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Porthold Masonry Cement (PMC) is a cement made at the PPC Bulawayo Factory from high quality raw materials. Clinker being inter-ground with gypsum and an approptiate amount of extender.
PMC is a masonry cement type MC 22,5. Typical applications are mortar, plaster, masonry products, paving, precast products and soil stabilisation. PMC is a tried and tested product that has been engineered to achieve a consistent and appropriate performance. The cost of PMC has been optimised for a broad range of applications, whilst maintaining the appropriate levels of quality.
PMC is a cement designed to meet the type MC 22,5 strength class of SAZS ENV 413-1 for Masonry Cements and is identified as:
Typical technical data is supplied below. Further technical information can be obtained from the Sales and Marketing telephone numbers listed above. PPC has comprehensively equipped chemical, cement and concrete laboratories and can supply specific information and assistance regarding cement and concrete technology.
|Chemical Composition||Typical Test Results||Specific Requirements|
|Sulphur Trioxide: %||1,90||3,0 maximum|
|Chloride: %||<0,02||0,1 maximum|
All % calculated by mass. Under the second table should be the following text: Please contact our toll-free help-line if actual figures are required.
|Physical Properties||Typical Test Results||Specification requirements
SAZS ENV 413-1
|Specific Surface (Blaine): m2/kg
Fineness: Residue on 212 pm screen: %
|Soundness: Le Chatelier Expansion (mm)||1||10 maximum|
Typical mortar prism results determined in
Early strength at 7 days(MPa)
Bulk density, aerated, kg/m3
Bulk density, as packed, kg/m3
|Approximate Volume: 50kg bag, litres||± 35|
IMPORTANT NOTE: The information and/or specifications contained herein are given in good faith as being true and accurate but no liability is accepted by PPC, its employees, distributors, representatives or agents, for any loss or damage, direct or indirect, resulting from using the information, following the specifications or adopting recommendations and/or suggestions as actual conditions of use are beyond its control. This data sheet was published in November 2006.
Bulk storage silos should be inspected on a regular basis to ensure that the inspection hatch seal is watertight and filters are clean and unblocked. Cement bags are not weather-proof and should be stored under cover, off the ground to a maximum height of 12 bags.
Bags – 50 kg Polypropylene bags
(Please note the hood is shower-proof NOT waterproof)