硅灰类型对碱集料反应的影响及机理分析_《混凝土与水泥制品》杂志社

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



硅灰类型对碱集料反应的影响及机理分析

Effect of Silica Fume Type on Alkali-aggregate Reaction and Its Mechanism Analysis

2023年第3期

碱集料反应（AAR）；碱硅酸反应（ASR）；火山灰反应；ASR凝胶；膨胀；原状硅灰；增密硅灰

Alkali-aggregate reaction; Alkali-silica reaction(ASR); Pozzolanic reaction; ASR gel; Expansion; Undensified silica fume; Densified silica fume

2023年第3期

10.19761/j.1000-4637.2023.03.087.05

赵明，汪冬冬，张悦然

中交上海港湾工程设计研究院有限公司，上海 200032

赵明，汪冬冬，张悦然

赵明,汪冬冬,张悦然.硅灰类型对碱集料反应的影响及机理分析[J].混凝土与水泥制品,2023(3):87-91.

ZHAO M,WANG D D,ZHANG Y R.Effect of Silica Fume Type on Alkali-aggregate Reaction and Its Mechanism Analysis[J].China Concrete and Cement Products,2023(3):87-91.

浏览量:

1000

摘要：采用快速砂浆棒法研究了原状硅灰和增密硅灰对活性骨料碱集料反应（AAR）的影响，采用岩相法分析了增密硅灰发生反应后的形貌及膨胀开裂现象。结果表明：原状硅灰可以明显地抑制活性骨料发生AAR，增密硅灰则会加剧碱硅酸反应（ASR）；原状硅灰颗粒微小，在砂浆中分散均匀，主要发生火山灰反应，消耗砂浆孔溶液中的碱，降低孔溶液的pH值，且形成的低钙硅比C-S-H凝胶还能进一步捕捉体系中的碱，从而抑制发生AAR；增密硅灰中的部分颗粒难以在砂浆搅拌过程中充分破碎和分散，会与碱发生ASR而非火山灰反应，形成的ASR凝胶吸水膨胀，加剧了活性骨料的AAR和膨胀。 Abstract: The effect of undensified silica fume and densified silica fume on the alkali-aggregate reaction(AAR) of reactive aggregates was studied by using the accelerated mortar bar method. The morphology and expansion cracking of densified silica fume after reaction were analyzed by using the petrographic method. The results show that the undensified silica fume can obviously inhibit the AAR of the reactive aggregates, but the densified silica fume aggravates the alkali-silica reaction(ASR). The undensified silica fume particles are small and evenly dispersed in the mortar, mainly producing pozzolanic reaction, consuming the alkali in the mortar pore solution, reducing the pH value of the pore solution, and the formed low calcium silica ratio C-S-H gel can further capture the alkali in the system, thus inhibiting the AAR. Some particles in densified silica fume are difficult to be fully broken and dispersed during mortar mixing, and will react with alkali in ASR rather than pozzolanic reaction, and the formed ASR gel absorbs water and expands, which intensifies the AAR and the expansion of reactive aggregates.

英文名 : Effect of Silica Fume Type on Alkali-aggregate Reaction and Its Mechanism Analysis

刊期 : 2023年第3期

关键词 : 碱集料反应（AAR）；碱硅酸反应（ASR）；火山灰反应；ASR凝胶；膨胀；原状硅灰；增密硅灰

Key words : Alkali-aggregate reaction; Alkali-silica reaction(ASR); Pozzolanic reaction; ASR gel; Expansion; Undensified silica fume; Densified silica fume

刊期 : 2023年第3期

DOI : 10.19761/j.1000-4637.2023.03.087.05

文章编号 :

基金项目 :

作者 : 赵明，汪冬冬，张悦然

单位 : 中交上海港湾工程设计研究院有限公司，上海 200032

赵明，汪冬冬，张悦然

赵明,汪冬冬,张悦然.硅灰类型对碱集料反应的影响及机理分析[J].混凝土与水泥制品,2023(3):87-91.

ZHAO M,WANG D D,ZHANG Y R.Effect of Silica Fume Type on Alkali-aggregate Reaction and Its Mechanism Analysis[J].China Concrete and Cement Products,2023(3):87-91.





摘要

参数

结论

参考文献

引用本文

Abstract: The effect of undensified silica fume and densified silica fume on the alkali-aggregate reaction(AAR) of reactive aggregates was studied by using the accelerated mortar bar method. The morphology and expansion cracking of densified silica fume after reaction were analyzed by using the petrographic method. The results show that the undensified silica fume can obviously inhibit the AAR of the reactive aggregates, but the densified silica fume aggravates the alkali-silica reaction(ASR). The undensified silica fume particles are small and evenly dispersed in the mortar, mainly producing pozzolanic reaction, consuming the alkali in the mortar pore solution, reducing the pH value of the pore solution, and the formed low calcium silica ratio C-S-H gel can further capture the alkali in the system, thus inhibiting the AAR. Some particles in densified silica fume are difficult to be fully broken and dispersed during mortar mixing, and will react with alkali in ASR rather than pozzolanic reaction, and the formed ASR gel absorbs water and expands, which intensifies the AAR and the expansion of reactive aggregates.

