Compared with the existing method, the method for preparing the sodium lignin sulfonate water reducer has no pollution to the environment, the processes are simple and convenient, and the cost is low.
与现有方法相比，本发明的制备木质素磺酸钠减水剂的方法对环境没有污染，工序简便，成本低廉。
Performance of sulfonated alkali lignin used as water reducer for concrete was experimented.
实验研究了磺化碱木素用作混凝土减水剂的性能。
The influences of flyash, water reducer and W/C on the strength and brittleness of flyash paving concrete were investigated.
本文研究了粉煤灰、减水剂掺量与水灰比对粉煤灰道路混凝土抗压强度、脆性系数的影响。
The result shows this water reducer agent features in small dosage, high water reducing rate, and good performance of concrete.
结果表明：该产品具有掺量低、减水率高、混凝土性能优良等特点。
On the basis of production practice, the reaction mechanism of highly efficient aliphatic water reducer was analyzed in-depth, its molecular formula was put forward.
在生产实践的基础上对脂肪族高效减水剂的合成反应机理进行了深入的分析，提出了脂肪族减水剂的分子示意式。
Under the conditions of higher water-cement radio, a certain consistency FDN high-range water reducer and hermetic surrounding, the cement paste did not set in a long time.
在较大水灰比，一定浓度FDN高效减水剂及密闭条件下，上层水泥浆体会长时间不凝结。
Under the conditions of higher water-cement ratio, a certain consistency FDN high-range water reducer and hermetic surrounding, the cement paste did not set in a long time.
在较大水灰比，一定浓度FDN高效减水剂及密闭条件下，上层水泥浆体会长时间不凝结。
By the means of adding mineral admixture and high-range water reducer, this article used the manufactured sand as the fine aggregate to produce the high strength flowing manufactured sand concrete.
本文论述了通过掺加矿物掺合料、高效减水剂的技术途径，利用机制砂作为混凝土的细集料，在实验室配制出了大流动性的高强机制砂混凝土。
Under the condition of invariable fiber dosage, the flexural strength of concrete moves upward with the increase of water reducer dosage and fiber beating degrees, and then approaches to saturation.
在纤维用量不变的情况下，随减水剂用量及纤维叩解度的增加，混凝土抗折强度提高，然后趋于饱和。
Additives, including water reducer, stabilizer, coagulant, early strength agent, waterproofing agent can be made under the bubble of concrete conditions of use and construction to add (or not added).
添加剂包括减水剂，稳定剂，促凝剂，早强剂，防水剂等，可根据泡沫混凝土的用途和施工条件进行添加(也可不加)。
The experiments have shown that the technology of oxidation degradation with nitric acid and sulfoxidation with sodium sulphite to produce water-reducer of cement with decomposed coal is available.
大量实验证明以风化煤为原料采用硝酸氧化降解后再磺化的方法生产混凝土减水剂的工艺是合理的。
The technical properties and application of water-reducer of cement are introduced.
文章中介绍了混凝土减水剂的各项技术指标及其应用价值。
The synthesis PC series water-reducer has the better compatibility to many kinds of cement and higher performance-price ratio.
合成的PC系列减水剂对多种水泥具有适应性且性价比高。
The synthesis PC series water-reducer has the better compatibility to many kinds of cement and higher performance-price ratio.
合成的PC系列减水剂对多种水泥具有适应性且性价比高。
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