本文關(guān)鍵詞： 養(yǎng)護(hù)環(huán)境 水工混凝土 標(biāo)準(zhǔn)養(yǎng)護(hù) 自然養(yǎng)護(hù) 長(zhǎng)齡期 抗壓強(qiáng)度　出處：《水力發(fā)電》2016年04期 　論文類型：期刊論文

【摘要】：研究了在標(biāo)準(zhǔn)養(yǎng)護(hù)環(huán)境和自然養(yǎng)護(hù)環(huán)境下,普通硅酸鹽水泥、礦渣硅酸鹽水泥和摻粉煤灰硅酸鹽水泥的長(zhǎng)齡期混凝土抗壓強(qiáng)度及其增長(zhǎng)規(guī)律。結(jié)果表明:(1)自然環(huán)境下混凝土早期強(qiáng)度稍高于標(biāo)準(zhǔn)養(yǎng)護(hù)環(huán)境下混凝土強(qiáng)度,而后期強(qiáng)度則低于標(biāo)準(zhǔn)養(yǎng)護(hù)環(huán)境下混凝土的強(qiáng)度;(2)不同養(yǎng)護(hù)環(huán)境下的混凝土抗壓強(qiáng)度與齡期關(guān)系均呈對(duì)數(shù)增長(zhǎng)關(guān)系;(3)養(yǎng)護(hù)環(huán)境對(duì)硅酸鹽水泥混凝土各齡期強(qiáng)度及其增長(zhǎng)規(guī)律的影響稍大于礦渣硅酸鹽水泥混凝土;(4)摻粉煤灰硅酸鹽水泥混凝土具有早期強(qiáng)度較低,增長(zhǎng)率較小,而后期強(qiáng)度增長(zhǎng)速度快,至180 d齡期后仍有一定增長(zhǎng)的特性。
[Abstract]:The common Portland cement was studied in the standard curing environment and natural curing environment. Compressive strength and growth of long age concrete of slag Portland cement and fly ash Portland cement. The results show that: 1). The early strength of concrete in natural environment is slightly higher than that in standard curing environment. The later strength of concrete is lower than that of the standard curing environment. (2) the relationship between compressive strength and age of concrete under different curing environment is logarithmic; (3) the influence of curing environment on the strength and growth law of Portland cement concrete is slightly greater than that of slag Portland cement concrete. (4) Portland cement concrete with fly ash has the characteristics of low early strength and low growth rate, while the later strength growth rate is fast, and it still has some characteristics after 180 d age.
【作者單位】： 云南省水利水電勘測(cè)設(shè)計(jì)研究院;長(zhǎng)江水利委員會(huì)長(zhǎng)江科學(xué)院;
【分類號(hào)】：TV431
【正文快照】： 0引言為避免由于溫度變化產(chǎn)生膨脹或收縮變形而產(chǎn)生溫度應(yīng)力,導(dǎo)致大體積混凝土出現(xiàn)溫度裂縫,一般采取摻入一定量的粉煤灰、磷渣或石灰石粉等摻合料或選用中熱、低熱或低熱礦渣硅酸鹽水泥等措施[1-2]。大體積混凝土一般具有早齡期(28 d齡期之前)強(qiáng)度較低,后期強(qiáng)度增長(zhǎng)率大的特，

本文編號(hào)：1450429