早期强度

Q相-C2S-C12A7系统水泥的早期强度高，中后期强度有一定的提高。

The cement has high early strength and its compression strength is improved at the middle and late periods .

熟料中P2O5含量超过一定范围时，水泥凝结变慢，早期强度显著下降。

When P_2O_5 in the clinker exceeds a certain limit , the setting time of cement becomes longer and the early strength is reduced significantly .

研究结果表明：Q相CAC12A7高铝水泥早期强度高，中后期强度仍在发展且不倒缩。

The results show that the cement has high early strength and its compressive strength is developing during middle and late period .

CSA外加剂对复合矿物掺料混凝土早期强度及干缩的改善效果

Early Quality Improvement and Drying Shrinkage Reduction of the Concrete by Using CSA Type Admixture

PMA微乳液对水泥砂浆早期强度影响

Influence of PMA Microemulsion on the Strength of Cement Mortar

AFS稳定土和石灰土相比，早期强度有了较大提高，并具有较好的抗裂性。

Soil stabilized with AFS has higher early lime soils strength and better anti cracking characteristics than lime soil .

水化3d时，针柱状AFt晶体相互交织，和Ca（OH）2构筑成水泥石骨架，早期强度明显提高。

At 3 days curing age , AFt crystal of the needle intertwined each other . And it built into the cement matrix with Ca ( OH ) 2 , the early strength was improved .

室内检测结果表明，该促凝剂：①可显著提高矿渣MTC在低温下的早期强度；

The indoor testing results show : ① the early stage strength of slag MYV in low temperatures can be remarkably enhanced with the accelerator ;

以正交设计实验法研究了Ca（OH）2、CaSO4.2H2O和NaOH等激发剂对煤矸石水泥复合体系早期强度的影响。

In this paper , the influence of activators on the compressive strength of mixed cement based materials is studied with orthogonal design , of which were Ca ( OH ) _2 , CaSO_4 · 2H_2O , NaOH .

EP砂浆采用不同的固化剂时，其早期强度和可操作时间存在较大的差异，其可操作时间随着固化剂用量的增加相应缩短；

Different solidified agents bring great difference to the early strength and operable time of the EP mortar , and the operable time will be reduced with the dosage of solidified agents increment ;

考虑到水泥早期强度几乎为零，后期强度增长缓慢，采用了蒸压养护条件，加速水泥的凝结硬化过程，胶砂强度达到15MPa，甚至20MPa以上。

Considering the early strength of cement is almost zero , post strength grows slowly .

硬化体早期强度较低，后期强度有较大增长（120d后仍有所增长）；

The early strength of concretion is low while the late strength increases remarkable even after 120 d.

改进P.O32.5R水泥早期强度提高混合材掺加量。

Early Strength Improvement of P.O32.5R Cement By Adding More Admixture .

矿渣的CaO含量相对很高，它能加速二次水化反应的进行，所以矿渣的掺入在一定程度上提高了混凝土的早期强度。

CaO content of the slag is higher by comparison , it can speed up the second hydration reaction , so the concrete early strength can be improved with the incorporation of the slag for a certain extent . 4 .

从化学结合水、TG-DTA、XRD分析结果来看，终粉磨水泥早期强度高于球磨水泥的原因是水化速度较快。

From chemical binding water , TG-DTA and XRD analysis , we can conclude that reason for early strength of finish grinding cement to be higher than that of ground by ball mill consists in faster hydration speed .

研究结果表明，采用WH-1活化剂可有效激发煅烧煤矸石潜在的火山灰活性，显著提高煤矸石粉注浆材料早期强度，并可保证后期有较高的强度，能满足注浆材料对强度性能使用的要求。

The experimental results show that the activator can effectively activate gangue activation to increase the initial strength obviously .

结果表明复合矿物硫酸盐激发剂能显著地提高用作水泥混合材的低钙液态渣的活性，并提高其水泥的强度，尤其是1d、3d的早期强度。

The results show that composite minerals sulfate activator can greatly improve activity of low content calcium oxide liquid slag which then can be used as additive to cement and improved the strength of cement , especially early strength in one day and three days .

结果表明，掺复合矿化剂可改善含碱水泥的物理性能&凝结时间正常，早期强度高，28d强度不倒缩。

It is shown that the physical properties of alkali-containing cements doped with complex mineralizer can be improved such as normal setting time , high early compressive strength and no decrease in 28 day strength .

