11085

10214

كارشناسي ارشد

تكنولوژي نساجي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده نساجي

1394

هشت، 85ص.: مصور

مهدي حجازي

حسين حسني

محمد شيخ زاده، رضا جعفري ندوشن

1394/12/10

مهندسي نساجي

ID10214

چكيده 1 فصل اول مطالعات انجام شده 1 1 مقدمه 2 1 2 منسوجات سهبعدي 2 1 2 1 پارچهي بريد 3 1 2 2 پارچههاي تاري و پودي 4 1 2 3 پارچههاي حلقوي 8 1 2 4 منسوجات بي بافت 11 1 3 كامپوزيتها 11 1 4 انواع كامپوزيتهاي پليمري 11 1 4 1 كامپوزيتهاي ممينيتي 21 1 4 2 منسوجات دوبعدي كامپوزيتي 21 1 4 3 منسوجات سهبعدي كامپوزيتي 21 1 5 بررسي دواد منسوجات سهبعدي كامپوزيتي 21 1 6 كامپوزيت سيماني 31 1 6 1 كامپوزيت سيماني تقويت شده با الياف پليمري 41 1 6 2 بتن تقويت شده با منسوجات 61 1 6 3 ضايعات سنگ ري 81 ب 1 6 4 كامپوزيتهاي سيماني حاوي ضايعات سنگ ري 81 ب 1 7 آزمايش دمش 11 1 8 مدلسازي به روش المان محدود 22 1 1 مدلسازي كامپوزيتهاي سهبعدي به روش المان محدود 22 فصل دوم مواد مصرفي و آزمايشات انجام شده 2 1 مقدمه 62 2 2 مواد مصرفي و طراحي آزمايشات 62 2 3 مصالح عمراني 72 2 3 1 ل سنگ 72 گ 2 3 2 سيمان 72 شش 2 4 مواد نساجي 72 2 4 1 الياف پليپروپيلن 72 2 4 2 پارچهي بيبافت 72

81AbstractNowadays using of 3D fabrics is demonstrate increasing to produce composites with reinforcement indifferent directions For instance usage of 3D fabric in civil industry improves tensile and flexuralstrength of concrete In present study two types of fabric including geotextile and knitted fabric wereused to reinforce cementitious matrix In 3D fabric sample containing geotextile three types of fabricwere made with different orientation angle of spacer yarns 3D knitted fabric were also fabricated in twotypes including with and without spacer yarns High tenacity polyester yarn was used to produce 3Dknitted spacer After that 3D fabrics were filled with cement mortar The cement mortar that used in thisstudy was contained cement waste stone powder and water Using waste stone powder is a usefulmethod to recycle this waste material and to reduce environmental impact of this material Three pointbend and heat transfer tests have been conducted on textile reinforced concrete TRC samplescontaining geotextile Three point bend test has been also carried out on TRC samples containing 3Dknitted spacer The three point bend test results for TRC samples containing geotextile showed that theflexural strength would be increase by decrease of orientation angle of spacer yarns In addition decrease orientation angle of spacer yarns cause to increasing of heat transfer in TRC samples On theother hand for TRC samples containing 3D knitted spacer fabric presence of spacer yarns cause toincrease of flexural strength in comparison 3D spacer fabric without spacer yarns In the final finiteelement method has been used to model the flexural behavior of TRC samples Finite element FE modeling for samples containing polypropylene spacer yarn and geotextile were done in macro scale The outputs of FE model are compared to experimental results whereas showed good agreement betweensoftware and experimental analysis To modeling of TRC samples containing 3D knitted spacer in thefirst flexural behavior of TRC samples with different location of 3D knitted spacer fabrics wasinvestigated in meso scale The modeling result show that the best location of knitted fabric to improveflexural strength of cementitious matrix is at the bottom of neutral axis and the worst location is in theupper of neutral axis In addition increase of weft per centimeter wpc leads to decreasing of theflexural strength of TRC Consequently FE analysis was done in macro scale for TRC samplescontaining 3D knitted spacer fabric Moreover an equation to calculate the reinforcing efficiency factorof fabric and spacer yarns in concrete was developed and the reinforcing efficiency factor werecalculated for all TRC samples Key words Textile concrete three point bend test heat transfer composite finite element modeling reinforcingefficiency factor

مهدي حجازي

حسين حسني

محمد شيخ زاده، رضا جعفري ندوشن