0188-4999
0188-4999
S0188-49992018000100079
10.20937/rica.2018.34.01.07
Ecuador
Venezuela
Ecuador
00
00
2018
00
00
2018
34
1
79
91
[
1973
13
6
6
630-3
]
[
ASTM
2009
8
]
[
APHA
1998
20a
1325
]
[
2004
39
9
9
2465-72
]
[
2005
80
7
7
723-36
]
[
2005
167
1
1
211-9
]
[
1993
26
7
7
1365-74
]
[
1985
140
1
1
75-7
]
[
1997
16
6
6
545-55
]
[
1997
19
1
1
324-33
]
[
2004
155
7
7
587-95
]
[
1997
26
6
6
1478-83
]
[
1984
81
6
6
1696-700
]
[
2007
9
5
5
371-84
]
[
2011
13
]
[
2000
40
4
4
419-26
]
[
1980
33
1
1
108-17
]
[
2007
67
2
2
190-205
]
[
2005
62
2
2
174-84
]
[
2002
31
5
5
649-56
]
[
1996
35
42
42
13664-72
]
[
1999
36
2
2
152-7
]
[
1988
102
]
[
1999
30
8
8
963-9
]
[
1993
12
6
6
1079-94
]
[
2012
37
10
10
782-8
]
[
1995
30
3
3
221-51
]
[
2006
6
4
4
236-42
]
[
2008
152
2
2
506-15
]
[
2004
57
4
4
387-93
]
[
1994
60
10
10
3597-601
]
[
2000
11
5
5
305-12
]
[
2009
1
1
1
12-25
]
[
1995
87
3
3
319-36
]
[
2009
176
3
3
375-82
]
[
2010
158
3
3
855-61
]
[
2002
50
2
2
107-13
]
[
2000
21
10
10
1099-110
]
[
2002
17
5
5
462-71
]
[
2004
21
1
1
103-20
]
[
1995
28
3
3
303-24
]
[
2007
25
2-4
2-4
1-9
]
[
2009
8
2
2
250-3
]
[
1980
73
1
1
203-7
]
[
2012
3
1
1
1-40
]
[
2005
59
2
2
289-96
]
[
1996
25
2
2
212-9
]
[
2004
29
7
7
369-76
]
[
1997
31
6
6
1769-76
]
[
2006
141
3
3
519-25
]
[
1982
2
3
3
213-34
]
[
2002
36
11
11
2429-35
]
[
2003
53
8
8
993-1003
]
[
1995
14
11
11
1997-87
]
[
2006
6
1
1
170-2
]
[
1995
30
3
3
289-301
]
[
1994
42
4
4
636-41
]
[
1981
22
22
54-7
]