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- The effects of polypropylene fiber on the plastic shrinkage stress and plastic shrinkage ratio of the mortars were investigated by use of a self-designed measuring device. 采用自行研制的水泥砂浆塑性收缩应力测试装置和非接触式测长装置,分别研究了低掺量的聚丙烯纤维对水泥砂浆塑性收缩应力和塑性收缩率的影响。
- Effect of Polypropylene Fiber on the Plastic Shrinkage Stress and Plastic Shrinkage Ratio of Mortar 聚丙烯纤维对水泥砂浆塑性收缩行为的影响
- plastic shrinkage ratio 塑性收缩率
- In addition,water quantity of concrete is bigger,plastic shrinkage of concrete is bigger when water to cement ratio is invariable. 通过试验研究了混凝土用水量、水灰比等混凝土配合比参数对混凝土塑性收缩的影响。
- The dehumidified veneer is of good flatness and small shrinkage ratio. 干燥后的单板平整度好,收缩率小。
- The thesis studies the influence of compounding polypropylene fiber and expansion agent to Plastic shrinkage of mortar. 摘要混凝土的塑性收缩裂缝,是其结构原生缺陷的主要来源,无论是否可见,都会影响混凝土的耐久性。
- Some manufacturers use fiber reinforcement to control plastic shrinkage and thermal cracking. 一些生产商使用纤维增强来控制塑性收缩和热胀开裂。
- The amount and the kind of admixture could also impose on the plastic shrinkage. 矿物掺和料的品种及掺量对净浆的塑性收缩也有很大的影响。
- The intensification of immiscible element in this process is the key to realize uniformization sintering and reach a higher shrinkage ratio. 加强非西安理工大学硕士学位论文一互溶性组元在此方面的功用作用是实现此类材料均匀化、高收缩比烧结的关键。
- The adhesive is characterized with such good qualities as good optical performance, hige adhension, rapid photocuring, and low volume shrinkage ratio. 试验表明,该胶具有光学性能优良,粘接强度高,固化定位速度快,低收缩率,耐高低温变性好等优点。
- The paper states that the plastic cracks after shaped the pumping concreting divides into plastic settlement crack and plastic shrinkage crack. 本文阐述泵送混凝土浇筑成型后产生的塑性裂缝,分为塑性沉降裂缝和塑性收缩裂缝。
- In this work, the effect of water-binder ratios (w/b) and amount of admixture on the plastic shrinkage of blended cement paste were investigated. 摘要采用自行设计测定塑性收缩的方法,对不同胶凝材料净浆在不同水胶比情况下的塑性收缩变化规律及矿物掺和料对塑性收缩的影响进行了研究。
- When the content of 316L kept constant, the relative density, shrinkage ratio and HRC value of the sintered samples decreased with the increase of 316L particle size. 在316L含量一定的情况下,随着316L颗粒尺寸的增大,复合材料的密度略有降低,相对密度和线收缩率逐渐减小,试样的HRC硬度值下降。
- Authors studied the influence of different kinds, quantity and length of polypropylene fiber on early stage plastic shrinkage crack of mortar. 研究不同品种、掺量、长度的聚丙烯纤维对砂浆早期塑性收缩裂缝的影响。
- The types of those cracks are summarized as three kinds: plastic shrinkage cracking, dry shrinkage cracking and hydration heat cracking. 将引起混凝土裂缝的类型归纳为塑性收缩开裂,干燥收缩开裂,水化热开裂三种,并对其表象及成因进行了阐述。
- The molding size was designed according to the average shrinkage ratio of polystyrene,demoulding mechanism of taper microgroove and arc side core-pulling mechanism was used in the mold. 按聚苯乙烯的平均收缩率设计计算模具成形尺寸,在模具中设计了圆锥细纹脱模机构、弧形侧抽芯机构。叙述了模具成形零件的设计与加工工艺过程、浇注系统和其它结构的设计过程,并介绍了模具工作过程。
- The plastic shrinkage decreases with the increase of water-binder ratios between 0.28 and 0.35,while increases for the ratios from 0.35 to 0.45.The amount and the kind of admixture could also impose on the plastic shrinkage. 水胶比为0.;28~0
- This paper introduces the influence of the polyropylene fiber on plastic shrinkage and anti-permeability of concrete,and the analysis of anti-cracking and impermeability mechanism. 介绍了聚丙烯纤维对混凝土塑性收缩及抗渗性能的影响,并进行机理分析,最后展望了聚丙烯纤维混凝土在渠道防渗工程中的应用前景。
- Shrinkage ratio of size after heated 受热尺寸收缩率
- shrinkage ratio of cross section 断面收缩率