扫二维码用手机看

[1] FOURNIER B,B?魪RUB?魪 M A.Alkali-aggregate Reaction in Concrete: A Review of Basic Concepts and Engineering Implications[J].Canadian Journal of Civil Engineering,2000,27(2):167-191.
[2] 李珍,金宇,马保国.玄武岩骨料碱活性试验研究[J].长江科学院院报,2007,24(2):43-45.
[3] 温海锋,张海波.碱骨料反应及辅助胶凝材料对其抑制机理的研究综述[J].硅酸盐通报,2019,38(6):1782-1787.

[4] 潘坚文,蔡小莹,张楚汉.混凝土碱骨料反应力学性质劣化机理研究[J].水利学报,2014,45(S1):38-42.
[5] MAAS A J,IDEKER J H,JUENGER M C G.Alkali Silica Reactivity of Agglomerated Silica Fume [J].Cement and Concrete Research,2007,37:166-174.
[6] 王威,刘连新,王勇生,等.硅粉抑制碱集料反应的试验研究[J].硅酸盐通报,2017,36(8):1001-1625.
[7] 唐明述.世界各国碱集料反应概况[J].水泥工程,1999(4):1-6.
[8] 莫祥银,许仲梓,唐明述.国内外混凝土碱集料反应研究综述[J].材料科学与工程学报,2002,20(1):128-132.
[9] 赵筠,娄丽华,阮宏艳.北京砼桥梁碱-集料反应破坏的调查分析[J].混凝土与水泥制品,1993(6):22-24.
[10] 卢都友,许仲梓,吕忆农,等.碱硅酸反应（ASR）抑制措施研究评述[J].混凝土与水泥制品,1999(2):14-18.
[11] FIGUEIRA R B,SOUSA R,COELHO L,et al.Alkali-silica Reaction in Concrete: Mechanisms, Mitigation and Test Methods[J].Construction and Building Materials,2019,222:903-931.
[12] MOHAMMADI A,GHIASVAND E,NILI M.Relation Between Mechanical Properties of Concrete and Alkali-silica Reaction (ASR): A Review[J].Construction and Building Materials,2020,258:1-16.
[13] THOMAS M.The Effect of Supplementary Cementing Materials on Alkali-silica Reaction: A Review[J].Cement and Concrete Research,2011,41:1224-1231.
[14] 岳龙,季涛,周钰鑫,等.废玻璃粉活性激发及对砂浆性能的影响[J].混凝土与水泥制品,2022(7):97-100.
[15] 高鹏飞.不同温度下粒径对玻璃粉抑制碱硅酸反应的影响[J].硅酸盐通报,2020,39(1):101-105.
[16] American Society of Testing Materials.Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method):ASTM C1260-21[S].West Conshohocken:ASTM International,2021.
[17] B?魪RUB?魪 M A,DUCHESNE J,CHOUINARD D.Why the Accelerated Mortar Bar Method ASTM C1260 is Reliable for Evaluating the Effectiveness of Supplementary Cementing Materials in Suppressing Expansion Due to Alkali-silica Reactivity[J].Cement,Concrete and Aggregates,1995,17(1):26-34.
[18] HONG S Y,GLASSER F P.Alkali Binding in Cement Pastes: Past Ⅰ. The C-S-H Phase[J].Cement and Concrete Research,1999,29(12):1893-1903.
[19] SUWITO A,JIN W,XI Y,et al.A Mathematical Model for the Pessimum Effect of ASR in Concrete[J].Concrete Science and Engineering,2002,4(13):23-34.
[20] PETTERSSON K.Effects of Silica Fume on Alkali-silica Expansion in Mortar Specimens[J].Cement and Concrete Research,1992,22(1):15-22.
[21] MARUSIN S L,SHOTWELL L B.Alkali Silica Reaction in Concrete Caused by Densified Silica Fume Lumps: A Case Study[J].Cement,Concrete and Aggregates,2000,22(2):90-94.
[22] RANGARAJU P R,OLEK J.Evaluation of the Potential of Densified Silica Fume to Cause Alkali-silica Reaction in Cementitious Matrices Using a Modified ASTM C 1260 Test Procedure[J].Cement,Concrete and Aggregates,2000,22(2):150-159.
[23] DIAMOND S,SAHUB S,THAULOW N.Reaction Products of Densified Silica Fume Agglomerates in Concrete[J].Cement and Concrete Research,2004,34(9):1625-1632.
[24] MULTON S,CYR M,ELLIER A,et al.Effects of Aggregate Size and Alkali Content on ASR Expansion[J].Cement and Concrete Research,2010,40(4):508-516.

上一个

钢渣混凝土的抗碳化性能及寿命预测

下一个

铁尾矿粉和磷渣粉对再生混凝土抗氯离子渗透性能的影响

头部文案

硅灰类型对碱集料反应的影响及机理分析

相关文件