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🧱 陶瓷与木材

🏗️混凝土

城市的水硬性陶瓷:水泥、水、骨料,通常还有钢筋。

又称: 钢筋混凝土 · reinforced concrete · HPC / UHPC

混凝土 — Wikimedia lead image
Ablazejo · CC BY-SA 3.0

速览

Portland + SCMsBinder
A1; cover saves rebarFire
Clinker-intensiveCO₂
RC frameIcon
~1.4 W/m·Kλ
ceramicsFamily

混凝土 is one of 32 materials in this atlas, grouped under ceramics: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.

Scores compare 混凝土 with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.

Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.

深入阅读

Deep dive: 混凝土

混凝土 (C-S-H binder + aggregate) is a family of grades whose density ~2400 kg/m³, heat band does not melt; dehydrates and spalls, and fire letter A1.

What “the material” actually is

混凝土 is sold as grades, not as a single substance. Chemistry C-S-H binder + aggregate, density ~2400 kg/m³, heat band does not melt; dehydrates and spalls.

This atlas treats 混凝土 as a system: mill route, coatings, tests and the cavity it sits in.

Heat, fire and insulation

Conductivity note: ~1.4 W/m·K. Insulation score 22/100 is relative to 32 entries — metals lose, VIPs and aerogels win.

Fire letter in editorial use: A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.

How it is made and used

Origin: Roman pozzolana; Aspdin 1824; Hennebique RC, Rome → Leeds → Paris. The process chapter follows feedstock → conversion → forming → finish → install.

Uses span buildings to defence / safety. Pairings matter: steel.

Market and circularity

Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.

Circularity mark 30/100. Ask which scrap, which certificate, which year.

画像

706890226030
强度 70
耐热 68
火灾性能 90
隔热 22
加工性 60
循环性 30

七章

常见问题

Is 混凝土 non-combustible?
Declared reaction class in this atlas: A1. Assemblies still need resistance tests.
Does 混凝土 insulate?
Thermal mark 22/100 versus the atlas. Conductivity note: ~1.4 W/m·K.
What is the density band?
~2400 kg/m³
How is it made?
Origin story: Roman pozzolana; Aspdin 1824; Hennebique RC (Rome → Leeds → Paris).
Can it be recycled?
Circularity mark 30/100 — editorial, route-specific.
Typical melting or failure heat?
does not melt; dehydrates and spalls
What should it be paired with?
steel: The tensile partner (rebar).
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.

图标

1

Pantheon dome

Italy · 126 CE

Pantheon dome is a reference point in the public image of 混凝土.

Ingalls Building

Ingalls Building

United States · 1903

Ingalls Building is a reference point in the public image of 混凝土.

Hoover Dam

Hoover Dam

United States · 1936

Hoover Dam is a reference point in the public image of 混凝土.

Burj Khalifa mix

Burj Khalifa mix

UAE · 2010

Burj Khalifa mix is a reference point in the public image of 混凝土.

Hennebique frame

Hennebique frame

France · 1890s

Hennebique frame is a reference point in the public image of 混凝土.

6

Brutalist béton

Global · 1950s–

Brutalist béton is a reference point in the public image of 混凝土.

Shotcrete tunnel

Shotcrete tunnel

Global · 20th c.–

Shotcrete tunnel is a reference point in the public image of 混凝土.

Roman marine

Roman marine

Italy · antiquity

Roman marine is a reference point in the public image of 混凝土.

开关图标后,柱会按所选集合的领先者重新缩放。

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对决

同一家族、不同分数 — 选一场。

相近材料

六轴上最近的邻居 — 强度、耐热、火灾、隔热、加工性、循环性。

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