אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
٢٠٢
٢٠٢
א
א
W،،אא،א
אאאאאאאאאא א א ،א א א א א א אאאאאא Wאאאאאא K אאא אאאאאאא א ،א אא א א א א א א א ، א،אאאא אאאאאאאאאאאאא א א ،א Kאא،אא ? ?? א?אא Kאאאאאאא אאאאאאא ،א،אאאא Kאאאאא W א א א א Kא
אאאא
٢٠٢א א
א،אאאא،אא
Kא،،אאאאא W
א א אא א א א א
Kאאאאאא
،،،،אאKאא אאאאKא
Kאאאאאאאאא אאאאאאאאא
אאאאאאאאK אאKאאא אKאאאאאאאא
Kאאאאאאאאא א א ،א א א א א אאאאאאאא אאאאאא
אKאאאKא אא Kאא א א א א א א א א א א אא
Kאאאאאאא
א א א א א Kאאאא
Kאא
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
אאא
אאא
١
אא٢٠٢א אאא אאא
Wאא Kאאאאאאא
אאאא
אאאאאKאא Kאאאאאאא WאאאאWאא Kאאא• א Kאאאא• א Kא • Kא • KאאאאאWאאא Kא٣Wאאא KאאאאאאWאא
-١-
אא٢٠٢א אאא אאא
אאא WK١{١ Wאא Kאא Kא אאאאא K Kאאאאאאאאאא Kא Kאאאאאא WאK٢{١ אEא،א،אFאאאא אאאאא Kאאא אא א אא Eא א ،אF א א Kאאא א Eא ،א א ،אF א אא
Fאאא אאאא
KEאאאFאאEא KE١{١Fאא(water/cement ratio)אא א א א ٢٨אאW١{١ Kא -٢-
אא٢٠٢א אאא אאא
אא א (MPa)٢٨
(w/c ratio) ٠{٧٠
٢٠
٠{٦٢
٢٥
٠{٥٥
٣٠
٠{٤٨
٣٥
٠{٤٣
٤٠
٠{٣٨
٤٥
Wאאאאא אא
K١{٢{١
אאאאא
Kאא אא
K٢{٢{١
Wאאא א א א א א א א Wאא א • Kאאאא א E F א א א א Wא • א Kא
אא אאאא Wא• א Kאאאא -٣-
אא٢٠٢א אאא אאא
٠{٠٠٤E١{١Fאאא١٣א EאHאH אFאאאK .%٥٠אאאאאKאאא
KאאW١{١ Mixing timeWא
K٣{٢{١
Wאאאא א אא Kאאא Kאא ١{٢٥ אאא
אאאאאאK א ١{٢Kא
K
-٤-
אא٢٠٢א אאא אאא
אאאW٢{١ E٣Fא
EFא ١
٠{٨
١{٢٥
١{٥
١{٥
٢{٣
١{٧٥
٣{١
٢
٣{٨
٢{٢٥
٤{٦
٣{٢٥
٧{٦
א
K٣{١
אאאאא Kאאא Wאאא • א • א • א א• א • א• א
-٥-
אא٢٠٢א אאא אאא
א א א Kא אא אאאאKאאא (segregation)Kאאא(cohesion)
אאאא אאא
Kאא
אאאא٢{١ Kאא
-٦-
אא٢٠٢א אאא אאא
KאאאאW٢{١
א
K٤{١
אאאא
אאאKE٣{١Fא
٤٠ ٤٢٠אKא ٤{١ Kא א א א
Kא
-٧-
אא٢٠٢א אאא אאא
KאאאW٣{١ אאאאWא א א א א
Kא K٢٢٠אא٣٦٠
-٨-
אא٢٠٢א אאא אאא
KאW٤{١ Wאא Kא
E١
Kא
E٢
Kאא
E٣
Kא
E٤
Kאאא
E٥
א א א א אא א K٧٥א٢٥אKא
א א א א א א
אK٠{٩٥ ٠{٩٠א ١٠٠ ٤٠א אאK٢٥١٥אא
אאאאאאאאא
Kאא
-٩-
אא٢٠٢א אאא אאא
אאאאאא Kא א א א א א
אא Kא א
Kאאאאאא Wא
K٥{١
،אאא אאאKא
אאאאKאאא
Kא Wאא Kאאאאאאא אאאא Kא،
א אא אאאא א א Kא אא א
Kא
Kאאא אאE٥{١Fא
Kא א אאא KE٦{١Fאאא
- ١٠ -
אא٢٠٢א אאא אאא
EאFאW٥{١
אאאW٦{١ Fאא،אאא KE٨{١٧{١
KאאEאFאW٧{١ - ١١ -
אא٢٠٢א אאא אאא
KאW٨{١ Wאאאא א אאאאא
אKE٩{١KFאאאאאא
א אא،אאאא
אאאאאאא
א א א א Kא אKE١٠{١KFא א Kאא Kא א א ٢ א
אאאאא
Kא ٥٠אKאא
א א א א א Kא א
Kאאא
א א
Kאאאא
- ١٢ -
אא٢٠٢א אאא אאא
KאאאאאאW٩{١
KאאאאאאW١٠{١ - ١٣ -
אא٢٠٢א אאא אאא
Wא
K٦{١
אאאאאאאאאאא
אא Kא
(durability) א א א אאאאא ١١{١ Kאא
א % ٥ אא K א
Kאאאא١٢{١K%٣٠אא
א (permeability) א % ٣٥ % ٣٠ אא Kא אא א ١١{١ ١٠{١ א א א אאאאאא Kא א Kא א א W א Kא (MPa) ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
70 60 50 40 30 20 0
2
4
6
(%) ﻧﺴﺒﺔ اﻟﻔﺮاﻏﺎت
8
10
Kאאאאא אW١١{١ - ١٤ -
אא٢٠٢א אאא אאא
10
ﻣﻌﺎﻣﻞ اﻟﻨﻔﺎذﻳﺔ
8
6
4
2
0 0
10
20
30
40
(%) ﻧﺴﺒﺔ اﻟﻔﺮاﻏﺎت داﺧﻞ اﻟﻌﺠﻴﻨﺔ اﻻﺳﻤﻨﺘﻴﺔ
KאאאאW١٢{١ Wאא
K١{٦{١
אאאא א א א
KאאאאאKא Wאא
K٢{٦{١
אKאאא א
KEאאFא אא אאאאא אא K
W(vibrators)אא - ١٥ -
אא٢٠٢א אאא אאא
(internal vibrators)Wאאאאא
K٣{٦{١
KE١٣{١Fאא אאאאאאא
אאא KHz ٢٠٠ ٧٠ אא א K א
KאE١٠{٥אאF א א אא אא א א אאאאאאא
KE١٤{١FאאE١٥٠אF K٠{٥אאאאאאא
אאKאא ٢٠١٠אאא
