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Online since: January 2009
Authors: Bei Xing Li, Ji Liang Wang, Ming Kai Zhou
Table 2 Workability and compressive strength of C60 concretes
Mixture
number Limestone
dust
content (%)
Mineral
admixture
amount
(%)
slump
(mm) Slump
flow
(mm)
Compressive
strength (MPa)
7d 28d
RS-1 0 0 210 420 69.2 81.9
RS-2 0 11.3 220 450 68.3 79.8
MS-1 3.5 0 220 550 63.7 74.3
MS-2 7 0 195 470 65.9 81.5
MS-3 10.5 0 210 480 68.0 84.3
MS-4 14 0 205 400 73.9 87.6
MS-5 3.5 FA 11.3 210 510 62.4 74.7
MS-6 7 FA 11.3 215 500 72.1 79.7
MS-7 10.5 FA 11.3 180 480 68.9 83.8
MS-8 14 FA 11.3 220 400 68.0 83.3
MS-9 3.5 GBFS 17 215 530 69.3 83.6
MS-10 7 GBFS 17 205 450 69.3 85.2
MS-11 10.5 GBFS 17 210 460 71.8 87.9
MS-12 14 GBFS 17 210 470 70.0 80.4
The results of compressive strength from Table 2 shows that most MS-HPCs show higher
compressive strength at 7 and 28 days than the RS-HPCs.
The reason for the addition of a limestone dust increasing compressive strength of MS-HPC are that: the limestone dust grains act as nucleation sites for CH and C-S-H reaction products at early hydration ages, and accelerate the hydration of clinker minerals, especially C3S [6], and carboaluminates are formed by the reaction between limestone dust and C3A [7], resulting in an improvement in early strength; the microfines can fill the voids among aggregate particles, and the improvement of fine-particle packing can increase the density of paste matrix and interfacial transition zone in hardened concrete [8].
Table 3 Elasticity modulus and drying shrinkage of C60 concretes Mixture number Elasticity modulus of 28-day (GPa) Drying shrinkage (×10-6) 1d 3d 7d 14d 28d 56d 90d 180d RS-1 48.6 78 118 177 272 364 458 486 500 RS-2 47.6 72 101 170 235 317 404 445 475 MS-1 49.1 69 102 215 282 333 423 485 498 MS-2 45.2 82 113 223 297 354 448 501 522 MS-3 47.3 95 125 203 273 337 417 480 490 MS-4 43.1 95 120 186 271 335 411 459 470 MS-5 45.5 63 85 203 271 319 409 468 496 MS-6 47.3 64 89 207 282 341 433 488 518 MS-9 44.5 74 118 229 299 347 436 491 516 MS-10 44.5 61 95 203 252 293 381 441 475 The effect of microfines content on the dry shrinkage of MS concrete is related with dry curing ages.
Table 5 Effect of clay content on workability and strength of C60 concretes Mixture number Clay content (%) Limestone dust content (%) MBV FA amount (%) Slump (mm) Slump flow (mm) Compressive strength (MPa) 7d 28d MS-13 0 7 1.35 11.3 220 550 58.6 71.2 MS-14 3 4 2.50 11.3 210 380 61.2 73.2 MS-15 5 2 4.50 11.3 90 - 63.3 74.4 In general, the presence of excessive quantities of clay is considered harmful to concrete.
Table 6 Effect of clay content on drying shrinkage of mortars Mixture number Clay content (%) Limestone dust content (%) Drying shrinkage (×10-6) 1d 3d 7d 28d 60d MS-13 0 7 189 493 594 610 639 MS-14 3 4 220 494 708 736 766 MS-15 5 2 255 511 725 754 787 Note: The mixture proportion for MS-13, MS-14 and MS-15 mortars is equal to each original concrete mixture, but deducting crushed stone.
