cmtt

• Construction materials


  Materials, supplies, fixtures, equipment, or articles to be utilized or consumed during construction or incorporated into construction work pursuant to a written construction contract
• Construction aggregates

  • Sand
  • Gravel
  • Crushed stone
  • Slag
  • Recycled concrete
  • Geosynthetic aggregates
• Steel


  A metal alloy of iron and carbon, often with other alloying materials, to make it stronger and more fracture-resistant than iron
• Cement


  Finely ground powders that, when mixed with water, set to a hard mass and are used as a binding material in building and civil engineering construction
• Bitumen


  A black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation, used for road surfacing and roofing
• Concrete


  A composite material made of fine and coarse aggregate bound together by a liquid binder such as cement that hardens or cures over time
• Asphalt


  A mixture of aggregates, binder and filler, used for constructing and maintaining roads, parking areas, railway tracks, ports, airport runways, bicycle lanes, sidewalks and also play- and sport areas
• Masonry


  Construction using individual units (such as bricks or hollow blocks) bound together by some kind of mortar, with the strongest and most commonly used unit being a concrete block, which may be reinforced with steel
• Lumber


  A wood product, sawn and shaped from timbers of harvested trees, assigned a grade which establishes a measure of consistency in the final products produced by mills
• Glass


  A durable but brittle material valued for its optical properties such as its ability to refract, reflect and transmit lights
• Ceramics


  A broad category of hard inorganic material manufactured using minerals, commonly used in countertops, sinks, tubs, bathrooms and kitchen tiles
• Rocks/Stone


  Solid cumulative of minerals located in the Earth's lithosphere, used for various purposes in construction such as dam, railway ballast, building, and skyscraper construction
• Major categories of materials testing

  • Mechanical testing
  • Testing for thermal properties
  • Testing for electrical properties
  • Testing for resistance to corrosion, radiation and biological deterioration
  • Non-destructive testing
• Tests carried out on bitumen

  • Determining bitumen content
  • Determining flash and fire point
  • Determining penetration
  • Determining softening point
  • Determining specific gravity
  • Determining ductility
  • Determining marshal stability
• Tests carried out on cement

  • Fineness Test
  • Soundness Test
  • Consistency Test
  • Setting Time
• Tests carried out on fresh concrete

  • Slump Test
  • Compacting Factor Test
  • VeBe Test
  • K-Slump Test
• Tests carried out on steel reinforcement

  • Tensile Strength Test
  • Bend Test
  • Re-bend Test
  • Shear Test
  • Brinell Hardness Test
  • Impact Test
  • Torsion Test
• Tests carried out on hardened concrete

  • Compression Strength Test
  • Flexural Strength Test
  • Rebound Hammer Test
  • Ultrasonic Pulse velocity Test
• Vicat Needle Apparatus


  A penetration device used in testing of hydraulic cements and similar materials to determine their normal or standard consistency, initial setting time and final setting time
• Flow Cone Apparatus


  Used for viscosity and fluidity determination of mortars, muds, grouts, fluid materials
• Flame Photometer


  Used to determine the alkali content of cement
• Automatic Mortar Mixer


  Expressively designed for the efficient mixing of cement pastes and mortar, with two automatic sequences of mixing cycle
• Bulk Density of Cement Test


  Apparatus used for the measurement of the apparent density (bulk density) of powder and non-cohesive materials
• Le Chatelier Mold


  Used for determining the expansion of cement, consisting of a spring tensioned split cylinder with indicator stems
• Le Chatelier Flask


  Used to determine the specific gravity of hydraulic cement and lime, a glass flask with graduated neck
• Compression Testing Machine


  A hydraulic, electrically operated unit, designed for conducting compression tests on concrete specimens, rocks and various
• Flow Table


  Used to determine the flow of concrete, consisting of a flow table, stainless steel flow mold, and tamping bar
• Flexural Testing Machine


  Designed to meet the need for reliable and consistent testing of flexural test on standard concrete beams, transverse test on kerbs and flagstones, indirect tensile tests on concrete and interlocking pavers
• Mortar Mixer


  Used for mixing cement pastes, mortars and pozzolana
• Gauging Trowel


  A round-nosed trowel used for mixing mortar and applying small amounts in confined areas, also used to replace crumbled mortar and to patch concrete
• Vee-Bee Consistometer


  Used for workability as well as consistency for fresh concrete, helps the operator to find out slump values and Vibration Table with container and acrylic disc is used to find out workability of concrete expressed in Vee Bee degrees
• Slump Test Apparatus


  Used for the determination of the consistency of freshly mixed concrete, where the maximum size of the aggregate does not exceed 38mm
• Beam Mold


  For casting concrete specimens for flexure tests, made of cast iron with machined flat faces
• Cube Mold


  The standard size of cube is 150 mm, not suitable for concrete having a nominal maximum aggregate size exceeding 40 mm
• Cylindrical Mold


  Hard plastic and steel cylinder molds manufactured in accordance with dimensions and tolerances stated in the related standards, designed to be durable, corrosion resistant and easy to clean
• Curing Tank


  Specimens must be cured at a stable temperature under water to ensure consistent test results
• Laboratory Oven


  Designed for drying, baking, conditioning and moisture determination
• Muffle Furnace


  Designed for higher temperature heating, aside from the laboratory oven
• Sieve


  A device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net or metal
• Sieve Shaker


  Agitates a stacked series of test sieves to efficiently separate materials of all different types, saving time and effort and improving accuracy for particle sizing operations