【摘 要】
：
The effects of superabsorbent polymers on the shrinkage and mechanical properties of concrete were investigated.Results of shrinkage tests show that SAP additio
【机 构】
：
School of Civil Engineering,Harbin Institute of Technology,
【出 处】
：
Journal of Wuhan University of Technology(Materials Science
论文部分内容阅读
The effects of superabsorbent polymers on the shrinkage and mechanical properties of concrete were investigated.Results of shrinkage tests show that SAP addition reduces the shrinkage.Especially,for the concrete with 3.84 kg SAP/m3 concrete,the shrinkage is little.Compressive strength of concrete with SAP is lower than that of concrete without SAP.However,for the concrete with SAP,the ratio of compressive strength at 90 days to one at 3 days is larger than that of concrete without SAP.
The effects of superabsorbent polymers on the shrinkage and mechanical properties of concrete were investigated. Results of shrinkage tests show that SAP addition reduces the shrinkage. Especially for the concrete with 3.84 kg SAP / m3 concrete, the shrinkage is little. Compressive strength of concrete with SAP is lower than that of concrete without SAP. For, for the concrete with SAP, the ratio of compressive strength at 90 days to one at 3 days is larger than that of concrete without SAP.
其他文献
平焰烧咀和传统的一切烧咀不同,它喷出的火焰不是柱状的,而是贴着炉壁向四周伸展的圆盘形薄层。在选用平焰烧咀设计和改造加热炉时,必须根据平火焰这一特点,采取一些相应的
目前,在顶管施工中存在的问题主要有:对顶管施工中顶进力的计算,浅层顶管时土体的移动,长距离顶管时注浆减摩的作用机理,以及曲线顶管时弯曲半径。结合重庆市主城排水工程D干
诚信与创新,这听起来像是口号,但确是段士元事业腾飞的秘诀。列车抵达12月的长春,车窗外的最低气温已经达到零下30摄氏度。十几天前,一场大雪曾经阻断华北铁路交通。这让我们
加压湿法冶金起源于 1 859年。当时 ,俄国化学家尼柯莱·尼古拉耶维奇·贝克托夫 ( 1 82 7～1 91 1 )在巴黎学习。在化学试验中 ,他发现 ,增大氢气压力并加热 ,可以从硝酸银溶
1.3527 C16BZ55/04-B型工业汽轮机(哈尔滨汽轮机厂)该汽轮机系单缸冲动背压式,节流调节,额定功率为4195千瓦,额定转速5840转/分。新汽参数:3.43MPa、435℃、71.13t/h。排汽
柴油机管路系统的接头装置,一般都采用铰接式管接头(GB3541-83),在很多情况下须在管路系统上设置一个开关,以控制管路的启闭(如油箱、滤清器等的管路系统)。实用新型专利“
在现代化施工尤其是在钢结构施工过程中为了提高机械化施工的效益、质量,最终实现施工效益的最大化、施工过程的合理化、施工水平的现代化的目标。钢结构施工机械动态作业定
“以生为本”就是要以学生的生命为本,教育者要让教学成为学生凸显生命活力的过程,这是新的课程标准的核心思想。落实《课程标准》是课程改革的规范化要求。观念是行动的先导
巴基斯坦3×50兆瓦拉克拉电站供货协议书于1987年9月14日签字。其全套设备(包括安装)由东方电站成套设备公司成套。作为其主要设备的三台220吨/时(100大气压、
Pakistan 3
Mortar prisms made with different cements or mineral admixtures plus 30% mass of limes tone filler were stored in 2% magnesium sulfate solution at 5±1 ℃ for 1