本文選題：水硬性石灰　切入點：強度　出處：《新型建筑材料》2017年02期

【摘要】：水硬性石灰作為一種傳統(tǒng)的硅酸鹽建筑材料,廣泛應(yīng)用于歷史建筑文物的修復(fù)中。研究了礦粉及其它外加劑改性的水硬性石灰的配合比優(yōu)化設(shè)計方法、物理力學(xué)性能、水化硬化機理。研究表明:摻加4種外加劑(黏性助劑、粘結(jié)助劑、觸變助劑、抗裂助劑)及亞硝酸鈣能夠提高試樣的抗折強度,對抗壓強度提升作用有限;當(dāng)磨細礦粉作為摻合料復(fù)合石灰后,抗壓強度顯著提高,綜合抗壓和抗折強度,最優(yōu)配合比為60%石灰+40%礦粉+0.8%四種外加劑+2.0%亞硝酸鈣,此時,抗折和抗壓強度分別為1.44、13.90 MPa。
[Abstract]:As a kind of traditional silicate building material, hydrated lime is widely used in the restoration of historical buildings. The optimum design method and physical and mechanical properties of hydrated lime modified by mineral powder and other admixtures are studied. The mechanism of hydration and hardening. The results show that the addition of four admixtures (viscosity, bonding, thixotropic, crack resistance) and calcium nitrate can improve the flexural strength of the samples, but have limited effect on the compressive strength. When pulverized ore powder is used as admixture of composite lime, the compressive strength is improved significantly. The optimum mix ratio is 60% lime, 40% mineral powder, 0.8% mineral powder, 0.8% calcium nitrite, and the compressive strength is 1.44n0.90MPa, and the optimum mixture ratio is 60% lime, 40% ore powder, 0.8% mineral powder, and 2.0% calcium nitrite.
【作者單位】： 北京工業(yè)大學(xué)城市與工程安全減災(zāi)教育部重點實驗室工程抗震與結(jié)構(gòu)診治北京市重點實驗室;北京國文琰文化遺產(chǎn)保護中心有限公司;
【基金】：教育部“新世紀優(yōu)秀人才支持計劃”項目(NCET-12-0605) 北京市屬高等學(xué)校高層次人才引進與培養(yǎng)計劃項目(CIT&TCD20150310)
【分類號】：TQ177.27

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