Polymer action on alkali–silica reaction in cement mortar

Abstract

Due to the improvement of several properties, such as lower water absorption and increasing resistance to microcracking, polymer modification of mortar and concrete potentially leads to an inhibiting effect on alkalisilica reaction (ASR). In this study, polymer-cement mortars (PCMs) were subjected to accelerated alkali reactivity tests and their performance compared to that of an unmodified cement mortar (CM). Expansion of PCMs was overall higher, but SEM observations revealed apparent lower microcracking intensity of the cement paste, compared to the unmodified CM. Subsequent stiffness damage tests (SDTs) quantified the existing damage after alkali reactivity tests and confirmed the lower microcracking intensity in PCMs.

Dual-Shell Microcapsules for High-Response Efficiency Self-Healing of Multi-Scale Damage in Waterborne Polymer–Cement Coatings

“…Waterborne polymer–cement coatings have been widely used in indoor and outdoor building facilities due to their green, environmentally friendly, and good barrier features [ 1 , 2 , 3 ]. However, waterborne coatings can be easily affected by various environmental factors such as temperature and humidity during use [ 4 ].…”

آثار اصلاحی پلیمرهای استایرن بوتادین رابر و استایرن آکریلیک بر خواص مخلوط‌های پایه سیمان آلومینات کلیسم

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بررسی و مقایسه ی مشخصات مخلوط های پایه ی سیمانی اصلاح شده با مواد پلیمری مختلف

“…@U =yQt}rB sr}i p}mWD =@ |Qt}rB O=wt = Q} R 'OQm xO=iDU= xv}y@ VwQ ?PH u= R}t xrtH R= s=wO w |m}v=mt X=wN |NQ@ w OvwW|t uD@ Q=DN=U Pi=vt "OvyO|t Q= Qk Q}F -=D CLD = Q ? ; |U}r}U |}=}rk Vvm =w uwt= Q}B |xar=]t QO [7] '2013 u= Q=mty w = QD}i w OvrDQB u=t}U R= '|@; x}=B [1] "OQ=O |yHwD p@=k C}ty= '|v=t}U |x}=B |=y\wrNt |m}v=mt pNrND V}=Ri= ? @U Ovv=wD|t Q=DN=U QO =wy ?=@L O=H}= ?…”