000002117 001__ 2117 000002117 005__ 20141118153442.0 000002117 04107 $$acze 000002117 046__ $$k2013-05-27 000002117 100__ $$aCHANG, Ta-Peng 000002117 24500 $$aENGINEERING PROPERTIES OF COMPOSITE GEOPOLYMER MORTAR 000002117 24630 $$n1.$$pProceedings of the First International Conference on Concrete Sustainability 000002117 260__ $$bJapan Concrete Institute, Tokyo 000002117 506__ $$arestricted 000002117 520__ $$2eng$$aThis study investigates the engineering properties of composite geopolymer mortar manufactured by replacing the slag with metakaolin of 0, 30 and 70% by weight, together with three volumetric ratios of sand of 0, 10, and 30%, respectively. The experimental results show that, with the increase of volumetric ratio of sand, the dynamic modulus of elasticity, ultrasonic wave velocity and thermal conductivity of composite geopolymer increase by 28%, 4.4% and 21.3%, respectively. But the compressive strength and shrinkage of composite geopolymer decrease by 23% and 15.4%, respectively. It is concluded that the addition of sand into the composite geopolymer tends to reduce its shrinkage at the expense of lowering its compressive strength. 000002117 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000002117 653__ $$aslag, metakaolin, geopolymer, mortar, drying shrinkage, curing humidity, thermal conductivity 000002117 7112_ $$aFirst International Conference on Concrete Sustainability$$cTokyo (JP)$$d2013-05-27 / 2013-05-29$$gICCS13 000002117 720__ $$aCHANG, Ta-Peng$$iCHEN, Zih-Cian$$iYANG, Tzong-Ruey 000002117 8560_ $$ffischerc@itam.cas.cz 000002117 8564_ $$s1018024$$uhttp://invenio.itam.cas.cz/record/2117/files/S2-1-6.pdf$$y Original version of the author's contribution as presented on CD, . 000002117 962__ $$r2053 000002117 980__ $$aPAPER