【摘 要】
：
One of the main problems associated with concrete during its production to the cast-in-place and service life is its continuous shrinkage.The phenomenon of
【机 构】
：
Center of Excellence for Concrete Research and Testing, College of Engineering, King Saud University
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
One of the main problems associated with concrete during its production to the cast-in-place and service life is its continuous shrinkage.The phenomenon of shrinkage is ascribed to the concrete contraction accompanied to water loss from the very beginning of its production.Flowable concrete mortar shrinkage negatively affects the mechanical properties through internal stresses in the form of micro-cracks with internal and/or external apparent deformations.The use of super absorbent polymer (SAP) helps the compensation for water loss;thus,SAP controls the shrinkage at early stage of concrete preparation.The effect of pore water extracted from pastes of different water-to-binder ratios on the absorptivity and efficiency of SAP on the drying shrinkage of self-flowable concrete mortar subjected to low relative humidity is investigated.There is a kind of competitive physicochemical interaction between SAP, the high range water reducing admixture (HRWR) and the cementitious matrix that is significantly affected by pore water concentration.
其他文献
Rapid-repair concretes are currently used to repair structures such as bridge decks, substructure elements on bridges (e.g.piers and columns), pavements, an
This study was derived from field investigations to assess bisphenol A(BPA)concentrations in the sea and river sediments of the Gulf of Gdansk.Black carbon(BC)a
“白鲸表演正式开始!”伴随着广播里传出的浑厚男中音,三头白鲸上下摆动宽大尾叶突,如箭矢般冲进宽阔的表演池.它们或侧身用鳍状肢拍打水面,或齐聚池边高唱天籁(lài)之音.欢
In this paper, the basic properties, including setting time, compressive strength, drying shrinkage of sulphate aluminum cement paste in corporating bamboo
“阿德、阿智、阿体、阿美、阿劳,美味的早餐来啦,赶快来吃哦!”轮到五年级的晶晶值日,她一大早就在卫生管理员水娟阿姨的帮助下,先跑到学校楼顶的“空中农场”摘下新鲜的小
近年来,朝鲜民主主义人民共和国(以下简称朝鲜)经济改革和开放步伐在不断的加快,朝鲜进一步下放企业经营自主权,广泛开展招商引资活动,兴办中朝合资合作百货商场、服装家电小
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
【张J…、的蜊惦】 1996~1 1 85 x 160 Cn7邓箭今油画作品郭润文油画作品【落叶的春天】19既年135xll5口rl生存问题l19日5年146Xll4Cm,礴7☆0璺】1993§陈振国水雌…{J f1¨l
亲爱的西子姐姐,你好!rn我有一个困难,请你帮忙开导一下.从小学一年级开始,在班里面就好像没有人理过我.我自己主动去找他们玩,他们也不睬我.我在学校里虽然交到了许多朋友,
2010年,中国进入中等偏上收入国家行列,开始向经济发展新常态过渡。经济新常态下,针对有人质疑中国能够跨越“中等收入陷阱”的悲观情绪,习近平一再指出,支撑中国经济发展的