- 摘 要
-
(湖南大學(xué)土木工程學(xué)院，長沙 480012)
［摘要］采用8字形新老砂漿抗拉粘結(jié)強度的試驗方法，研究了丁苯聚合物乳液水泥基界面粘結(jié)材料在不同養(yǎng)護制度、不同粘結(jié)方法、不同齡期、不同配比條件下的粘結(jié)性能,同時研究其本體強度變化規(guī)律，對其粘結(jié)改性機理進行初步探討，并利用掃描電鏡對界面粘結(jié)微觀結(jié)構(gòu)進行了分析。結(jié)果表明，其粘結(jié)性能良好，抗折強度可以提高，抗壓強度不顯著下降。
［關(guān)鍵詞］配比；界面；粘結(jié)強度；丁苯聚合物砂漿；水泥基材料
Experimental research on the new-to-old interfacial bond and the strength of SBR mortar
Nong Jinlong, Peng Bo, Huang Zhengyu, Yi Weijian, Zhao Lei(College of Civil Engineering, Hunan University, Changsha 410082, China)
Abstract:The interfacial bond performance of the polymer modified cement-based mortars to the old mortar is researched under the conditions of different curing systems, bond methods, aging and proportion.The mechanism of different materials by use of SEM is discussed.A good result is achieved.
Keywords:proportion; interface; bond strength; SBR polymer mortar；cement-based material
作者簡介：農(nóng)金龍，博士研究生，Email:nongjinlong@sina.com。
參考文獻
［1］買淑芳.混凝土聚合物材料及其應(yīng)用［M］.北京：科學(xué)技術(shù)文獻出版社，1996.
［2］LUCA ZAMPORI, ISABELLA NATALI SORA, RENATO PELOSATO. Chemistry of cement hydration in polymer-modified pastes containing lead compounds［J］. Journal of the European Ceramic Society，2006, 26(4-5): 809-816
［3］ALESSANDRA E F DE S ALMEIDA, EDUVALDO P SICHIERI. Experimental study on polymer-modified mortars with silica fume applied to fix porcelain tile［J］.Building and Environment, 2007, 42(7): 2645-2650.
［4］M- PALACIOS, F PUERTAS.Effect of shrinkage-reducing admixtures on the properties of alkali-activated slag mortars and pastes［J］. Cement and Concrete Research,2007,37(5):691-702.
［5］D W FOWLER.Polymer in concrete: a vision for the 21th century［J］. Cement and Concrete Composites, 1999, 21(516):532-537.
［6］王培銘，許綺，丁 Stark.橋面用丁苯乳液改性水泥砂漿的力學(xué)性能［J］.建筑材料學(xué)報，2001，4（1）：1-6
［7］RU-WANG, PEIMING WANG, XINGUI LI-Physical and mechanical properties of styrene-butadiene rubber emulsion modified cement mortars［J］.Cement and Concrete Research, 2005, 35(5): 900-906.
［8］NOSAYABA-F O EVBVOMWAN. A state of the artreport on the strength and durablity proprrties of polymer modified mortars and concrete//［C］.Symposium in the Sixth Polymer Concrete International Conference, Shanghai:Publishing Company of Tongji University,1991.
［9］KUHLMAMN LA. Styrene-butadience latex modified concrete: the ideal concrete repair material［J］. Concrete International: Design & Construction, 1990,12(10): 59-65.
［10］G BARLUENGA, F HERN?NDEZ OLIVARES. SBR latex modified mortar rheology and mechanical behaviour［J］. Cement and Concrete Research, 2004, 34(3): 527-535.
［11］A-JENNI,R ZURBRIGGEN,L HOLZER, et al. Changes in microstructures and physical properties of polymer-modified mortars during wet storage［J］. Cement and Concrete Research,2005,36(1):79-90.
