RESISTANCE OF BASALT FIBRE IN THE ALKALINE ENVIRONMENT OF HYDRATING CEMENT SYSTEMS
Article Sidebar
Main Article Content
Abstract
The paper presents studies aimed at substantiating the possibility of using basalt fiber as dispersed reinforcement in cement systems based on expanding binders with high energy of expansion (stressing cements). Alkalinity resistance of basalt fiber by the accelerated method by a four-hour exposure in a saturated solution of Ca(OH)2 at temperature t=95°С, which allows simulating the operation process within 10 years in the environment of the cement stone, has been investigated. Tensile strength of cement samples with basalt fiber treated by the accelerated method has been proposed as one of the criteria for estimating the quality of alkali-resistant fiber. The application of NC on a Portland cement base and expanding additive consisting of a mixture of highly reactive metakaolin and natural gypsum allowing a decrease in pH of the medium from values ≈12.13 to ≈11.25 is an alternative way of reducing the alkalinity of hydrating medium as the most favorable for basalt fiber location. A number of experimental studies have been conducted to determine the strength properties and self-strains of basalt fiber-reinforced selfs-tressing cement. Experimental and theoretical studies have revealed that basalt fiber has high alkali resistance. The introduction of basalt fiber in an amount of 5% of the binder mass makes it possible to increase compressive strength of the SSC by 35%, tensile strength at bending by 68%, with self-strain corresponding to 0.22% of free expansion and 2.74 MPa of self-stressing, respectively.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Tur, V.V. (1998). Eksperimental'no-teoreticheskie osnovy predvaritel'nogo napryazheniya konstruktsii pri primenenii napryagayushchego betona. Brest: BPI. (In Russ.).
Pavlova, I.P. & Belomesova, K.Yu. (2021). Vliyanie vida dispersnogo armirovaniya na prochnostnye kharakteristiki rasshiryayushchikhsya tsementnykh vyazhushchikh s vysokoi energiei rasshireniya [Influence of disperse reinforcement on the strength properties of expansive cement binders with high expansion energy]. In D.N. Lazovskii (Eds.) [et al.] Arkhitekturno-stroitel'nyi kompleks: problemy, perspektivy, innovatsii: elektron. sb. st. (111–118). Novopolotsk: Polots. gos. un-t. (In Russ., abstr. in Engl.).
Voylokov, I.A. & Kanayev, S.F. (2009). Basalt fiber concrete. Historical excursion. Engineering and construction journal, (4), 26–31.
Rabinovich, F.N., Zueva, V.N. & Makeeva, L.V. (2001). Ustoichivost' bazal'tovykh volokon v srede gidratiruyushchikhsya tsementov. Steklo i keramika [Glass and Ceramics], 74 (12), 29–32. (In Russ.).
Pashchenko, A.A., Serbin, V.P., Paslavskaya, A.P., Glukhovskii, V.V., Biryukovich, Yu.L., Solodovnik, A.B., ... Bem, Yu.O. (1988). Armirovanie neorganicheskikh vyazhushchikh veshchestv mineral'nymi voloknami. Moscow: Stroiizdat. (In Russ.).
Buchkin, A.V. & Stepanova, V.F. (2006). Tsementnye kompozitsii povyshennoi korrozionnoi stoikosti, armirovannye bazal'tovymi voloknami. Stroitel'nye materialy [Construction Materials], (7), 82–83. (In Russ.).
Babaev, V.B., Strokova, V.V., Nelyubova, V.V. & Savgir, N.L. (2013). K voprosu o shchelochestoikosti bazal'tovoi fibry v tsementnoi sisteme. Vestn. Belgorodskogo gos. tekhnol. un-ta im. V.G. Shukhova [Belgorod State Technological University named after V.G. Shukhov], (2), 63–66. (In Russ.).
Levchuk, N.V. & Shlyakhova, E.I. (2017). Fiziko-khimicheskie i tekhnologicheskie aspekty primeneniya bazal'tovoi fibry [Physical and Chemical Technological Aspects of Fibre Application]. Vestn. Brestskogo gos. tekhn. un-ta [Vestnik of Brest State Technical University], (1), 135–138. (In Russ., abstr. in Engl.).
Most read articles by the same author(s)
- K. BELAMESAVA, I. PAULAVA, ANALYTICAL MODEL FOR CALCULATING THE AMOUNT OF BASALT FIBER TO PRODUCE DISPER-SION-REINFORCED CONCRETE WITH AN OPTIMAL STRUCTURE, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 1 (2023)
- I. PAULAVA, SUPERPLASTISIZERS INFLUENCE ON EXPANSIVE CEMENTITIOUS SYSTEMS PROPERTIES, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 16 (2016)
- K. BELAMESAVA, HIGHLY EFFICIENT BASALT FIBER-REINFORCED COMPOSITE SYSTEMS, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 16 (2018)
- I. PAULAVA, K. BELAMESAVA, EXPERIMENTAL AND THEORETICAL MIX AND PROPERTIES RESEARCH OF EXPANSIVE FIBERSHOTCRETE, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 16 (2017)
- I. PAULAVA, EXPANSIVE CONCRETE COMPOSITE MODEL FOR PREDICTION SELF-STRESS MAGNITUDE IN EXPANSIVE FIBERCONCRETE, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 16 (2018)
- I. PAULAVA, RESEARCH AND ASSESMENT CONCRETE PROPERTIES WITH DETECTION POSSIBLE REASON OF STRUCTURE POP-OUTS, Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences: No. 16 (2018)