研究了聚丙烯纤维和微膨胀复合对混凝土抗折强度、抗渗性和收缩变形的影响。
The influence of compounding polypropylene fiber and expansion on flexure strength, impermeability and the shrinkage deformation is studied.
其低温开裂机理表明聚酯纤维低温抗裂性是影响沥青路面温度收缩裂缝的主要因素。
The low temperature mechanism indicates the capability of low temperature anti-cracking of polyester fiber is the main factor affecting temperature shrink crack.
乳胶水泥具有较好的抗脆裂性及较小的收缩性，能对尾管提供长期支撑，是多底井固井理想的水泥浆体系。
The gel cement has better embrittlement resistance and little shrinkage, and can provide long time supporting for the liner, thus it is an ideal select for multi-lateral cementing.
本文研究了石子和砂子的不同粘土含量、石粉含量对混凝土强度、抗渗性和收缩性能的影响。
Effect of clay content and rock powder of gravel and sand on concrete property is studied in this paper, include compressive strength, impermeability and dry shrinkage.
在砂浆中加入聚丙烯纤维，可以改善砂浆的韧性，提高砂浆的抗裂性，减小收缩。
After fiber is mixed into Dry-mixed mortar, toughness, crack resistance of mortar will be improved, and dry shrinkage of mortar has reduced.
采用再生粗集料配制混凝土时，强度和抗冻性均良好，但收缩较大。
When coarse reclaimed aggregate is used to prepare concrete, the concrete is good in strength and frost resistance and its shrinkage is rather great.
研究结果表明，大掺量粉煤灰活性粉末混凝土具有较小的体积收缩率，抗碳化、抗氯离子渗透、耐硫酸盐浸蚀性优异。
The result shows that high content fly ash active powder concrete has small volumetric shrinkage and excellent anti-carbonization resistance to penetration of chlorine ion and to sulfate corrosion.
研究了具有高流动性的流态混凝土的配比、流动性、早期裂纹扩展、强度、收缩、碳化和抗冻融性，这种混凝土无论在成本上还是性能上都是非常可行的。
Mixture proportions, flowability, crack propagation at early ages, strength, shrinkage, carbonation and the freezing and thawing resistance of flowing concrete with high flowability were investigated.
采用高性能强力纤维多层复合结构，机械强度高，抗开裂性好，热收缩力强；
Multi-layer composite structure with high quality puissant fiber was adopted. The products have high mechanical strength, good cracking resistance, and strong heat-shrinkable power.
木质纤维的生物尺寸稳定性好，混合料不会发生收缩沉降，并提高其抗裂性。
Biological dimensions of wood fiber has good stability, there will be no contraction of mixtures settlement, and to increase their crack resistance.
本发明石材勾缝胶具有如下优点：渗透性好，固化后不粘手，抗收缩能力强，打磨后胶有亮度等优点。
The jointing glue for stone has the advantages of good permeability, no tackiness after curing, strong antishrinking capability, glue brightness after polishing and the like.
它克服了采用现有的普通云石胶作为勾缝胶会存在气干性差，抗收缩能力差，渗透性差等缺点。
The invention overcomes the defects of poor air-dried performance, low antishrinking capability, poor permeability and the like when the existing ordinary marble glue is used as the caulking sealant.
它克服了采用现有的普通云石胶作为勾缝胶会存在气干性差，抗收缩能力差，渗透性差等缺点。
The invention overcomes the defects of poor air-dried performance, low antishrinking capability, poor permeability and the like when the existing ordinary marble glue is used as the caulking sealant.
应用推荐