FREQUENTLY ASKED QUESTIONS
Membership in the Trade Association shall be limited to entities engaged in the business of integrated clinker and cement manufacturing in the Philippines who remain in good standing, as may be determined and/or assessed by the Board of Trustees, and such individuals representing the qualified member to the Board of Trustees.
ASTM C219-20a defines Portland cement as a hydraulic cement produced by pulverizing clinker, consisting essentially of crystalline hydraulic calcium silicates, and usually containing one or more of the following: water, calcium sulfate, up to 5% limestone, and processing additions.
The currently available products in the Philippines are Portland Cements, Blended Hydraulic Cements, and Masonry Cements.
DTI-BPS certification of products uses the following test specifications:
Portland Cement: PNS 07 Portland Cement -Specification
Blended Cement: PNS 63 Blended Hydraulic Cements – Specification
Masonry Cement: PNS ASTM C91 Standard Specification for Masonry Cement
The corresponding ASTM test specifications are the following:
Portland Cement: ASTM C150 Standard Specification for Portland Cement
Blended Cement: ASTM C595 Standard Specification for Blended Hydraulic Cements
Masonry Cement: ASTM C91 Standard Specification for Masonry Cement
The physical parameters of cement are tested using the ASTM reference test methods. The chemical parameters of cement are tested using the ASTM reference methods (for %LOI, %moisture, %CO2), XRF-fused bead method (%SiO2, %Al2O3, %Fe2O3, %CaO, %MgO, %SO3, %Na2O, %K2O, %TiO2 and %P2O5), British Standards method (%Free CaO), and Japanese Industrial Standards method (%Insoluble residue).
Sample must be packaged in moisture-proof airtight container, in a double-plastic bag, or in a sealed original cement bag. It must be properly labelled with its type and sample identification.
The customer must provide the following details:
a. Name of project/company/individual (owner of the test certificate)
b. Type and Kind of sample (including %composition for blended cement)
c. Test specification requirement
d. Sample identification
e. Date of sampling and person/company who conducted the sampling
f. Method of sampling if applicable
g. Person/Company who submitted the sample
CTC provides training for physical and chemical testing of cement and cement raw materials. This may be through a comprehensive two-week training or a refresher one-week training. CTC also offers training for Blaine apparatus calibration. A “Certificate of Attendance” is given upon completion of each course.
A letter of request for training must be submitted for approval by the management.