水玻璃

The development of technologies and materials on new easy collapsibility modified sodium silicate sand were studied.

介绍了水玻璃砂工艺研究取得的最新进展，研制的新型改性水玻璃是一种无机和有机相复合的铸造粘结剂，具有常温强度高、残留强度低、抗吸湿性好等优点。

The property characteristics of new generation of ester-hardened sodium silicate sand was introduced, and the factors influencing the atmospheric temperature strength and collapsibility of.

笔者介绍了新型酯硬化水玻璃砂的性能特点，就酯硬化改性水玻璃砂常温强度和溃散性的影响因素与改进方法进行了试验研究和探讨。

The results showed that the condign technical conditions for preparing the composite were 30℃ for the reaction temperature, 0.8/1 for the molar ratio of ethyl acetate and SiO2, and 6.5% for the concentration of water glass.

结果表明，制备SiO2/NR复合材料较适宜的复合工艺为院水玻璃与乙酸乙酯反应温度30益，乙酸乙酯和水玻璃溶液中所含SiO2的摩尔比n为0.8∶1，水玻璃浓度为6.5%。

In recent years, some new water glass sand processes have been developed according to the rule of water glass theory. We have developed the coating transferring precision casting process to be used in mold making. A new reinforce 2000 multiplex denature water glass has been invented. The specific binding strength is improved 1～1. 5 times and the addition amount of new water glass can be reduced to 2. 8～3. 0% for CO〓 sand process.

近年来，在水玻璃砂基础理论的指导下，相继开发出了一系列新型水玻璃砂工艺，例如将涂层转移法精密铸造技术应用于模具的制造，开发了强力2000型多重变性水玻璃粘结剂等，使水玻璃的比粘结强度提高了1～1.5倍，CO〓硬化的水玻璃加入量降低到2.8～3.0％，在生产实践中得到了应用。

Based on the short gel-time features of ordinary cement sodium-silicate and alkali-activated salic cementitious materials, an ideal structure model of high performance sodium-silicate suspension two-shot grouting material was established. An experiment was undertaken to verify the solidification value of Na~+ and water-erosion resistance of a grouting material combined with cement and metakaolin-sodium silicate. This paper put forward a compact structure with a dominant ingredient of-Si-Al-H zeolite gel formed on later age and a minor part of C-S-H formed on early age, which composed of sodium-silicate, substances that could release Ca~(2+) spontaneously and stably or by the aid of sodium-silicate, and active salic substances.

结合普通水泥-水玻璃快速胶凝和碱激发硅铝质胶凝材料的特点，本文建立了高性能水玻璃悬浊型双液灌浆材料的理想结构模型，并通过水泥复合偏高岭土-水玻璃灌浆材料的Na~+固化性能和抗水溶蚀性能进行了试验验证，提出其组成结构应是以-Si-Al-H类沸石凝胶物质为主、C-S-H为辅的复合共存密实结构，其组成要素为水玻璃、能自发稳定地或在水玻璃作用下迅速释放出Ca~(2+)的物质、活性硅铝质材料。

Erials, such as instable geltime, low stability, poor underwatererosion resistance and so on, and based on the short geltime features of ordinary cement sodium silicate and alkaliactivated salic cementitious materials, an ideal structure model of high performance sodium silicate suspension twoshot groutingmaterial is established. An experiment is undertaken to verify the solidification value of Na+ and watererosion resistance of a grouting material combined with cement and metakaolinsodium silicate. This paper puts forward a compact structure with a dominant ingredient of—Si—Al—H zeolite gel and a minor part of C—S—H by means of IR and SEM microanalysis method.

摘要］ 针对隧道注浆工程用普通水泥水玻璃双液注浆材料存在凝胶时间不稳定、产物稳定性和抗地下水侵蚀性能差等主要问题，结合普通水泥水玻璃快速胶凝和碱激发硅铝质胶凝材料的特点，建立了高性能水玻璃悬浊型双液注浆材料的理想结构模型，并通过水泥复合偏高岭土水玻璃注浆材料的Na+固化性能和抗水溶蚀性能进行了试验验证，结合IR和SEM微观测试分析手段提出其组成结构应是以—Si—Al—H类沸石凝胶物质为主、C—S—H为辅的复合共存密实结构。

The principle of chemical reclamation of sodium silicate sand through cognition of harden mechanism is presented.

介绍了水玻璃旧砂湿法、干法和热法再生原理，并简要说明了其应用情况；阐述了水玻璃旧砂化学再生的基本原理，并对水玻璃旧砂化学再生方面的研究及应用情况进行了论述。

Through measuring the gel time and the unconfined compression stre- ngth of cement-waterglass-clay specimen, this paper, using orthogonal method, analyzes the effect of different water-cement ratio, different admixing quantities of waterglass and different clay content on specimen strength and presents the optimal dispensation formula for two-fluid process of cement-waterglass.

本文通过水泥—水玻璃—粘土试件凝胶时间的测定及无侧限抗压强度测定，用正交方法分析了不同水灰比、不同水玻璃掺量及不同粘土含量对试件强度的影响，提出了水泥—水玻璃双液浆的最优配方，基本解决了旋喷施工时造成的基础瞬时沉降问题，为旅喷注浆的设计与施工提供了依据。

ABSTRACT In our country, more than 70% steel castings and large iron castings are produced by water glass mould and core sand process.

我国70％以上铸钢和大型铸铁件是应用水玻璃砂工艺生产的，年消耗水玻璃30余万吨，水玻璃砂600余万吨。

ABSTRACT In our country, more than 70% steel castings and large iron castings are produced by water glass mould and core sand process. The annual consumption of water glass and its sand is more than 300, 000 and 6, 000, 000 tons respectively.

我国70％以上铸钢和大型铸铁件是应用水玻璃砂工艺生产的，年消耗水玻璃30余万吨，水玻璃砂600余万吨。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失