The reason for the addition of a limestone dust increasing compressive strength of MS-HPC are that: the limestone dust grains act as nucleation sites for CH and C-S-H reaction products at early hydration ages, and accelerate the hydration of clinker minerals, especially C3S [6], and carboaluminates are formed by the reaction between limestone dust and C3A [7], resulting in an improvement in early strength; the microfines can fill the voids among aggregate particles, and the improvement of fine-particle packing can increase the density of paste matrix and interfacial transition zone in hardened concrete [8].
Table 3 Elasticity modulus and drying shrinkage of C60 concretes Mixture number Elasticity modulus of 28-day (GPa) Drying shrinkage (×10-6) 1d 3d 7d 14d 28d 56d 90d 180d RS-1 48.6 78 118 177 272 364 458 486 500 RS-2 47.6 72 101 170 235 317 404 445 475 MS-1 49.1 69 102 215 282 333 423 485 498 MS-2 45.2 82 113 223 297 354 448 501 522 MS-3 47.3 95 125 203 273 337 417 480 490 MS-4 43.1 95 120 186 271 335 411 459 470 MS-5 45.5 63 85 203 271 319 409 468 496 MS-6 47.3 64 89 207 282 341 433 488 518 MS-9 44.5 74 118 229 299 347 436 491 516 MS-10 44.5 61 95 203 252 293 381 441 475 The effect of microfines content on the dry shrinkage of MS concrete is related with dry curing ages.
Table 5 Effect of clay content on workability and strength of C60 concretes Mixture number Clay content (%) Limestone dust content (%) MBV FA amount (%) Slump (mm) Slump flow (mm) Compressive strength (MPa) 7d 28d MS-13 0 7 1.35 11.3 220 550 58.6 71.2 MS-14 3 4 2.50 11.3 210 380 61.2 73.2 MS-15 5 2 4.50 11.3 90 - 63.3 74.4 In general, the presence of excessive quantities of clay is considered harmful to concrete.
Table 6 Effect of clay content on drying shrinkage of mortars Mixture number Clay content (%) Limestone dust content (%) Drying shrinkage (×10-6) 1d 3d 7d 28d 60d MS-13 0 7 189 493 594 610 639 MS-14 3 4 220 494 708 736 766 MS-15 5 2 255 511 725 754 787 Note: The mixture proportion for MS-13, MS-14 and MS-15 mortars is equal to each original concrete mixture, but deducting crushed stone.
Online since: August 2014
Authors: Helena Hybská, Anna Ďuricová
Sample of wood charcoal was modified by crushing and sieving the fraction with a grain size below 2 mm.
Designation of samples in ecotoxicological text is not identical to the set and is as follows: number of sample weight ratio charcoal sludge 1 8 2 2 6 4 3 4 6 4 2 8 Simulation of natural mixing and homogenization of solid substances in each test sample was prepared such that each sample was added to 100 g of sample 100 ml of water.
Seeds in the number of 30 pieces were deployed in a Petri dish (diameter 140 mm) with inserted filter paper (pore size > 10 mm). 10 ml water extract prepared from the experimental samples was pipetted into a Petri dish.
Fig.3 Dependence% immobilization (EC) in % after 48 hours Tab.4 Basic statistical characteristics measured after 48 hours Sample Measurement number Average EC (%) Standard deviation EC (%) 1 4 10.00 5.77 2 4 5.00 5.00 3 4 0 0 4 4 0 0 sludge 4 0 0 charcoal 4 0 0 Conclusion Charcoal know people from time immemorial.
Waste water is treated during the technological process, the number of pollutants in water is significantly reduced, but undesirable constituents are concentrated in sewage sludge.
Designation of samples in ecotoxicological text is not identical to the set and is as follows: number of sample weight ratio charcoal sludge 1 8 2 2 6 4 3 4 6 4 2 8 Simulation of natural mixing and homogenization of solid substances in each test sample was prepared such that each sample was added to 100 g of sample 100 ml of water.
Seeds in the number of 30 pieces were deployed in a Petri dish (diameter 140 mm) with inserted filter paper (pore size > 10 mm). 10 ml water extract prepared from the experimental samples was pipetted into a Petri dish.
