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(1 河北建筑工程學(xué)院土木工程學(xué)院, 張家口 075051; 2 河北省土木工程診斷、 改造與抗災(zāi)重點(diǎn)實(shí)驗(yàn)室, 張家口 075051; 3 中房集團(tuán)張家口房地產(chǎn)開發(fā)公司, 張家口 075000; 4 張家口市住房和城鄉(xiāng)建設(shè)局, 張家口 075000; 5 張家口市城達(dá)房地產(chǎn)開發(fā)有限公司, 張家口 075000)

摘要: 為研究建筑、工業(yè)廢棄物在加固用水泥基灌漿料中的應(yīng)用,主體膠凝材料是普通硅酸鹽水泥 P·O42. 5,通過設(shè)計(jì)正交試驗(yàn),探討了水膠比、再生細(xì)骨料、膠砂比、鐵尾礦粉、粉煤灰五個(gè)因素對(duì)灌漿料基本性能的影響,試驗(yàn)測(cè)定了 0min 和 30min 的試塊流動(dòng)度,并分別對(duì)養(yǎng)護(hù) 1、3、28d 后的試塊進(jìn)行抗折、抗壓試驗(yàn)并進(jìn)行了微觀分析. 結(jié)果表明:在以養(yǎng)護(hù) 28d 為最終強(qiáng)度標(biāo)準(zhǔn)條件下,通過正交極差分析發(fā)現(xiàn)水膠比對(duì)試塊力學(xué)性能影響最大,膠砂比影響最小;建筑、工業(yè)廢棄物能充分應(yīng)用于加固灌漿料中,能促進(jìn)水化反應(yīng),填充空隙,提高強(qiáng)度. 較合理因素水平組合為水膠比 0. 36,膠砂比 1:0. 8,再生細(xì)骨料摻量 40%,鐵尾礦粉摻量 8%,粉煤灰摻量 8%.

關(guān)鍵詞: 加固; 水泥基灌漿料; 流動(dòng)度; 抗折強(qiáng)度; 抗壓強(qiáng)度

中圖分類號(hào):TU528 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)05-0068-08

DOI:10. 19701 / j. jzjg. 20220573

Experimental study on mechanical performance of green cement-based grouting material for reinforcement

ZHANG Huifang1,2, CHEN Huijun1,2, YAN Zhengwei1,2, WANG Lianqing3,ZHANG Zhanchao4, LIU Haijing4, WEI Wenbo4, WANG Guobin5

(1 School of Civil Engineering, Hebei University of Architecture, Zhangjiakou 075051, China;2 Hebei Key Laboratory for Diagnosis, Reconstruction and Anti-disaster of Civil Engineering, Zhangjiakou 075051, China;3 Zhongfang Group Zhangjiakou Real Estate Development Company, Zhangjiakou 075000, China;4 Zhangjiakou City Housing and Urban-Rural Development Bureau, Zhangjiakou 075000, China;5 Zhangjiakou Chengda Real Estate Development Co. , Ltd. , Zhangjiakou 075000, China)

Abstract: In order to study the application of construction and industrial waste in cement-based grouting material forreinforcement, the main cementing material is ordinary portland cement P·O42. 5. The effects of five factors includingwater-binder ratio, recycled fine aggregate, cemilar-sand ratio, iron-tail powder and fly ash on the basic properties of groutwere investigated by orthogonal experiment. The fluidity at 0min and 30min, the flexural strength and compressive strengthafter curing for 1, 3 and 28d were microscopic analyzed. The results show that under the condition of 28d as the finalstrength standard, through the orthogonal range analysis, it is found that the influence of water-binder ratio is the greatest,and that of cement-sand ratio is the least. Construction, industrial waste can be fully used in the reinforcement groutmaterial, can promote hydration reaction, fill gaps, improve strength. The more reasonable level combination of factors iswater-binder ratio 0. 36, cemilar-sand ratio 1:0. 8, content of reclaimed fine aggregate 40%, content of iron tailings powder8%, and the content of fly ash 8%.

Keywords:reinforcement; cement-based grouting material; fluidity; flexural strength; compressive strength

∗河北省自然科學(xué)基金資助項(xiàng)目(E2018404047),河北省高等學(xué)校科學(xué)研究項(xiàng)目(ZC2023136),張家口市重點(diǎn)研發(fā)計(jì)劃“科技冬奧專項(xiàng)”資助項(xiàng)目(20110015D),河北建筑工程學(xué)院創(chuàng)新基金資助項(xiàng)目(XY202209).

第一作者:張會(huì)芳,碩士,副教授,主要從事材料科學(xué)、綠色建材與節(jié)能建筑新體系、工農(nóng)業(yè)廢棄物綜合利用技術(shù)研究,Email:42228449@ qq. com.

[引用本文] 張會(huì)芳,陳匯鋆,顏政偉,等. 加固用綠色水泥基灌漿料力學(xué)性能試驗(yàn)研究[ J]. 建筑結(jié)構(gòu),2023,53(5):68-75. ZHANG Huifang,CHEN Huijun,YAN Zhengwei, et al. Experimental study on mechanical performance ofgreen cement-based grouting material for reinforcement[J]. Building Structure,2023,53(5):68-75.