Aiming at the problems of metakaolin hydraulic lime mortar material,such as low tensile strength,low ultimate elongation and brittleness,in order to improve its toughness and stability,enhance its crack resistance,the PVA fiber doped metakaolin hydraulic lime mortar material was designed and prepared.The shrinkage rate,wave velocity,compressive strength,flexural strength and splitting tensile strength of the mortar with different content and length of PVA fiber were studied.The mechanism of PVA fiber in mortar was analyzed by SEM.The results shown that PVA fiber changed the shrinkage and internal structure of the mortar.The flexural strength and splitting tensile strength increased with increasing the fiber amount.The compressive strength decreased with increasing the fiber amount when the fiber length was constant.PVA fiber can obviously improve the integrity of mortar,and kep good original condition after compression.Mechanical riveting cooperation was developed between fiber and mortar,and had good adhesion.
Zhao Xuan, Wang Jie, Wang Fengrui, Zhang Xiaobing, Qiao Zhen, Wang Ruilin
. Study on the property of PVA fiber reinforced metakaolin hydraulic lime mortar[J]. New Chemical Materials, 2021
, 49(2)
: 249
-253
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.057
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