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首页> 外文会议>International Conference on Civil Engineering, Architecture and Building Materials >Cement-free mortar using ground granulated blast-furnace slag with different alkali-activators
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Cement-free mortar using ground granulated blast-furnace slag with different alkali-activators

机译：使用地面颗粒状高炉炉渣的防水砂浆，具有不同的碱 - 活化剂

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The present study concerns a development of cement-free concrete using ground granulated blast-furnace slag(GGBS) with alkali-activators such as KOH, NaOH, and Ca(OH)_2. To find out the development among three different activators, the concentration of hydroxyl ion was kept 0.5%, 1.0%, 1.5%, 2.0% and 3.0% by weight of binder irrespective of cations. The setting time was measured by penetration resistance immediately after casting of mortar. The development of compressive strength was measured at 7, 14, 28, and 91 days. The pore structure of cement-free mortar was examined by the mercury intrusion porosimetry(MIP) and rapid chloride penetration test(RCPT). Simultaneously, grew sample was used to microscopically observe at the XRD. For strength of cement-free mortar, mixed with KOH or NaOH was as high as OPC at 3.0% by weight of binder. However, the compressive strength of cement-free concrete mixed with 3.0% Ca(OH)_2 by weight of binder had just half strength of OPC mortar. Cement-free concrete activated with NaOH and Ca(OH)_2 hadhigher total pore volume, however, it had lower ionic penetrability due to the pore type which mostly consist of gel pores. For pore structure of cement-free mortar mixed with KOH, the total volume had similarity to that of OPC mortar, however, it had lower penetrability. Therefore, it may have higher resistance to chloride transport than that of OPC mortar.
机译：本研究涉及使用地面粒状的高炉炉渣（GGB）的无水泥混凝土的发展，碱活化剂如KOH，NaOH和Ca（OH）_2。为了了解三种不同的活化剂之间的开发，无论阳离子如何，羟基离子的浓度保持0.5％，1.0％，1.5％，2.0％和3.0％重量的粘合剂。砂浆铸造后立即通过渗透阻抗测量设定时间。在7,14,28和91天测量抗压强度的发展。通过汞侵入孔隙瘤（MIP）和快速氯化物渗透试验（RCPT）检查防粘砂浆的孔结构。同时，使用成长样品在XRD中进行显微镜观察。对于无水泥砂浆的强度，与KOH或NaOH混合，高于粘合剂的3.0％重量的OPC。然而，与3.0％Ca（OH）×2重量的粘合剂混合的无水泥混凝土的抗压强度仅具有OPC砂浆的一半强度。通过NaOH和Ca（OH）激活的无水泥混凝土_2 Hadhigher的总孔体积，然而，由于大多数由凝胶孔组成的孔型，它具有较低的离子渗透性。对于与KOH混合的防粘砂浆的孔结构，总体积与OPC砂浆的相似性，但是它具有较低的渗透性。因此，它可能对氯化物传输的耐抗性高于OPC砂浆的抗性。

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