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VCAS Micron HS Pozzolan

Post Date : August 28
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VCAS- Micron HS (vitreous calcium aluminosilicate) pozzolan is a custom engineered

Micron HS Pozzolan

VCAS- Micron HS (vitreous calcium aluminosilicate) pozzolan is a custom engineered, high performance supplementary cementing material for use in GFRC, and any mortar or concrete products.

It is manufactured by heating a blend of ground scrap E glass fibers, lime, and alumina compounds to a molten state which is then solidified by quench cooling, processed, and ground to a fine white powder with highly-reactive pozzolanic characteristics.

The whole reason for the development of AR glass fiber was that E glass fibers, which have been available for many years as a reinforcing fiber for all types of resins and plastics, could not be used in Portland cement because the fibers would react with the alkalis in the cement, similar to what pozzolans do. By grinding up the E glass fibers this increases the reactivity many fold and makes the fine powder a genuine pozzolan.

VCAS-MicronHS is a white powder and is particularly suitable for use with white cement. In GFRC It is usually added at the amount of 25% replacement of the Portland cement. At this level it improves long term properties of GFRC and also significantly reduces efflorescence.

Company Related ProductsView the Seller's Products
AR Glass Fiber Products --Scrims

AR Glass Fiber Products --Scrims

AR Glass Fiber Products --Scrims

Strands designated by H in the product code.

Scrims are oriented continuous fiber favrics. The continuous fiver is usually yarn or roving. The continuous strands are not inter-woven but are laid over each other at ninety degree orientation and then a binder is applied which holds the fabric structure in place.

Various types of scrim are possible depending on the spacing between the strands and the number of parallel strands as shown in figure (1) below

Types of scrim for GFRC that are commercially available:

Nippon Electric Glass Co., Ltd.
906, Ima, Notogawa,
Kanzaki, Shiga, Japan
TEL: (81) 748 42 7530
FAX: (81) 748 42 3956
Date: June 24, 2002
Version 1
1. Code Name: TD 5X5
2. Product Specification:
Type of Glass Alkali Resistant Glass
Weight (g/m) 150±20
Width 1050 +10, -0
Tensile strength (N/25mm) more than 500
Length (m) 50 +1, -0

10X10 denotes
10mm (3/8 inch) spacing between strands.

Scrims are particularly used in conjunction with chopped strand reinforced mixes. When they are placed in the tensile regions of the product they care significantly increase the flexural strength of the composite.

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AR Glass Fiber Products --Roving

AR Glass Fiber Products --Roving

AR Glass Fiber Products --Roving

NEGA offers the following roving products.

offers the following roving products.

2500H103/DB - 5000H103/DB

For GFRC spray-up applications. The high integrity strand has excellent combination for stiffness for good lay-down and wet-out but is sufficiently soft to allow easy roll-out into corners and other mold details.


2500H350Y/DB - 5000H350Y/DB

Specialty roving, particularly designed for GFRC spray-up of primarily flat products. It is not usually suitable for spray-up of products with shape and molded features due to its high number of strands.



Designed for chopping into chopped strands that are suitable for premix applications. Especially suitable for direct chopping into mixer. The strands obtained from this roving are too stiff for spray-up applications.


Direct wind Roving (DWR)

DWR products are single end roving, designed mainly for weaving, scrim manufacture, filament winding, and pultrusion applications. They are not suitable for spray-up or chopped strand manufacture.

Four different tex roving are available: 310, 620, 1,100, and 2500. The product codes are: AR(tex)S-800,
e.g. AR310S-800

Explanation for product code format:

Example Code: 2500H350Y/DB

2500 = Roving Tex, H350 = Sizing Code, Y = Number of Filaments per Strand

(Z = 50 Filaments per strand, Y = 100 Filaments per Strand, X = 200 Filaments per Strand

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