Ready Mix Plaster (Standard) | 13.1 MPa | 40kg

Name: Ready Mix Plaster — Standard
Brand: SilicaMix
SKU: ready-mix-plaster-standard
Availability: InStock

Technical Specifications

Ready Mix Plaster — Standard at a glance

Full published specification. No gated download, no email request — the numbers your engineer needs are on this page.

Property	Value
Compressive Strength (28 days)	13.1 MPa
Pull-Off Adhesion (28 days)	1.39 MPa
Cement : Sand Ratio	1 : 4 (43-grade OPC)
Max. Aggregate Size	2.2 mm
Coverage	15 sq.ft per 40 kg bag @ 12 mm
Water Demand	6 litres per 40 kg bag (15% w/w)
Application Thickness	1st coat 8–12 mm, 2nd coat 6–8 mm (max 18 mm total)
Pot Life	1 – 1.5 hours
Initial / Final Setting Time	60 min / 360 min
Water Retention	97 – 98%
Dry Bulk Density	1700 – 1800 kg/m³
Wet Density	1900 kg/m³
Silt Content in Sand	Nil
Packaging	40 kg HDPE laminated waterproof bag
Shelf Life	9 months from date of sealed packaging
Standards Referenced	EN 998, IS 2250–1981, IS 1542

Values are typical and determined under standard laboratory conditions. Site results vary with substrate, ambient temperature and workmanship. Figures are from SilicaMix in-house laboratory testing. Download the technical data sheet for full test methods and referenced standards.

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Where It Is Used

Applications

Typical use cases where this product is specified on site.

Internal wall plastering on brick and block masonry
External wall plastering with weather-resistant finish
Ceiling and soffit plastering
RCC surface levelling before putty or paint
Multi-storey residential and commercial projects requiring consistent finish

Application Guidance

How to use Ready Mix Plaster — Standard

Follow this sequence for consistent results. Deviating on water ratio or open time is the most common cause of on-site failure.

1

Prepare the surface

Clean the substrate of dust, oil and loose material. Dampen the wall with water — the surface should be moist but not dripping.

2

Mix

Add 6 litres of clean water per 40 kg bag (15% by weight) and mix mechanically for 3–5 minutes to a uniform, lump-free consistency. Allow to stand 5 minutes, then remix briefly. Do not re-temper with extra water once it stiffens.

3

Apply

Apply to the wall in a 6–20 mm layer using a trowel or plastering machine. Level with a straight edge.

4

Finish

Float the surface once initial set begins. Cure as per standard practice for 3–5 days.

Common Questions

Frequently asked questions

The questions contractors and site engineers ask us most about this product.

How much area does one bag cover?

15 sq.ft per 40 kg bag at 12 mm thickness on a reasonably even substrate. Rougher masonry consumes more material.

How much water should I add per bag?

6 litres of clean potable water per 40 kg bag — 15% by weight. Exceeding this reduces compressive and bond strength.

What is the compressive strength?

13.1 MPa at 28 days, with pull-off adhesion strength of 1.39 MPa. Values are from in-house laboratory testing; see the technical data sheet for full data.

What thickness should be applied?

1st coat 8–12 mm, 2nd coat 6–8 mm, to a maximum total thickness of 18 mm. After the final coat, cure for a minimum of 3 to 5 days.

What is the pot life after mixing?

1 to 1.5 hours under normal climatic conditions. Do not re-temper with additional water once the mix begins to stiffen.

Which substrates can it be applied to?

Conventional concrete hollow blocks, AAC blocks, cellular concrete blocks, fly ash bricks, red clay bricks, cement blocks and bricks, and stone walls.

What is the shelf life?

9 months from the date of originally sealed packaging when stored in a cool, dry place away from moisture.