Fig.3 Dependence% immobilization (EC) in % after 48 hours Tab.4 Basic statistical characteristics measured after 48 hours Sample Measurement number Average EC (%) Standard deviation EC (%) 1 4 10.00 5.77 2 4 5.00 5.00 3 4 0 0 4 4 0 0 sludge 4 0 0 charcoal 4 0 0 Conclusion Charcoal know people from time immemorial.
Waste water is treated during the technological process, the number of pollutants in water is significantly reduced, but undesirable constituents are concentrated in sewage sludge.
Online since: January 2022
Authors: Sinem V. Kurudirek
This is due to the coordination of both ammonium hydroxide and PEI molecules to Zn+2, thus reducing the number of free Zn+2 ions in solution.
According to a coordinate number analysis of NZn-Zn/NZn-O, Liang et al. (2011) deduced that ZnO nanowires grown under normal hydrothermal growth conditions have a high number of Zn atoms in the structure (i.e., interstitial Zn, Zni) [33].
They also mentioned that when PEI and NH3 were added to the solution, a high number of O atoms were incorporated into the ZnO nanowires (i.e., interstitial O, Oi).
Kurudirek greatly appreciate TÜBİTAK for the grant through the number 1059B141300554.
Zhukov, T.Yao, Correlation between grain size and optical properties in zinc oxide thin films, Appl.
According to a coordinate number analysis of NZn-Zn/NZn-O, Liang et al. (2011) deduced that ZnO nanowires grown under normal hydrothermal growth conditions have a high number of Zn atoms in the structure (i.e., interstitial Zn, Zni) [33].
They also mentioned that when PEI and NH3 were added to the solution, a high number of O atoms were incorporated into the ZnO nanowires (i.e., interstitial O, Oi).
Kurudirek greatly appreciate TÜBİTAK for the grant through the number 1059B141300554.
Zhukov, T.Yao, Correlation between grain size and optical properties in zinc oxide thin films, Appl.
Online since: November 2022
Authors: Hamdy Mohamed Mohamed
According to TEM images, the grain size of TiO2 NPs ranged between 13.2 and 72 nm (Fig. 7a).
Furthermore, the grain size of ZnO NPs varied between 5.91 and 38.5 nm, according to TEM images (Fig. 7c).
The diffraction peaks located at 31.84°, 34.52°, 36.33°, and 47.63° have been keenly indexed as hexagonal wurtzite phase of ZnO with lattice constants with lattice constants 𝑎=𝑏=0.324 nm and 𝑐=0.521 nm (JPCDS card number: 36-1451) [43,44].
Furthermore, numbers above 6 reveal a substantial difference from the naked eye [49].
Furthermore, the grain size of ZnO NPs varied between 5.91 and 38.5 nm, according to TEM images (Fig. 7c).
The diffraction peaks located at 31.84°, 34.52°, 36.33°, and 47.63° have been keenly indexed as hexagonal wurtzite phase of ZnO with lattice constants with lattice constants 𝑎=𝑏=0.324 nm and 𝑐=0.521 nm (JPCDS card number: 36-1451) [43,44].
Furthermore, numbers above 6 reveal a substantial difference from the naked eye [49].
Online since: September 2008
Authors: Pentti O. Kettunen
The numbers are given as percentage of the dry solids of the
wood (after Stenius /1,7/).
In addition to the above classification on the basis of the number of C10H16-groups, terpenes and terpenoids are traditionally classified also on the basis of the number of rings in their structure.
Nominal fracture strength values of selected straight-grained small wood samples in the air-dry moisture content /1,17/.
Grain deviation Grain deviation changes the orientation of the cells in relation to the axial direction of the stem.
In an older tree, the grain deviation appears both as left- and right-handed.
In addition to the above classification on the basis of the number of C10H16-groups, terpenes and terpenoids are traditionally classified also on the basis of the number of rings in their structure.
