Effect of fine aggregate on fluidity and mechanical properties of wet shotcrete
Source abstract
Abstract
Air-entrained wet shotcrete improves the pipeline transportation efficiency of concrete. The characteristics of the fine aggregate in the mix have different effects on the fluidity and mechanical properties of air-entrained wet shotcrete. The effects of four different properties of fine aggregates (mud content, sand ratio, water content and particle size) on the fluidity and mechanical properties of air-entrained wet shotcrete were studied, with particular attention paid to the sand ratio and mud content. The fluidity and mechanical properties of wet shotcrete were optimum when the sand ratio of the fine aggregate was 0.56 and the water content was 3%. The fine aggregate should have a reasonable particle size as far as possible. Montmorillonite in the mud inhibited the fluidity and mechanical properties, so mud content should be kept as low as possible. The results of this work provide a reference for the practical application of air-entrained wet shotcrete, so as to better deal with pipe blockage.
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Research context
OpenAlex topics: Innovative concrete reinforcement materials · Concrete Properties and Behavior · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Professor, College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, China
Post-graduate student, College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
Associate Professor, College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, China (corresponding author: lgmrenqing@163.com, skd995978@sdust.edu.cn)
References (53)
Show source-provided references
1. Effect of admixtures and supplementary cementitious material on mechanical properties and durability of concrete10.1002/cend.201900016 ↗
2. Effect of polymer fibers recycled from waste tires on properties of wet-sprayed concrete10.1016/j.conbuildmat.2018.04.229 ↗
3. Pipe flow of pumping wet shotcrete based on lubrication layer10.1186/s40064-016-2633-3 ↗
4. Development of cement dust suppression technology during shotcrete in mine of China-a review10.1016/j.jlp.2018.07.001 ↗
5. Flow characteristics of pneumatic conveying of stiff shotcrete based on CFD-DEM method10.1016/j.powtec.2022.117109 ↗
6. An experimental research on the fluidity and mechanical properties of high-strength lightweight self-compacting concrete10.1016/j.cemconres.2004.11.003 ↗
7. Effect of sand, fly ash, and coarse aggregate gradation on preplaced aggregate concrete studied through factorial design10.1016/j.conbuildmat.2015.05.086 ↗
8. Multifactorial experimental analysis of concrete compressive strength as a function of time and water-to-cement ratio10.1016/j.prostr.2018.09.020 ↗
9. Montmorillonite and phosphorus enrichment in sediments as the causative factor for mud bank formation along the southwest coast of India10.1016/j.rsma.2020.101517 ↗
10. Experimental study on the influence of water content on compressive strength of concrete
11. Experimental investigation of the compressive strength of normal-strength air-entrained concrete at high temperatures10.1016/j.conbuildmat.2020.118662 ↗
12. Research on mechanism of rock burst induced by multi-factor coupling in isolated coal body
13. The rheological properties of self-compacting concrete containing superplasticizer and air-entraining agent10.1016/j.conbuildmat.2018.01.169 ↗
14. The influence of free water content on ballistic performances of concrete targets10.1016/j.ijimpeng.2020.103530 ↗
15. GB175 ‘General purpose silicate cement’ mandatory national standards
16. Effects of air-entraining agents and Welan gum on rheological properties of fresh cement mortar
17. Experimental study on deformation field and energy evolution characteristics of rock-coal composite samples
18. Combined effects of water film, paste film and mortar film thicknesses on fresh properties of concrete10.1016/j.conbuildmat.2013.10.014 ↗
19. Influence of paste/mortar rheology on the flow characteristics of high-volume fly ash self-consolidating concrete10.1680/macr.2007.59.7.517 ↗
20. Rheological behavior and compressive strength of concrete made with recycled fine aggregate of different size range10.1016/j.conbuildmat.2020.121172 ↗
21. Development of a new type of green switch air entraining agent for wet-mix shotcrete and its engineering application10.1155/2016/6981091 ↗
22. Investigating and optimizing the mix proportion of pumping wet-mix shotcrete with polypropylene fiber10.1016/j.conbuildmat.2017.05.169 ↗
23. Rheological properties of fresh concrete and its application on shotcrete10.1016/j.conbuildmat.2020.118180 ↗
24. Experimental study of the influence of EPS particle size on the mechanical properties of EPS lightweight concrete10.1016/j.conbuildmat.2014.06.062 ↗
25. Influence of free water on concrete triaxial behavior: the effect of porosity10.1016/j.cemconres.2019.03.010 ↗
26. Ministry of Construction of the PRC · 2006
27. Water resistance and corrosion protection properties of waterborne polyurethane coating enhanced by montmorillonite modified with Ce3+10.1016/j.porgcoat.2019.105213 ↗
28. Mohurd (Ministry of Housing and Urban-Rural Development) · 2016
29. Effects of coarse aggregate coatings on concrete performance10.1061/(ASCE)0899-1561(2010)22:1(96) ↗
30. Ladle slag characteristics and use in mortar and concrete: a comprehensive review10.1016/j.jclepro.2020.125584 ↗
31. Compressing fresh concrete technique and the effect of excess water content on physical – mechanical properties of compressed concrete10.1016/j.matdes.2011.12.051 ↗
32. Rheology of mortar and its influences on performance of self-consolidating concrete
33. Influence of natural coarse aggregate size, mineralogy and water content on the permeability of structural concrete10.1016/j.conbuildmat.2008.04.009 ↗
34. Air entrainment in fresh concrete and its effects on hardened concrete – a review10.1016/j.conbuildmat.2020.121835 ↗
35. Bond of FRP bars in air-entrained concrete: experimental and statistical study10.1016/j.conbuildmat.2021.124193 ↗
36. Effects of recycled CRT glass fine aggregate size and content on mechanical and damping properties of concrete10.1016/j.conbuildmat.2019.01.033 ↗
37. Standards Administration of China (SAC) · 2003
38. SAC · 2015
39. SAC · 2017
40. Effect of sand ratio on the elastic modulus of self-compacting concrete10.51400/2709-6998.2295 ↗
41. Influence of coarse aggregate shape on optimum fine to total aggregate ratio using a virtual voids-ratio diagram in concrete compaction10.1016/j.cemconcomp.2019.103463 ↗
42. Partial replacement of fine aggregate by steel slag and coarse aggregate by walnut shell in concrete
43. Effect of methylene blue (MB)-value of manufactured sand on the durability of concretes10.1007/s11595-012-0622-0 ↗
44. Study on technology of long distance pipeline transportation of mine wet shotcrete
45. Influence of air-entraining agent on rheological properties of mortar
46. Influence of mix proportions on rheological properties, air content of wet shotcrete—a case study10.3390/app11083550 ↗
47. Application of accelerator in wet shotcrete construction method
48. Experimental study on shear resistance of bolt connector in steel-concrete composite beam
49. Mix proportion for highly fluidized concrete with Welan-gum as viscosity modifying agent and application to actual construction works10.2208/jscej.1998.588_125 ↗
50. New approach to calculate water film thickness and the correlation to the rheology of mortar and concrete containing reactive MgO10.1016/j.conbuildmat.2017.05.218 ↗
51. Correlation between the mechanical properties and the fiber breaking morphology of fiber reinforced shotcrete (FRS)10.1016/j.compstruct.2021.114641 ↗
52. Effect of vibratory mixing on the slump, compressive strength, and density of concrete with the different mix proportions10.1016/j.jmrt.2021.10.033 ↗
53. Research on dual process of wet shotcrete and mix proportion in mine