坍落度

在多元线性回归中，以各显著因素为自变量，得出了坍落度、28d抗压强度和28d劈拉强度与各控制因素之间的线性表达式。

The linear regression equation between slumps , compressive strength , splitting tensile strength to the factor is concluded .

混凝土方面磁化后坍落度有所增加，抗压强度早期可提高10%，28天提高20%左右。

When mixed with magnetic water , concrete slumps increase , and initial compressive strength can improve 10 % and compressive strength after 28-day cure can improve 20 % .

这种混凝土介于碾压混凝土和常态混凝土之间，由稠度（VC值）不同的零坍落度混凝土构成。

The new concept RCC lies between RCC and conventional concrete , with a zero slump and variable VC values .

采用粉煤灰、矿渣浆状掺合料，可配制出强度等级为C15~C60、坍落度为（200±20）mm的混凝土；

Concrete in strength grade of C15 ~ C60 with slump value of ( 200 ± 20 ) mm can be produced with fly ash or slag slurry .

BTC型智能便携式混凝土坍落度仪应用试验研究

Experimental study on BTC intelligent portable tester for slump of concrete

随着水胶比的增大，砼3d和28d抗压强度显著降低，坍落度明显增大；

With the increase of W / B ratio , 3 d and 28 d compressive strength decrease and the slump increase notably ;

PSL低坍落度损失缓凝高效减水剂的研制

Development of PSL Low Slump Loss and Retarding High Range Water Reducing Agent

合成的HP减水剂在混凝土中掺量为水泥用量的0.3%&0.4%时，取得了减水率超过20%，坍落度3h以上基本不损失的效果。

The water-reducing ratio was 20 % at 0.3 % ~ 0.4 % dosage of the cement weight , the slump-loss in 3h was reduced greatly .

低坍落度损失高效减水剂氨基磺酸系高效减水剂ASP具有减水率高、坍落度损失小等特点，但其价格较高、混凝土易泌水离析，限制了其工程应用。

Aminosulfonic acid series superplasticizer ( ASP ) has high water reducing rate and low slump loss with time elapsed , but shortcomings such as expensive price , low workable performance , easy bleeding and segregation of concrete limit its application .

主要研究了采用普通水泥和高贝利特水泥（HBC）配制的混凝土及高性能混凝土的工作性、力学性能及抗裂性能。采用高贝利特水泥配制的混凝土坍落度损失远小于普通水泥混凝土；

The workability , mechanical properties and cracking resistance of the high-belit cement concrete and high performance concrete and ordinary cement concrete were studied in this paper .

还讨论了UEA对高性能混凝土强度及坍落度损失的影响。

By changing the replacement levels of UEA , the effects of UEA on the strength and slum loss of high performance concrete are also discussed . 〔

外掺占水泥量1.5%载体流化剂，更能有效地控制混凝土的坍落度损失，在90min内基本不变。

The concrete slump can be kept at 90 min by outside mixing 1.5 % carrier fluidizing agent .

在坍落度为180mm～260mm时，轻集料混凝土具有较好的免振自密实能力。

Lightweight aggregate concrete can be densified in itself when the slump is in the range of 180 ~ 260mm .

利用超微气流粉碎机制得了平均粒径为1～5μm的微米级粉煤灰，将其作为掺合料配制出具有较高流动性（坍落度20cm左右）的超高强混凝土；

Using fluid energy mill , fly ash was ground to micrometre grade with average diametre 1 5 μ m. Super high strength and better fluidity concrete is designed and fabricated .

通过极差分析和方差分析，明确了各因素对新拌混凝土坍落度、28d抗压强度和28d劈拉强度等力学性能的影响。

After the expand experiment , the optimum mix proportion are determined . Through variance analysis , the influence of every factor to slump of fresh concrete , compressive strength , splitting tensile strength is known .

通过测试胶凝材料水化热、混凝土的坍落度和氯离子扩散系数、抗裂等级等性能，对C40海工混凝土的配合比进行了优化设计。

The mixture ratio of C40 marine high performance concrete is optimized through test of the hydration heat of binding material , slump , chloride ion diffusion coefficient , anti-crack rand of concrete .

经过不断的调整水泥用量、外加剂掺量，试拌出初始坍落度在200mm时能满足技术合同规范和监理工程师要求的混凝土配合比。

By constantly adjusting the cement and admixture usage , the mix proportioning of concrete with initial slump of 200 mm was made , which can both satisfy the contract Technical Specification and requirements of the Supervision Engineer .

采用合适掺量的矿渣可以配制出坍落度为180mm，28d强度达50MPa以上，各种耐久性能指标均达到基准混凝土技术指标的再生集料混凝土。

The concrete with various ratio of slag could meet with the technique requirements of basic concrete , and the slump was 180 mm and the strength of 28 days was above 50 MPa .

试验说明在接有M17塑化剂的泵送混凝土中加入粉煤灰，可增加坍落度，降低泌水率，泵逆性能可得到改善。

The experiments show that the M 17 plasticizing agent mixed into the pumping concrete could increase the slump , reduce the bleeding ratio , and the pumping performance could be improved .

N-2000掺量为05%～10%，减水率为15%～28%，使混凝土拌合物坍落度保持2h基本不损失。

The dosages of N-2000 are 0 5 % ~ 1 0 % by mass of cement . The water reducing ratio of N-2000 is 15 % ~ 18 % , which let the fresh concrete have basically no slump loss within 2 hours .

以分层度、坍落度、扩展度为新拌混凝土工作性能的评价指标，研究了矿物掺合料、砂率、增粘剂和减水剂对高强轻集料混凝土（LWAC）工作性能的影响。

Influence of mineral admixtures , sand ratio , tackifier and water reducer on the workability of the high strength lightweight aggregate concrete ( LWAC ) are studied by taking advantage of segregation degree , slump and dispersion as evaluating indicators .

而当矿渣掺量不变时，矿渣细度由361m2/kg增加到657m2/kg，混凝土强度最大可提高19MPa，混凝土坍落度最高只提高0.5倍左右。

And the slag ratio being fixed , specific surface of the slag ranged in 361 m2 / kg ~ 657 m2 / kg , the concrete strength will increase 19 MPa at most , meanwhile , the collapsed slump will only increase about 0.5 times .

控制混凝土坍落度损失添加剂的研制及应用

Manufacture and application of admixture to control loss of concrete slump

复合使用高效减水剂控制大流动性混凝土坍落度损失

Control of Slump Loss for high fluidity Concrete by Compounding Superplasticizers

改进式坍落度筒法测定新拌混凝土流变性能

The method of modified slump cone measuring fluidity of fresh concrete

大流动性高强混凝土坍落度经时损失研究

Research on the Slump Time losing of Large Fluidity High-strength Concrete

基于坍落度测试的粗骨料充填料浆流动性检验

Liquidity Detection Based on the Slump Testing of Coarse Aggregate Filling Material

避免在放置之前重新混合混凝土来增加坍落度。

Avoid retempering concrete to increase slump prior to placement .

控制混凝土坍落度损失的载体流化剂

Carrier fluidizing agent for controlling the slump loss of concrete

BTC&1型混凝土坍落度测定仪验证试验研究

A study on testing and evaluation of the BTC-I concrete slump tester