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On the other hand, in flawless specimens in series II, the corroded area C ra ck 3 8 450 10(20) 121 9 3 A D 1 3 R ei n fo r cin g s te el c o at ed w ith ex p o x y r es in ¥ õ 1 4 m m R o u n d b ar( A n o d e ) ¥ õ 1 4 m m S t ai n le s s st ee l(C a th o d e ) ratio of specimens with a W/C of 50% was higher with a cover depth of 20mm than 40mm.
Ohtsuki et al. reported that a lower W/C tends to lead to microcell formation while a higher W/C tends to lead to macrocell formation[4].

Hameed and A.L.
El Qada, Stephen J.

[9] Al-Sabagh A.M., Noor El-Din M.R., Morsi R.E., Elsabee M.Z., Styrene-maleic anhydride copolymer esters as flow improvers of waxy crude oil.

As pointed out by Gao et al. [8], however, a limited number of reports have presented data on the wear behavior of HPT-processed materials and many of these results appear to be conflicting [9-12].
Abd El Aal and H.S.

El-Sharkawy, and I.
Tin, et al., Review on the friction and wear of brake materials, Adv.

El-Shekeil, Y.
M., Jawaid, M., & Al-Shuja’a, O.

Recent study by Hernardez-Olivares et al [7] demonstrated that the curvature and risk of explosive spalling were reduced when rubber was filled in high strength concrete.
With the addition of rubber powder, the frost resistance of cement concrete can be greatly improved. 0 20 40 60 80 100 0 50 100 150 200 250 Fr eeze- t haw cycl e Rel at i ve dynami c modul us of el ast i ci t y R CF SF SC Fig. 2 Relative dynamic modulus of elasticity of rubber included concrete after freeze-thaw cycle test Permeability of Rubber-included Concretes The average water permeation height of specimens under 1.2 MPa pressure for 12 hours is given in Fig. 3 It can be seen that the average water permeation height of CF, SF and SC (the dosage of rubber is 7.5 % on the basis of cement mass content) is lower than that of R, which is the reference concrete without rubber.

Abd El-Wahab, A.A.
Al-Shemy, Characterization of microcrystalline cellulose prepared from lignocellulosic materials.

According to Sobolev et al. (2009) the function of nanoparticles can be briefed as below [8]: · fillers in empty spaces, · increase the hydration rate by acting as crystallization centers of hydrated products, · assist in the formation of Ca(OH)2 crystals and homogeneous clusters of C–S–H composition, · improve the structure of the zone in between aggregates and paste.
Abu el-hassan, Effect of using different types of nano materials on mechanical properties of high strength concrete, Constr.

[4] El-Hamdaoui A., Redondo-Nieto M., Torralba B., Rivilla R.
[21] Teiceira A.L., Aneliz de Bastos Andrade.