אא אKאא א K(segregation) א א (over-vibration) א Kאאא
אאאאאW١٣{١ K
- ١٦ -
אא٢٠٢א אאא אאא
KאאאאאאW١٤{١
(external vibrators)Wאאאא
K٤{٦{١
Kאאאאאאאאאאא
Kאאאאאאאאאא אאאא
א אאא Kא אאא א א אא
אאאאאא
KHz١٥٠٥٠אאאKא אאאאאא אאאאKאאאאKאאא Kאאאאא
(vibrator tables)Wא
K٥{٦{١
(precast concrete) א א א
א אא K
אאKאאאאא אא
KHz١٢٠٢٥אאאKאאאא
- ١٧ -
אא٢٠٢א אאא אאא
(revibration)Wא
K٦{٦{١
אאא א
KאאאאK%١٥
א (bleeding)אאאא
אאאאאאא אא Kאאא
Kא Kאאאאאא א אKאאאא
Kאאאא Wא
K٧{١
אאKאאא א א Kא א א WאאKאאאא
א א Kאא א א א א א אא א א KE١٥{١ F
אא אKאא א אא K
א (floating)א אא א אKE١٧{١F E١٦{١F א Kאאא،אא
אאא
Kא Kאא - ١٨ -
אא٢٠٢א אאא אאא
אW١٥{١
KאאW١٦{١
- ١٩ -
אא٢٠٢א אאא אאא
KאאW١٧{١
- ٢٠ -
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
א
א
٢
אא٢٠٢א אאאא
Wאא Kאאאאאאאאא Kאאאאאא WאאאאWאא אאFאאא • KEאאא
Kאאאא• א א • Kאאאאא • KאאאאאWאאא KאWאאא KאאאאאאWאא
-٢١ -
אא٢٠٢א אאאא
K١{٢ א EאאFא אאאאאאאאK KאאאאE١{٢Fאא
אאאאאא
א אאאאKאא
א Kא א Kא א % ٧٥א אא KE٢{٢F٢٨א (MPa) ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
50
(ﻣﺪة اﻟﻤﻌﺎﻟﺠﺔ )اﻷﻳﺎم
40
ﻃﻮال اﻟﻤﺪة 7
30
3 0
20 10 0 0
30
60
90
120
150
180
(اﻟﻌﻤﺮ )اﻷﻳﺎم
KאאאW١{٢
-٢٢ -
אא٢٠٢א אאאא
(%) ﻧﺴﺒﺔ ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ
100 75 50 25 0
0
3
7
28
(ﻣﺪة اﻟﻤﻌﺎﻟﺠﺔ )اﻷﻳﺎم
٢٨אאWK٢{٢
Wאאאא
K٢{٢
אאא אאאאא
٢L ٠{٥ א א א א א
KE٣{٢Fאא
KאW٣{٢ -٢٣ -
אא٢٠٢א אאאא
Kאאאאאאא
אאא Kאאא ٤{٢ א Kאאא٢٨אKאאא
(%) ﻧﺴﺒﺔ ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ
120 100 80 60 40 10
20
30
40
50
(درﺟﺔ ﺣﺮارة اﻟﻤﻌﺎﻟﺠﺔ )درﺟﺔ ﻣﺌﻮﻳﺔ
K٢٨אאאW٤{٢
Wא
K٣{٢
KאKאאא Kאא • Kאאא • Wאא K١{٣{٢ Kאאאא Wא Ea אאא
אאאKא
-٢٤ -
אא٢٠٢א אאאא
אאאאאאK Kאאאאא Wא Eb א א א
א Kא א Kאאא אאאאאא KאKאא Wאא Ec
אאא א Kא א א א ، א א א א אא א
KאאאאאאאKא
א ،E٥{٢F א אאא
א א Kא א K
KאW٥{٢ -٢٥ -
אא٢٠٢א אאאא
א א א א א א
א א א ،א Kאא Wאאא K٢{٣{٢ אא א א א א א א
Kאאא Wא אEa אאא KE٦{٢ F א א א
א א Kא א א א א א א א א א Kאאאאא
KאאאW٦{٢
-٢٦ -
אא٢٠٢א אאאא
Wאא אEb אאאא א אא KE٧{٢ F א
א Kא א א אא אא א א א Kא א א אא
א א אא א Kא א א א E F א א א KאאKאאא א א א ،א א אא אאאאאא א
KאאאKאאאאאא
-٢٧ -
אא٢٠٢א אאאא
KאאW٧{٢ Wא אEc K EFאא
KE٨{٢F אאאאא
א Kא א אאKאאא
Kאאא Wא Kא• א Kאא• א -٢٨ -
אא٢٠٢א אאאא
Kאאאאאאא אאאאא Kאא
אאאאאW٨{٢ Kא WאK٤{٢ אאא٧א (ACI 308)אאא Kא א % ٧٠ א א
٧א א ١{٢א
١٤א א א ٣אא א א K١٠אאאאא אE٢١ZאאFאW١{٢ KEACI 306R-78Fא
-٢٩ -
אא٢٠٢א אאאא
EאFא
א
٢٨א %٩٥
%٨٥
%٦٥
% ٥٠
٢٣
١٦
٨
٤
٢٤
١٨
١٠
٦
א
٢٠
١٢
٤
٣
א
אא،٢٥٥אא Kאאא(BS8110)א
60 t + 10
אאא אא
80 t + 10
אאא
-٣٠ -
אא٢٠٢א אאאא
%٥٠א
80 t + 10
אאא אא
140 t + 10
אאא KאאאWt אאW١
K٢٠Zא%٧٠Zא 2=
60 KZא 20 + 10
K١٠Zאא٪٤٠ 4=
80 K٤Zא 10 + 10
אאW٢ K١٠Zאא%٤٠Zאאא 7=
140 K٧Zא 10 + 10
א E٠{٤ א א F א א E٠{٥אאFאא א א א א Kא
-٣١ -
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
אאא
אאא
٣
אא٢٠٢א אאאאאא
Wאא אאאאאאאא
אאKאאאאאאא
אאKאאאא Kאאא WאאאאWאא Kאאאא • Kאאאא • Kאאאא • KאאאאאWאאא KאWאאא KאאאאאאWאא
- ٣٢ -
אא٢٠٢א אאאאאא
K١{٣ Kאאאאא Wאא Kאאא• א Kאאא• א אא• א Kא א א א א א א אא Kאאאאא،אאא
WאאאK٢{٣ אאא א KE١{٣F٢٤אא
WאאאאK٣{٣ א א א א א א א א Kאאאאא א א א א א אא אאאאאאKECaCl2) Kאאאא