Nominal fracture strength values of selected straight-grained small wood samples in the air-dry moisture content /1,17/.
Grain deviation Grain deviation changes the orientation of the cells in relation to the axial direction of the stem.
In an older tree, the grain deviation appears both as left- and right-handed.
Online since: June 2021
Authors: Jun Jie Yang, Ya Lei Wu, Si Chen Li, Man Wang
GBFS contains a large number of amorphous vitreous mineral phases, which have no crystal characteristic peaks except for the magnesia feldspar and the calcium siliceous feldspar.
FRIA contains a large number of crystalline mineral phases, potassium feldspar, anorthite, and orthoclase, with extremely high crystallinity.
There are a large number of scattered amorphous phase substances in GBFS, and the mineral phase system belongs to CaO-MgO-Al2O3-SiO2, which is a typical water-quenched slag.
Besides, a large number of glass beads with smooth surface morphology and excellent sphericity are distributed in FA, which composition is silicon-aluminum oxide.
Fig. 3 Grain size distribution of the marine soft soil Sample preparation.
FRIA contains a large number of crystalline mineral phases, potassium feldspar, anorthite, and orthoclase, with extremely high crystallinity.
There are a large number of scattered amorphous phase substances in GBFS, and the mineral phase system belongs to CaO-MgO-Al2O3-SiO2, which is a typical water-quenched slag.
Besides, a large number of glass beads with smooth surface morphology and excellent sphericity are distributed in FA, which composition is silicon-aluminum oxide.
Fig. 3 Grain size distribution of the marine soft soil Sample preparation.
Online since: May 2011
Authors: Yun Ting Lei, Shu Lin Yang, Jing Zhang, Bin Liu, Li Hu
With the development of molecular biology, transgenic technique and gene recombinant technique, various kinds of recombinant human or non-human collagens and gelatins have been produced in different expression systems, such as CHO cells [13], transgenic mice [14], insect cells [15, 16], silkworm [17], tobacco plants [18], corn grain[19], barley seeds [20], Escherichia.
Materials and methods Construction of pPIC9KG6 expression vector and Selection of multicopy P. pastoris transformants The codon-optimized recombinant human gelatin monomeric gene (Gel) was designed based on the mRNA sequence of human type III collagen α1 chain (Accession Number:X14420).The fragment named G1 was six copied into G6 and synthesised to the expression vector called pPIC9KG6.
Limited by the acid hydrolysis technique (During acid hydrolysis, Asn and Gln were transformed into Asp and Glu) and the resolution power of A200 amino acid autoanalyser, the results of amino acid analyses only present the numbers of six most amino acid composition, but it is enough to indicated that the amino acid composition of recombinant human gelatin is the same as the theoretical composition.
Composition and molecular weight of recombinant human gelatin and human collagen III (α1) Amino acid Recombinant human gelatin (detection value) Recombinant human gelatin (theoretical value) Human collagen III (α1) a Number Molar ratio Number Molar ratio Number Molar ratio Ala (A) NDb ND 6 1.00 91 8.32 Arg (R) ND ND 0 0 49 4.48 Asn (N) ND ND 72 12.02 25 2.28 Asp (D) 62 c 10.38 c 0 0 30 2.74 Cys (C) ND ND 0 0 3 0.27 Gln (Q) ND ND 96 16.03 28 2.56 Glu (E) 128 c 21.49 c 24 4.01 49 4.47 Gly (G) 236 39.41 201 33.56 378 34.55 His (H) ND ND 0 0 7 0.64 Ile (I) ND ND 0 0 17 1.55 Leu (L) ND ND 0 0 22 2.01 Lys (K) 15 2.44 18 3.01 40 3.66 Met (M) ND ND 0 0 9 0.82 Phe (F) ND ND 0 0 8 0.73 Pro (P) 123 20.44 134 22.37 255 23.31 Ser (S) 35 5.84 48 8.01 48 4.39 Thr (T) ND ND 0 0 16 1.46 Trp (W) ND ND 0 0 0 0 Tyr (Y) ND ND 0 0 5 0.46 Val (V) ND ND 0 0 14 1.28 Total 599 d 100 599 100 1094 100 Molecular weight (kDa) 55.0 d 55.0 97.8 a 103~1196 amino acid residues of full human type III collagen α1 chain
Monomer tandem repeating strategy could allow the construction of different recombinant human gelatin genes with diverse number of monomer, thus, to produce new collagens with the required molecular weight; 5.
