties of concrete and …
The cumulative screening rate and fineness modulus of machine-made sand have a good correlation with the yield stress of the mortar, and the mechanism is 1.18-0.6mm Sand gradation is significantly ...