אאא א • אאאאאא • אא• א Kאאא • - ٣٣ -
אא٢٠٢א אאאאאא
Wאאאא א• א א • אא • Kא • Kאאאאא Kא%٢١אאא אא % ٢ ٢{٣
KאאE٢٨FאאKא
אאאאא אאאא
K١٠٥אא
אאא، ٦אאא % ١ Kא א אאאא א Kאאאאאא Wאאאא א• א א • אא • א • Kאאאאא Kאאאא
- ٣٤ -
אא٢٠٢א אאאאאא
35
(MPa) ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
اﺳﻤﻨﺖ ﺳﺮﻳﻊ اﻟﺘﺼ ﻠﺪ
اﺳﻤﻨﺖ ﺑﻮرﺗﻼﻧﺪي ﻋﺎدي
0 0
4
8
12
16
20
24
(اﻟﺰﻣﻦ )ﺳﺎﻋﺎت
KאאאאאW١{٣ 50
(MPa) ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
40 آﻠﻮرﻳﺪ اﻟﻜﺎﻟﺴﻴﻮم
30 20
ﺑﺪون آﻠﻮرﻳﺪ اﻟﻜﺎﻟﺴﻴﻮم
10 0 0
10
20
30
40
(اﻟﺰﻣﻦ )اﻷﻳﺎم
KאאW٢{٣
- ٣٥ -
אא٢٠٢א אאאאאא
WאאאK٤{٣ ٢٤Kאאאאאא אאא
KE٣{٣F٢٨אא%٦٠אא
(%)ﻧﺴﺒﺔ ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ
100 80
اﺳﺘﻌﻤﺎل اﻟﺤﺮارة ﺧﺮﺳﺎﻧﺔ ﻋﺎدﻳﺔ
60 40 20 0 ﻳﻮم واﺣﺪ
28 ﻳﻮم (ﻋﻤﺮ اﻟﺨﺮﺳﺎﻧﺔ )اﻷﻳﺎم
אאאאאאW٣{٣ Kאאאא א א Kא אא א ،א א אא • Kא אאKא אאאאאא • א אאKא אא א
KE٤{٣Fאא
אKאאWא • Kאאאא
- ٣٦ -
אא٢٠٢א אאאאאא
60
(درﺟﺔ اﻟﺤﺮارة )درﺟﺎت ﻣﺌﻮﻳﺔ
٣آﻎ\م350 40 ٣آﻎ\م300 20
0 0
8
16
24
(اﻟﺰﻣﻦ )ﺳﺎﻋﺎت
אאאאאאW٤{٣ Kא
WאK١{٤{٣ Kא א
א א א א א אא א K٣{٣
Kאאא ٥{٣Kאאא א אאKאאאאא
Kאא
אאאאאאא K٦{٣אאKא Wא • אאKאאאא אא א אאKE ٢٠Fא
Kא
- ٣٧ -
אא٢٠٢א אאאאאא
א אאK ٥ ٣אאאא אKאאKאאא
Kאא Wאאא •
Kאאאא אאא א
،אKא ٣٣ ٢٢אאא אאאא Kא ١١אא
K٧{٣
Wאאאא • ٨٢ ٦٦אאאאאא א א
אא אא אK Kא
אאאW٥{٣ - ٣٨ -
אא٢٠٢א אאאאאא
80
(درﺟﺔ اﻟﺤﺮارة )درﺟﺎت ﻣﺌﻮﻳﺔ
ﻓﺘﺮة اﻟﺤﺮارة اﻟﻘﺼﻮى 60
ﻓﺘﺮة إرﺗﻔﺎع اﻟﺤﺮارة
ﻓﺘﺮة ﺗﺒﺮﻳﺪ
40
ﻓﺘﺮة ﻗﺒﻞ إدﺧﺎل اﻟﺒﺨﺎر 20
0 0
5
10
15
20
25
(اﻟﺰﻣﻦ )اﻟﺴﺎﻋﺎت
KאW٦{٣
KאאאW٧{٣ א א א אא א א ٨{٣ א
KאאאאKא - ٣٩ -
אא٢٠٢א אאאאאא
א = ∑ at (T + 10) א א א א א א
KE٩{٣F
(MPa) ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
40
30
20
10
0 0
500
1000
1500
( أﻳﺎمx ﻧﻀﺞ اﻟﺨﺮﺳﺎﻧﺔ )درﺟﺎت ﻣﺌﻮﻳﺔ
KאאאW٨{٣ درﺟﺔ اﻟﺤﺮارة
اﻟﻤﺴﺎﺣﺔ = اﻟﻨﻀﺞ
-١٠o ﻣﺌﻮﻳﺔ (اﻟﺰﻣﻦ )اﻟﺴﺎﻋﺎت
אאאאאאW٩{٣ א
- ٤٠ -
אא٢٠٢א אאאאאא
KאאאאאW
אא ٨٠o ٥٠o
١٠o -١٠o ﻣﺌﻮﻳﺔ ٣
٦٫
١٤٫٥
١٦
EאF א
L L L L
60 = 20 * 3
א
⎛ 20 + 90 ⎞ 193 = 3,5 * ⎜ ⎟ ⎝ 2 ⎠
אאא
720 = 90 * 8
אאא
⎛ 90 + 60 ⎞ 113 = 1,5 * ⎜ ⎟ ⎝ 2 ⎠
א
١٠٨٦ = א - ٤١ -
אא٢٠٢א אאאאאא
WאאK٢{٤{٣ אאאא
K٢٠٦א٢١٠J ١٦٠אא
אK ٢٤ אאא K٢٨אאאK אאאאאאא K١٠٠א Kאאא ،אאאאא Kאאאאא،א Kאאאא ٨ א א א K ٣ א א א ٣٠ ٢٠אאK ١٧٥א
K א
- ٤٢ -
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
אאא
אאא
٤
אאא٢٠٢א
אאאאאא
Wאא אאאאאא אKאאאאאא
אKאאאאא Kאאאאאאאא Wאא Wאאאאא Kאאא • Kאא • Kאאאא • Kאאא • Kאאא • Kאא • Kאאא • KאאאאאWאאא KאWאאא KאאאאאאWאא
-٤٣-
אאא٢٠٢א
אאאאאא
K١{٤ אאאאאאא
W
Kאא Kאא Kא א Kאא א א،א א
א אאאאWאאא Kאא
WאאK٢{٤ Kאאא،אאאא א א א א K א א א א א Kא אא
אאאאאא אK Kאאא ١{٤א Kאא
٢٨אKאאאאא
א א א א Kאא א K٢٨٣אאאא
Kא א א א א א Wא א • אא • א • -٤٤-
אאא٢٠٢א
אאאאאא
א • 50 (ﻋﻤﺮ )اﻷﻳﺎم 28
(MPa) ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
40
7
30
3 20 1 10 0 -10
0
10
20
30
40
50
(درﺟﺔ اﻟﺤﺮارة )درﺟﺎت ﻣﺌﻮﻳﺔ
KאאאW١{٤ א ،א אא Kאאאא Kאאאאא ،א א א אא
אאאK٢{٤
אK א אE٣{٤Fאא אאא אK٤{٤א
Kאאאאאאאאא
-٤٥-
אאא٢٠٢א
אאאאאא
(mm) درﺟﺔ اﻟﺘﺸﻐﻴﻠﻴﺔ
150
100
50
0 0
10
20
30
40
(درﺟﺔ اﻟﺤﺮارة )درﺟﺎت ﻣﺌﻮﻳﺔ
KאאאאאW٢{٤
(٣آﻤﻴﺔ اﻟﻤﺎء )آﻎ\م
190 180 170 160 150 0
10
20
30
40
(درﺟﺔ ﺣﺮارة اﻟﺨﺮﺳﺎﻧﺔ )درﺟﺔ ﻣﺌﻮﻳﺔ
