| 1. | Effects of water - cement ratio on plastic shrinkage cracking of concrete
水灰比对混凝土塑性收缩裂缝的影响 |
| 2. | The paper analyzes its performance with the range of the content of gas former , expanding pearlite and water - cement ratio
文中对引气剂用量、珍珠岩用量及水灰比对材料吸声性能影响进行了研究与分析。 |
| 3. | It may be the deposition of caco3 in capillary that divide the large capillary into small one . carbonation can also lower the water permeability of samples
因此碳化将会降低水泥石和水泥砂浆的渗透性，渗透性的降低与水灰比有关，水灰比越大其降低的幅度也越大。 |
| 4. | Under different sand ratio , the relationship between water cement ratio and 28 day compressive strength is researched and the coefficient of recycled concrete is induced
在不同砂率下,分析了再生混凝土28天龄期抗压强度与水灰比之间的关系,并回归分析得出了再生骨料系数。 |
| 5. | Abstract : water - cement ratio is an important parameter in concrete proportioning design and has a great effect on the nature of concrete , such as its intensity and durability
文摘:水灰比是砼配合比设计中一个重要参数，主要体现在其对砼性能(和易性、强度和耐久性等)的影响上。 |
| 6. | By controlling the range of the dry density , magnitude of cement and water cement ratio of mixture , the requirement of drainage property and structure strength can be fulfilled
通过控制混合料的干密度、水泥用量和水灰比的取值范围，可使混合料同时满足排水性能要求和结构强度要求。 |
| 7. | The paper has studied the influence of water - cement ratio on the early - age shrinkge and whole shrinkge through self - deviced experimental apparatus for measuring early - age shrinkage
通过自行设计早期收缩测试装置研究了水灰比对混凝土早期收缩的影响规律并在此基础上测试了混凝土总收缩。 |
| 8. | The results of experiments show out : the frost - heave stress of normal concrete with low w / c ratio was more small than the frost - heave stress of normal concrete with high w / c ratio under freezing condition
试验研究表明:受冻条件下,低水灰比基准混凝土冻胀应力要比高水灰比基准混凝土的冻胀应力小。 |
| 9. | Meanwile , the frost - heave stress of all concrete with different w / c ratio decreased with the adding of mineral additives , the decreaseing extent of concrete with high w / c ratio is more bigger between them
同时,掺入矿物掺合料的不同水灰比混凝土的冻胀应力都减小,其中高水灰比混凝土减小幅度较大。 |
| 10. | This butch of beams use 525 # common portland cement , the water - cement ratio is 0 . 53 , the design strength is c35 . lt is cut apart to 150x 150x 150mm3 cube with cutter
该批混凝土梁采用525 ’普通硅酸盐水泥，水灰比为0 53 ，设计强度为c35 。用切割机切成150x150x150mm ’的立方体，测得其立方体抗压强度为41 |
