On the hygrothermal behavior of concrete containing glass powder and silica fume

Glass powder is known as a reactive material with silica content more than 72% and potentially considered as pozzolanic material. Moreover, it is known that binder containing silica fume 10-26% by weight increases the compressive strength of concrete. A low water to binder ratio is needed to increase the strength. In this paper, materials for making paste were analyzed for X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and reactivity. Composition of paste with the highest strength at 28 days was 93.26 MPa. Glass powders had higher reactivity compared to silica fume. Therefore, the recommended amount of glass powder to increase mechanical properties is 10 – 15% from cement weight and silica fume content are 40 – 60% from glass powder weight. A tendency of strength increasing after 28 days was found. In general, addition of silica fume to glass powder prolonged the initial setting causing the distance between initial and final setting time became closer.

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EXPERIMENTAL STUDY ON REPLACEMENT OF CEMENT USING SILICA FUME AND FINE AGGREGATE USING GLASS POWDER

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v7.i11.2020.368 ◽

2020 ◽

Vol 7 (11) ◽

pp. 285-293

Author(s):

Rajesh ◽

Kai. Kannan ◽

Jeevanesan R.

Keyword(s):

Experimental Study ◽

Compressive Strength ◽

Silica Fume ◽

Building Material ◽

Glass Powder ◽

Cost Effective ◽

Engineering Practice ◽

Fine Aggregate ◽

Conventional Concrete ◽

Test Result

Increase in population results in increase in usage of materials which cause much pollution to environmental surroundings if not disposed properly. Replacement of costlier building material by disposable waste material is one of best engineering practice in construction. In this paper replacement of cement using silica fume is done up to 20% and replacement of fine aggregate using glass powder is done up to 40% also silica fume and glass powder are replaced by 15% and 20%.compressive strength for replaced materials and conventional concrete is studied for 7thday and 28th day. From test result it is concluded that glass powder and silica fume is better effective replaceable materials which is cost effective and eco-friendly.

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Effect of glass powder and silica fume on mechanical properties and on alkali-silica reaction of recycled glass mortars

MATEC Web of Conferences ◽

10.1051/matecconf/202033001050 ◽

2020 ◽

Vol 330 ◽

pp. 01050

Author(s):

Zineb Douaissia ◽

Mouloud Merzoud ◽

Amar Benazzouk

Keyword(s):

Mechanical Properties ◽

Silica Fume ◽

Glass Powder ◽

Mechanical Performance ◽

Inhibitory Effect ◽

Mineral Admixtures ◽

Alkali Silica Reaction ◽

Recycled Glass ◽

Cement And Concrete ◽

Mass Expansion

In order to value glass in the production of cement and concrete. We have verified the effect of the progressive substitution of 10% to 50% of the volume of cement by glass powder and silica fume on the mechanical properties of hardened mortars, we have also verified their inhibitory effect of the Alkali Silica Reaction (ASR) by studying the variation of mass, expansion, opening and density of cracks as well as the loss of mechanical performance of mortars undergoes a test that accelerates the ASR by autoclave. We have concluded that the use of these mineral admixtures can improve the mechanical performance of mortars, and it can reduce expansions and mechanical performance losses due to ASR.

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