CAJ | 학술논문

以重烧 Mg O 和磷酸二氢铵为主要原料制备磷酸镁水泥修补材料,研究了氧化镁与磷酸二氢铵的比值(M/P)、水胶比(W/B)、硼砂掺量、粉煤灰掺量及龄期对磷酸镁水泥石耐磨性的影响,采用 X射线衍射分析和扫描电镜探讨不同龄期水化产物的物相组成及结构。结果表明,M/P＝4时磷酸镁水泥石耐磨性最强；7d内磷酸镁水泥石耐磨性随W/B增大而减弱；掺入硼砂和粉煤灰都会影响磷酸镁水泥石的耐磨性,且掺量越大耐磨性越差；磷酸镁水泥石耐磨性随龄期延长而提升。
이중소 Mg O 화린산이경안위주요원료제비린산미수니수보재료,연구료양화미여린산이경안적비치(M/P)、수효비(W/B)、붕사참량、분매회참량급령기대린산미수니석내마성적영향,채용 X사선연사분석화소묘전경탐토불동령기수화산물적물상조성급결구。결과표명,M/P＝4시린산미수니석내마성최강；7d내린산미수니석내마성수W/B증대이감약；참입붕사화분매회도회영향린산미수니석적내마성,차참량월대내마성월차；린산미수니석내마성수령기연장이제승。
Based on the magnesium oxide and ammonium dihydrogen phosphate as the main raw material prepa-ration of magnesium phosphate cement.the influent law of different M/P ratio (quality ratio of magnesium and potassium dihydrogen phosphate),the ratio of water and binder (W/B ratio),borax content,dosage of fly ash and ages on the magnesium phosphate cement abrasion resistance are studied in this passage.XRD and SEM are used to investigate the phase composition and structure of the hydration products in different ages.The results show that the magnesium phosphate cement has the strongest abrasion resistance when M/P=4;within 7 days the abrasion resistance decreases when W/B increases;borax content and fly ash can weaken the abrasion resist-ance of magnesium phosphate cement,and the more the dosage,the worse the abrasion resistance;the abrasion resistance of magnesium phosphate cement increases with the age.