發(fā)布時(shí)間：2017-12-27 16:47

  本文關(guān)鍵詞：礦渣-水泥固化堿渣土的工程特性　出處：《建筑材料學(xué)報(bào)》2017年04期 　論文類型：期刊論文

  更多相關(guān)文章： 固化堿渣土 優(yōu)選配合比 無側(cè)限抗壓強(qiáng)度 屈服應(yīng)力 壓縮特性

【摘要】：以天津港北疆港區(qū)的廢棄堿渣為研究對(duì)象,提出了利用高爐礦渣微粉(GGBS)、水泥對(duì)高含水率堿渣進(jìn)行固化處理的方法,并對(duì)基于模糊評(píng)價(jià)法得到的優(yōu)選配合比固化堿渣土的壓縮特性進(jìn)行了研究.結(jié)果表明:同等固化劑摻量下,混摻固化劑的固化堿渣土的強(qiáng)度要高于單摻固化劑的固化堿渣土;基于優(yōu)選配合比(3%水泥+8%GGBS)的固化堿渣土壓縮系數(shù)及壓縮指數(shù)隨齡期的延長不斷降低,而結(jié)構(gòu)屈服應(yīng)力不斷增大.固化堿渣土的壓縮性能在屈服前后變化很大,建議工程中應(yīng)確保上部荷載不能超出其結(jié)構(gòu)屈服應(yīng)力,以免發(fā)生突然破壞.
[Abstract]:In the northern port of Tianjin port waste residue as the research object, proposed the use of blast furnace slag powder (GGBS), the method for curing cement soda residue with high water content, and the optimized fuzzy evaluation method with the research than the compression characteristics of alkali residue based on curing. The results showed that: the same mixing amount of curing agent under the mixed curing of soda residue soil curing agent content the strength is higher than that of single doped alkali muck curing curing agent; optimum mix ratio (based on 3% cement +8%GGBS) curing soda residue soil compression coefficient and compression index with increasing age decreases, while the yield stress increased. The compression performance of solidified alkali residue changes in the great yield before and after, to ensure that the upper load cannot exceed the yield stress should be recommended in the project, so as to avoid the occurrence of sudden failure.
【作者單位】： 河海大學(xué)巖土力學(xué)與堤壩工程教育部重點(diǎn)實(shí)驗(yàn)室;河海大學(xué)江蘇省巖土工程技術(shù)工程研究中心;交通運(yùn)輸部天津水運(yùn)工程科學(xué)研究院;
【基金】：浙江省交通運(yùn)輸廳科技計(jì)劃項(xiàng)目(2014H28) 中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(TKS140209) “十二五”國家科技支撐計(jì)劃項(xiàng)目(2015BAB07B06)
【分類號(hào)】：X781.2
【正文快照】： 中國多采用氨堿法進(jìn)行純堿生產(chǎn),而氨堿法制堿過程中產(chǎn)生大量的堿渣,不僅污染環(huán)境且占用土地資源,由于其高含水量、高壓縮性、失水性差,導(dǎo)致處理存在很大困難.在歐美等國家就因堿渣污染處理困難將氨堿法遺棄或采用控制手段避免堿渣的產(chǎn)生[1-2].目前,國內(nèi)常用的處理方法主要為:(

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