Materials and methods Construction of pPIC9KG6 expression vector and Selection of multicopy P. pastoris transformants The codon-optimized recombinant human gelatin monomeric gene (Gel) was designed based on the mRNA sequence of human type III collagen α1 chain (Accession Number:X14420).The fragment named G1 was six copied into G6 and synthesised to the expression vector called pPIC9KG6.
Limited by the acid hydrolysis technique (During acid hydrolysis, Asn and Gln were transformed into Asp and Glu) and the resolution power of A200 amino acid autoanalyser, the results of amino acid analyses only present the numbers of six most amino acid composition, but it is enough to indicated that the amino acid composition of recombinant human gelatin is the same as the theoretical composition.
Composition and molecular weight of recombinant human gelatin and human collagen III (α1) Amino acid Recombinant human gelatin (detection value) Recombinant human gelatin (theoretical value) Human collagen III (α1) a Number Molar ratio Number Molar ratio Number Molar ratio Ala (A) NDb ND 6 1.00 91 8.32 Arg (R) ND ND 0 0 49 4.48 Asn (N) ND ND 72 12.02 25 2.28 Asp (D) 62 c 10.38 c 0 0 30 2.74 Cys (C) ND ND 0 0 3 0.27 Gln (Q) ND ND 96 16.03 28 2.56 Glu (E) 128 c 21.49 c 24 4.01 49 4.47 Gly (G) 236 39.41 201 33.56 378 34.55 His (H) ND ND 0 0 7 0.64 Ile (I) ND ND 0 0 17 1.55 Leu (L) ND ND 0 0 22 2.01 Lys (K) 15 2.44 18 3.01 40 3.66 Met (M) ND ND 0 0 9 0.82 Phe (F) ND ND 0 0 8 0.73 Pro (P) 123 20.44 134 22.37 255 23.31 Ser (S) 35 5.84 48 8.01 48 4.39 Thr (T) ND ND 0 0 16 1.46 Trp (W) ND ND 0 0 0 0 Tyr (Y) ND ND 0 0 5 0.46 Val (V) ND ND 0 0 14 1.28 Total 599 d 100 599 100 1094 100 Molecular weight (kDa) 55.0 d 55.0 97.8 a 103~1196 amino acid residues of full human type III collagen α1 chain
Monomer tandem repeating strategy could allow the construction of different recombinant human gelatin genes with diverse number of monomer, thus, to produce new collagens with the required molecular weight; 5.
Online since: December 2014
Authors: Ding Yi Yang, Hao Li, Han Yue, Li Jie Ge, Wen Hua Wang
As the fine-grained water quenching of nickel slag quenching mixing with concrete has potential activity and play a role of micro-filling effect, in order to turn solid waste into wealth and that resources can be secondary use, it was studied as concrete mineral admixture [7],[8],[9],[10]and[11].
Table 4 The test result of Reye’s determination of soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Distance of pointer before test(A)/mm Distance of pointer after test (B)/mm Range differences of pointer(B-A)/mm Standard of range difference of pointer (B-A)/mm result 1 538 225 225 133 10 11 1 <5 qualified 2 538 225 225 133 12 13.5 1.5 <5 qualified Table 5 The test result of autoclave expansion test determination soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Expansion rate/% result 1 538 400 400 205 0.2 qualified 2 538 400 400 205 0.1 qualified Table 4 and Table 5 show that, when the proportion of nickel slag powder is 50%, the soundness of nickel slag powder is up to standard.
