Chloride attack is one of the most important aspects for consideration when we deal with the durability of concrete. Chloride attack is particularly important because it primarily causes corrosion of reinforcement. Statistics have indicated that over 40% of failure of structures is due to corrosion of reinforcement. This paper deals with an experimental study on the mechanism of chloride attack. Cement replacement by glass powder in the range of 5% to 40% in increments of 5% and EPCO KP-200 used in concrete as a corrosion inhibitor with 2% by weight of cement has been studied. Concrete produced by replacing 20% of cement by glass powder and the addition of 2% EPCO KP-200 by weight of cement not only increased strength but also reduced the ingress of chloride ion in concrete mass.

Concrete durability keeps on being a subject of contention among structure proficient, specifiers, Government instrumentalities, manufacturers and designers in spite of the huge changes made in the concrete code. This paper address two perspectives sulphate attack and chloride attack. The key science-related with all of these systems is spread out and isolated. The exploratory examination has been done with a cement substitute by the waste glass powder (WGP) in the arrangement of 5% to 40% in augmentations of 5% by weight of cement and EPCO KP-200 utilized in concrete as a consumption inhibitor with 2%, by weight of cement. Substitute of 20% cement by WGP and expansion of 2% EPCO KP-200 by weight of cement improved strength and durability as well as diminished the unit weight of concrete exposed to chloride or sulphate attack.

AbstractThis paper depends on a test examination on basalt fibres which started from volcanic shakes and were dissolved at high temperatures. These stones were accessible from the world’s profound hull. M30 evaluation of concrete was structured according to is 10262:2009 with basalt fibres. The fibres alongside mineral admixtures were utilized in three distinct extents, that is 0 %, 1 %, 2 %, 3 % by heaviness of cement. The goal was to decide the characteristics of fibre reinforced concrete with various fibre extents. The strength properties, for example, compressive strength, split tensile strength, flexural strength, shear strength and the impact on strength of concrete when it was unprotected to sulphate attack after stipulated extended ages of curing were contemplated and thought about. From the examination, it was discovered that the basalt fibre expanded the strength of concrete notwithstanding when unprotected to sulphate attack bit by bit when compared with consistent concrete. The ideal strength of concrete was accomplished with an enlargement of 2 % basalt fibre.

AbstractConcrete has today requesting execution prerequisites. The concrete strength emergency which started to pull in open consideration constrained the specialists to investigate the strength of concrete. Legitimate mix design and cautious development utilizing the best accessible materials and developments are significant to finish quality concrete structures. In the utmost current decade, the usage of Additional Cementing Materials (ACMs) has become a vital piece of high quality and superior concrete mix design. One of the significant changes is the presentation of small-scale innovation for concrete with fine and ultrafine cementitious materials. It is currently believable to achieve astounding molecule pressing and subsequently conform to the exhibition requests both in new and in the solidified states. In the prevailing examination the ACMs utilized are Fly ash, silica fume, Ground Granulated Blast Furnace Slag and Metakaolin which are prescribed by IS 456:2000 to recover the strength and durability of concrete. This paper shows the presentation of M30 to M90 grade of concrete with superplasticizer utilizing Rapid Chloride Permeability Test. Suitable mix of these ACMs can be utilized practically to advancement the chloride opposition of standard to high strength concrete mixes.

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