CAJ | 학술논문

为有效提高橡胶砂浆的力学性能，采用丁苯乳液与聚丙烯纤维对其进行复合改性，通过试验研究了丁苯乳液、聚丙烯纤维对橡胶砂浆抗压强度、抗折强度、弹性模量的影响。研究结果表明：当丁苯乳液聚灰比为15%时，丁苯乳液改性砂浆的抗折强度达到最大值；橡胶掺量为20%，丁苯乳液聚灰比为10%时，丁苯乳液改性橡胶砂浆的抗折和抗压强度达到最佳。在橡胶掺量为20%的试验组中，掺入聚丙烯纤维后，聚丙烯纤维丁苯乳液改性橡胶砂浆的抗折和抗压强度明显增大，而当丁苯乳液聚灰比为10%时，丁苯乳液改性橡胶砂浆的抗折和抗压强度达到最大值；对于橡胶掺量为30%的试验组，聚丙烯纤维丁苯乳液改性橡胶砂浆的抗压强度和抗折强度基本上随着丁苯乳液聚灰比增大而逐渐减小。当改性材料组为丁苯乳液10%+橡胶30%+聚丙烯纤维时，砂浆的弹性模量最小，此时砂浆的柔韧性最佳。
위유효제고상효사장적역학성능，채용정분유액여취병희섬유대기진행복합개성，통과시험연구료정분유액、취병희섬유대상효사장항압강도、항절강도、탄성모량적영향。연구결과표명：당정분유액취회비위15%시，정분유액개성사장적항절강도체도최대치；상효참량위20%，정분유액취회비위10%시，정분유액개성상효사장적항절화항압강도체도최가。재상효참량위20%적시험조중，참입취병희섬유후，취병희섬유정분유액개성상효사장적항절화항압강도명현증대，이당정분유액취회비위10%시，정분유액개성상효사장적항절화항압강도체도최대치；대우상효참량위30%적시험조，취병희섬유정분유액개성상효사장적항압강도화항절강도기본상수착정분유액취회비증대이축점감소。당개성재료조위정분유액10%+상효30%+취병희섬유시，사장적탄성모량최소，차시사장적유인성최가。
Presented a study on the mechanical properties of rubber mortar including compressive strength,flexural strength and elastici-ty modulus with the inclusion of the two macromolecules,SBR latex,polypropylene fiber.The results showed that the compressive strength and flexural strength achieved best when the polymer-cement of butyl benzene latex was 15%;When the rubber content was 20% and the polymer-cement of SBR latex was 10%,the compressive strength,flexural strength of SBR latex of mortar was best.For 20% rubber parti-cles test groups,the compressive strength,flexural strength of SBR Latex & PP fiber modified rubber mortar increased with the inclusion of PP fiber,especially when the polymer-cement of SBR latex was 10%;For 30% rubber particles test groups,the compressive strength, flexural strength of SBR latex & PP fiber modified rubber mortar decreases as the polymer-cement of SBR latex increased.When the group of materials was SBRL10%+R30+PP,the elastic modulus of mortar was the smallest and the flexibility of the mortar achieves best.