KאאאאאW٣{٤
-٤٦-
אאא٢٠٢א
אאאאאא
(MPa)
ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
80
60
40
20 0.2
0.4
0.6
(W/C ratio)
0.8
1
ﻧﺴﺒﺔ اﻟﻤﺎء إﻟﻰ اﻹﺳﻤﻨﺖ
KאאאאW٤{٤
WאאK٣{٤ אאK ١٦אאא
K٣٢אK
א (T) א א א א א א KEא،א،אF T=
0,22(TaWa + TcWc ) + TwWw + TwaWwa 0,22(Ww + Wc ) + Ww + Wwa
W
KאאWT E٣LFאWW
אWa אWc -٤٧-
אWw
Kאא אWwa
אאא٢٠٢א
אאאאאא
KEא،א،אFא(T)אאאאW١ E٣\Fא
אא
٥٠
٣٣٥
א
٤٠
١٨٣٩
א
٣٠
١٦٧
א
EFא
Wאאאא T=
0,22(40 x1839 + 50 x335) + 30 x167 24878 = = 38.5o C. 0,22(1839 + 335) + 167 645
אאאאא ؟א Wא 645 0.22 x335
• א
645 0.22 x1839
• א
645 167
• א
8.8 = 1.6 =
3.8 =
WאK١{٣{٤ אא א א א א א א א
Kא % ٨٥ ٧٠אאEא אFא K ١٦אא ١٠אא
Wא
אאא • -٤٨-
אאא٢٠٢א
אאאאאא
Kא • אא• א Kאאאא • WאK٢{٣{٤ א Eא אF א א אא א
א א ٠{٥ א א א F א אא
،אKאאאא KE٠{١٢א ١٠אא٣٨אא Wאאא Kאאא • KאאEF • KE٥{٤Fאאאא• א
. ﺟﻬﺎز ﺗﺒﺮﻳﺪ اﻟﻤﺎء:٥٫٤ -٤٩-
אאא٢٠٢א
אאאאאא
א Kא אא א א א
K(T)אאאאא
T=
0,22(TaWa + TcWc ) + TwWw + TwaWwa − 112Wi 0,22(Ww + Wc ) + Ww + Wwa + Wi
W KאWWi Eא،א،אFא Tאאא אW٢ K٣٥ZWiא
E٣\Fא
אא
٥٠
٣٣٥
א
٤٠
١٨٣٩
א
٣٠
١١٧
א
EFא
Wאאאא T=
0,22(40 x1839 + 50 x335) + 30 x132 − 112 x35 19908 = = 30.8o C. 0,22(1839 + 335) + 132 + 35 645
٧{٨ א א א ٣٥ א א K Kאאאא٦{٤א -٥٠-
אאא٢٠٢א
אאאאאא
درﺟﺔ ﺣﺮارة اﻟﺨﺮﺳﺎﻧﺔ درﺟﺎت ﻣﺌﻮﻳﺔ
(درﺟﺔ ﺣﺮارة ﻣﺎء اﻟﺨﻠﻄﺔ )درﺟﺎت ﻣﺌﻮﻳﺔ
30
35 20
32 29 27
10
24
0 20
25 30 35 40 (درﺟﺔ ﺣﺮارة اﻟﺮآﺎم واﻹﺳﻤﻨﺖ )درﺟﺎت ﻣﺌﻮﻳﺔ
KאאאאאאאW٦{٤
KאאK٤{٤ Wאאאאא Kאאאאאאא • אא אאא אאא • Kאא Kא • Kא • K٤٥אא • K٣٠٠אא • -٥١-
אאא٢٠٢א
אאאאאא
(Retarding admixtures)WאאK١{٤{٤
Wאאאאא אאאאאWאאאא K١ Kאאא אאאאWא K٢ Kאאאאאא
Kאאאא אK٣ א K אאאאאא א
Wאא א• א א • א • אא •
א אאא אאא אא אKאאא א ٢٨א ٧אא
K٧{٤،א
KEF،א،אאאאא K٤אא אא%٠{٠٥א Kא%١٠{٢אאאאאאא
-٥٢-
אאא٢٠٢א
ﻣﻘﺎوﻣﺔ اﻟﻀﻐﻂ
אאאאאא
ﻳﻮم واﺣﺪ
أﻳﺎم7
ﺑﺪون إﺿﺎﻓﺎت
ﻳﻮم28
ﺑﺎﻹﺿﺎﻓﺎت
KאאW٧{٤ WאאאK٥{٤
א אאKא אאK ٨א אאאא
KאאKאאאא
אאא KאאאאKא Wאאאאאא Kאאא • Kא • Kא • אאא ٨{٤ א
Kאאאא
-٥٣-
אאא٢٠٢א
אאאאאא
אאאאW٨{٤ K(ACI 305, R-77)אא א
-٥٤-
אאא٢٠٢א
אאאאאא
٠{٥אאאא א א א אאא אL٢L
KאL٢L١
אאאKאא٩{٤
K٧٠אאאאאא،
KאW٩{٤
Kאאאאא אאאאאא • Kאאא
Kאאאאא • Kאאאא Wאאא٨{٤אאאW١ KO١٨Wאא .%٤٠Wאא KO٢١Wאא K\א١٦Wא KאL٢L٠{٨Zאא -٥٥-
אאא٢٠٢א
אאאאאא
Wאאא٨{٤אאאW٢ KO٣٠Wאא .%٣٠Wאא KO٣٢Wאא K\א٣٢Wא KאL٢L٢{٠Zאא אאO٢١אא،א ٠{٤אא ،\א٣אא
KאL٢L
WאאK٦{٤ Kאאאאאאאאא אאאאאא Kאאאאאא א א א א א א א א Kאא
אאאאאא Kאא
Wא א א א א א אא • א Kאא
א ، ٢٤ א א א •
אאKאאאאאאא K٢٤אאאאא -٥٦-
אאא٢٠٢א
אאאאאא
WאאK٧{٤ ،אא ،אא אאא
Kאא(JoulesFאאא Wאאא Kאא • Kא • Kאא • Kאא •
Kאאאאאא אאאאאאא ١{٤ Kאאא KאאאW١{٤
א
٪١٠٠
א
I
٪٨٥J ٨٠
א
II
٪١٥٠
א
III
٪٦٠J ٤٠
אא
IV
٪٧٥J ٦٠
V
-٥٧-
אאא٢٠٢א
אאאאאא
אאאאא Kאא٤ א،אאאאאא א KאאאKא אאאאאאא ٤{٣
אאאאאKאא
١٥א א ٣L ٥٠אא ١٢ Kאא
-٥٨-
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
אאא
אאא
٥
אא٢٠٢א אאאאאא
Wאא אאאאאאא אאאאאא
KאאאאKא Wאא Wאאאאא Kאאא • Kאא • Kאאא • Kאאא • Kאא • KאאאאאWאאא KאWאאא KאאאאאאWאא
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WK١{٥ אאKאאא
א،אKMPa ٣{٥ אאא א % ٥٠ א א K ٢٤ א א Kאאאא
אא אאאאאא א ١٠ אא א Kא א Kאאא
א א אא א א א א
Kאא
WאאK٢{٥ אאאאאאא
KאאאKאאאא
Kא אאאאא א Kא א א אא
