Portland cement
Portland cement
GOST-31108-2003, GOST 30515-97
brand ЦЕМ П\А-И 32.5 Н
brand ЦЕМ I 32.5 Н
brand ЦЕМ П\А-З 32.5 Н
Production cycle:
- production of limestone and timbers;
- crushing the limestone and timbers to obtain the premix;
- grinding the premix to produce the raw meal;
- burning the raw meal to produce the clinker;
- grinding the clinker with adding gypsum and mineral additives to obtain cement;
- shipment of the cement to consumers in bulk or in bags.
Application range:
The general-purpose Portland cement is mainly used in reinforced-concrete work, in performing foamed concrete, concrete, general-purpose construction work, as well as in laying walkway slabs and pavement plates.
Form and package:
The general-purpose Portland cement is packed either in polypropylene bags, which have a polyethylene insert, or in 50 kg multilayer paper bags, or shipped in bulk (in railway cars or cement trucks).
The general-purpose Portland cement is produced as per GOST-31108, GOST 30515, brands: ЦЕМ П\А-И 32.5 Н; ЦЕМ I 42.5 Н; ЦЕМ П\А-З 32.5 Н.
|
Cement strength class |
Compressive strength, MPa, at the age, days |
Initial setting time, min, no earlier than |
Soundness (expansion), mm, no more than |
|||
|
2 |
7 |
28 |
||||
|
No less than |
No more than |
|||||
|
32,5Н |
|
16,0 |
32,5 |
52,5 |
75 |
10,0 |
|
42,5Н |
10,0 |
|
42,5 |
62,5 |
60 |
|
White Portland cement
Standard: O’z Dst 761-96
Brand ПЦБ I 1-500\42.5
Brand ПЦБ I 1-400\32.5
Production cycle:
- extraction of limestone;
- crushing of limestone and kaolin and obtaining the premix;
- premix grinding with obtaining the raw meal;
- roasting the raw meal with obtaining clinker;
- grinding the clinker with adding mineral additives to produce cement;
- shipment of the cement to consumers in bulk or packaged.
Application range:
Production of dry construction mixes, and manufacture of concrete products.
Form and package:
The white Portland cement is placed into either polypropylene bags with a polyethylene insert or multilayer paper bags having a mass of 50 kg.
The white Portland cement is produced in compliance with requirements of the standard O’z Вые 761 for the brands: ПЦБ I 1-500\42.5 and ПЦБ I 1-400\32.5.
The strength of the White Portland cement meets the following requirements:
|
Brand and Strength class of Portland cement |
Compressive strength, MPa, at the age, days |
|||
|
2 |
7 |
28 |
||
|
No less than |
no more than |
|||
|
ПЦБ I 1-500/42,5 |
14,0 |
|
49,0 |
68,0 |
|
ПЦБ I 1-400/32,5 |
|
22,0 |
39,2 |
58,0 |
