ผลการค้นหา

pack harden

แปลว่าทำให้พื้นผิวชั้นนอกของเหล็กอ่อนให้แข็ง

Carbonation

แปลว่า(Concrete Engineering) 1) Reaction between the products of portland cement (soluble calcium hydroxides), water and carbon dioxide to produce insoluble calcium carbonate (efflorescence). 2) Soft white, chalky surface dusting of freshly placed, unhardened concrete caused by carbon dioxide from unvented heaters or gasoline powered equipment in an enclosed space. 3) Carbonated, dense, impermeable to absorption, top layer of the surface of concrete caused by surface reaction to carbon dioxide. This carbonated layer becomes denser and deeper over a period of time. 4) Reaction with carbon dioxide which produces a slight shrinkage in concrete. Improves chemical stability. Concrete masonry units during manufacturing may be deliberately exposed to carbon dioxide after reaching 80% strength to induce carbonation shrinkage to make the units more dimensionally stable. Future drying shrinkage is reduced by as much as 30%.

Retardation

แปลว่า(Concrete Engineering) Delaying the hardening or strength gain of fresh concrete, mortar or grout.

Neat Cement-Paste

แปลว่า(Concrete Engineering) A mixture of water and hydraulic cement, both before and after setting and hardening.

Cure

แปลว่า(Concrete Engineering) Method of maintaining sufficient internal humidity and proper temperature for freshly placed concrete to assure proper hydration of the cement, and proper hardening of the concrete.

hard-drawn copper

แปลว่า(ไฟฟ้า) สายลวดทองแดงชนิดแข็ง ใช้ในการโทรศัพท์ และสายโทรเลข ในส่วนที่ต้องใช้สายมีความต้านทานความตึงได้สูง

Hardener

แปลว่าสารช่วยให้กาวแข็งตัว [ป่าไม้]; สารช่วยแข็ง [สีและวาร์นิช]; ตัวบ่มแข็ง [พลาสติก]; ตัวทำให้แข็ง [วิชาถ่ายภาพ]

Magnetite

แปลว่า(Concrete Engineering) An aggregate used in heavy weight concrete, consisting primarily of ferrous metaferrite (Fe304). A black magnetic iron ore with a specific gravity of approximately 5.2 and a Mohs hardness of about 6.

rapid-hardening cement

แปลว่าปูนซีเมนต์แข็งตัวเร็ว

Band Saw Steel (Wood)

แปลว่า(english) A hardened tempered bright polished high carbon cold rolled spring steel strip produced especially for use in the manufacture of band saws for sawing wood, non ferrous metals, and plastics. Usually carries some nickel and with a Rockwell value of approximately C40/45.

harden surface

แปลว่าพื้นหน้าดินแข็ง, พื้นที่อันแน่นและแข็ง

hardness

แปลว่าความแข็ง