אאKאאא Kאאאאאא
אאאאאאא Kאא Wאאאאא אW٣ אK١ E٣L١٢٠٣L٦٠Fאאא אK٢ Kא אK٣
-٦٠-
אא٢٠٢א אאאאאא
(CaCl2)אאא א Kאאאאאא א א אאאא Kאא א אא א אא אא א Wא
Kאא אאאEא אF KE٨٠٦٠Fא Kאא٥٢א ،אFאEΤFאאא א
(درﺟﺔ ﺣﺮارة ﻣﺎء اﻟﺨﻠﻄﺔ )درﺟﺎت ﻣﺌﻮﻳﺔ
K١{٥אאאאאEא،א
75
درﺟﺔ ﺣﺮارة اﻟﺨﺮﺳﺎﻧﺔ درﺟﺎت ﻣﺌﻮﻳﺔ
21
65 18 55
16
45
13 10
35 7 25 0
5
10
15
20
(درﺟﺔ ﺣﺮارة اﻟﺮآﺎم واﻹﺳﻤﻨﺖ )درﺟﺎت ﻣﺌﻮﻳﺔ
KאאאאאאאW١{٥
-٦١-
אא٢٠٢א אאאאאא
WאK٣{٥ א אא א א א א א
KאאאאאאאאE٢{٥F אאאאאKאא א KE٣{٥Fא
אא א א א א א Kא אא KE٤{٥ F א
אא א ١{٥ א א אא
KE١٠ZאאFא
אאאאאאאW٢{٥
אאאאW٣{٥ -٦٢-
אא٢٠٢א אאאאאא
KאאאאאW٤{٥ E ١٠ZאאFאאאW١{٥ (ACI 306R-78)אא EאFא
א
٢٨א
%٩٥
%٨٥
%٦٥
%٥٠
٢٩
٢١
١١
٦
٣٥
٢٨
١٤
٩
א
٢٦
١٦
٥
٣
א
א א א א א ٢٨אא ٪٥٠אא ٦א
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אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<퉉ö¹] אאאא
א
אאא
אאא
٦
אא ٢٠٢א אאא אא
Wאא Kאאאאאא Kאאאאאאאא Wאא אאאא Kאאאאא• א Kאאאא• א Kאאאאא• א Kאאאא• א Kאא• א KאאאאאWאאא KאWאאא KאאאאאאWאא
- ٦٤ -
אא ٢٠٢א אאא אא
WK١{٦ אKאאאאאאא
א Kא א
אאאKאאא KאאאאאKא
א א א א א KאאאKאא
Wאאא K٢{٦ Wאאאאא Kאאאא • Kאאאא • Kא(segregation)א • Kא • (workability)WאK١{٢{٦ א א א
א،(segregation)א
א،אאאאאK א אא א
(compaction)אKאאא .% ٣٠אא% ٥ אאאK١٠٫١ WאאאאK٢{٢{٦ ،א ،א א א א
Kאאאאא،אא،א،א - ٦٥ -
אא ٢٠٢א אאא אא
Wאא • אא،אאאאא
FאK (flow)א E٩٫٦Fא א Eא א
א א (segregation)Kא
KאאאאאKאאאא W• א א א K א א א א
Kאאאא אאא
K א א א
א א א K א א (round) א א א א א א א (spherical)
Kאאאאאאא Wאא• א
٢{٤ א א א א אאא אאאKEאאאF
Fאאאאא Kא א אאא ١{٦ KEאאאאא
אאKאאאאאא
אאאאKאא
Kאא
- ٦٦ -
אא ٢٠٢א אאא אא
140
(هﺒﻮط اﻟﺨﺮﺳﺎﻧﺔ )ﻣﻢ
120 100 80 60 40 20 0 0
60
120
(زﻣﻦ )دﻗﺎﺋﻖ
KאאאאאW١{٦ WאK٣{٢{٦
אאאא א،א،אא،א אWאאאא
Kאאא،א،א
slump testWאאאK١{٣{٢{٦ א א א א א א א א
(frustum cone) א א א K(ASTM C143-78) K٢{٦
- ٦٧ -
אא ٢٠٢א אאא אא
100ﻣﻢ
300ﻣﻢ
200ﻣﻢ
ﻗﺎﻟﺐ ﻣﺨﺮوط ﻧﺎﻗﺺW٢{٦ Wא Kאאא K١٦א٢٥ Kאא א אאאאאאא E٣{٦FKא
KE٤{٦Fאאאא א אאא א אאאא K(cohesion)אא א
אאאא אאK(lean concrete)א א א א א K א Kאאא
- ٦٨ -
אא ٢٠٢א אאא אא
KאW٣{٦
c) collapseא b) shear
a) True slump
KאאW٤{٦ flow testWאאK٢{٣{٢{٦
אא אא אא
א א K(super plasticizer admixture)
K٤٠א ٧٠٠ WE٥{٦Fא ٢٠٠Z
א-
١٣٠Z א ٢٠٠Z א -
- ٦٩ -
אא ٢٠٢א אאא אא
אאW٥{٦ Wא Kאאא Kא١٠ Kאאאא Kא K١٥١٥א Kאאא(D) Wאא(flow)
flow =
D − 200 x100 200 ZD
Kאא
- ٧٠ -
אא ٢٠٢א אאא אא
compacting factor testWאאK٣{٣{٢{٦
K(BS.1881:part2)אאא١٩٤٧אא א א
אאאאK٦{٦אא
אאאאאאא אKא Kאא
Wא Kאאאא Kאאאאא אא אא Kא Kאאאא P1Zאא אאאאא K
P2Zאא Wא(compacting factor)א
C.F =
P1 P2
אא١{٦Kאאא Kאאא
- ٧١ -
אא ٢٠٢א אאא אא
ﻣﻢ٢٦٠
ﻣﻢ٢٦٠
ﺑﺎب
ﻣﻢ٢٤٠
ﻣﻢ٢٤٠
ﺑﺎب
ﻣﻢ١٥٠
ﻣﻢ٢٨٥
אאW٦{٦ KאאאאאW١{٦ אאא א
EFא
-
٠{٧٨
٢٥J ٠
א
-
٠{٨٥
٥٠J ٢٥
-
٠{٩٢
١٠٠J ٢٥
F -
٠{٩٥
١٧٥J ١٠٠
א
א
Eא
אאאא - ٧٢ -
אא ٢٠٢א אאא אא
(Vebe Test)Wא א.٤٫٣٫٢٫٦ ١٩٤٠ אא אV. Bahrner א ﻧﺴﺒﺔ إﻟﻰ אvebe א
א א א (BS 1881 part 104 1983) א אא א אאאא Kא٧{٦ KK٤٠אא
אW٧{٦ Wא
(slump test)אאא א ٢٤٠Fאאאא אאא E٢٠٠ Kא E٢{٧٥ZFא - ٧٣ -
אא ٢٠٢א אאא אא
Kאא א א א א א (T) א Kאאאא
אאא
ﺷﻜﻞ. ﺛﺎﻧﻴﺔ٣٠ إﻟﻰ٥ ﻳﻜﻮن هﺬا اﻻﺧﺘﺒﺎر ﻣﻼﺋﻤﺎ ﺟﺪا ﻋﻨﺪﻣﺎ ﻳﺘﺮاوح اﻟﺰﻣﻦ ﻣﻦ.(Vebe seconds)
Kא(T)אא٨{٦ 1
