6 Tips to Produce High-quality Machine-made Sand
For mixing ordinary concrete, machine-made sand with crushing index value below 30% should be used. The production control measures are mainly to select the rock with high compressive strength of parent rock and good rock mass …
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/
Research on frost resistance of desert sand + machine-made …
Through SEM analysis, it is found that desert sand can effectively fill the internal pores and fissures of concrete, and limestone machine-made sand contains 5 % stone powder, …
Experimental study on tensile strength development of …
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 …
Key Issues in Properties and Application of Machine-Made Sand …
Based on studying properties of materials for self-compacting concrete with machine-made sand, it analyzed current application of self-compacting concrete in China. Meanwhile, key issues in self-compacting concrete with sand-made sand, such as content of rock powder, principles of mixing proportion, quality of machine-made sand, construction management, scientific research, …
Study on mechanical properties and corrosion damage …
In their study, Huang ong et al. [12] determined that the ideal replacement rate for machine-made sand in concrete, in order to achieve excellent mechanical performance, is 50 %. In their study, Gao Yuxin [13] discovered that the water absorption rate of machine-made sand, after undergoing surface modification, reduced by 42.3 % ...
Orthogonal Experimental Study on Concrete Properties …
machine-made sand concrete mix ratio are analyzed. These factors to be optimized are used. Materials 2022, 15, 3516 3 of 18 as influencingfactors for orthogonaltests. The test results are analyzedto find the optimum level of concrete performance under each influencing factor. The optimal machine-made
Experimental study on mechanical properties of concrete …
Precast elements made from high performance concrete have the same improved qualities as the originals. Filler and chemical admixtures are common components of high-performance concrete. ... Experimental investigation on mechanical property and microstructure of ultra-high-performance concrete with ceramsite sand. Struct. Concr., 23 (4) (2022 ...
Research on Rebound Strength Measurement Curve of …
In order to investigate the influence of carbonation treatment on the rebound strength measurement curve of machine-made sand concrete, this study conducted research on the carbonation mechanism sand concrete rebound strength measurement curve through rebound and compressive strength tests using carbonation degree and concrete strength grade as …
Research on Rebound Strength Measurement Curve of …
In order to investigate the influence of carbonation treatment on the rebound strength measurement curve of machine-made sand concrete, this study conducted research on the carbonation mechanism sand concrete rebound strength measurement curve through rebound and compressive strength tests using carbonation degree and concrete strength grade as ...
Effect of stone powder content on the mechanical properties …
The content of TSP in machine-made sand are 0%, 4%, 8%, and 12%, respectively. In order to compare the performance with concrete mixed with river sand, a reference group of HC is set. Due to the irregular shapes, rough surfaces, and high TSP of machine-made sand, it may lead to poor workability of concrete.
Influence of Engineering Properties of Machine-Made Sand on Concrete
Keywords: Machine-made sand, parent rock lithology, particle gradation, particle shape, stone powder content, concrete performance How to Cite Zhu, WenTao. 2024.
Experimental investigation on mechanical properties of concrete with M-sand
The comparison was also made for M sand concrete and traditional concrete. Applying glass powder and other fibers to self-compacting concrete improved, reduces cracks and offers high strength, and improves workability of concrete [10]. Ramkumar et al., the curve in regression supports the use of processed sand over river sand which may help in ...
Machine-made sand self-compacting concrete
The invention relates to a machine-made sand self-compacting concrete, which consists of cement, mineral powder, fly ash, machine-made sand, broken stone, an additive and water, wherein the using amounts of the components of the concrete are as follows according to a single formula: 435kg/m cement 3 87kg/m of mineral powder 3 58kg/m of fly ash 3 Machine-made …
Experimental Study on the Properties of Mortar and Concrete Made …
Machine-made sand concrete with different fineness modulus and stone powder content was prepared. The fineness modulus of river sand and machine-made sand was taken from 2.4 to 3.0, adjusted by 0.1 for each level. In addition, the stone powder content was taken from 0 to 10%, adjusted by 2% for each level. ...
Effects of Polypropylene Fibers on the Frost Resistance of Natural Sand
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 ...
Experimental Study on Freeze-Thaw Resistance of Concrete …
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 ...
Dataset of tensile strength development of concrete with manufactured sand
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 evaluate the precision of …
Analysis on Research Status of Road Performance of Machine-made Sand …
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 properties and dry shrinkage …
[PDF] Mechanical Properties and Micromorphology of …
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 mechanical properties and frost resistance of mixed sand concrete. Concrete samples with different calcium oxide contents (0%, 6%, 8%, and 10%) were ...
Research on Construction Method of Self-Compacting Concrete …
Machine-made sand self-compacting concrete is a kind of self compacting concrete with machine-made sand as fine aggregate, which could fill formwork only by its own gravity, without concrete vibration. It is different from ordinary concrete in many aspects, such as fluidity, workability, and configuration method [1]. As a new type of concrete ...
Effects of Polypropylene Fibers on the Frost Resistance of Natural Sand
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-impregnated natural sand …
Influence of Machine-Made Sand Performance on …
The experimental results show: The value of machine-made sand has obvious negative effects on concrete performance and admixtures. The rock-powder content and the fineness module have...
Several Misunderstandings Of Machine-made Sand To Prepare Concrete?
Several Misunderstandings Of Machine-made Sand To Prepare Concrete? - Oct 01, 2022-1 Characteristics of machine-made sand. According to GB/T 14684-2011 "Sand for Construction", artificial sand (artificial sand) does not include soft and weathered particles, but refers to the particle size not exceeding 4.75mm, which has undergone soil removal treatment, mechanical …
How to Sand Concrete
Sand the concrete surface up to 1/4 inch for this look. How to Sand Concrete. When sanding concrete, choose between wet sanding and dry sanding. Wet sanding creates less dust and reduces wear on pads but takes longer. Dry sanding is faster but creates more dust. When dry sanding, consider sanders that have built-in vacuums to reduce dust.
Experimental Study on the Properties of Mortar …
The test results showed that the flexural and compressive strengths of the machine-made sand concrete were greater than the standard sand with the same stone powder content. The 28-day flexural ...
Several Misunderstandings Of Machine-made Sand To …
If the proportion of concrete is designed according to the law of natural sand, the water demand of machine-made sand is large, and the workability is relatively poor, and it is easy to produce …
Research on the influence of machine-made sand gradation …
[1] Zhu J.L., Lang X.G. and Jia X.E. 2001 Production status and development of machine-made sand[J] Mining and Metallurgy 38-42 Google Scholar [2] Qiu H.Q. 2015 The influence of machine-made sand particle shape and stone powder content on concrete performance[D] (Shenzhen University) Google Scholar [3] Ai C.F., Peng H. and Hu C. 2013 …
Orthogonal Experimental Study on Concrete Properties of Machine-Made …
The mechanical and working properties of the machine-made sand concrete reach the optimum condition when the mineral admixture is 20%, the sand rate is 46%, the stone powder content is 10% and the ...
(PDF) Mechanical Properties and Micromorphology of …
machine-made sand concrete. 2. Materials and Test Methods. 2.1. Materials. 2.1. 1. Cement. e cement used is P.O. 42.5 Portland ce-ment. e chemical composition is shown in T able 1.