结构工程专业英语
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• A micrograph obtained for the UtSCBA (Fig. 2b) shows a large variability of shapes and sizes of the particles, ranging from 10 to 200 lm,
ApplΒιβλιοθήκη Baiducation of the new building materials
Introduction of the paper titile
Paper title :Mechanical and durability properties of mortars prepared with untreated sugarcane bagasse ash and untreated fly ash.
Key words: Mechanical (力学) durability（耐久性） property(性能) sugarcane bagasse ash（甘蔗灰）SCBA fly ash(粉煤灰)FA
Why these materials can be used in cocretes?
• Research on FA(Fly ash) shows that its presence improves the workability of mortars and concretes .
• Key words: compressive strength(抗压强度) scanning electron microscopy（扫描电镜） ultrasonic pulse velocity（超声波速） electrical resistivity (电阻率) rapid chloride permeability（氯离子渗透）
Fig.1. Particle size distributions and X-ray diffraction results for OPC, UtSCBA and UtFA.
Particle size distribution and X-ray diffraction (XRD) results
The experiment design
• To evaluate the effects of untreated sugarcane bagasse ash (UtSCBA) and untreated fly ash (UtFA) compressive strength (CS), scanning electron microscopy (SEM),ultrasonic pulse velocity (UPV), electrical resistivity (ER) and the rapid chloride permeability (RCPT) tests are carried out.
• Key words: gypsum (石膏) intensity（强度） crystallinity（结晶度）
Fig. 2. Micrographs of cement and pozzolans.
Scanning electron microscopy
• A micrograph for the OPC (Fig. 2a) shows angular and irregularly shaped particles.
• Fig. 1c shows the UtSCBA is a material with low crystallinity. • Fig. 1d shows the UtFA used in this research is mainly made up of Quartz
(SiO2) and Mullite (Al2Si7O4.85).
(a)Parcile size distributions of material
(b) X-ray diffraction resuslts for OPC
•
(c) X-ray diffraction results for UtSCBA
(d) X-ray diffraction results for UtFA
• Fig. 1a shows the average particle size for the OPC, UtSCBA and UtFA were21.15, 53.91 and 60.77 lm.
• Fig. 1b shows X-ray diffraction diagrams for the OPC.,C2S and C3S.are observed. Also C3A, C4AF, and gypsum are observed but with less intensity.
10%. • According to the ASTM 618, UtSCBA can be classified as a Class
N (calcined natural) pozzolan and UtFA as Class F pozzolan.
• Key words: pozzolan(火山灰)
Chemical compositions of OPC, UtSCBA and UtFA
Table.1
Chemical analysis
• Table1 presents the major oxides for OPC, UtSCBA and UtFA. • The CaO values for UtSCBA and UtFA were found to be less than
• Sugarcane Bagasse Ash(SCBA) has substantial amounts of Silica (SiO2), Alumina (Al2O3) and Ferric Oxide (FeO ) , indicating that SCBA can also be used as a mineral admixture. Key words: mineral admixture (矿物掺合料) mortar(砂浆)
ApplΒιβλιοθήκη Baiducation of the new building materials
Introduction of the paper titile
Paper title :Mechanical and durability properties of mortars prepared with untreated sugarcane bagasse ash and untreated fly ash.
Key words: Mechanical (力学) durability（耐久性） property(性能) sugarcane bagasse ash（甘蔗灰）SCBA fly ash(粉煤灰)FA
Why these materials can be used in cocretes?
• Research on FA(Fly ash) shows that its presence improves the workability of mortars and concretes .
• Key words: compressive strength(抗压强度) scanning electron microscopy（扫描电镜） ultrasonic pulse velocity（超声波速） electrical resistivity (电阻率) rapid chloride permeability（氯离子渗透）
Fig.1. Particle size distributions and X-ray diffraction results for OPC, UtSCBA and UtFA.
Particle size distribution and X-ray diffraction (XRD) results
The experiment design
• To evaluate the effects of untreated sugarcane bagasse ash (UtSCBA) and untreated fly ash (UtFA) compressive strength (CS), scanning electron microscopy (SEM),ultrasonic pulse velocity (UPV), electrical resistivity (ER) and the rapid chloride permeability (RCPT) tests are carried out.
• Key words: gypsum (石膏) intensity（强度） crystallinity（结晶度）
Fig. 2. Micrographs of cement and pozzolans.
Scanning electron microscopy
• A micrograph for the OPC (Fig. 2a) shows angular and irregularly shaped particles.
• Fig. 1c shows the UtSCBA is a material with low crystallinity. • Fig. 1d shows the UtFA used in this research is mainly made up of Quartz
(SiO2) and Mullite (Al2Si7O4.85).
(a)Parcile size distributions of material
(b) X-ray diffraction resuslts for OPC
•
(c) X-ray diffraction results for UtSCBA
(d) X-ray diffraction results for UtFA
• Fig. 1a shows the average particle size for the OPC, UtSCBA and UtFA were21.15, 53.91 and 60.77 lm.
• Fig. 1b shows X-ray diffraction diagrams for the OPC.,C2S and C3S.are observed. Also C3A, C4AF, and gypsum are observed but with less intensity.
10%. • According to the ASTM 618, UtSCBA can be classified as a Class
N (calcined natural) pozzolan and UtFA as Class F pozzolan.
• Key words: pozzolan(火山灰)
Chemical compositions of OPC, UtSCBA and UtFA
Table.1
Chemical analysis
• Table1 presents the major oxides for OPC, UtSCBA and UtFA. • The CaO values for UtSCBA and UtFA were found to be less than
• Sugarcane Bagasse Ash(SCBA) has substantial amounts of Silica (SiO2), Alumina (Al2O3) and Ferric Oxide (FeO ) , indicating that SCBA can also be used as a mineral admixture. Key words: mineral admixture (矿物掺合料) mortar(砂浆)