ﻣﻌﺎﻣﻞ اﻟﺪﻣﻚ
0.9
0.8
0.7
0.6 0
4
8
12
(زﻣﻦ ﻓﺐ )اﻟﺜﺎﻧﻴﺔ KאאW٨{٦ WאאאK٣{٦ ،אאאאKאאא ،אKא،אאא א Kאא
- ٧٤ -
אא ٢٠٢א אאא אא
WאאאאK١{٣{٦ אאאא (porosity)אאא WאאK
(water/cement ratio)אא
E١
(compaction)אא
E٢
א
E٣
Kאא א א ٩{٦ א א Kאא א א א א
ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
KאאEFאא
ﺗﻜﺜﻴﻒ ﺑﺎﻟﻬﺰاز ﺗﻜﺜﻴﻒ ﻳﺪوي ﺧﺮﺳﺎﻧﺔ ﻣﻜﺜﻔﺔ آﻠﻴﺎ
ﺧﺮﺳﺎﻧﺔ ﻣﻜﺜﻔﺔ ﺟﺰﺋﻴﺎ ﻧﺴﺒﺔ اﻟﻤﺎء إﻟﻰ اﻷﺳﻤﻨﺖ
KאאאאאW٩{٦ - ٧٥ -
אא ٢٠٢א אאא אא
אאאאאאא ،א אWאאK٢{٦א
Kאאאא
E٠{٥ZאאFאאאW٢{٦
(MPa)א
א
א
א ٩١
٢٨
٧
٣
٥٠
٤٣
٣١
٢٢
٥٥
٤٨
٣٦
٢٧
(I)
٥٥
٤٩
٣٧
٢٩
א
٦٠
٥٤
٤٣
٣٤
(III)
(fc)א(Abram’s law) אא
⎡ ⎤ Vc fc = ⎢ ⎥ ⎣Vc + Vw + a ⎦
2
א :Vc א :Vw אאא :a :K - ٧٦ -
אא ٢٠٢א אאא אא
WאאK٢{٣{٦ Kאא،אא אאאא
Kאא א א א א WאאK٣{٣{٦
א Kא א
Wאאא
Kא Kא Kא Kא א ١٥٠ ١٠٠ C470-(ASTM אאKE٣٠٠Zא٥٠٠ZFאא
K١٠{٦E81 Wא ٢٥א KאאאאאאאK١٦ F אאאא KאE٣١{٥ - ٧٧ -
אא ٢٠٢א אאא אא
א אאאאא א ٢٤ ٢٠אE% ٩٠F K
Kאאא Kא٢٠אאאא א E١١{٦ F א א א א Kא א א א א
Kא א א א Kאאאאאאא KאMPa٠{٤٠{٢אא א K ٢٨ א א Kא٢٦،١٣٧٣אא K٢٨א٧٣א٣{٦ Wאא١{٢٥אא
f cu = 1.25 f cyl אZfcu אאZfcyl
K ⎛⎜ h ⎞⎟ אאאא ⎝d ⎠
h =2 d
אא
h =1 d
א
- ٧٨ -
אא ٢٠٢א אאא אא
א
KאאאאאW١٠{٦
אאאאאW١١{٦ א - ٧٩ -
אא ٢٠٢א אאא אא
K٢٨א٧٣אW٣{٦ א
٣
٣
%٦٦
%٤٠
%٨٠
%٥٥
א WאאK٤{٣{٦
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f t = kf c
m
Km k Kאא(ACI)אאא
ft = k fc MPaWftfc
Wאא (CEB)אאא
f t = 0.3( f c )
2/3
K0.11 0.07אאא Wא - ٨٠ -
אא ٢٠٢א אאא אא
(direct tensile strength)אאא١{٤{٣{٦
אאא אא
א א א ١٤{٦ ١٣{٦ KE١٢{٦ F Kאא P
ft =
P A
KאW ft KאW P
KאW A
P
KאאאW١٢{٦
אאW١٤{٦ א
אW١٣{٦ אא - ٨١ -
אא ٢٠٢א אאא אא
(indirect tensile strength) א אאא٢{٤{٣{٦ אאא א א
Wאאא
(splitting test) Kאאא א (flexure test)Kא א Wאאאא
E١
E ٣٠٠x١٥٠F א א א א א Kא Kאאאאא Kא،אאא ١٥{٦ Kאאאא Kאאא אא ٠{٠٤ ٠{٠٢ א א א א KאLMPa
KאאאאאאW١٥{٦
- ٨٢ -
אא ٢٠٢א אאא אא
Kאא WאEσtFאא
2P
σt = πLD אWp ١٥٠ZאאWD
٣٠٠ZאאWL
Wאא σt =
2P πa 2 KאZa
אא % ١٥אאאא Kאאא Kאאא١٦{٦
א אאאW١٦{٦ Kאא
- ٨٣ -
אא ٢٠٢א אאא אא
Wאא
E٢
א א E١٧{٦ F א א א ٥٠٨x١٥٢x ١٥٢ א א.(ASTM C78) א
(BS:1881)Kאא٧٥٠x١٥٠x١٥٠א
אאאאאW١٧{٦ Kא Kאאאא Kאאא K٢٨אא MPa ٠{١٠ ٠{٠٢אאא Kא - ٨٤ -
אא ٢٠٢א אאא אא
K١٨{٦אא אא אאK אא
אKEmodulus of ruptureFאKאאא KE١٨{٦F א א א א
KE١٩{٦F
ERF א ،E١٨{٦ F א א א
Kא
Pl R = bd 3 א אWp אאWl אאWd א Wb Wאאאאאא
3Pa R = bd 3 KאאZa א אKאאאא Kאאאאא - ٨٥ -
אא ٢٠٢א אאא אא
P/2
d
P/2
d
d
4d M=
V=
ﻋﺰم اﻻﻧﺤﻨﺎء
pd 2
ﻗﻮة اﻟﻘﺺ
p 2
KאאאW١٨{٦ P
d M=
V=
pd 2
d ﻋﺰم اﻻﻧﺤﻨﺎء
ﻗﻮة اﻟﻘﺺ
p 2
KאאאאW١٩{٦
- ٨٦ -
אאא ã¹]<gè…‚jÖ]æ<ËÖ]<Üé×Ãj×Ö<íÚ^ÃÖ]<í‰ ‰ö¹] אאאא
א
אאאא
אאאא
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אא ٢٠٢א אאאא אא
Wאא Kא א א א א א א א
Kא א א א א אא
א אא אאאאא Kא Wאא Wאאאאאאאא Kאא • Kא • K • Kא• א Kאא • Wאאא Kאאאאא Wאאא Kא Wאא Kאאאאאא
- ٨٧ -
אא ٢٠٢א אאאא אא
WK١{٧ אאאאאא
Wאאא
EאאFKא
-
א
-
Kאאאאא
-
אאאאאאאא
אאאאאאאאK W Kאאא
-
Kאאא
-
Kאאאא
-
ECore testF Wאא אK٢{٧
אאאא אאאKא(potential strength)א K٢٨אא Wאאאאאא א א א Kא - ٨٨ -
אא ٢٠٢א אאאא אא
WאK١{٢{٧ Wאא WE١ (beams) Kאאא (walls)אא (columns)א א KאאאE٢ Kא٣٠٠אאאאאאW
300 ﻣﻢ
،E١{٧ F א א א א א .(covermeter)אאאE٢{٧Fא
