ผลการค้นหา

ค้นเจอ 89 รายการ

Temper

(Concrete Engineering) The addition of water to the cement mix whether at the batch plant, during transit or at the jobsite to achieve the specified water to cement ratio.

Sulfate Resistance

(Concrete Engineering) Ability of cement paste, aggregate, or mixtures thereof to withstand sulfate attack.

Neat Cement-Paste

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

Non-evaporable Water

(Concrete Engineering) The water in concrete which is irremovable by oven drying; chemically combined during cement hydration.

Plastic

(Concrete Engineering) A condition of freshly mixed concrete. mortar or cement -paste indicating that it is workable and readily re-moldable, is cohesive, and has an ample content of fines and cement but is not over wet.

Cellular Concrete

(Concrete Engineering) A lightweight product consisting of portland cement, cement-pozzolan, cement sand, lime-pozzolan, or lime-sand pastes, or pastes containing blends of these ingredients and having a homogenous void or cell structure, attained with gas forming chemicals or foaming agents. For cellular concretes, containing binder ingredients other than or in addition to portland cement, autoclave curing is usually employed.

Plastic Consistency

(Concrete Engineering) Condition in which concrete, mortar, or cement paste will sustain deformation continuously in any direction without rupture.

Nonpoint source pollution (NPSP)

(Environmental Engineering) Any pollution from a source which cannot be attributed to a particular discharge point, e.g. from agricultural crops, city streets, construction sites, etc.

Chemical fixation (or stabilization/solidification)

(Environmental Engineering) A term for several different methods of chemically immobilizing hazardous materials into a cement, plastic, or other matrix.

Plasticity

(Concrete Engineering) Property of freshly mixed concrete, cement paste or mortar which determines its ease of molding or resistance to deformation.

puzzolan

ปูนผสมขี้เหล็กเตาหลอมโลหะ เป็นปูนแข็งตัวช้า และไม่แข็งเหมือนปูนซีเมนต์ ชนิด " Portland Cement " ปุนชนิดนี้ไม่ค่อยนิยมใช้กันในปัจจุบัน

Rebound

(Concrete Engineering) Wet shotcrete or sand and cement which bounces away from a surface again at which pneumatically applied mortar is being projected.

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