OPC 43 grade Cement

43 grade cement is used in general Civil Engineering construction work i.e. brick masonry, plastering, pointing, flooring and in RCC Work etc. It is also used in the finishing of all types of buildings, bridges, culverts, roads, water retaining structures, etc. BIS Specifications (IS 8112-1989 for 43 grade OPC). on compressive strength levels.

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Detailed Description for OPC 43 grade Cement

OPC 43 is most commonly used cement for a wide range of applications. These Applications Cover Dry-Lean Mixes, General-Purpose Ready-Mixes, and High Strength Pre-Cast and Pre-Stressed Concrete. It provides High Strength and Durability for Buildings.This Binani OPC 43 Grade Cementt has a low heat of hydration and has a better work ability. It has a high resistivity against alkalies, sulphates, chlorides and chemicals. It has a high durability and provides great strength to the buildings. This cement can be used in all industrial and domestic spaces.

43 Grade Cement is the popular Brand Cement with low heat of hydration and long life of Concrete Structures.

ADVANTAGES

»     Develops early strength at 3 and 7 days with exceptionally high 28 days strength. Form work of slabs and beams can be removed much earlier which results in increased speed of construction.

»     Unbeatable consistency in quality gives better accountability for mix design

»     The higher characteristics strength of concrete leads to higher bond strength minimizing the possibility of slippage of reinforcements.

»     The dense and least permeable concrete prevents leakage / seepage problems.

»     Its high fineness offers better workability for a given water cement ratio ensuring very dense, compact and durable concrete.

»     Being the low alkali cement it provides insurance against alkali-aggregate reaction, this results in durable structures.

 

  IDEAL APPLICATIONS

»    Residential and commercial complex.

»    PCC solid and hollow blocks

»    Defense Constructions

»    Airport-Runways

»    Cement tanks

»    Asbestos cement products

»    Concrete roads and Ferro-cement concrete elements

 

 BIS SPECIFICATIONS AND SDCC NORMS OF 43 GRADE OPC

Sr.No. Description Unit Req. as per IS-

12269- 1987 SDCC Norms

A) CHEMICAL COMPOSITION

1. Insoluble Residues(IR) % 3.0 Max 2.0 Max.

2. Magnesium Oxide(MgO) % 6.0 Max 2.5 Max.

3. Sulphuric Anhydride(SO3) % 2.5 Max when C3A<5 & 3.0 Max when C3A>5 2.75 Max.

4. Loss on Ignition(LOI) % 5.0 Max 3.5 Max.

5. Lime Saturation Factor (LSF) % 0.66-1.02 0.89Min.

6. Alumina Iron ratio (A/F) % 0.66 Min. 1.10 Min.

7. Chloride (CI-) % 0.10 Max. 0.05 Max

B) PHYSICAL PROPERTIES

1. Specific Surface m2/kg 225 Min. 280 Min.

2. Soundness (Expansion)  

  a) By Le-Chatelier mm 10.0 Max. 3.0 Max.

b) By Autoclave%0.8 Max.0.2 Max

3. Setting Time  

  a) Initial Set Minute 30 Min. 70 Min.

b) Final SetMinute600 Max.250 Max.

4. Compressive Strength  

  a) 3 days MPa 23 Min. 32 Min.

b) 7 daysMPa33 Min.42 Min.

c) 28 daysMPa43 Min.55 Min.

Uses

43 grade cement is used in general Civil Engineering construction work i.e. brick masonry, plastering, pointing, flooring and in RCC Work etc.                                                                                                                                                                                                                       

Design Strength

Design Strength for 28 days= 430 kg/ sq cm

 FEATURES:

»    

Develops early strength at 3 and 7 days with exceptionally high 28 days strength. Form work of slabs and beams can be removed much earlier which results in increased speed of construction.

»    

Unbeatable consistency in quality gives better accountability for mix design

»    

The higher characteristics strength of concrete leads to higher bond strength minimizing the possibility of slippage of reinforcements.

»    

The dense and least permeable concrete prevents leakage / seepage problems.

»    

Its high fineness offers better workability for a given water cement ratio ensuring very dense, compact and durable concrete.

»    

Being the low alkali cement it provides insurance against alkali-aggregate reaction, this results in durable structures.

 

 

 

 

Specifications Required as per Bureau of Indian Standard (IS 8112:2013)

 

 

Physical Requirements

 

 

 

         

 

SI NO

CHARACTERISTICS

REQUIREMENT

1

Fineness, m2/kg, Min

225
370 for 43-S grade

2

Soundness:
a) By Le Chatelier method, mm, Max 
b) By autoclave test method, percent, Max

 

10


0.8

3

Setting Time:
a) Initial , min,Min

b) Final, min, Max


30
60 for 43-S grade
600

4

Compressive Strength, Mpa
a) 72 +/- 1h,Min
b) 168 +/- 2h,Min

c) 672 +/- 4h, Min
                     Max


23
33
37.5 for 43-S grade
43
58

 

 


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