ﺣﺪﻳﺪ اﻟﺘﺴﻠﻴﺢ ﻗﺎﻟﺐ اﻟﺨﺮﺳﺎﻧﺔ ﻣﻦ ﻋﻤﻮد
KאW١{٧
- ٨٩ -
אא ٢٠٢א אאאא אא
K(covermeter)אאאאW٢{٧ Kאאא ١٠٠א אK٢٥אאאאא١٥٠אאא K٢{٠١אא Kאאאא
WאK٢{٢{٧ אE٣{٧Fאא ،א א (high alumina cement) א א KE٤{٧Fאאא
- ٩٠ -
אא ٢٠٢א אאאא אא
KאאW٣{٧
אW٤{٧
- ٩١ -
אא ٢٠٢א אאאא אא
Wא K٣{٢{٧ אא .اﻟﺜﺎﻧﻴﺔ/MPa ١٥אKאאא
Kאאא،אא WאאאאK٤{٢{٧ Kאא
E١
אאא E% ١٥J ١٠Fאאאא Kאא Kאא
E٢
א א Kא א א א א א
٥{٧(correction factor)
ﻣﻌﺎﻣﻞ اﻟﺘﺼﺤﻴﺢ
1
0.9
0.8 1
1.2
1.4
1.6
1.8
2
.ﻧﺴﺒﺔ اﻹرﺗﻔﺎع إﻟﻰ اﻟﻘﻄﺮ
KאאW٥{٧ - ٩٢ -
אא ٢٠٢א אאאא אא
Kא
E٣
א אאאאאא % ٨א KאאאאKא Kאא
E٤
Kא א KאאK%١٠אאאא Kאא • ⎛ φr h ⎞ 1.0 + 1.5⎜⎜ φ x l ⎟⎟ ⎝
c
⎠
W א W φr א W φ c א א:h א :l Kא • ⎛ ∑ (φr .h ) ⎞ ⎜ ⎟ + 1 . 0 1 . 5 ⎜ φ .l ⎟ c ⎝ ⎠
KאאK٥{٢{٧ אא אאאא אאאא Wא Kא - ٩٣ -
אא ٢٠٢א אאאא אא
Kא Kאאאא אאאאאאא W(concrete Society Report) Wא • 3.25 f λ 1. 5 + 1 / λ
Zאא
Wא • 3.00 f λ 1. 5 + 1 / λ
Zאא W Kא W f λ אא W λ
א א א א א א
W(concrete Society Report)א Wא •
2 .5 f λ 1. 5 + 1 / λ
Zאא
Wא • 2 .3 f λ 1. 5 + 1 / λ
Zאא
- ٩٤ -
אא ٢٠٢א אאאא אא
ENon-destructive TestFWאאK٣{٧
אא Kא א א א אא Wאא
penetration resistanceאJ Schmidt hammerJ
pull out test אאJ ultrasonic pulse velocity test אאאJ radioactive methodsאJ penetration testWאK١{٣{٧
٦{٧Kא אאא Windsor probeא KאאאKאא Kאא
(Windsor probe)אW٦{٧ - ٩٥ -
אא ٢٠٢א אאאא אא
pull out testWאאK٢{٣{٧ א א א א E٧{٧ F א א א(fp)אא
f
p
=
F A אאאZF KאאZA
(F) א K א (fp) א E٨{٧Fא
אאW٧{٧
- ٩٦ -
אא ٢٠٢א אאאא אא
(MPa)ﻣﻘﺎوﻣﺔ ﻗﺎﻟﺐ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
70 60 50 40 30 20 10 0 0
10
20
30
40
50
(kN) ﻗﻮة اﻹﻗﻼع
Kאא:٨{٧
Schmidt hammerWאאאאK٣{٣{٧ (non-destructive testing)אאאאא א אאKא
K٩{٧Kאא
KW٩{٧ - ٩٧ -
אא ٢٠٢א אאאא אא
KE١٠{٧F (plunger)אא Kא א אא
E١١{٧Fאאאאא
KאW١٠{٧
(MPa) ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
50
40
30
20
10 10
20
30
40
50
رﻗﻢ اﻹرﺗﺪاد
KאאאאW١١{٧ - ٩٨ -
אא ٢٠٢א אאאא אא
אאאאאא א א K Kא א א אא ١٢ ١٠ Kאאאאאא
א K א א א א
KE١٢{٧FאאאEF
K اﻟﺨﺮﺳﺎﻧﺔ
اﻟﺠﻬﺎز
اﻟﺨﺮﺳﺎﻧﺔ
اﻟﺨﺮﺳﺎﻧﺔ
اﻟﺠﻬﺎز EaF
اﻟﺠﻬﺎز
EbF
EcF
(c)>(b)>(a)אא KאאW١٢{٨ א א א א א Kאא (Ultrasonic pulse velocity)אאאK٤{٣{٧ (T) אE١٣{٧Fא אא .%١אאE١٤{٧Fאא Kא אא E١٤{٧Fאא א אא (a) אא
K(c)(b)
- ٩٩ -
אא ٢٠٢א אאאא אא
KאאW١٣{٧
اﻟﻤﺮﺳﻞ
اﻟﻤﺮﺳﻞ
L
اﻟﻤﺴﺘﻘﺒﻞ اﻟﻤﺴﺘﻘﺒﻞ א א:(a)
אא א:(b) اﻟﻤﺮﺳﻞ
اﻟﻤﺴﺘﻘﺒﻞ
L
א א:(c) KאאאW١٤{٧ - ١٠٠ -
אא ٢٠٢א אאאא אא
K(V)א V=
L T
EFאZL EאFאZT Wא(E)אא(V)א V =
E
ρ
Kא = ρ Kאאא א א א (pulse velocity) א א
אאאKE١٥{٧Fא Wאא Kא Kאאא Kא Kא -
Wאא KEאFאאא(cracks) Kאא Kאא - ١٠١ -
אא ٢٠٢א אאאא אא
(MPa) ﻣﻘﺎوﻣﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻟﻠﻀﻐﻂ
60 50 40 30 20 10 0 4000
4500
5000
5500
(ﺳﺮﻋﺔ اﻟﻨﺒﻀﺎت )م\اﻟﺜﺎﻧﻴﺔ
אאאאW١٥{٧ Kא
(loading test) WאK٤{٧ אאאאא FאאאאאאKEאאאאF KאKאE Wאאאאא Kאא Kא - ١٠٢ -
אא ٢٠٢א אאאא אא
Wאא EACIFאאאKאאא ٢٨ אא א (scaffolding) K ٥٦ א
אאאKאא
Kאא
Wאא(BS8110)אאא א١{٢٥Hאא :(a)
EאHאאF١{٢٥ :(b) אאE١٦{٧F(deflections)אאאאK٢٤אא Wאא(cracks)א f1ZאאWא • f2ZאאW٢٤ • f3ZאאWא • f4ZאאWא٢٤ • 40l 2 〉 f2 h
א
Kאאא EFאWl EFאWh - ١٠٣ -
אא ٢٠٢א אאאא אא
٢٤ (f2)א א % ٧٥א،א Kאא،א reinforced concrete א
f 2 − f3 × 100〉 75% f2