而使用活性掺合料改善用普通硅酸盐水泥做基体的GRC耐久性时，又会带来GRC的早期强度过低及脱模时间过长的问题。

And when using reactive admixtures to improve the durability of the GRC which uses ordinary silicate cement as base material , it then will cause the problem that GRC 's early strength is low and the demolding time is langer .

将研制出的NES高效减水剂应用于水泥，其对水泥颗粒有良好的分散作用；促进水泥水化，硬化后结构更加致密，早期强度得到提高；

When adding NES into cement , it can improve the cement paste divergence , accelerate cement hydration , densify hardened cement structure , enhance the compressive strength at early stage , entrain small pore , and improve hardened cement structure .

通过一系列试验，对石灰粉煤灰稳定沙漠沙掺加早强剂Na2CO3和NaOH后的早期强度作出了评价，分析了其早强机理，同时对其后期力学性能和温缩性能进行了试验。

Through a series of tests , the early strength of lime-fly ash stabilized sands with early strength accelerators , NaOH and Na2CO3 , are evaluated . The mechanism of early strength is analyzed , and the mechanical property and temperature contraction performance are also tested .

通过试验表明，在微波加热养护的过程中只要采取合理的措施，就能使试块在早期强度得到迅速提高，并且其28d的强度与标养试块的强度也无太大差异。

The test shows that in the process of microwave heating and conservation the test block at the early strength rapidly improve as long as reasonable measures are taken and the intensity of its 28d and stand test block has no much difference .

结果表明：随着ZnCl2掺量的增加，水泥水化放热速率降低，水泥水化与硬化延缓，电阻率发展变慢，水泥早期强度明显降低，但对28d抗压强度影响较小；

Results show that with increasing amount of ZnCl_2 , the hydration exothermic rate is lowered , hydration and hardening of cement is delayed , the resistivity development and the early strength are reduced , effect on 28 d compressive strength is slight .

作者研究了HW系列修补剂的若干基本性质。研究表明，HW系列修补剂具有能明显提高水泥胶砂早期强度（最高者4h抗折强度可达4.38MPa）及后期强度的效能。

After working on the basic properties of HW series , the study results show that HW series can obviously increase the early period strength ( at best in 4h its flexural strength can reach 4.38MPa ) and its later period strength of cement mortar .

研究结果表明：掺胶粉水泥砂浆28d抗压强度有明显下降，但掺量小于10%时，对水泥砂浆的早期强度几乎没有影响；

The experiment result shows that the compressive strength in 28 days of cement mortar were decreased obviously by adding rubber powder , but it has little influence on the compressive strength of the mortar in early stage when rubber powder content was less than 10 % .

扩展度达245mm，砂浆抗压强度39MPa，抗折强度67MPa，同时，具有早期强度高、收缩小的特征。

Self-leveling mortar fluidity is 245 mm , compressive strength is 39 MPa , flexural strength is 6.7 MPa , Meanwhile , it has the characteristics of high early strength and little shrinkage .

试验结果发现：熟料早期强度随C4A3-S和C4AF含量的增加而增大，而C2S则更有利于后期强度的发挥；

The result from the experiment shows that with the increase of the content of C_4A_3 and C_4AF , the early strength of clinker is increased and C_2S , in turn , helps the further improvement of the strength .

评价结果表明。调整后的低密早强剂G203（A）与其他添加剂配伍性好，能够提高早期强度缩短候凝时间，固井成本低。

Test results showed G203 ( A ) had good compatibility with other cement additives , the thickening time of the slurry with G203 ( A ) in was shorted , and the early strength of cement stone was improved .

DZ-Z由多种无机化合物和有机化合物按一定的比例复合而成，具有双重早强作用，它能明显地提高低温下水泥石的早期强度，并能改善水泥石结构，使之致密、渗透率降低。

DZ-Z is composed of many inorganic and organic compounds proportionally and presents dual early strength effect . It can improve the early strength of cement significantly under the condition of low temperature . And also the compact texture of cement can be improved and permeability decrease correspondingly .

因此使其具有正常的初凝时间和较高的早期强度。

Therefore , phosphorous slag cement has a higher early strength .