ค้นเจอ 221 รายการ

คำศัพท์ที่เกี่ยวข้องกับ "concrete"

คลิกที่แต่ละคำเพื่อดูรายละเอียด

Saponification

(Concrete Engineering) The deposit of a gray scum or gray dust on the inside surface of a subgrade wall or floor; as the result of moisture moving through the concrete and washing certain chemicals from the concrete mass.

Cement Content

(Concrete Engineering) A quantity of cement contained in a unit volume of concrete or mortar, ordinarily expressed as pounds, barrels, or bags per cubic yard.

Holding Period Period

(Concrete Engineering) In the manufacture of concrete products, the period between completion of casting and the introduction of additional heat or the steam curing period

Retempering

(Concrete Engineering) The addition of water and remixing of concrete which has started to stiffen: usually not allowed as it may affect the ultimate strength.

Calcareous

(Concrete Engineering) Containing calcium carbonate or, less generally, containing the element calcium.

Revibration

(Concrete Engineering) Delayed vibration of concrete that has already been placed and consolidated. Most effective when done at the latest time a running vibrator will sink of its own weight into the concrete and make it plastic and workable again.

Entrained Air (See air entrainment)

(Concrete Engineering) Microscopic air bubbles intentionally incorporated in mortar or concrete, to improve workability and durability (usually imparting a higher degree of resistance to freezing and thawing).

Colloidal

(Concrete Engineering) A gel-like mass which does not allow the transfer of ions

Sulfate Attack

(Concrete Engineering) Deleterious chemical and/or physical re-action between sulfates in ground water or soil and certain constituents in cement, which result in expansion and disruption of the concrete.

Flexural Strength

(Concrete Engineering) A property of a solid that indicates its ability to withstand bending.

Portland Cement (ASTM C 150)

(Concrete Engineering) The product obtained by pulverizing clinker consisting essentially of hydraulic calcium silicates.

Vicat Apparatus

(Concrete Engineering) A penetration device used to determine the setting characteristics of hydraulic cements.