prestressed concreteא
f 2 − f3 × 100〉85% f2
אאאא אא Kאאא ﺳﺎﻋﺔ٢٤ ﺗﺜﺒﻴﺖ اﻟﺤﻤﻞ ﻟﻤﺪة
ﺗﺤﻤﻴﻞ اﻟﺤﻤﻞ
رﻓﻊ اﻟﺤﻤﻞ
اﻹﻧﺤﺮاف ﺑﻌﺪ رﻓﻊ اﻟ ﻞ اﻹﻧﺤﺮاف
KאאאאאW١٦{٧ - ١٠٤ -
אא ٢٠٢א אאאא אא
אא א אא E١٨{٧ א F א א KE١٧{٧ Fא
Kא(l/4)(l/2)אאאאאא ﺣﻤﻞ ﻣﻮزع ﺑﺎﻧﺘﻈﺎم
رآﻴﺰة
رآﻴﺰة ﻣﻘﻴﺎس اﻟﻘﺮص
l אאאW١٧{٧
אW١٨{٧ - ١٠٥ -
אא ٢٠٢א אאאא אא
KאאW١ K ١٤٠א ١٠٠א
kN١٨٠ZאK٢٥אאא K٢ 7850 = π (100) Zאא 2
4
MPa 22.93 =
1.4 =
180000 P = Zא 7850 A
140 Zאא 100
MPa 23.82 =
2.3 × 22.93 1 Wאאאא 1.5 + 1.4
MPa 31.06 =
3.0 × 22.93 1 Wאא 1.5 + 1.4
KאאW٢ K ١٣٠א ١٠٠א Kאא ٢٥אאא
K٢٠אאאKא٤٥ kN٢١٠Zא K٢ 7850 = π (100) Zאא 2
4
MPa 26.75 =
1.5 =
210000 P = Zא 7850 A
130 Zאא 100
- ١٠٦ -
אא ٢٠٢א אאאא אא
MPa 29.47 =
2.5 × 26.75 1 Wאאאא 1.5 + 1.3 25 45 ⎞ × ⎟ Wאא ⎝ 100 130 ⎠
1.13 = 1.0 + 1.5⎛⎜
MPa 33.30 = 29.47 × 1.13 Wאאאא MPa 38.31 =
3.25 × 26.75 1 Wאא 1.5 + 1.3
MPa 43.29 = 38.31× 1.13 Wאאא
- ١٠٧ -
אא
٢٠٢א
א
אא
אKאאKאKאא،אא
K١
K٢٠٠٠Kא K١٩٩٠KאKא،א
K٢
K١٩٩٩KאאאKאK
K٣
K١٩٨٦KאאKא،אא
K٤
K١٩٩٢KאKא
K٥
K١٩٩٢KאאאKא
K٦
7.
Neville A. M. and Brooks J. J. Concrete Technology. London, Longman, 1990.
8.
Neville A. M. Properties of Concrete. London, Longman, 1996.
9.
Pigeon M and Plean R. Durability of concrete in cold climates, Spon Press, 1995.
10. Maier. High Performance Concrete, Spon Press, 1992. 11. Soroka L, Concrete in Hot Environments, Spon Press, 1993. 12. Richardson. M. G. Fundamentals of durable reinforced concrete, Spon Press, 2002. 13. Illston J. M. and Domone P. L. J. Construction Materials, Spon Press, 2001. 14. ACI-committee 305R-77 (Revised 1982), Hot-weather concreting, Part 2, ACI Manual of Concrete Practice, 1984. 15. ACI-committee 306R-78, Cold-weather concreting, Part 2, ACI Manual of Concrete Practice, 1984. 16. Concrete Society, Concrete core testing for strength, technical Report No. 11, Cement and Concrete Association, London, 1976. 17. Sidney Mindess and Francis Young J. Concrete. Prentice Hall, 1981. 18. Bungey J. H. The Testing of Concrete in Structures, Surrey University Press, 1982. 19. Concrete Society, Pumping Concrete, Report No. 1, Cement and Concrete Association, London, 1984. 20. Colin Deacon R. Concrete Ground Floors. Their design, construction and finish. Cement and Concrete Association, London, 1974. - ١٠٨ -
אא
٢٠٢א
א
אא
21. Kosmatka S. H. and Panaresse W. C. Design and Control of Concrete Mixtures. Portland Cement Association, Illinois, 1994. 22. Shirley D. E. Introduction to Concrete. Cement and Concrete Association, London, 1984. 23. Kirkbride Tom. Review of Accelerated Curing Procedures. Cement and Concrete Association, London, 1971. 24. Concrete Society, Guide to Chemical Admixtures for Concrete, technical Report No. 18, Cement and Concrete Association, London, 1980. 25. Boukendakdji M. Mechanical Properties and Long-term Deformation of OPC and Slag Cement Concretes, PhD Thesis, Leeds University, 1990.
- ١٠٩ -
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