๋ณธ ์ฐ๊ตฌ์์๋ ๊ณ ์ ๋์ฑ์ SBR ๊ฐ์ง ์๋ฉํธ ๋ชจ๋ฅดํ๋ฅด์ ๊ธฐ์ด์ ์ฑ๋ฅ์ ๋ฐํ์ผ๋ก ์ฝํฌ๋ฆฌํธ์ ๋ณด์์ฉ ์ฌ๋ฃ์ ๋งค์ฐ ์ค์ํ ์๊ตฌ์ฑ๋ฅ์ธ ๋ถ์ฐฉ๊ฐ๋์ ๋ํ ํผ์ฐฉ์ฒด์ ํ๋ฉด์ ์กด์ฌํ๋ ํ๋ฉด์๋์ ์ํฅ์ ๊ฒํ ํ๋ ์ฐ๊ตฌ๊ฐ ์ํํ์๋ค. ๊ณ ์ ๋์ฑ SBR ๊ฐ์ง ์๋ฉํธ ๋ชจ๋ฅดํ๋ฅด์ ๊ธฐ์ด์ ์ธ ์ฑ๋ฅ์ ํ ๋๋ก ๋ถ์ฐฉ๊ฐ๋, ์๊ฐ๋ฆผ์ฑ, ์ฌ๋ฃ๋ถ๋ฆฌ ์ ํญ์ฑ์ด ์ข์ ์ํ์ฒด๋ฅผ ์ ํํ์๋ค. ์ํ์ฒด๋ C:F=1:1์ธ ๊ฒฝ์ฐ P/C=20%, 30%์ ์ํ์ฒด 2๊ฐ, C:F=1:3์ธ ๊ฒฝ์ฐ P/C=50%์ ์ํ์ฒด 1๊ฐ, ์ด 3๊ฐ๊ฐ ์ ํ๋์์ผ๋ฉฐ ์ด 3๊ฐ์ ๋ฐฐํฉ์ ๋ํ์ฌ ํผ์ฐฉ์ฒด์ ํ๋ฉด์๋์ ๋ฐ๋ฅธ ๊ณ ์ ๋์ฑ SBR ๊ฐ์ง ์๋ฉํธ ๋ชจ๋ฅดํ๋ฅด์ ํน์ฑ์ ํ์
ํ์๋ค. ํ๋ฉด์๋ ์ฝํฌ๋ฆฌํธ ํผ์ฐฉ๋ฉด์ ๋จ์ ๋ฉด์ (<TEX>$cm^2$</TEX>) ๋น ๊ฐ๊ฐ 0, 0.006, 0.012, 0.017, 0.024 g์ด ๊ท ๋ฑํ๊ฒ ์ดํฌ๋์์ผ๋ฉฐ, ์ด์ ๋ฐ๋ฅธ ์ฐ๋๋ณํ, ํ๋ก์ฐ๊ฐ, ๋ถ์ฐฉ๊ฐ๋, ๋ถ์ฐฉํ๊ดดํ์, ๋ด๊ท ์ด์ฑ ๋ฐ ์ฌ๋ฃ๋ถ๋ฆฌ์ฌ๋ถ๋ฅผ ํ์
ํ์๋ค. ๋ณธ ์ฐ๊ตฌ๋ฅผ ํตํด ์ฝํฌ๋ฆฌํธ ํผ์ฐฉ์ฒด์ ์ดํฌ๋ ํ๋ฉด์๋ ๊ณ ์ ๋์ฑ SBR ๊ฐ์ง ์๋ฉํธ ๋ชจ๋ฅดํ๋ฅด์ ๋ถ์ฐฉ๊ฐ๋๋ฅผ ์ฆ์งํ๋ ํจ๊ณผ๊ฐ ์๋ค๋ ๊ฒฐ๋ก ์ ์ป์๋ค. This study investigated the effect of surface water on concrete substrate on adhesive strength in tension of very high flowable SBR-modified cement mortar. The specimens were prepared with proportionally mixing SBR latex, ordinary portland cement, silica sand, superplasticizer and viscosity enhancing agent. Polymer cement ratio (P/C) were 10, 20, 30, 50 and 75% and the weight ratio of fine aggregate to cement were 1:1 and 1:3. The specimens obtained with different P/C and C:F were characterized by unit weight, flow test, crack resistance and adhesion test. After basic tests, two mixtures of P/C=20% and 30% in case of C:F=1:1, and one mixture of P/C=50% in case of C:F=1:3 were selected, respectively. These three selected specimens were studied about the effect of surface water evenly sprayed on concrete substrate by a amount of 0, 0.006, 0.012, 0.017, 0.024g per unit area (<TEX>$cm^2$</TEX>) of concrete substrate surface The results show that surface water on concrete substrate increases the adhesive strength in tension of high flowable SBR-modified cement mortar and improve the flowability compared to the non-sprayed case.