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Online since: August 2014
Authors: Zhang Zheng, Liang Li, Yin Fei Yang, Ning He, Wei Zhao
Table 3 Thermal expansion, thermal conductivity, and specific heat of Al 7075 alloy at different temperatures [10], as well as the convection coefficient (h) of Al 7085 between aluminium and water [11]
T/℃
Thermal expansion
(10-6/ K)
T/℃
Thermal conductivity, k
(kW/m K)
T/℃
Specific heat, hc (J/kg K)
T/℃
Convection coefficient, h (Al and water), ×106(kW/m2 K)
20
21.8
0
0.11
20
837
50
200.1
100
23.6
100
0.12
100
896
100
4.0
200
24.5
200
0.14
200
963
200
13.5
300
25.4
300
0.15
400
1130
300
16.0
400
0.16
477
1193
400
11.0
500
0.17
500
7.0
2.2.2.
Online since: December 2012
Authors: H. Hussin, S.F. Saiyid Hashim, S. Ismail, Norazharuddin Shah Abdullah
Bond Type
BSD
(cm−1)
Barley Straw24 (cm−1)
Bamboo (Phyllostachysincarnata)23
(cm−1)
Bamboo (Gigantochloa scortechinnii)17
(cm−1)
-OH stretching
3394.4
3427.0
3429.0
3425
C-H2 stretching
2929.7
2916.3
2937.0
2939
-OH bending
1632.4
1642.6
1657
1693
C-H stretching
1458
1421.3
1462
-
Aromatic skeleton vibration
1424.4
1421.3
1422
1512
C-O-C stretching
1160, 898
1166, 896
1125
1161, 894
C-C stretching
1055
1044
1031
1037
The behaviour in the 3450-3300 cm−1 region shows the hydroxyl stretching vibrations of hemicellulose.
Online since: January 2013
Authors: Jiang Rong Xiao, Peng Yao, Sheng Yin Zhou, Kun Tian, Ru Guang Li
Table 3 Physical and mechanical properties
Number
Consistency
/cm
Bleeding rate / %
Apparent density
/ kg•m-3
28d compressive strength /MPa
28 d flexural strength /MPa
TD1
9.6
5.5
2015
38.8
6.3
TD2
8.7
4.6
896
18.3
3.7
TD3
8.9
4.1
1518
31.5
6.4
TD4
7.8
2.6
1538
32.1
7.1
TD5
7.1
2.1
1536
35.2
7.5
Table 4 Durability and functionality
Number
Softening coefficient
Coefficient of compression resist 28 days
Thermal conductivity
(W/(m·k))
Initial cracking time
/minute
TD1
0.89
0.92
0.91
6253
TD2
0.81
0.81
0.15
7265
TD3
0.89
0.97
0.38
7130
TD4
0.91
1.09
0.41
8314
TD5
0.94
1.11
0.42
10758
Table 3(4) show that the composition of cement paste is changed by mixing electromagnetic wave absorbing resonators.