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单词 pozzolanic
释义

pozzolanicadj.

Brit. /ˌpɒtsəˈlɑːnɪk/, U.S. /ˌpɑtsəˈlɑnɪk/
Forms: 1800s pozolanic, 1900s– pozzolanic, 1900s– puzzolanic.
Origin: Formed within English, by derivation. Etymons: pozzolana n., -ic suffix.
Etymology: < pozzolan- (in pozzolana n.) + -ic suffix.
Of the nature of or containing pozzolana.
ΘΚΠ
society > occupation and work > materials > raw material > mineral material > [adjective] > made of or containing specific mineral material
jet1444
pozzolanic1811
jade1869
1811 J. Farey Gen. View Agric. Derbyshire I. 408 Limestones..of different qualities, as Compact, Porcellanic.., Pozolanic or Water, Stinking or Swine, &c.
1829 S. Glover Hist. County of Derby I. 85 There is also pozolanic or watery limestone.
1911 Times 6 Dec. 26/3 The employment of some substances, e.g., of the pozzolanic class, which would combine with the hydrated lime set free in the process of setting of cement, was perhaps not so common.
1944 Jrnl. Hellenic Stud. 64 113 The modern term ‘pozzolanic mortar’ would apply both to the crushed tile and volcanic ash mortars—that is, to both artificial and natural pozzolanic ingredients.
1956 Proc. Inst. Electr. Engineers 103 A. 225/1 Pulverized fuel fly ash from our power stations..has the pozzolanic property of setting with lime under water.
1980 J. Mercer Canary Islanders 8 A mid-Quaternary puzzolanic deposit has yielded a leaf possibly of a laurel-forest species.
1995 Materials Sci. Forum 192–4 877 Specimens were made of pozzolanic cement using two water/cement ratios (0.5 and 0.7 respectively).

Derivatives

ˌpozzolaˈnicity n. the property of combining with lime in the presence of water to form a cement.
ΘΚΠ
society > occupation and work > materials > derived or manufactured material > cement or mortar > [noun] > qualities of cement
pozzolanicity1960
1960 B.S.I. News Jan. 15 ‘Pozzolanic portland cements’ may contain up to twenty per cent. pozzolana but need not pass the test for pozzolanicity.
2001 Cement & Concrete Res. 31 97 The melting of municipal solid waste incerator..fly ash can produce an extremely stable glassy slag that exhibits pozzolanicity if activated.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online June 2022).
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adj.1811
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