Table 6 The activity index of nickel slag powder admixture which have different specific surface area numbers Specific surface area/(m2/kg) Flexural strength/MPa Compressive strength/MPa Activity index/% 3d 7d 28d 3d 7d 28d 3d 7d 28d 1 Calibrator sample 5.1 6.1 8.6 22.6 37.3 51.1 100 100 100 2 308 2.3 2.6 4.6 8.1 12.2 19.6 35.8 32.7 38.4 3 480 2.2 2.9 5.4 8.1 13.0 24.2 35.8 34.9 47.3 4 538 2.6 3.4 5.7 9.9 14.8 26.6 43.8 39.8 52.1 5 645 2.3 3.5 5.9 10.1 15.4 28.7 44.7 41.3 56.2 6 730 2.3 3.6 6.8 10.7 15.9 32.9 47.3 42.6 64.4 Table 6 show that, the activity index of nickel slag powder increased with the increase of specific surface area.
Table 7 Mixture ratio of concrete of per cubic meter numbers cement/kg Nickel slag powder/kg water/kg sand/kg stone/kg Water-bider ratio Sand ratio/% 1 404 0 190 715 1072 0.47 40 2 363.6 40.4 190 715 1072 0.47 40 3 323.2 80.8 190 715 1072 0.47 40 4 282.8 121.2 190 715 1072 0.47 40 Table 8 The strength of nickel slag powder concrete of different specific surface area and different amount of admixture numbers Specific surface area/(m2/kg) Ratio of replacing cement Compressive strength/MPa Ratio of compressive strength/% 3d 7d 28d 3d 7d 28d 0 -- 0.0 18.9 25.1 34.9 100.0 100.0 100.0 1 308.0 10% 15.6 22.1 32.6 82.4 88.3 93.4 20% 12.5 19.5 27.3 66.3 77.6 78.2 30% 11.1 17.4 25.3 58.8 69.3 72.5 2 480.0 10% 16.4 23.8 34.8 79.4 94.8 99.7 20% 14.4 21.5 33.7 65.3 85.7 96.6 30% 12.0 17.6 29.2 52.3 70.1 83.7 3 538.0 10% 17.0 24.7 34.9 78.9 98.4 100.0 20% 14.9 21.6 34.8 65.8 86.1 99.7 30% 12.5 19.5 33.7 55.3 77.7 96.6 4 645.0 10% 15.9
On the other hand, with the increase of specific surface area, when the specific surface area increased to 645m2/kg, there were also a large number of nickel slag powder particles not involved in filling and hydration though the powder can fill the gaps of cement slurry.
Table 4 The test result of Reye’s determination of soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Distance of pointer before test(A)/mm Distance of pointer after test (B)/mm Range differences of pointer(B-A)/mm Standard of range difference of pointer (B-A)/mm result 1 538 225 225 133 10 11 1 <5 qualified 2 538 225 225 133 12 13.5 1.5 <5 qualified Table 5 The test result of autoclave expansion test determination soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Expansion rate/% result 1 538 400 400 205 0.2 qualified 2 538 400 400 205 0.1 qualified Table 4 and Table 5 show that, when the proportion of nickel slag powder is 50%, the soundness of nickel slag powder is up to standard.
Table 6 The activity index of nickel slag powder admixture which have different specific surface area numbers Specific surface area/(m2/kg) Flexural strength/MPa Compressive strength/MPa Activity index/% 3d 7d 28d 3d 7d 28d 3d 7d 28d 1 Calibrator sample 5.1 6.1 8.6 22.6 37.3 51.1 100 100 100 2 308 2.3 2.6 4.6 8.1 12.2 19.6 35.8 32.7 38.4 3 480 2.2 2.9 5.4 8.1 13.0 24.2 35.8 34.9 47.3 4 538 2.6 3.4 5.7 9.9 14.8 26.6 43.8 39.8 52.1 5 645 2.3 3.5 5.9 10.1 15.4 28.7 44.7 41.3 56.2 6 730 2.3 3.6 6.8 10.7 15.9 32.9 47.3 42.6 64.4 Table 6 show that, the activity index of nickel slag powder increased with the increase of specific surface area.
