TQP-Trust for the Quality of Products

Name: TQP-Trust for the Quality of Products
Address: Bchamoun Main Road, Al Hanaa Bldg. , Basement Floor, Bchamoun, 00000, LB
Telephone: +96125814012

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TQP-Trust for the Quality of Products

TQP is a material testing & consulting company located in Lebanon, working locally and abroad. tel: 0096125814012/13/77

11/10/2023

Zinc coating or galvanization is tested at TQP for a variety of products, such as, plates, tubes, fences, brackets, angles, beams, wires and wire meshes, etc.

Galvanization is a manufacturing process where steel or iron is coated with zinc. There are several galvanizing methods, with the most common method being hot dipped galvanization.
Galvanization thickness in tested chemically in accordance with international standards (like ASTM A90, EN ISO 1460), then classified depending on the product type and the galvanization method using international specifications (like ASTM A53, A653, A123, B633, BS EN 10240). The higher the zinc thickness, the higher the classification grade, and the longer the service life of zinc protection.

Although iron is protected by zinc coating, sometimes called scarifying metals, but to save it and prolong its life, zinc itself has to be protected from aggressive chemicals like bleaching powder, acids, acidic foods (like tomato and some fruits), strong bases (like caustic soda drain cleaner), chlorine (swimming pool water), aluminum cleaners, road salts (chlorides), quicklime (Calcium hydroxide), fertilizers, etc.

It is worth to note that the service life of zinc protection is extended at low temperature; it is also higher in hard water rather than in soft water. Hard water, rich in calcium and magnesium, can develop protective scales on the galvanized coating that act as a barrier to corrosive substances, while soft water, rich in oxygen and carbon dioxide, enhances the corrosion of the galvanized steel.

04/10/2023

Bitumen is a mixture of organic liquids that is black, highly viscous, sticky product used for paving roads, waterproofing products (used in sealing roofs).
There are many tests that can be conducted by TQP to check the quality of bitumen. Such tests are:

Flash Point…provides information required for safety in handling;
Solubility…indicates the purity (lack of contamination) of the product;
Viscosity…indicates the degree of fluidity at a standard temperature.
Penetration…identifies the grade of the bitumen.

Other tests are used to classify the bitumen for specification purposes, such as softening point, distillation, storage stability, etc. are also carried out at TQP.

02/10/2023

TQP is concerned about safety in buildings.

Flammability test is among the essential safety tests to be conducted on construction material used in walls, floorings, ceilings, finishing, sealing, insulation, lightning, etc.

Although manufacturers are required to supply certified construction materials that satisfies the international flammability requirements; contractors/ end users must in turn look for certified flame resisting products, plus regularly subject to testing as per EN 11925, DIN 4102, NF P92-507, BS 476, or equivalent standard.

Many accidents are regularly reported due to the uncontrolled usage of construction material with high ability to combustion, some of them were catastrophic like what happened in Hamdanieh village in Iraq last September-2023.

25/09/2023

Dimension stones, whether local or exported, are subject to extensive variations in their characteristics. TQP is conducting all necessary testing for verification or classification of dimension stones in accordance with international standards such as:
- ASTM C568: Classification of limestone dimension stone
- ASTM C615: Classification of granite dimension stone
- ASTM C503: Classification of marble dimension stone
- ASTM C616: Classification of quartz-based dimension (e.g., Sandstone)
- ASTM C1364: Classification of architectural cast stone (BS EN 15286 Agglomerate stone)
- ANSI A137: Specification of glass mosaic tile
- And many other stones like travertine, serpentine, etc.; always in accordance with international standards.

Among the most commonly conducted tests at TQP are compressive strength, absorption, specific gravity, modulus of rupture, abrasion resistance, and flexural strength.
Other necessary tests for rock and tile, requested for specific purposes, are also conducted at TQP, such as Chemical resistance of tile whether glazed or unglazed, Strength of Stone Anchorages (résistance aux attaches), Resistance to freeze and thaw, Static coefficient of friction, Load test applied on tile as constructed, Dynamic modulus of Elasticity, Thermal shock resistance, coefficient of thermal expansion, resistance to salt crystallization, etc.

21/09/2023

TQP can inspect buildings/structures damaged by fire. The repair solution could range from aesthetic to demolition depending on the inspection findings.

First, visual assessment is made to estimate the severity of the damage and identify the necessary testing. At this stage, focus is made on the duration of fire and it was concentrated; presence of crack, with depths and orientations within slabs and bearing elements; deflection of slab, beams, etc.; spalling of concrete covers above steel of reinforcement; bending of steel rebars or steel structures; conditions of joints, sealant, and water proof membranes; etc.

Moreover, various complementary destructive and non-destructive testing can be conducted, such as:
1- Coring and compressive strength at several elements, including those with little exposure to fire for comparison;
2- Carbonation test to identify the depth of de-alkalizations due to CO2 pe*******on. This is recommended at the main burned area and close surroundings elements affected by smoke.
3- Testing the affected steel of reinforcement for its compliance with international standards.
4- Ultrasonic pulse velocity measurements for the quality of concrete.
5- Other necessary testing could be made, like studying the properties of any bituminous membrane (tensile, elongation, puncture, tear resistance, etc.); pull off test of plaster to measure its adherence to the concrete substrate; etc.
6- Based on the above test results, load test as per ACI code could be also conducted.

19/09/2023

TQP can conduct the necessary chemical and mechanicals tests (tensile strength, bend/bend & re-bend test) related to steel of reinforcement.

Tensile strength of rebar is tested using a 600KN fully automatic universal testing machine. Yield strength and elongation are automatically reported.

Test results are then analyzed for their compliance to international standard specifications (European, American, etc.)

15/09/2023

TQP load testing of manhole covers and frames, up to 100 tons.

Testing manhole covers is very important since using inappropriate covers or frames could be fatal.

13/09/2023

IK and IP ratings are critical for street, roadway and other lighting products. IK describes the degree of Impact Protection and is tested according to IEC 62262, while IP stands for Ingress Protection and is tested as per IEC 60598-1.

IK ratings are defined as IKXX, where “XX” is a number from 00 to 10 indicating the degrees of protection as explained in the picture below (source: https://ektor.com.au/)

IP ratings are defined as IPXX where the first X represents the degree of protection against solid objects and the second X represents the degrees of protection against water. A lighting product with a rating of IP67 is dust-tight and protected against temporary immersion as described in the IP rating chart below. (source: https://clarionuk.com/)

Another concern in lighting products is the glow-wire test, it measures the resistance of a product to flammability due to glowing wires inside component assemblies, which can occur as a result of overloading and produce extreme heating energy.

11/09/2023

Strength of hardened concrete is one of the essential tests requested for old buildings, or new structures under suspicion. It involves the following main steps:

1- Scanning to avoid cutting rebars while coring
2- Coring using the appropriate diamond bit
3- Registering defects, if any.
4- Surfacing cores before crushing
5- Capping with neoprene and crushing at specific rate
6- Other necessary testing, like depth of carbonation, deicing salts, cement content, etc.

07/09/2023

TQP provides consultancy and training to companies looking for Certification to ISO 9001 or labratories seeking Accreditation to ISO 17025.

07/09/2023

TQP is specialized in testing construction and industrial raw materials, namely concrete, tiles, limestone, cement, asphalt, bitumen, soil, aggregate, water, admixtures, steel, alloys, etc.
TQP uses chemical and physical testing, either destructive or non-destructive, to verify the quality of your product.

Address

Bchamoun Main Road, Al Hanaa Bldg. , Basement Floor
Bchamoun
00000

Telephone

+96125814012

Website

http://www.tqp-lb.com/

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