膨胀剂

U-type expansive agent for concrete is an additive made by mixing and grinding sulfoaluminate clinker, alunite and anhydrite powder together.

我们吸收了中国明矾石膨服水泥'和美国K型膨胀水泥rZ'之特性，研制成功U刑膨胀剂(l民称UEA，uni七ed expansivo agen七)。

The optical dilatometer allows operators to measure absolute thermal expansion or sintering behavior in a single test.

光学膨胀剂使操作者能够在单个试验中测量绝对热膨胀或烧结行为。

analytical model ; self-compact ; self-stressing ; concrete filled in steel tube ; confined expansivity ; polyacrylonitrile fiber

在填充的核心混凝土中掺加一定量的膨胀剂，可以使混凝土产生膨胀变形，有效地防止钢管内部混凝土与钢管的剥离。

Simultaneously the grain composition and external environments humidity and the temperature also play the certain extent role to the mortar efflorescence..

通过大量的试验数据发现：粉煤灰、膨胀剂、减水剂、防水剂都能不同程度地抑制泛碱的产生，同时颗粒级配和外部环境的湿度和温度也对砂浆泛碱程度有一定影响。

The influence of different expansion agent on physical and mechanical properties of the cement were investigated.

测定了各膨胀剂的膨胀性能及其对水泥物理力学性能的影响。

Ettringite is not stable in concrete, however,it always tends to recrystallize.

文章摘要：钙矾石是水泥重要的水化产物之一，也是铝酸盐类膨胀剂产生膨胀的主要物质，但它在混凝土中并不稳定，容易发生重结晶。

According to the experience in the process of construction in recent years,the causes of wall surface cracking and the success and failure of the construction methods in the past are analyzed;and referring pertinent data and attempting to add sweller into the mortar which is used to masonry and plaster the wall surface so that the cracking can be balanced by the moderate swell of the mortar.

根据近几年施工中的经验，分析了墙面裂纹产生的原因以及以往施工方法的得失，查阅有关资料，尝试着在砌筑及抹面砂浆中掺加膨胀剂，以砂浆自身适度膨胀抵消收缩裂纹。

According to the experience in the process of construction in recent years,the causes of wall surface cracking and the success and failure of the construction methods in the past are analyzed;and referring pertinent data and attempting to add sweller into the mortar which is used to masonry and plaster the wall surface so that the cracking can be balanced by the moderate swell of the mortar.

根据近几年施工中的经验，分析了墙面裂纹产生的原因以及以往施工方法的得失，查阅有关资料，尝试着在砌筑及抹面砂浆中掺加膨胀剂，以砂浆自身适度膨胀抵消收缩裂纹。虽然这一方法尚不成熟，但确实值得同行们继续共同关注、探讨

Vitriol mountain town alumstone exploits cost low , entire exploit be a strip mining, the ore may ascertain whose use , potasium sulphate , may produce alums , inferior may produce a swelling agent , early strong medium agent , accelerating agent first-class but giving birth to a child according to the grade.

矾山镇的明矾石开采成本低，整个开采是露天采矿，矿石可根据品位确定其用途，上等可生产硫酸钾、中等可生产明矾、下等可生产膨胀剂、早强剂、速凝剂。

High-Al cement or calcium aluminate cement, soft clay, kyanite, Al2O3 and/or SiO2 powder, and naphthalenesulfonic acid-formaldehyde condensate.

铝硅质原料是焦宝石、莫来石或高铝矾土中的一种或几种以上，其中Al 2 O 3 ≥45％；结合剂为高铝水泥或纯铝酸钙水泥；高铝水泥占喷补料总量不少于5％，其中Al 2 O 3 ≥46％，CaO≤40％；纯铝酸钙水泥中Al 2 O 3 ≥69％，CaO≤25％；烧结剂和可塑剂为软质粘土，膨胀剂为蓝晶石；外加剂为萘磺酸甲醛缩合物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。