Table 7 Mixture ratio of concrete of per cubic meter numbers cement/kg Nickel slag powder/kg water/kg sand/kg stone/kg Water-bider ratio Sand ratio/% 1 404 0 190 715 1072 0.47 40 2 363.6 40.4 190 715 1072 0.47 40 3 323.2 80.8 190 715 1072 0.47 40 4 282.8 121.2 190 715 1072 0.47 40 Table 8 The strength of nickel slag powder concrete of different specific surface area and different amount of admixture numbers Specific surface area/(m2/kg) Ratio of replacing cement Compressive strength/MPa Ratio of compressive strength/% 3d 7d 28d 3d 7d 28d 0 -- 0.0 18.9 25.1 34.9 100.0 100.0 100.0 1 308.0 10% 15.6 22.1 32.6 82.4 88.3 93.4 20% 12.5 19.5 27.3 66.3 77.6 78.2 30% 11.1 17.4 25.3 58.8 69.3 72.5 2 480.0 10% 16.4 23.8 34.8 79.4 94.8 99.7 20% 14.4 21.5 33.7 65.3 85.7 96.6 30% 12.0 17.6 29.2 52.3 70.1 83.7 3 538.0 10% 17.0 24.7 34.9 78.9 98.4 100.0 20% 14.9 21.6 34.8 65.8 86.1 99.7 30% 12.5 19.5 33.7 55.3 77.7 96.6 4 645.0 10% 15.9
On the other hand, with the increase of specific surface area, when the specific surface area increased to 645m2/kg, there were also a large number of nickel slag powder particles not involved in filling and hydration though the powder can fill the gaps of cement slurry.
Online since: October 2011
Authors: Bin Zhou, Dun Sheng Niu, Qi Wen Wang
A number of dedicated building services floors are located at various levels throughout the building height.
The number of columns on the east and west faces change from 13 to 7 via a belt transfer truss between levels F4-F5, in order to provide wider column spacing at entrance lobby level.
The analysis has shown that, under level 2 earthquake action, members do not yield except a small number of lintel beams of shear walls.
However, a small number of transfer truss members enter into plastic stage with slight plastic strain.
Based on the yielding check analysis under level 2 earthquake action, members do not yield except a small number of linking beams of shear walls.
The number of columns on the east and west faces change from 13 to 7 via a belt transfer truss between levels F4-F5, in order to provide wider column spacing at entrance lobby level.
The analysis has shown that, under level 2 earthquake action, members do not yield except a small number of lintel beams of shear walls.
However, a small number of transfer truss members enter into plastic stage with slight plastic strain.
Based on the yielding check analysis under level 2 earthquake action, members do not yield except a small number of linking beams of shear walls.
Online since: October 2022
Authors: Ariunbolor Purvee, Gunther C. Stehr, Dulguun Narmandakh, Battsengel Baatar
Before setting parts to work, each blade was numbered C1-C3 according to the different powder system, and the uncoated blade was numbered UC (uncoated), as shown in Fig. 1.
Image of the worn impeller after 456 h First, the highly worn side is numbered in order, in a single direction.
Each numbered point has 10 lines with the same fixed distance to the total width of the blade.
On the opposite end of each line, as shown in Fig. 5, only three points are numbered from 1 to 3 in the same direction, as on the left (inner part).
Comparison between powder systems, which are differentiated from each other in terms of hardness and grain size, supported our experiment to gain greater performance.
Image of the worn impeller after 456 h First, the highly worn side is numbered in order, in a single direction.
Each numbered point has 10 lines with the same fixed distance to the total width of the blade.
On the opposite end of each line, as shown in Fig. 5, only three points are numbered from 1 to 3 in the same direction, as on the left (inner part).
Comparison between powder systems, which are differentiated from each other in terms of hardness and grain size, supported our experiment to gain greater performance.