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- Research about the effects of mineral admixture on the compressive strength and pore porosity of low-temperature concrete without antifreeze. 摘要目的研究了在不掺防冻剂的情况下,掺合料种类及掺量对低温沉凝土强度及孔隙率的影响。
- Mineral admixture plays an important role in applying concrete with high performance cementitious material. 摘要加人适当矿物掺合料是使水泥基材料达到高性能的重要手段之一。
- Mineral admixture is one of the necessary compositions of the high performance concrete. 矿物掺合料是高性能混凝土的必备组分之一。
- In this experiment,the abrasion resistance of concrete mixed with expansive compound mineral admixture is studied. 试验研究了添加膨胀组分的复合矿物掺合料的混凝土耐磨性能。
- The effects of Water-cement(w/c) ratio and mineral admixture on the frost resistance of concrete were studied. 研究了水灰比、掺合料、引气剂对混凝土抗冻性能的影响。
- The conclusion shows the method fits and the mineral admixture can reduce the pore porosity of concrete and improve the compactibility and freezing resistance of concrete. 结论对于混凝土冬季施工更合适未用自然变低温养护的方法,掺入适量的掺合料能使混凝土孔隙率显著降低,使混凝土更加密实,提高混凝土的抗冻性。
- Only when the Ca(OH)2 in the system is very small,it is possible that the mineral admixture can inhibit alkali-silica reaction effectively. 只有当Ca(OH)2含量低到一定程度时,混合材才有可能抑制碱-硅反应膨胀。
- In this paper the usability of a quarry dust limestone powder in concrete applications substituted for fly ash as mineral admixture is investigated. 为了有效利用石粉资源,本文对石灰岩石粉代替粉煤灰作混凝土矿物掺合料的可用性进行了研究。
- But now, the research about improvement of mineral admixture on slump loss is mostly limited to its optimizing chemic elements of cement. 但是目前关于矿物掺合料对坍落度损失的改善机理仅主要局限于其对水泥化学组份的优化效应。
- Contrast four types of mineral admixture under different replace level: the effectiveness and rules of the suppressing impact to the ASR. 3、分别考察了四种类型的混合材在不同取代水平条件下对ASR抑制效果的有效性和规律。
- The classification, mechanism of expansion, role of Ca(OH)_2 and the preventing mechanism of mineral admixture for alkali-aggregate reaction were reviewed in detail. 本文详细评述了碱-集料反应的分类、膨胀机理、Ca(OH)_2的作用和混合材的抑制机理。
- This paper concentrates on the influence of mineral admixture(such as fly ash,blast furnace slag and silica fume) on fluidity and one day early strength of cement mortar. 本文在试验的基础上研究了矿物掺合料单掺和复掺时对水泥胶砂流动性及1d早期强度的影响。
- Compared with the influence of retarder,mineral admixture and superplasticizer to the setting time,fluidity and compressive strength of SAC by paste and mortar experiment. 结果表明:适当掺量缓凝剂可以有效的控制混凝土塌落度损失、改善施工性能,并可适当提高硬化浆体强度;
- The early-age hydrates and paste structure of complex binders composed of Portland cement, mineral admixture and expansive agent were investigated with XRD and ESEM. 利用XRD和ESEM研究了由硅酸盐水泥、矿物掺和料和膨胀剂组成的复合胶凝材料的初期水化产物和浆体结构。
- This article has analyzed hydration mechanism of the phosphorus dreg concrete, and evaluate the performance of concrete with mineral admixture resists sulfate attack at present. 本文分析了磷渣混凝土的水化机理,对目前国内外混凝土掺和料的抗硫酸盐性能进行了评述。
- The difference of influence between active mineral admixture and inert ones on the structure and properties of complex binders emerges gradually in the later hydration period. 活性与惰性矿物掺合料对复合胶凝材料浆体结构与性能的影响的差异在水化后期逐渐显现。
- Final results of experiment indicate that adding some synthetic fiber to HPC with the mineral admixture or cement mortar can decrease cracking 95% at least and enhance the durability of concrete. 试验结果表明,在掺活性掺合料高性能混凝土中掺加一定量合成纤维可以使混凝土或砂浆减裂95%25以上,并可以提高混凝土耐久性。
- In this thesis,the effect of cement characteristic,such as clinker composition,particle properties and mineral admixture used in cement,on the compatibility of WRA with cement was studied. 本文从水泥的主要组成与颗粒特性及水泥中的混合材等几个方面研究了水泥特性对水泥与减水剂适应性的影响。
- Based on analysis of research history and status of mineral admixture, the paper discusses the shortcomings and problems of current reseach, and finally suggests the trend of mineral admixture research. 通过对矿物掺合料研究历史和研究现状的分析,探讨了当前研究的主要缺陷及存在的问题,并展望了下一步的研究方向。
- The test adopted milled manganese slag powder to study its physics performance,activation,soundness and mechanical property,in order to investigate the feasibility of using it as mineral admixture in concrete. 试验采用磨细锰矿渣粉,研究其物理性能、活性、体积安定性及力学性能,考察其作为混凝土矿物掺合料的可行性。