Grasim Industries Ltd.

Khor, India

Grasim Industries Ltd.

Khor, India
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Das B.B.,Grasim Industries Ltd. | Pandey S.P.,Grasim Industries Ltd.
Journal of Materials in Civil Engineering | Year: 2011

The paper presents an investigation on the influence of the fineness of fly ash on the carbonation and electrical conductivity of concrete. Fly ash collected from three thermal power stations in India (with a Blaine's fineness of 200, 255, and 305 m2/kg, respectively) were used for this study. The study also involved three replacement levels (15, 25, and 35% of cementitious materials) for each fly ash sample. Accelerated carbonation studies were performed on specimens cured for 3, 7, and 28 days. The electrical conductivity of concrete was evaluated by measuring the charge passed in coulomb (per ASTM C1202) on 28-day-cured specimens. The test results indicated that the carbonation depth of concrete increased as fly ash replacement increased. However, the carbonation resistances of concrete increased with increased fly ash fineness. Furthermore, the carbonation resistance of concrete increased significantly with a prolonged curing time. The coulomb charge passed through the concrete at an age of 28 days was significantly reduced with the incorporation of fly ash, and the magnitude of reduction increased with increased in fly ash fineness and replacement level. © 2011 American Society of Civil Engineers.


Srinivasan S.,Queen's University of Belfast | Barbhuiya S.A.,Queen's University of Belfast | Charan D.,Grasim Industries Ltd | Pandey S.P.,Grasim Industries Ltd
Construction and Building Materials | Year: 2010

The zeta potential generated at the interface between cement particle surfaces adsorbed with superplasticisers have been studied using electroacoustic technique, which is capable of measuring zeta potential at high concentrated suspensions. The study has been undertaken to examine the differences in the magnitude of the zeta potential for ordinary Portland cement (OPC) and Portland pozzolanic (fly ash) cement (PPC) pastes along with the differential impacts of different types of superplasticisers on both the varieties of cement pastes. In the latter context, the effects of three different types of superplasticisers namely Ligno Sulphonate (LS), Sulphonated Melamine Formaldehyde (SMF) and Sulphonated Naphthalene Formaldehyde (SNF) have been specifically studied. The results show that the cement pastes with PPC shows better dispersion when compared with the OPC. The paper also endeavors to unfold the relationship and significance of cement interaction with three different superplasticisers. © 2010 Elsevier Ltd. All rights reserved.


Patent
GRASIM INDUSTRIES Ltd | Date: 2012-04-05

A process for manufacturing low-fibrillating cellulosic fibers by a dry-jet-wet spinning process is provided. The cellulose is treated with a specific ionic liquid based solvent to produce the said fibers with fibrillating index less than or equal to (3).


Patent
GRASIM INDUSTRIES Ltd | Date: 2012-04-05

The present invention provides a process for producing low fibrillating cellulose fibers by a dry-jet-wet spinning process wherein cellulose is treated with a solvent containing imidazolium ionic salt in a spinneret maintained at a temperature of 100-120 C. and the spun fibers drawn to the coagulation bath containing ionic salt with the draw ratio less than 5, to produce fibers with fibrillating index less than or equal to 3.


Trademark
Grasim Industries Ltd | Date: 2014-01-15

Raw fibrous textile materials. Textiles and textile goods, not included in other classes; bed and table covers. Clothing, footwear, headgear.


Trademark
Grasim Industries Ltd | Date: 2014-01-15

Textile Fibers and Cellulosic Fiber in the nature of raw textile fibers in international class 22.


Trademark
Grasim Industries Ltd | Date: 2014-02-17

Cellulosic fiber and textile fiber.


Trademark
Grasim Industries Ltd | Date: 2014-02-17

Cellulosic fiber and textile fiber.


Trademark
Grasim Industries Ltd | Date: 2014-02-03

Cellulosic fiber and textile fiber.


Trademark
Grasim Industries Ltd | Date: 2014-02-17

Cellulosic fiber and textile fiber.

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