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HRM High Reactivity Metakaolin

(Concrete Engineering) Refined form of an ASTM C618, Class N (natural) pozzolan. A high performance, mineral admixture, similar in performance to silica fume, additionally comparable in cost. Pure white powdered in form will, not effect the natural color or darken concrete as silica fume does. Suitable for high-performance color matching in architectural concrete. Dosage at 5% to 10%, of cement by weight. No bleed water, better finishability, more creamy, cleanup is easier with slightly higher 28 day strengths and 25% - 35% less plasticizer is required than silica fume.

Link Support

ฐานรองรับแบบข้อยึด

Supplementary General Conditions

เงื่อนไขทั่วไปของสัญญาเพิ่มเติม

cupling

ปลอกข้อต่อแป๊บท่อน้ำ, ข้อต่อสำหรับต่อหัวแป๊บสองข้าง

Wetland

(Environmental Engineering) Semi-aquatic land, that is land that is either inundated or saturated by water for varying periods of time during each year, and that supports aquatic vegetation which is specifically adapted for saturated soil conditions.

upstage

ทางหลังเวที

Heterotrophic

(Environmental Engineering) A group of organisms which obtain carbon for synthesis from other organic matter or proteins.

Customer

(Software Engineering) the person or group that has requested the software and will be paying the bill for its development

up-to date construction

การก่อสร้าง (อาคารบ้านเรือน) แบบทันสมัยในปัจจุบัน

duplicator

เครื่องพิมพ์สำเนา, เครื่องอัดสำเนาหรือโรเนียว

Basic Oxygen Furnace (BOF)

(english) "WHAT A pear-shaped furnace, lined with refractory bricks, that refines molten iron from the blast furnace and scrap into steel. Up to 30% of the charge into the BOF can be scrap, with hot metal accounting for the rest. WHY BOFs, which can refine a heat (batch) of steel in less than 45 minutes, replaced open-hearth furnaces in the 1950s; the latter required five to six hours to process the metal. The BOF's rapid operation, lower cost and ease of control give it a distinct advantage over previous methods. HOW Scrap is dumped into the furnace vessel, followed by the hot metal from the blast furnace. A lance is lowered from above, through which blows a high-pressure stream of oxygen to cause chemical reactions that separate impurities as fumes or slag. Once refined, the liquid steel and slag are poured into separate containers. "

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